Academia.eduAcademia.edu
CATRINA (2008), 3 (1): 11 26 © 2008 BY THE EGYPTIAN SOCIETY FOR ENVIRONMENTAL SCIENCES PROCEEDINGS OF THE SECOND INTERNATIONAL CONFERENCE ON THE ROLE OF GENETICS AND BIOTECHNOLOGY IN CONSERVATION OF NATURAL RESOURCES, ISMAILIA, EGYPT, JULY 9 10, 2007 Current Status of the Flora of North Sinai: Losses and Gains Wafaa M. Kamel, Mohamed S. Zaghloul*, Raafat H. Abd El$Wahab, and Abdel$Raouf A. Moustafa Botany Department, Faculty of Sciences, Suez Canal University, 41522 Ismailia, Egypt ABSTRACT Recent changes in floristic composition and structure in North Sinai due to human impact and contemporary prevailing drought were studied. Three hundred plots distributed in one hundred sites were sampled throughout the North Sinai covering different seasons of 2005 and 2006. Two hundred and eighty one species were recorded belonging to 187 genera and 52 families. The collected species included a new record to Egypt (Cyperus glaber) L., a new record to Sinai (Persicaria sengalensis (Meisn.) Soják), and a new record to North Sinai (Eminium spiculatum (Blume) Schott subsp. negevensis Koach & Feinbrun). The distribution of the recorded species was estimated quantitatively based on the frequency of presence. The comparisons of the floristic composition and structure in present study with earlier studies (1960s and 1970s) revealed that the flora of North Sinai has been changed dramatically in the past 40 50 years. Four hundred and fifty one (62.3%) of previously recorded species were not recorded in the present survey. Our study concluded that unless refugee sites would be established representing different habitats in North Sinai, the documented change in floristic composition and structure would be continue leading to more loss in flora of North Sinai. Key words: Floristic composition and structure; North Sinai, temporal variation, human impact. INTRODUCTION Flora of Sinai deserts is subjected to a number of threats, which cause populations of its unique elements to decline in both number and size. Some of these threats are specific to certain taxa's populations, but the majority affects the functional communities and ecosystems in which these populations ultimately exist and interact with other species and the abiotic environment (e.g. Zaghloul, 1997; Moustafa et al., 2001; Zaghloul, 2003; and Abd El Wahab et al., 2004). These threats are either natural or human induced. The natural threats include drought, floods, and natural enemies (e.g. rodents, insects, and rotting fungi). Drought and flood years’ cycle has been observed in the area (Zaghloul, 2003; and Abd El Wahab, 2003). While drought and rarity of precipitation may be the prevailing climatic pattern for seven to ten successive years, it may be followed by rainy year/years with torrential rainfall causing destructive flash floods destroying the vegetation in Wadis (dry valleys) and runnels. While the drought itself has effects on sparse vegetation in arid to extremely arid ecosystems, it also aggravates any other threat especially human induced ones (Abd El Wahab et al., 2004). Since 1981, many attempts of modern urbanization have been made in North Sinai including projects for land reclamation and settlement of Bedouins in places of available fresh water resources, opening of schools, roads construction, and availing public traffic (North Sinai Governorate, 2004). These activities resulted in a close contact between the area and the rest of Egypt and made many sites and localities in remote deserts more easily accessible. This urbanization movement has mixed values; among the bad ones are the stressing and the destruction of unique natural ecosystems supporting unique and critical floristic elements of the area. Disturbances due to human impact have been recorded in the area include over grazing, over collecting, uprooting, over cutting ____________________________________________ * Corresponding author: zaghloul_mohamed@yahoo.com for fuel wood, urbanization (construction of new settlements and infrastructure, e.g. El Salam irrigation canal), quarrying, solid wasting, and removing natural vegetation for cultivation projects. These disturbances lead to the destruction of natural habitats and the disappearance of previously recorded plant communities in which unique floristic elements live and interact, which in turn lead to loosing diversity and to change in floristic composition and structure of the area (Medicinal Plants Conservation Project, 2006). Disappearance of plant species due to prevailing contemporary (the past 40 50 years) drought and the aforementioned unmanaged anthropogenic practices has been observed but not been documented. For this reason, the present study was undertaken to evaluate the current status of North Sinai flora and to document the recent changes in its composition (species richness) and structure (distribution of richness among the taxonomic families and/or genera). MATERIALS AND METHODS Study area The North Sinai lies at the north eastern corner of Egypt between 32o 20' 34o 30' E and 30o 05' 31o 10' N (Fig. 1). It is located along the Mediterranean Sea starting from Balloza village at the west to Rafah at the east. The eastern border is the eastern international political borders of Gaza strip and Israel starting with Rafah at the north to Taba at the south. The western border extends from Balloza village at the north to Ras Masala at the south. Its area is 27564 km2 (≈ 2.8% of total Egyptian land; North Sinai Governorate, 2004). The geographic elements of North Sinai are distinguished into two main districts. The first is the coastal district which includes coastal plain that extends 20 to 40 kilometers southward from the Mediterranean coast and are covered by different types of sand dunes. Current status of the flora of North Sinai 33o 32o 34o Rafah Port Said El Sheikh Zwaied Sabkhet El Bardawil Gilbana 31o Roman Bir El Abd El Arish El Mazar Bir Lehfan G. Libni ▲ El Qantara 463 m. G. Halal ▲ G. Maghara Ismailia 892 m. ▲ 738 m. G. Yi'allaq ▲ 1049 m 30o Suez El Kuntilla Nakhl El Naqab Taba Figure (1): Map of North Sinai showing the study area. The second is the desert district (Isthmic or Tih desert) which dominates the central part of North Sinai and includes plateaus and prominent but isolated mountain peaks. It forms a distinct geomorphological and structural unit characterized by a large number of northeast trending elliptical anticlines and intervening synclinal depressions. These anticlines and synclines are breached by erosion and fractured along lines that run more or less parallel to the axes of the anticlines. It is in radical contrast to the plateau character of central Sinai which is made of horizontal Cretaceous and Eocene strata (Said, 1990). This synclinal structure is obscured by a series of superimposed structures manifested in a number of elongated hog baked massifs that stud the chalk plains of central Sinai. Of these Gebel El Maghara (738 m a.s.l.), Gebel El Halal (892 m a.s.l.), Gebel Yi'allaq (1049 m a.s.l.), and Gebel Libni (463 m a.s.l.) are the largest. As a part of the Saharo Arabian deserts (McGinnies et al., 1968; Danin, 1983), North Sinai is characterized by an arid (< 100 mm precipitation/year) to extremely arid climate with Mediterranean influences on the coastal area (Ayyad and Ghabbour, 1986). According to the available fragmentary climatic data from Bir El Abd, El Arish, Rafah, El Maghara, El Melaz, and Nekhel meteorological stations (between 1955 and 1998), temperature changes widely between below 0o C during winter nights to several degrees above 40o C during the summer daytime. The annual mean temperature is about 20o C and as a result, dew is common expectance in winter. The mean maximum value of temperature is recorded in August and the mean minimum value is recorded in January. The humidity is quite variable seasonally and spatially. It is generally higher in winter than in summer due to the hot dry winds blowing from the south. The Mediterranean coastal area is more humid (74%) than the internal deserts of North Sinai (eg. El Maghara area, the annual mean relative humidity is 47%) and Egypt in general. Rainfall on North Sinai varies considerably from one year to another. The annual mean rainfall at the coastal plain (El Arish) was 97 mm and decreased to 84 mm in 1990s, while it ranges between 40 and 50 mm at El Maghara area. It reaches its lowest value at Nekhel station (15.4 mm) and its highest value at Rafah (157.4 mm). Eco geomorphologically, North Sinai could be divided into three main areas; the Mediterranean coast, the anticline and the inland area (Danin, 1983; Gibali, 2000). The Mediterranean coastal area which is 12 Kamel et al. (1999, 2000, 2002 & 2005). All specimens cited are deposited in the Suez Canal University Herbarium. Each species was assigned a degree of occurrence following categories of Danin et al. (1985) and using the following subjective scale; Dom. = dominant in plant communities in different sites over considerable area (>14% presence); Dom. local = dominant in communities within a relatively restricted habitat (9<14% presence); Cp. = companion of plant communities but not a rare plant (6<9% presence); Occ. = occasional or rare plant (3<6% presence); Spor. = sporadic or very rare (<3% presence). The life form was assigned following Boulos (1995). characterized by sparse vegetation of shrubs and semi shrubs has open undulating sand plains dominated by Artemisia monosperma, sand dunes dominated by the perennial grass Stipagrostis scoparia, and sabkhas or salt marches which are located at depressions and near the foothills of sandy dunes (Danin, 1983; and Zahran and Willis, 1992). The anticlinal area has sandy plains surrounding the mountains dominated by Anabasis articulate and Panicum turgidum, wadis supporting Retama raetam, Acacia tortilis, Acacia pachyceras and Tamarix nilotica or Tamarix aphylla (e.g. W. Masaged), and anticlines with limestone, chalk, dolmite, and marl outcrops (Danin, 1983). Slopes and gorges of the anticlines are dominanted by Zygophyllum dumosum, Reseda arabica, Retama raetam, Lycium shawii, and Juniperus phoenica (Medicinal Plants Conservation Project, 2006). The inland area has coarse texture sandy plains near the west characterized by poor vegetation cover of few number of species dominated by Anabasis articulata and Artemisia monosperma; fine textured sandy plain with scattered mobile sandy dunes of different densities characterized by higher vegetation especially in channels and depression between the sandy dunes, and dominated by Stipagrostis scoparia; and gravelly plains that are covered by sand sheets shifted from the Mediterranean region and dominated by Retama raetam shrubs (Medicinal Plants Conservation Project, 2006). Evaluating changes in floristic composition and structure To compare the species richness values of the current and previous (Danin et al., 1985) surveys, the Sørenson's similarity equation (Greig Smith, 1983) was used. Sørenson's similarity = 2C/(A+B), where A and B are the richness values of each of the surveys in the comparison and C is the number of common taxa shared by the two surveys. Variations between the two surveys in species richness for each eco geomorphological area (Mediterranean coast, anticlines, and inland) were assessed by calculating Beta diversity using Wilson Shmida index (βT = {g(H) + L(H)}/2 α) due its ability to reflect the biotic change along environmental variations and its strength in fulfilling the criteria of additively and independence of alpha diversity (Wilson and Shmida, 1984; Magurran, 1988). This index adds the number of species gained {g(H)} to the number of species lost {L(H)} along a habitat gradient (H), standardized by the average sample richness α. To assess the relation between the two surveys in species richness, the RELATE function in PRIMER 5 computer software was used. The RELATE function tests the null hypothesis of no relation between multivariate patterns from two sets of samples (Clarke and Warwick, 2001). The recorded species in both the current survey and the previous survey of Danin et al. (1985) and their degree of occurrence were re tabulated according to family to assess the changes in floristic structure between the surveys. Then, the RELATE function in PRIMER 5 computer software were used to assess the significance of variation in floristic structure between the two surveys. To assure that the apparent difference in floristic structure between the surveys is not due to the contemporary un recorded families (20 family), these families were omitted from Danin et al. (1985) survey and the resulted virtual previous survey was incorporated in the randomized block experiment as a third survey. Friedman test, a nonparametric analysis of a randomized block experiment, was applied using MINITAB 14 statistical software to test the significance of the difference. The Friedman test hypotheses are: H0: all treatment (survey) effects are zero, which mean no significant difference between the surveys, versus H1: not all treatment (survey) effects are zero which means Surveying the literature for previous floristic status Documenting any change in floristic composition of an area needs refereeing to previous floristic surveys. A thoroughly survey of every available related floristic and/or ecological study published in the last five decades on North Sinai, Sinai or even Egypt had been checked. Species nomenclature was updated according to Boulos (1999, 2000, 2002 & 2005). Danin et al. (1985) was used as the main reference (previous status) in comparing the distribution of each taxon with the current status as it provides more detailed information on taxa's distribution. Sampling protocol During the different seasons of 2005 and 2006, 300 plots distributed in 100 sites were sampled throughout North Sinai; 180 plots (10 x 10 m) in 60 sites from Qantara to Rafah representing the Mediterranean coastal area; 90 plots in 30 sites representing the anticlines area (Gebel Halal, Gabel El Maghara, Gabel Libni, and Gabel Yi'allaq), and 30 plots in ten sites representing the inland area. The number of sites selected in each area depended largely upon the variation in the physiognomy, habitat feature, prevailing environmental factors, and nature of soil surface. In each plot, a species list was recorded as presence/absence. Identification and nomenclature of the collected specimens were carried out according to Täckholm (1974), Zohary (1966 & 1972), Feinbrun Dothan (1978 & 1986), and Boulos 13 Current status of the flora of North Sinai a significant difference between the surveys. Randomized block experiments are a generalization of paired experiments, and the Friedman test is a generalization of the paired sign test. The test statistics were corrected for ties (if there are ties within one or more blocks, the average rank is used). Table (1): A comparison of modern floristic studies (arranged chronologically) with the present survey. Reference Boulos, 1960 Batanouny, 1964 Danin, 1973 Täckholm, 1974 Danin et al., 1985 Danin, 1986 Gibali, 1988 Taeckholmia, 1989 Boulos and Gibali, 1993 Gibali, 2000 Gamal El Din, 1993 Gazar et al., 2000 El Bana et al., 2000 El Bana et al., 2002 Present survey RESULTS The previous status Due to differences in aims and scopes of the studies, the thoroughly survey of the previous and/or ecological studies on North Sinai revealed a fairly large discrepancy (Table 1). Some contributions dealt with documenting new records (e.g. Danin, 1973; Danin and Hedge, 1973), while others were limited to certain areas and/or taxa in North Sinai (e.g. Boulos, 1960; El Hadidi, 1969 & 1970; Danin, 1987; Gamal Eldin, 1993; and Gazar et al., 2000). Few studies were comprehensive; Täckholm (1974), Danin et al. (1985), and Gibali (1988) of which only one study, Danin et al. (1985), gave detailed estimations on distribution of the taxa within different eco geomorphological areas in North Sinai. The recorded number of species in these studies varied from 279 in Gibali (1988) to more than 690 in Täckholm (1974). Boulos (1960) collected 199 species from El Maghara area belonging to 153 genera and 44 families. Täckholm (1974) recorded 670 species from the Eastern Mediterranean coastal region (Mp) and Isthmic desert (Di) which by definition includes North Sinai and the region North of Wadi Tumilat in Eastern Desert. These 670 species belong to 74 family. If we include the species recorded in (M) region, which is by definition, the coastal strip from El Sallum to Rafah, the figure would rise to be 694. Danin et al. (1985) recorded 569 species in the North Sinai belonging to 72 family. In El Hadidi et al. (1989), 641 species were recorded from North Sinai (Mediterranean, M; and Isthmic Desert, Di) belonging to 69 family. Gamal El Din (1993) recorded 114 species of seed plants in G. Halal belonging to 33 family. Gazar et al. (2000) 154 species belonging to 32 family growin on Gebel El Halal. Annual species represented 44.16% of the collected species. Gibali (1988) recorded 279 speceis belonging to 56 families from North Sinai. Gibali (2000) made a botanical survey of the inland desert region of the North Sinai. He recorded 119 species; 76 of them were recorded too in the coastal region (Gibali, 1988). The rest 43 species are confined to the central Sinai (Table 1). Scope of the study G. Maghara El Arish Sinai Egypt Sinai Sinai North Sinai Sinai Sinai North Sinai G. Halal G. Halal Lake Bardawil Lake Bardawil North Sinai No. of species 199 17 64 670 569 19 279 641 160 119 114 154 118 136 281 No. of families 44 13 29 74 72 10 56 69 39 32 33 32 40 42 52 and 52 families (average = 5.4 spp./family). The most represented families are: Compositae (42 spp.), Gramineae (31 spp.), Leguminosae (28 spp.), Cruciferae (23 spp.), Chenopodiaceae (21 spp.), Caryophyllaceae (15 spp.), Zygophyllaceae (9 spp.), Labiatae and Euphorbiaceae (7 spp. each), and Liliaceae, Polygonaceae, and Resedaceae (6 spp. each). The other recorded families are represented by 1 5 species each. One hundred and thirty seven species in present survey are annuals (49%) and 144 are perennials (51%). 188 species (66%) were collected from Meditereanian coast, 131 (47%) from the anticlinal area (G. El Halal, G. El Maghara, G. Libni, and G. Yi'alleq), and only 58 (20%) from inland areas. Some species were collected from two or more eco geomorphological areas which make the percentages overlap. Anticlines and inland areas have the highest floristic composition similarity (S.C. = 36.84) followed by Mediterranean coast and anticlines (S.C. = 31.78%). Changes in floristic composition Based on the present and previous surveys (excluding Boulos, 1999, 2000, 2002, & 2005 where they didn't give detailed distribution to the North Sinai), we can deduce that the flora of North Sinai comprises more than 710 species. The estimated figure includes 569 species were recorded by Danin et al. (1985), 61 in present survey but not in Danin et al. (1985), 36 species were recorded in other studies but neither Danin et al. (1985) nor present survey, and 53 only in Täckholm (1974) in Mp or Di. An extra 100 species were recorded in Täckholm (1974) in isthmic desert, Mediterranean coast, or Mediterranean coast and isthmic desert. Of the North Sinai flora, 451 species (62.3%) were lost in present survey. Four species (Adonis cuparriana, Cuscuta brevistyla, Moltkea callosa, Sedum viguieri) were not recorded since 1957 (G. Maghara, Boulos, 1960) and even not mentioned in Egyptian flora (Täckholm, 1974, and Boulos, 1999, 2000, & 2005). Floristic composition in the present survey In the present study, 281 species were collected and identified from 300 plots representing 100 sites in North Sinai (Table 2). The identified species belong to 198 genera (average = 1.5 spp./genus and 3.63 genus/family) 14 Kamel et al. Table (2): Distribution and conservation status of 281 species recorded in NS; M = Mediterranean cost, Mg = G. Maghara, H = G. Halal, L = G. Libni, Y = G. Yi'allaq, In = Inland areas. Distribution according to Täckholm (1974); c. = common, cc. = very common, r. = rare, rr. = very rare, Distribution according to Danin et al. (1985); 1 = Mediterranean, 2 = Gravelly plains, 3 = Transition zone between 1 & 2, 4 = Anticlines, N.R. = not recorded, Dom.= dominant in plant communities in different sites over considerable area; Dom. local = dominant in communities within a relatively restricted habitat; Cp. = companion of plant communities but not a rare plant; Occ. = occasional or rare plant; Spor. = sporadic or very rare. Families and species are listed in alphabetical order Family Species Aizoaceae Aizoon hispanicum L. Alliaceae Amaranthaceae Amaryllidaceae Araceae Asclepiadaceae Asparagaceae Asphodelaceae Boraginaceae Capparaceae Caryophyllaceae Chenopodiaceae Growth Present Survey form Dist. Ann. M Mesembryanthemum crystallinum L. Ann. M Mesembryanthemum forsskaolii Hochst. ex. Boiss. Mesembryanthemum nodiflorum L. Allium curtum Boiss.& Gaill. subsp. curtum Allium desertorum Forssk. Aerva javanica (Burm. f.) Juss. ex Schult. Pancratium sickenbergeri Asch. & Schweinf. Eminium spiculatum (Blume) Schott Asclepias sinaica (Boiss.) Muschl. Calotropis procera (Aiton) W. T. Aiton Pergularia tomentosa L. Asparagus aphyllus L. Ann. Ann. Per. Per. Per. Per. Per. Per. Per. Per. Per. M M, Mg L M Mg M M Mg, H, Y M, In, Y Mg, H, L, Y M, Mg Asparagus stipularis Forssk. Per. Mg, H, L, Y Asphodelus viscidulus Boiss. Anchusa humilis (Desf.) I. M. Johnst. Heliotropium arbainense Fresen. Ann. Ann. Per. Mg, H, L, In Mg Y, In Heliotropium digynum (Forssk.) Asch. ex C.Chr. Per. M, In Heliotropium ramosissimum (Lehm.) Sieb. ex. A. DC. Per. Moltkiopsis ciliata (Forssk.) I. M. Johnst. Per. Capparis spinosa L. var. spinosa Per. Status Spor. Dom. loc. Spor. Cp. Spor. Spor. Spor. Cp. Spor. Occ. Cp. Cp. Cp. Dom. loc. Cp. Spor. Occ. Dom. loc. Occ. Cp. Spor. Dom. loc. Cp. Occ. Cp. Cp. Occ. Spor. Spor. Spor. Spor. Täck. Danin (1974) Dist. r. 2, 4 (1985) Status Dom. loc. Dom. loc. c. 1 c. c. r. r. c. r. c. r. cc. cc. rr. 1, 2 Spor. 4 Cp. N.R. in Sinai 4 Spor. N.R. in Sinai 1, 2, 4 Cp. N.R. in study area 2, 4 Cp. 3, 4 Occ. 2, 4 Cp. N.R. in Sinai c. 1, 2, 3, 4 Cp. c. c. c. 1, 3, 4 1 2, 4 Occ. Occ. Cp. Dom. loc. cc. 1, 3, 4 cc. c. cc. N.R. in Sinai 1, 3, 4 Dom. loc. 2, 4 Dom. loc. cc. 1, 2, 3, 4 cc. c. c. r. r. r. cc. c. cc. 1, 2, 3, 4 Dom. 2 Cp. 1, 2, 3, 4 Cp. 1, 2, 3, 4 Cp. 1 Occ. 1, 2, 4 Cp. 1, 3, 4 Cp. N.R. in Sinai 1 Cp. Cleome amblyocarpa Barratte & Murb. Ann. Gymnocarpos decandrus Forssk. Gypsophila capillaris (Forssk.) C. Chr. Herniaria hirsute L. Paronychia arabica (L.) DC. Paronychia argentea Lam. Paronychia sinaica Fresen. Polycarpaea repens (Forssk.) Asch. & Schweinf. Polycarpon prostratum (Forssk.) Asch. & Schweinf. Polycarpon succulentum (Delile) J. Gay Polycarpon tetraphyllum (L.) L. var. Alsinifolium (Biv.) Ball Silene succulenta Forssk. Silene villosa Forssk. Spergula fallax (Lowe) E.H.L. Krause Spergularia diandra (Guss.) Boiss. Spergularia marina (L.) Bessler Agathophora alopecuroides (Delile) Fenzl ex Bunge Per. Ann. Ann. Ann. Ann. Per. Per. Ann. Ann. Mg, H, Y M, L, In In M, Mg, H, L, Y, In Mg, H, L, Y Mg, H, Y M, L M, H, L M Mg M, In L M Ann. M Spor. c. 1 Cp. Per. Per. Ann. Ann. Ann. Per. 1 1, 3, 4 1, 2, 4 1, 2, 4 1, 2, 4 1, 2, 4 Cp. Cp. Cp. Cp. Cp. Dom. Per. cc. 1, 2, 3, 4 Dom. Anabasis setifera Moq. Arthrocnemum macrostachyum (Moric.) K. Koch Atriplex farinosa Forssk. Atriplex halimus L. Atriplex leucoclada Boiss. Atriplex rosea L. Bassia muricata (L.) Asch. Chenopodium album L. Chenopodium glaucum L. Chenopodium murale L. Per. Per. Per. Per. Per. Ann. Ann. Ann. Ann. Ann. Spor. Cp. Spor. Spor. Spor. Occ. Dom. loc. Occ. Cp. Spor. Occ. Spor. Occ. Cp. Cp. Occ. Cp. c. r. c. cc. cc. r. Anabasis articulata (Forssk.) Moq. c. c. r. c. r. rr. cc. c. rr. cc. 1, 3, 4 Dom. loc. 1 Dom. N.R. in study area 1, 2, 4 Dom. 2, 4 Dom. N.R. in Sinai 1, 2, 3, 4 Cp. 1 Cp. N.R. in Sinai 1, 4 Cp. Cornulaca monacantha Delile Per. Dom. c. 1, 3, 4 Dom. Halocnemum strobilaceum (Pall.) M. Bieb. Per. M M M M M Mg, H M, Mg, H, L, Y, In Mg, L, In M Mg M M, Mg M M, H, In M M M M, Mg, H, L, Y, In M c. 1 Dom. Haloxylon salicornicum (Moq.) Bunge ex Boiss. Per. Mg, Y, In Haloxylon scoparium Pomel Noaea mucronata (Forssk.) Asch. & Schweinf. Per. Per. M, H, Y Mg, L Occ. Dom. loc. Cp. Spor. 15 Cp. cc. 1, 2, 3, 4 Dom. r. c. 1, 2, 3, 4 1, 2, 3, 4 Dom. Dom. Current status of the flora of North Sinai Table (2): continued Cistaceae Compositae Convolvulaceae Cruciferae Salsola kali L. Salsola longifolia Forssk. Sarcocornia fruticosa (L.) A. J. Scott Suaeda pruinosa Lange Helianthemum lippii (L.) Dum. Cours. Helianthemum sancti2antonii Schweinf. ex Boiss. Achillea fragrantissima (Forssk.)Sch.Bip. Achillea santolina L. Artemisia judaica L. Ann. Per. Per. Per. Per. Per. Per. Per. Per. Artemisia monosperma Delile Per. Atractylis boulosii Täckh. Atractylis carduus (Forssk.) C. Chr. Atractylis mernephthae Asch. Atractylis serratuloides Sieber ex Cass. Calendula arvensis L. Calendula tripterocarpa Rupr. Carduus getulus Pomel Carduus pycnocephalus L. Centaurea aegyptiaca L. Centaurea eryngioides Lam. Centaurea pallescens Delile Chiliadenus montanus (Vahl) Brullo Echinops galalensis Schweinf. Echinops spinosus L. Filago desertorum Pomel Hedypnois rhagadioloides (L.) F.W. Schmidt Iflago spicata (Forssk.) Sch. Bip. Iphiona mucronata (Forssk.) Asch. & Schweinf. Iphiona scabra DC. Koelpinia linearis Pall. Launaea capitata (Spreng.) Dandy Launaea fragilis (Asso) Pau Launaea mucronate (Forssk.) Muschl. Launaea nudicaulis (L.) Hook. f. Nauplius graveolens (Forssk.) Wiklund Phagnalon barbeyanum Asch. & Schweinf. Picris altissima Delile Picris longirostris Sch. Bip. Pluchea dioscorides (L.) DC. Pulicaria undulata (L.) C.A.Mey. Reichardia tingitana (L.) Roth Senecio glaucus L. subsp. coronopifolius (Maire) C. Alexander Senecio glaucus L. subsp. glaucus Seriphidium herba2album (Asso) Soják Sonchus asper (L.) Hill Sonchus tenerrimus L. Urospermum picroides (L.) F.W. Schmidt Xanthium spinosum L. Convolvulus lanatus Vahl Convolvulus oleifolius Desr. Convolvulus pilosellifolius Desr. Ipomoea stolonifera (Cyr.) J. F.Gmel. Anastatica hierochuntica L. Brassica deserti Danin & Hedge Brassica tournefortii Gouan Cakile maritime Scop. Carrichtera annua (L.) DC. Conringia orientalis (L.) Dumort. Diplotaxis acris (Forssk.) Boiss. Diplotaxis erucoides (L.) DC. Diplotaxis harra (Forssk.) Boiss. Eremobium aegyptiacum (Spreng.) Asch. & Schweinf. ex Boiss. var. egyptiacum Eremobium aegyptiacum (Spreng.) Asch.&Schweinf. ex Boiss. var. lineare (Delile) Zohary Eruca sativa Mill. Erucaria hispanica (L.) Druce Farsetia aegyptia Turra Per. Lobularia arabica (Boiss.) Muschl. Lobularia libyca (Viv.) C. F. W. Meissn. Malcolmia pygmaea (DC.) Boiss. Ann. Ann. Ann. 16 Spor. Spor. Spor. Spor. Cp. Spor. Cp. Cp. Spor. Ann. Per. Ann. Per. Ann. Ann. Ann. Ann. Per. Per. Ann. Per. Per. Per. Ann. Ann. Ann. Per. Per. Ann. Ann. Ann. Ann. Per. Per. Per. Ann. Ann. Per. Per. Ann. M H M M M, In Mg M, Mg, H, Y M, In M M, Mg, H, L, Y, In L M H,L Mg, L M, In M M M Mg, L, Y M Mg, H, L, In M, Mg, H, Y Mg, H M, Mg, H, Y M In M, In M H, L M H M M, In L Mg L M M M Y M, L, In Ann. Ann. Per. Ann. Ann. Ann. Per. Per. Per. Per. Per. Ann. Ann. Ann. Ann. Ann. Ann. Ann. Ann. Per. c. r. c. r. cc. rr. c. c. r. 1 Cp. 4 Spor. 1 Dom. loc. N.R. in Sinai 1, 2, 3, 4 Dom. loc. 4 Cp. 1, 2, 4 Dom. 1 Spor. 2 Dom. Dom. cc. 1, 2, 3, 4 Spor. Occ. Spor. Occ. Occ. Spor. Spor. Spor. Cp. Cp. Cp. Cp. Occ. Dom. Spor. Spor. Spor. Spor. Spor. Spor. Spor. Spor. Occ. Spor. Spor. Spor. Spor. Spor. Spor. Occ. Occ. rr. c. rr. r. r. r. c. c. cc. r. cc. r. r. cc. cc. cc. r. c. r. r. cc. r. c. cc. rr. r. c. rr. cc. cc. c. N.R. in Sinai 1, 2, 3, 4 Cp. 3 Spor. N.R. in Sinai 1 Occ. 4 Occ. 1, 4 Spor. N.R. in Sinai 1, 2, 3, 4 Cp. 4 Cp. 1, 2, 4 Cp. N.R. in study area 4 Occ. N.R. in Sinai 1, 2, 3, 4 Cp. 1, 4 Occ. 1, 2, 3, 4 Cp. 2, 4 Cp. 2, 4 Cp. 4 Cp. 1, 2, 3, 4 Cp. 1, 3 Cp. 1, 2, 3, 4 Cp. 1, 2, 3, 4 Cp. 1, 2, 3, 4 Cp. 1, 2, 4 Cp. N.R. in Sinai 4 Cp. N.R. in Sinai N.R. in Sinai 1, 2, 4 Cp. Dom. M, H, In Dom. cc. 1, 2, 3, 4 Cp. M, H Mg, L, Y M M M M M, Mg, H In Mg, In M Mg M M M M Mg M M Mg, H, Y Cp. Occ. Spor. Spor. Occ. Spor. Cp. Spor. Cp. Spor. Spor. Spor. Spor. Spor. Spor. Spor. Spor. Occ. Occ. c. c. c. rr. cc. c. r. rr. r. r. c. rr. cc. c. c. rr. c. r. cc. 1, 2, 4 Cp. 1, 2, 3, 4 Dom. N.R. in Sinai N.R. in Sinai 1, 4 Cp. 1 Occ. 1, 3, 4 Dom. loc. 4 Occ. 4 Spor. N.R. in Sinai 2, 4 Dom. loc. 2 Dom. loc. 1, 2, 3 Cp. N.R. in Sinai 2, 4 Occ. N.R. in Sinai 2, 3, 4 Dom. 1 Occ. 2, 4 Dom. Per. M Spor. cc. 1, 2, 3 Dom. Ann. In Spor. rr. 1, 2, 3 Cp. Ann. Ann. M M M, Mg, H, L, Y, In M M M Spor. Occ. cc. c. N.R. in Sinai N.R. in Sinai Cp. cc. 1, 2, 3, 4 Cp. Spor. Spor. c. c. c. 1 Occ. 1 Spor. N.R. in Sinai Cp. Kamel et al. Table (2): continued Cucurbitaceae Cupressaceae Cyperaceae Dipsacaceae Ephedraceae Euphorbiaceae Matthiola longipetala (Vent.) DC. subsp. livida (Delile) Maire Morettia canescens Boiss. Moricandia nitens (Viv.) Durand & Barratte Savignya parviflora (Delile) Webb Sisymbrium irio L. Zilla spinosa (L.) Prantl subsp. spinosa Citrullus colocynthis (L.) Schrad. Juniperus phoenicea L. Cyperus capitatus Vend. Cyperus glaber L. Pterocephalus plumosus (L.) Coult. Scabiosa eremophila Boiss. Ephedra alata Decne. Andrachne aspera Spreng. Andrachne telephioides L. Chrozophora tinctoria (L.) Raf. Euphorbia peplis L. Ann. M, Mg Cp. cc. 2, 4 Per. Per. Ann. Ann. Per. Per. Per. Per. Per. Ann. Ann. Per. Per. Per. Ann. Ann. Spor. Occ. Occ. Occ. Dom. Spor. Occ. Occ. Spor. Spor. Spor. Spor. Spor. Occ. Spor. Cp. rr. r. c. cc. c. cc. rr. c. N.R. r. r. c. r. r. c. r. 2 Cp. 2, 4 Cp. 1, 2, 3, 4 Cp. 4 Cp. 1, 2, 3, 4 Dom. 1, 2, 3, 4 Cp. 4 Dom. N.R. in Sinai N.R. in Sinai N.R. in Sinai 1 Occ. 1, 2, 4 Dom. 2 Cp. 2, 4 Occ. 1, 2, 4 Occ. 1 Spor. Euphorbia retusa Forssk. Per. Cp. c. 1, 2, 3, 4 Cp. Euphorbia terracina L. Per. Ann., Per. Ann. Ann. Ann. Per. Ann. H, In Mg, L M, In M M, Mg, H, Y Mg, H Mg, H, Y M M, In Mg, H M H Y Mg, H H M M, Mg, H, L, Y, In M Spor. c. 1 Occ. M Cp. c. 1 Cp. M M M M M, Mg, L Spor. Spor. Spor. Spor. Occ. r. r. r. cc. r. N.R. in Sinai N.R. in Sinai 1 Occ. 2, 4 Dom. loc. 1, 2, 4 Dom. loc. Ann. M Cp. cc. N.R. in Sinai Per. Per. Ann. Ann. Ann. Ann. Ann. Ann. Ann. Per. In M, Mg, H, Y M M M M M M M H c. c. c. r. r. cc. c. cc. cc. rr. 1, 2, 3, 4 Dom. Loc. 4 Dom. loc. N.R. in Sinai N.R. in Sinai 1 Occ. 1, 2, 4 Occ. 2 Occ. N.R. in study area 1, 2, 3, 4 Dom. loc. N.R. in Sinai Cynodon dactylon (L.) Pers. Per. M, In cc. 1, 2, 4 Eremopyrum bonaepartis (Spreng.) Nevski Hordeum murinum L. subsp. glaucum (Steud.) Tzvelev Hordeum vulgare L. Hyparrhenia hirta (L.) Stapf Imperata cylindrica (L.) Raeusch. Lolium multiflorum Lam. Lophochloa berythea (Boiss & Blanchet) Bor Ann. Ann. Ann. Per. Per. Ann. Ann. rr. c. r. r. cc. cc. 4 Occ. 1, 2, 4 Cp. N.R. in Sinai 1, 2, 4 Cp. 1, 2, 4 Dom. loc. 1 Occ. 1, 4 Cp. Panicum turgidum Forssk. Per. Dom. cc. 1, 2, 3, 4 Parapholis marginata Runem. Phragmites australis (Cav.) Trin. ex Steud. Poa annua L. Poa infirma Kunth Polypogon monspeliensis (L.) Desf. Rostraria pumila (Desf.) Tzvelev Schismus arabicus Nees Schismus barbatus (L.) Thell. Setaria verticillata (L.) P. Beauv. Stipagrostis ciliata (Desf.) De Winter Stipagrostis scoparia (Trin. & Rupr.) De Winter Tetrapogon cenchriformis (A. Rich.) Clayton Trisetaria linearis Forssk. Vulpia pectinella (Delile ) Boiss. Dipcadi erythraeum Webb & Berthel. Leopoldia comosa (L.) Parl. Urginea maritima (L.) Baker Juncus rigidus Desf. Ballota undulata (Fresen.) Benth. Lavandula pubescens Decne. Salvia aegyptiaca L. Salvia lanigera Poir. Stachys aegyptiaca Pers. Ann. Per. Ann. Ann. Ann. Ann. Ann. Ann. Ann. Per. Per. Ann. Ann. Ann. Per. Per. Per. Per. Per. Per. Per. Per. Per. M M M Mg M M M M, Mg, H, L, Y, In M M Mg M In M H M M In M, Mg, H, In L L M M M M, H Mg Mg, H, Y Mg Mg, H, L, Y M M, Mg, H, L, Y Spor. Cp. Spor. Spor. Spor. Occ. Occ. Spor. Spor. Spor. Dom. loc. Spor. Occ. Spor. Spor. Spor. Spor. Occ. Spor. Cp. Spor. Spor. Spor. Spor. Occ. Cp. Spor. Spor. Dom. Spor. Spor. Spor. Spor. Spor. Cp. Occ. Cp. Spor. Cp. Spor. Cp. cc. cc. c. c. cc. c. c. cc. cc. c. c. rr. r. r. c. r. r. cc. r. c. cc. c. cc. N.R. in Sinai 1, 4 Dom. loc. N.R. in Sinai N.R. in Sinai 2, 4 Cp. N.R. in Sinai 1, 2, 3, 4 Cp. N.R. in Sinai 1 Cp. 1, 2, 3, 4 Cp. 1, 3, 4 Dom. N.R. in Sinai N.R. in Sinai N.R. in Sinai 3 Occ. 1 Occ. 1, 4 Cp. 1, 2, 4 Dom. 2, 4 Cp. 2, 4 Cp. 2, 4 Dom. 1, 2, 3, 4 Cp. 2, 4 Dom. Ricinus communis L. Fumariaceae Geraniaceae Globulariaceae Gramineae Hycinthaceae Juncaceae Labiatae Hypecoum pendulum L. Erodium chium (L.) Willd. Erodium ciconium (L.) L’َHér. Erodium crassifolium L’Hér. Erodium laciniatum (Cav.) Willd. Erodium laciniatum (Cav.) Willd. subsp. pulverulentum (Boiss.) Batt. Monsonia nivea (Decne.) Webb Globularia arabica Jaub. & Spach. Aegilops kotschyi Boiss. Aegilops longissima Schweinf. & Muschl. Ammochloa palaestina Boiss. Avena barbata Pott ex Link Bromus rubens L. Cutandia dichotoma (Forssk.) Batt. & Trab. Cutandia memphitica (Spreng.) Benth. Cymbopogon schoenanthus (L.) Spreng. 17 Cp. Dom. loc. Dom. Current status of the flora of North Sinai Table (2): continued Leguminosae Teucrium leucocladum Boiss. Teucrium polium L. Acacia pachyceras O. Schwartz Per. Per. Per. Mg, L Mg, H, Y Mg Acacia tortilis (Forssk.) Hayne Per. M, Mg, H, Y, In Alhagi graecorum Boiss. Astragalus annularis Forssk. Astragalus fruticosus Forssk. Astragalus peregrinus Vahl Astragalus sieberi DC. Astragalus spinosus (Forssk.) Muschl. Astragalus trigonus DC. Colutea istria Mill. Hippocrepis areolata Desv. Hippocrepis cyclocarpa Murb. Lathyrus marmoratus Boiss. & Blanche Per. Ann. Per. Ann. Per. Per. Per. Per. Ann. Ann. Ann. M, In M M M Mg Mg, H, Y In M, Mg M M M Lotus halophilus Boiss. & Spruner Ann. M, L, In Medicago laciniata (L.) Mill. Medicago sativa L. Melilotus indicus (L.) All. Ononis reclinata L. Ononis serrata Forssk. Ononis sicula Guss. Ann. Per. Ann. Ann. Ann. Ann. Retama raetam (Forssk.) Webb & Berthel. Per. M M M M M M M, Mg, H, L, Y, In Tephrosia purpurea (L.) Pers. subsp. apollinea (Delile) Hosni & El Karemy Trifolium resupinatum L. Trifolium tomentosum L. subsp. curvisepalum (Täckh.) Thiéb Trigonella arabica Delile Trigonella cylindracea Desv. Spor. Occ. Occ. Dom. loc. Cp. Spor. Spor. Spor. Spor. Cp. Spor. Spor. Spor. Spor. Spor. Dom. loc. Spor. Cp. Cp. Spor. Cp. Spor. rr. c. rr. 2 2, 4 2, 4 Cp. Cp. Dom. loc. r. 2, 4 Occ. cc. c. r. c. c. cc. c. rr. cc. cc. cc. N.R. in Sinai 1, 2, 4 Occ. N.R. in study area N.R. in Sinai 2 Occ. 2 Cp. 2 Occ. 4 Cp. 1, 2, 4 Cp. N.R. in Sinai N.R. in Sinai cc. 1, 3, 4 Dom. loc. r. c. cc. c. c. r. 2, 4 1 1, 4 4 1, 4 4 Cp. Spor. Cp. Cp. Cp. Cp. Dom. cc. 1, 2, 3, 4 Dom. Per. In Spor. rr. N.R. in study area Ann. M Occ. cc. N.R. in Sinai Ann. M Spor. rr. 1 Cp. Ann. Ann. M M r. r. 1, 2, 4 1 Cp. Occ. Trigonella stellata Forssk. Ann. M c. 1, 2, 3, 4 Cp. Vicia sativa L. Ann. M r. N.R. in study area Malvaceae Malva parviflora L. Ann. M, Mg, H, Y Molluginaceae Telephium sphaerospermum Boiss. Ann. Neuradaceae Neurada procumbens L. Ann. H M, Mg, H, L, Y, In Nitrariaceae Nitraria retusa (Forssk.) Asch. Per. M, Mg, H, In Orobanchaceae Palmae Peganaceae Plantaginaceae Orobanche cernua Loefl. Phoenix dactylifera L. Peganum harmala L. Plantago afra L. Plantago albicans L. Plantago ovata Forssk. Limonium pruinosum (L.) Chaz. Calligonum polygonoides L. Emex spinosa (L.) Campd. Persicaria senegalensis (Meisn.) Soják Polygonum bellardii All. Rumex cyprius Murb. Rumex pictus Forssk. Anagallis arvensis L. Adonis dentata Delile Nigella arvensis L. subsp. taubertii (Brand) Maire Caylusea hexagyna (Forssk.) M. L. Green Ochradenus baccatus Delile Oligomeris linifolia (Vahl ex Hornem.) J.F.Macbr. Reseda arabica Boiss. Reseda orientalis (Müll. Arg.) Boiss. Reseda urnigera Webb Crucianella membranacea Boiss. Haplophyllum tuberculatum (Forssk.) Juss. Kickxia floribunda (Boiss.) Täckh.&Boulos Linaria haelava (Forssk.) Delile Linaria tenuis (Viv.) Spreng. Scrophularia syriaca Benth. Verbascum fruticulosum Post Per. Per. Per. Ann. Per. Ann. Per. Per. Ann. Per. Ann. Ann. Ann. Ann. Ann. Ann. Ann. Per. Ann. Ann. Ann. Ann. Ann. Per. Per. Ann. Ann. Per. Per. M M Mg, H, L, In M M M, In Mg M, Mg, Y M, Mg, In M M Mg M M M L Mg, H, Y Mg, Y M Mg, L H In M, Mg M, Mg, L Mg M M H H Hyoscyamus muticus L. Per. M, Mg, In Spor. Spor. Dom. loc. Spor. Dom. Loc. Spor. Dom. loc. Dom. loc. Spor. Cp. Cp. Spor. Spor. Cp. Spor. Cp. Cp. Spor. Cp. Spor. Cp. Occ. Spor. Spor. Occ. Cp. Spor. Cp. Spor. Spor. Spor. Cp. Spor. Cp. Cp. Spor. Spor. Dom. loc. Plumbaginaceae Polygonaceae Primulaceae Ranunculaceae Resedaceae Rubiaceae Rutaceae Scrophulariaceae Solanaceae 18 cc. 1, 2, 4 Dom. loc. r. 2, 4 Cp. c. 1, 2, 3, 4 Cp. cc. 1, 2, 3, 4 Dom. loc. c. Cult. c. r. c. cc. cc. rr. cc. rr. cc. c. c. cc. cc. r. cc. c. cc. cc. rr. r. r. cc. r. c. r. N.R. rr. 1, 2, 4 Occ. 1, 2, 4 Cp. 1, 2, 4 Dom. loc. 1, 2, 4 Cp. 1 Occ. 1, 2, 3, 4 Dom. 1, 2, 4 Cp. N.R. in Sinai 1, 3, 4 Cp. N.R. in Sinai N.R. in Sinai 1, 4 Cp. 1, 3 Cp. 1, 4 Cp. 1, 4 Occ. N.R. in Sinai 2, 4 Cp. 2, 4 Cp. 1, 2, 4 Cp. 2, 4 Cp. N.R. in Sinai N.R. in Sinai 1 Cp. 1, 2, 3, 4 Cp. 2, 4 Cp. 2, 3, 4 Cp. 1 Cp. N.R. in Sinai 2, 4 Cp. cc. 1, 2, 3, 4 Cp. Kamel et al. Table (2): continued Urticaceae Lycium shawii Roem. & Schult. Nicotiana glauca R.C.Graham Solanum elaeagnifolium Cav. Solanum nigrum L. Solanum sinaicum Boiss. Reaumuria hirtella Jaub. & Spach Tamarix aphylla (L.) H. Karst. Tamarix nilotica (Ehrenb.) Bunge Tamarix tetragyna Ehrenb. Thymelaea hirsuta (L.) Endl. Deverra tortuosa (Desf.) DC. Deverra triradiata Hochst. ex Boiss. Eryngium glomeratum Lam. Ferula sinaica Boiss. Ridolifa segetum (L.)Moris Urtica urens L. Per. Per. Per. Ann. Per. Per. Per. Per. Per. Per. Per. Per. Per. Per. Ann. Ann. Zygophyllaceae Fagonia arabica L. Per. Fagonia glutinosa Delile Fagonia mollis Delile Fagonia scabra Forssk. Tribulus kaiseri Hosni Tribulus terrestris L. Zygophyllum album L.f. Per. Per. Per. Ann. Ann. Per. M, Mg, H, L, Y M M M M M, Mg, H, Y, In Mg M, Mg, H, In M M, Mg, H, L, In M, Mg Y H Mg M M M, Mg, H, L, Y, In Mg, In Mg, H, Y Mg, H, L, Y Mg M M, Mg, L, In Zygophyllum coccineum L. Per. Y Zygophyllum dumosum Boiss. Per. Mg, H, L, Y, In Ann. or M, In Bi. Tamaricaceae Thymelaceae Umbellifera Zygophyllum simplex L. Reseda kahirina was recorded on G. Maghara in 1957 (Boulos, 1960) and enumerated in Täckholm (1974) but not in Boulos (1999). Pennisetum elatum was not recorded since Täckholm (1974). Fifty three peceis were recorded only in Täckholm (1974). Eight of them, Aristolochia maurorum, Anthemis hebronica, Eragrostis sarmentosa, Lathyrus setifolius, Trifolium lappaceum, Trifolium medium, Plantago bellardii, and Aegilops crassa, were considered by Gibali (1988) as doubtful records or needs verification. Eighty eight species were not recroded since 1967 1971 survey (Danin et al., 1985) including nine species (Atriplex glauca, Centaurea procurrens, Conyza Canadensis, Crotalaria aegyptiaca, Reseda stenostachya, Salsola cyclophylla, Scirpus holoschoenus var. australis, Suaeda palaestina, Varthemia iphionoides) were recorded as either dominant or dominant local. Two hundred and seventy four species were recorded by Danin et al. (1985) and other recent surveys (e.g. Gibali, 1988; and El Hadidi et al., 1989) but not present survey. The list of these species includes 88 species were recorded as dominant or dominant local, clueing to the degree of deterioration in natural vegetation of the area since 1967 1971 survey. Nintey one (56.88%) of the 160 species recorded by Boulos and Gibali (1993) in North Sinai as rare and/or threatened species have not been recorded in present survey. The present floristic list includ three new records; Cyperus glaber which is a new record to Egypt, Persicaria sengalensis which is a new record to Sinai, and Eminium spiculatum subsp. negevensis which is a new record to North Sinai. Lophochloa berythea was Dom. Occ. Spor. Spor. Spor. Cp. Spor. Dom. Spor. Dom. Spor. Spor. Spor. Spor. Spor. Occ. cc. c. r. cc. rr. cc. cc. cc. c. cc. cc. r. rr. rr. rr. cc. 1, 2, 3, 4 1 1 1 4 1, 2, 4 1, 2, 4 1, 2, 4 4 1, 2, 3, 4 1, 2, 3, 4 1, 2, 3, 4 4 1 1 1 Dom. Cp. Cp. Cp. Cp. Dom. Dom. loc. Dom. Occ. Dom. loc. Dom. loc. Cp. Occ. Occ. Occ. Occ. Dom. Dom. cc. 1, 2, 3, 4 Spor. Cp. Cp. Spor. Occ. Spor. Dom. loc. Spor. c. c. r. c. cc. 1, 2, 3, 4 Dom. loc. 2, 3, 4 Dom. 2, 4 Cp. N.R. in Sinai 1 Occ. 1, 2 Dom. cc. 1, 2 Dom. rr. 1, 2, 3, 4 Dom. Cp. cc. 1, 2 Dom. collected in present survey and by Danin et al. (1985), altghouh it is not included in the Flora of Egypt (Täckholm, 1974; and Boulos 2005). The present survey confirms the presence of Scrophularia syriaca that was reported as new record to the Egyptian flora by Gibali (1988) and presence of Reseda orientalis that was categorized as doubtfull by Gibali (1988). Other confirmed species include Allium curtum subsp. curtum, Asparagus aphyllus, Atractylis boulosii, Atriplex rosea, Hypecoum pendulum, Parapholis marginata, Persicaria senegalensis, Polygonum bellardii, Pterocephalus plumosus, Reseda urnigera, and Vulpia pectinella which were not recorded since Täckholm (1974). Three hundred and forty nine species (51.3%) of the recorded species by Danin et al. (1985) were disappeared in the present survey. This explains the low Sørenson's similarity between the present and the previous surveys (49.6 %) and, in the meantime, reflects the magnitude of change in species composition occurred since the previous survey (1967 1971). Supportive to this result, the RELATE function has not detected any significant relation (global R = 1, significance level = 16.4%) between the species composition of the present and previous surveys. The inland area was the most affected by species loss where the recorded species decreased from 283 to 58 (79.5% loss). Species loss percentage decreased from 79.5% in inland area to 64.2% in anticlines and 43.3% in Mediterranean area. Losses in the recorded number of species was reflected in increasing diversity between different eco geomorphological areas where similarity 19 Current status of the flora of North Sinai Figure (2): Distributional composition of present and previous (Danin et al., 1985) statuses of North Sinai. between different eco geomorphological areas has been.reduced over the time elapsed between two surveys. It changed form 83.60% between anticlines and inland to 36.84%, from 67.94% to 31.78%, and from 67.33% to 29.39% between Mediterranean coast and inland, respectively. Not only was the floristic composition changed but also the distribution of the recorded species. While present study revealed that majority (52.3%) of the North Sinai flora are sporadic, only 12.7% was recorded as sporadic by Danin et al. (1985). The change was at its maximum in Mediterranean coastal area where the percentage of sporadic species changed from 14% to 50% (figure 2), followed by anticlinal (from 8% to 40%) and inland area (from 1% to 29%). Changes in floristic structure Changes in floristic composition resulted in changes in floristic structure (distribution of the species among families). The most affected families were Compositae (39 spp., 48.1% loss), Gramineae (38 spp., 55.1% loss), Leguminosae (26 spp., 48.1% loss), and Chenopodiaceae (23 spp., 52.3% loss), while the most affected families by percentage of loss were Amaranthaceae (6 spp., 85.7% loss), Malvaceae (4 spp., 80.0% loss), Asphodelaceae (3 spp., 75.0% loss), Cistaceae (6 spp., 75.% loss), and Boraginaceae (13 spp., 72.2% loss). Twenty families (27.7% of previous status) were entirely not represented in the current survey: Acanthaceae, Anacardiaceae, Aspleniaceae, Berberidaceae, Crassulaceae, Cynomoriaceae, 20 Kamel et al. dry weather prevailed during the study time. However, the high percent of not recorded floristic list (62.3%) indicates that real changes in floristic composition and structure have been occurred. Beside the prevailing drought, the recorded changes could be attributed to increment of unmanaged human induced threats affecting wild plants. These threats include; (1) Over cutting for fuel use, (2) Over collection for household use and trade, (3) Overgrazing, (4) Urbanization including extensive land reclamation, and establishment of settlements and infrastructure, and (5) Quarrying. The ordering of threats differs from district to district, site to site and from species to species. The present study revealed that inland district, which been affected mostly by drought, over grazing, and over collection, is the most affected eco geomorphological area, followed by Mediterranean coast and anticlines. In Mediterranean coastal area, the most destructive threats are the over collection and urbanization activities. Each family (with average of 5 persons) consumes about 10 kg of wood daily. The most common and favorable species used as a fuel are Anabasis articulata, Artemisia judaica, Retama raetam, Haloxylon salicornicum, Acacia pachyceras, and Acacia tortilis. The over collection of medicinal species has been carried out for home daily uses, and local and national trade. Artemisia judaica, Teucrium polium, Citrullus colocynthis, Seriphidium herba2album, Artemisia monosperma, Juniperus phoenicea, and some Lichens are the most prominent items in the market. Urbanization such as extensive land reclamation as in El Sheikh Zwaied and Rafah, establishment of settlements and infrastructure, and digging wells for establishing new gardens remove natural plant communities and destroy the landscape of the area. In anticlinal mountainous area (G. Yi'allaq, G. Halal and G. Maghara), quarrying is the most threating activity besides over cutting and overgrazing. Collection of sands and cobbles by digging and cutting the sedimentary rocks of G. Yi'allaq, G. Maghara and G. Halal cause dangerous disturbance for the plant communities and flrositic composition of the area represented in disappearance of palatable and medicinal species, paucity of trees and soil loss. While Boulos (1960) recorded 199 species in G. Maghara (Table 1), the present survey recorded only 131 from the whole anticalinal area (G. El Halal, G. El Maghara, G. Libni, and G. Yi'alleq) which means that 34.2% lose of the previous status in this area. Acacia pachyceras and Acacia tortilis are the most threatened species in the area as a cause of quarrying. One can observe 2km radius clear of vegetation area around any settlement due to fuel wood collecting and overgrazing. The increment in strength of threatening human induced stresses was basically due to growth of human population size. According to 1996's official census, the total size of the population in North Sinai Governorate Frankeniaceae, Iridaceae, Liliaceae, Menispermaceae, Onagraceae, Oxalidaceae, Papaveraceae, Polygalaceae, Portulaceae, Rhamnaceae, Santalaceae, Sinopteridaceae, Typhaceae, and Verbenaceae (Table 3). At the genus level, 127 genera were not represented in the current survey (40.2% of previous status). The most affected families were Compositae (26 genera, 51.0%) and Gramineae (23 genera, 47.9%). Relative to the original number of genera, Rubiaceae (4 genera, 80.0%), Malvaceae (3 genera, 75.0%), and Boraginaceae (6 genera, 66.7%) were the most affected families (Table 3). The RELATE function did not detect any relation between the current and previous surveys (global R= 0.5, and significance level = 49.1%) in floristic structure reflecting the change over time. Also, the similarity in floristic structure between eco geomorphological areas has been reduced from 82.94% to 60.28% between anticlines and inland, from 78.23% to 72.29% between Mediterranean coast and anticlines, and from 78.17% to 56.78% between Mediterranean and inland. These results of change in floristic structure were strengthened by Friedman test results (Table 4) where it showed a significant difference between the surveys (present, previous, and virtual previous) in number of species, number of genera, and the number of species with different degree of occurrence in each family. Beta diversity between the present and previous surveys indicates that change in floristic structure is higher in inland area (βT = 0.32), followed by Mediterranean area and anticlines (βT = 0.20 and 0.19, respectively). Discussion Change in floristic composition and structure due to human disturbances (e.g. Abbott et al., 2000, Felfili et al., 2000, and Ruhan et al., 2001) and/or climatic change (e.g. Medina, 2003; Anenkhonov and Krivobokov, 2006) have been documented worldwide. The comparisons of the floristic composition and structure in present study revealed that the flora of North Sinai has changed dramatically in the past 40 50 years. More than 60% of the previously recorded species are not recorded in present survey. The most affected families by loss of species are the most represented families in North Sinai flora; Compositae, Gramineae, Leguminosae, and Chenopodiaceae, while the most affected families by percentage of loss are Amaranthaceae, Malvaceae, Asphodelaceae, Cistaceae, and Boraginaceae where their species are normally poorly found. Twenty families were represented before but not in current survey. Off course this list of not recorded species and families would be reduced if a multi year survey is carried out. It is well known that poor recording of species has natural and methodological reasons (Danin et al., 1985). Annual species which develop only in rainy years may be regarded as rare plants or even not recorded at all if only 21 Current status of the flora of North Sinai Table (3): Floristic composition of present and previous survey. Present Status Family Acanthaceae Aizoaceae Alliaceae Amaranthaceae Amaryllidaceae Anacardiaceae Araceae Asclepiadaceae Asparagaceae Asphodelaceae Aspleniaceae Berberidaceae Boraginaceae Capparaceae Caryophyllaceae Chenopodiaceae Cistaceae Compositae Convolvulaceae Crassulaceae Cruciferae Cucurbitaceae Cupressaceae Cynomoriaceae Cyperaceae Dipsacaceae Ephedraceae Euphorbiaceae Frankeniaceae Fumariaceae Geraniaceae Globulariaceae Gramineae Hycinthaceae Iridaceae Juncaceae Labiatae Leguminosea Liliaceae Malvaceae Menispermaceae Molluginaceae Neuradaceae Nitrariaceae Dom. L. Dom. Cp. 1 1 Spp. % Genera % Occ. Spor. 4 2 1 1 1.42 0.71 0.36 0.36 2 1 1 1 1.06 0.53 0.53 0.53 1 3 2 1 0.36 1.07 0.71 0.36 1 3 1 1 0.53 1.59 0.53 0.53 5 2 15 21 2 42 4 1.78 0.71 5.34 7.47 0.71 14.95 1.42 3 2 9 13 1 25 2 1.59 1.06 4.76 6.88 0.53 13.23 1.06 23 1 1 8.19 0.36 0.36 18 1 1 9.52 0.53 0.53 2 2 1 7 0.71 0.71 0.36 2.49 1 2 1 4 0.53 1.06 0.53 2.12 3 1 1 2 1 3 1 6 1 31 3 0.36 2.14 0.36 11.03 1.07 1 2 1 25 3 0.53 1.06 0.53 13.23 1.59 1 1 2 1 1 1 4 1 7 28 0.36 2.49 9.96 1 5 15 0.53 2.65 7.94 1 0.36 1 0.53 1 1 1 1 0.36 0.36 0.36 1 1 1 0.53 0.53 0.53 1 1 2 2 1 1 1 1 1 1 1 2 3 1 2 1 1 1 1 2 4 5 1 8 2 2 6 3 8 6 1 1 9 7 1 23 2 13 1 1 1 2 1 1 3 3 5 5 1 1 2 21 2 3 17 1 Previous Status Difference between previous and present surveys Spp. % Genera % 1 0 3 6 2 2 0 2 1 3 1 1 13 3 10 23 6 39 3 2 5 1 0 1 2 1 2 8 2 1 3 0 38 6 1 1 8 26 2 4 1 0 0 0 100 0.0 60.0 85.7 66.7 100.0 0.0 40.0 100.0 75.0 100.0 100.0 72.2 60.0 40.0 52.3 75.0 48.1 42.9 100.0 17.9 50.0 0.0 100.0 50.0 33.3 66.7 53.3 100.0 1 0 0 0 0 2 0 1 0 1 1 1 6 0 3 3 1 26 0 2 6 1 0 1 1 0 0 0 1 1 0 0 23 3 1 0 5 4 2 3 1 0 0 0 100 0.0 0.0 0.0 0.0 100.0 0.0 25.0 0.0 50.0 100.0 100.0 66.7 0.0 25.0 18.8 50.0 51.0 0.0 100.0 25.0 50.0 0.0 100.0 50.0 0.0 0.0 0.0 100.0 Spp. % Genera % 1 4 5 7 3 2 1 5 1 4 1 1 18 5 25 44 8 81 7 2 28 2 1 1 4 3 3 15 2 0 9 1 69 9 1 2 15 54 2 5 1 1 1 1 0.17 0.70 0.87 1.22 0.52 0.35 0.17 0.87 0.17 0.70 0.17 0.17 3.14 0.87 4.36 7.68 1.40 14.14 1.22 0.35 4.89 0.35 0.17 0.17 0.70 0.52 0.52 2.62 0.35 0.00 1.57 0.17 12.04 1.57 0.17 0.35 2.62 9.42 0.35 0.87 0.17 0.17 0.17 0.17 1 2 1 1 1 2 1 4 1 2 1 1 9 2 12 16 2 51 2 2 24 2 1 1 2 2 1 4 1 0 2 1 48 6 1 1 10 19 2 4 1 1 1 1 0.31 0.63 0.31 0.31 0.31 0.63 0.31 1.26 0.31 0.63 0.31 0.31 2.83 0.63 3.77 5.03 0.63 16.04 0.63 0.63 7.55 0.63 0.31 0.31 0.63 0.63 0.31 1.26 0.31 0.00 0.63 0.31 15.09 1.89 0.31 0.31 3.14 5.97 0.63 1.26 0.31 0.31 0.31 0.31 22 Dom. L. Dom. Cp. Occ. Spor. 2 1 1 1 3 5 2 2 2 1 2 1 2 1 1 2 17 8 4 4 1 1 11 2 6 2 4 8 4 17 5 4 43 1 11 2 3 2 1 4 3 3 1 15 2 1 7 1 1 2 2 8 1 9 3 2 1 1 3 1 1 4 1 2 1 4 1 6 5 1 1 2 1 5 1 0 3 25 2 1 8 19 1 1 1 1 1 1 6 1 3 1 1 1 27 6 7 1 1 3 18 1 2 1 2 11 1 33.3 0.0 55.1 66.7 100.0 50.0 53.3 48.1 100.0 80.0 100.0 0.0 0.0 0.0 0.0 0.0 47.9 50.0 100.0 0.0 50.0 21.1 100.0 75.0 100.0 0.0 0.0 0.0 Kamel et al. Table (3): continued Onagraceae Orobanchaceae Oxalidaceae Palmae Papaveraceae Peganaceae Plantaginaceae Plumbaginaceae Polygalaceae Polygonacaceae Portulacaceae Primulaceae Ranunculaceae Resedaceae Rhamnaceae Rubiaceae Rutaceae Santalaceae Scrophulariaceae Sinopteridaceae Solanaceae Tamaricaceae Thymelaeaceae Typhaceae Umberlliferae Urticaceae Verbenaceae Zygophyllaceae 1 0.36 1 0.53 1 1 0.36 1 0.53 1 1 3 1 0.36 1.07 0.36 1 1 1 0.53 0.53 0.53 1 1 6 2.14 5 2.65 4 1 2 6 0.36 0.71 2.14 1 2 4 0.53 1.06 2.12 1 1 0.36 0.36 1 1 0.53 0.53 1 5 1.78 4 2.12 2 6 4 1 2.14 1.42 0.36 4 2 1 2.12 1.06 0.53 5 1 1.78 0.36 4 1 2.12 0.53 10 3.56 3 1.59 2 1 2 1 2 1 2 3 1 1 1 1 1 3 1 1 3 2 5 1 3 3 2 2 1 3 1 1 1 1 9 3 1 7 1 2 4 8 3 6 2 1 12 1 11 7 1 1 12 2 1 11 0.17 0.52 0.17 0.17 0.17 0.17 1.57 0.52 0.17 1.22 0.17 0.35 0.70 1.40 0.52 1.05 0.35 0.17 2.09 0.17 1.92 1.22 0.17 0.17 2.09 0.35 0.17 1.92 1 2 1 1 1 1 1 2 1 5 1 2 3 4 2 5 1 1 5 1 5 2 1 1 10 2 1 3 0.31 0.63 0.31 0.31 0.31 0.31 0.31 0.63 0.31 1.57 0.31 0.63 0.94 1.26 0.63 1.57 0.31 0.31 1.57 0.31 1.57 0.63 0.31 0.31 3.14 0.63 0.31 0.94 1 1 2 1 1 2 1 0 1 0 6 2 1 1 1 1 2 2 3 5 1 1 7 1 5 3 0 1 7 1 1 1 1 1 1 1 6 2 1 1 1 2 1 1 6 1 1 1 6 1 1 1 1 3 1 11 1 8 2 3 1 1 2 1 2 1 1 1 3 1 1 7 1 1 3 1 1 2 6 1 1 1 2 1 1 1 0 1 0 0 1 1 0 1 1 1 0 2 4 0 1 1 1 1 0 0 1 6 1 1 0 100.0 66.7 100.0 0.0 100.0 0.0 66.7 66.7 100.0 14.3 100.0 50.0 50.0 25.0 100.0 83.3 50.0 100.0 58.3 100.0 45.5 42.9 0.0 100.0 58.3 50.0 100.0 9.1 100.0 50.0 100.0 0.0 100.0 0.0 0.0 50.0 100.0 0.0 100.0 50.0 33.3 0.0 100.0 80.0 0.0 100.0 20.0 100.0 20.0 0.0 0.0 100.0 60.0 50.0 100.0 0.0 Table (4): Friedman test results for significant difference between present and previous surveys of North Sinai flora. Eco$ geomorphological area North Sinai Mediterranean Cost Anticlines Inland Survey Previous Virtual Previous Current Grand Median Previous Current Grand Median Previous Current Grand Median Previous Current Grand Median No. of spp. *** No. of genera *** Dom. *** Dom. L. *** Sum of Est. Sum of Est. Sum of Est. Sum of Est. Median Ranks Median Ranks Median Ranks Median Ranks 2.67 183.5 1.33 176.0 0.00 150.5 0.00 152.5 2.33 153.0 1.00 144.5 0.00 150.5 0.00 152.5 1.00 95.5 0.67 111.5 0.00 131.0 0.00 127.0 2.00 1.00 0.00 0.00 1.50 123.0 1.00 118.5 0.00 112.0 0.00 113.5 0.50 93.0 1.00 97.5 0.00 104.0 0.00 102.5 1.00 1.00 0.00 0.00 1.50 132.0 1.50 128.0 0.00 114.5 0.00 111.5 0.50 84.0 0.50 88.0 0.00 101.5 0.00 104.5 1.00 1.00 0.00 0.00 1.00 127.0 0.75 124.5 0.00 114.5 0.00 113.5 0.00 89.0 0.25 91.5 0.00 101.5 0.00 102.5 0.50 0.50 0.00 0.00 23 Cp. *** Est. Sum of Median Ranks 1.00 166.5 0.67 154.0 0.33 111.0 0.67 0.50 119.0 0.50 97.0 0.50 0.50 123.0 0.50 93.0 0.50 0.50 123.5 0.50 92.5 0.50 Occ. *** Est. Median 0.67 0.33 0.00 Spor. ** Sum of Ranks 165.5 148.0 118.5 Est. Median 0.00 0.00 0.00 118.0 98.0 0.00 0.00 120.0 96.0 0.00 0.00 115.5 100.5 0.00 0.00 0.33 0.00 0.0 0.00 0.00 0.00 0.00 0.00 101.5 114.5 0.00 0.00 0.00 0.00 Sum of Ranks 141.5 131.5 159.0 103.5 112.5 0.00 104.5 111.5 0.00 Current status of the flora of North Sinai is 252160 persons. Nonetheless, 2003 estimates for the total size of the population raises the earlier figure to 326816 persons. This estimate assumed a natural population growth rate of 4%, where the percentage of inhabitants of the town represent 58% while males represent 52% from the total population size (North Sinai Governorate, 2004). The population is concentrated in the northern coastal area specially El Arish and Rafah cities that have the highest population density where the society has been transformed from pastoral to an agricultural. The total area of the cultivated lands has increased from 34093 Feddans in 1982 to 192122 Feddans of gardens and fields of vegetables and cereals (North Sinai Governorate, 2004). The five times and half increase in the cultivated lands since 1982 are taken as a strong indication that agriculture has become one of the main professions in the region especially after digging El Salam canal. Table (5) confirms the transformation from a pastoral society to an agricultural one. The number of cows and buffalos, which are farm animals, are more than doubled between 1997 and 2003. On the contrary, the number of sheep and goats declined during the same period, which indicates the dwindling of pastoral practices among the Bedouins of northern Sinai. Table (5) also indicates that the number of camels has dramatically plunged into lower figures during the 1997 and 2003 period. Nonetheless, the progress in transportation and communication as many roads are constructed and paved has strengthened the human impact on previously remote areas. In the central part of North Sinai (inland), the population density decrease and the economic activities is mainly pastoralism and plant collection for trade. The collected plants are used for many purposes rather than as a medicine; Emex spinosus, Reaumuria hirtella, Diplotaxis harra, Trichodesma africanum, Zilla spinosa, Centaurea eryngioides, and Rumex pictus are been eaten, Anabasis articulata is used in cleaning, and Calligonum comosum for leather tanning. Artemisia judaica, Achillea fragrantissima, Juniperus phoenicea and Seriphidium herba2album are among the most traded plants from North Sinai. Although the distribution level was basically determined in present study with a different index than that in previous survey (Danin et al., 1985), the apparent change is still real that the error in estimating changes due to using different indices would appear in distribution not for presence or absence of the taxon. Meanwhile, the annuals represent 49% of the collected species which is normal to study area and even higher than that of Gazar et al. (2000). This means that a fairly high percent of the un recorded species are biennial or perennial which are normally not affected by prevailing weather and in turn indicates that the observed change is real not a matter of methodological reasons. On the other hand, the index used in current survey is more Table (5): Comparing the evolution of livestock growth in North Sinai Governorate between 1997 and 2003.* Year Livestock Type Cows Buffaloes Cheep Goats Camels Total 1997 2003 1574 73 138931 249289 13893 3629 164 124719 162280 2748 Difference Amount % 2055 91 14212 87009 11145 130.60 124.70 10.20 34.90 80.20 *Source: North Sinai Governorate, Information and Decision Support Center, Census Book 2004; March 2004; p.205. The table is prepared by the author. accurate than the index used by Danin et al. (1985) as it is biased to companion (Cp.) estimation, especially in Inland area. In conclusion, under the prevailing drought conditions which manifest the human induced threats, if the present pressure on wild vegetation has not been altered or relieved, the documented drift in floristic composition and structure would be continue leading to more loss in North Sinai flora. To stop this drift, a number of natural flora refugee sites should be established representing different habitats along the three eco geomorphological areas in North Sinai. ACKNOWLEDGMENTS The authors would like to express thanks to Mr. Hamada El Sayed, Mr. Ayman Abd El Hamid, and Miss Amal Ibrahim for helping in collecting and preparing specimens. REFERENCES ABBOTT, I., N. MARCHANT, AND R. CRANFIELD. 2000. Long term change in the floristic composition and vegetation structure of Carnac Island, Western Australia. Journal of Biogeography 27(2): 333 346. ABD EL WAHAB, R.H. 2003. Ecological evaluation of soil quality in South Sinai, Egypt. Ph.D. thesis. Botany Department, Faculty of Science, Suez Canal University, Ismailia, Egypt. ABD EL WAHAB, R.H., M.S. ZAGHLOUL, AND A.A. MOUSTAFA. 2004. Conservation of Medicinal Plants in St. Catherine Protectorate, South Sinai. I. Evaluation of ecological status and human impact. Proceedings of First International Conference on Strategy of Egyptian Herbaria. 231 251 March 9 11; Giza, Egypt. ANENKHONOV, O.A., AND L.V. KRIVOBOKOV. 2006. Trends of changes in the floristic composition of forest vegetation in the northern Baikal region upon climate warming. Russian Journal of Ecology 37(4): 251 256. AYYAD, M.A., AND S.I. GHABBOUR. 1986. Hot deserts of Egypt and the Sudan. In M. Evenari et al. (eds.), Ecosystems of the World, Hot deserts and arid shrublands. Elsevier, Amsterdam 12B: 149 202. BATANOUNY, K.H. 1964. Sand dune vegetation of El Arish area. Bulletin of Faculty of Science Cairo University 39: 11 23. 24 Kamel et al. BOULOS, L. 1960. Flora of Gebel El Maghara, North Sinai. Agricultural extension department editing and publication section, Herbarium section, Ministry of Agriculture. General Organisation for Government Printing Offices, Cairo. BOULOS, L. 1995. Flora of Egypt (Checklist). Al Hadara Publishing, Cairo Egypt. BOULOS, L. 1999. Flora of Egypt. (Azollaceae Oxalidaceae). Al Hadara publishing, Cairo, Egypt, I. BOULOS, L. 2000. Flora of Egypt. (Geraniaceae Boraginaceae). Al Hadara Publishing, Cairo, Egypt II. BOULOS, L. 2002. Flora of Egypt. (Verbenaceae Compositae). Al Hadara Publishing, Cairo, Egypt III. BOULOS, L. 2005. Flora of Egypt. (Alismataceae Orchidaceae). Al Hadara Publishing, Cairo, Egypt III. BOULOS, L., AND M. GIBALI. 1993. List of rare, vulnerable, endangered and endemic species of vascular plants in the Sinai Peninsula. Proceeding of the 1st Egyptian Hungarian Conference on Environment 275 282. CLARKE, K.R., AND R.M. WARWICK. 2001. Change in Marine communities: An approach to statistical analysis and interpretation, 2nd edition. Primer E: Plymouth. DANIN, A. 1973. Contributions to the flora of Sinai II. New records. Israel Journal of Botany 22: 18 32. DANIN, A. 1978. Plants species diversity and ecological districts of the Sinai desert. Vegetatio 36: 83 93. DANIN, A. 1983. Desert Vegetation of Israel and Sinai. Jerusalem: Cana Publishing House. DANIN, A. 1986. Flora and Vegetation of Sinai. Proceedings of the Royal Society of Edinburgh 89B: 159 168. DANIN, A. 1987. Contributions to the flora of Israel and Sinai. I. Studies in the Apopetalous genera Minuartia, Silene, Polygala and Sedum. Israel Journal of Botany 36: 63 71. DANIN, A. 1988. Contribution to the flora of Israel and Sinai, III. Observations on two species of Onopordum. Israel Journal of Botany 37: 57 59. DANIN, A., A. SHMIDA, AND A. LISTON. 1985. Contribution to the flora of Sinai III Checklist of the species collected and recorded by the Jerusalem team. Willdenowia 15: 255 322. DANIN, A., AND E. SMALL. 1989. Contribution of the flora of Israel and Sinai, V. Trigonella sibthorth Bioss., a new record from Israel. Israel Journal of Botany 38: 121 124. DANIN, A., AND I.C. HEDGE. 1973. Contributions to the flora of Sinai: I. New and confused taxa. Notes Research of Botanical Garden of Edinburgh 32: 259 271. EL HADIDI, M.N. 1966. The genus Fagonia L. in Egypt. Candollea 21: 13 54. EL HADIDI, M.N. 1969. Observations on the flora of the Sinai mountain region. Bulletin of Society of Geography of Egypt 40: 10 155. EL HADIDI, M.N, A.I. HOSNY, S.M. EL NAGGAR, A. EL HADIDY, Z.A.R. EL KAREMY, H.A. HOSNI, N. EL HUSSEINI, M.M. ZAREH, AND A. FAYED. 1989. Annotated list of the flora of Sinai (Egypt). Taeckholmia 12: 1 100. EL BANA, M.I., A.A. KHEDR, AND P. VAN HECKE. 2000. Plant life in two Mediterranean lakes before the construction of the River Nile Canal in Sinai, Egypt. In: Ceulemans R., J. Bogaert, G. Deckmyn, and I. Nijs (Eds), Topics in Ecology: Structure and Function in Plants and Ecosystems. Univ. Antwerp (UIA), Antwerp, pp. 281 290. EL BANA, M.I., A.A. KHEDR, P. VAN HECKE, AND I. BOGAERT. 2002. Vegetation composition of a threatened hypersaline lake (Lake Bardawil), North Sinai. Plant Ecology 163: 63 75. FEINBRUN DATHAN, N. 1978. Flora Palaestina. Israel Academy of Sciences and Humanities, Jerusalem 3. FEINBRUN DOTHAN, N. 1986. Flora Palaestina. Israel Academy of Sciences and Humanities, Jerusalem 4. FELFILI, J.M., A.V. REZENDE, M.C. DA SILVA JÚNIOR. 2000. Changes in the floristic composition of cerrado sensu stricto in Brazil over a nine year period. Journal of Tropical Ecology 16: 579 590. GAMAL ELDIN, E.M. 1993. Contributions to the flora of Gebel Halal, North Sinai, Egypt. Taeckholmia 14: 59 70. GAZAR, M.H., A.A. MOUSTAFA, AND W.M. KAMEL. 2000. Ecological notes and floristic composition of Gebel El Halal, North Sinai, Egypt. Bulliten of Faculty of Science, Assiut University 29(1$D): 323 334. GIBALI, M.A.A. 1988. Studies on the Flora of Northern Sinai. M.Sc. Thesis. Cairo University. GIBALI, M.A.A. 2000. Plant Life in Northern Sinai Ecological and Floristic Studies. Ph.D. Thesis. Cairo University. GREIG SMITH, P. 1983. Quantitative Plant Ecology. 3rd edition. Oxford: Blackwell Scientific Publications. MAGURRAN, A.E. 1988. Ecological diversity and its measurement. Princeton University Press. Princeton, New Jersy. MCGINNINES, W.G., B.J. GOLDMAN, AND P. PAYLORE. (EDS.) 1968. Deserts of the world. An appraisal of research into their physical and biological environments. University of Arizona Press, Tucson, Arizona. MEDICINAL PLANTS CONSERVATION PROJECT. 2006. National Survey. Final report prepared by a research team: 2 North Sinai. EEAA. MEDINA, A.L. 2003. Historical and recent flora of the Santa Rita experimental range. USDA Forest Service Proceedings RMRS. MOUSTAFA, A.A., M.S. ZAGHLOUL, R.H. ABDEL WAHAB, AND M. SHAKER. 2001. Evaluation of plant diversity and endemism in Saint Catherine Protectorate, South Sinai, Egypt. Egyptian Journal of Botany 41: 123 141. NORTH SINAI GOVERNORATE. 2004. Census Book. Information and Decision Support Center. RUHAN, Y., I. HAYASHI, T. NAKAMURA, AND 25 Current status of the flora of North Sinai M. SHIYOMI. 2001. Changes in floristic composition of grasslands according to grazing intensity in Inner Mongolia, China. Journal of Japanese Society of Grassland Science 47(4): 362 369. SAID, R. 1990. The geology of Egypt, Elsevier Publishing, Amsterdam. TÄCKHOLM, V. 1974. Student's flora of Egypt. Published by Cairo University, Beirut. WILSON, M.V., AND A. SHMIDA. 1984. Measureing beta diversity with presence absence data. Journal of Ecology 72: 1055 1064. ZAGHLOUL, M.S. 1997. Ecological studies on some endemic plant species in South Sinai, Egypt. M. Sc. Thesis, Faculty of Science, Suez Canal University. ZAGHLOUL, M.S. 2003. Population ecology of genus Ballota growing in southern Sinai, Egypt. Ph.D. Thesis, Faculty of Science, Suez Canal University. ZAHRAN, M.A., AND A.J. WILLIS. 1992. The Vegetation of Egypt. Chapman and Hall , London. ZOHARY, M. 1966. Flora Palaestina. Israel Academy of Sciences and Humanities. Jerusalem 1. ZOHARY, M. 1972. Flora Palaestina. Israel Academy of Sciences and Humanities. Jerusalem 2. Received December 12, 2007 Accepted April 30, 2008 ZKH[MT‫ وا‬W]H^_T‫ ا‬:‫ء‬HIJK ‫ل‬HMN ‫را‬QRST U‫اه‬WT‫ ا‬XYQT‫ا‬ `Sab‫ ﻡ‬UMdWT‫ا‬efg ‫ؤوف‬WT‫ا‬efg‫ب و‬H‫ه‬QT‫ا‬efg U^d kl‫ل ورأ‬QRn‫ ز‬epK eMq‫ وﻡ‬r‫ﻡ‬H‫ آ‬eMq‫ء ﻡ‬Hl‫و‬ xyr ،lmjmt_u‫ﺱ‬w‫ ا‬،o‫ی‬ieb‫_ة ا‬af lkr_s ،‫م‬ijkb‫ ا‬lmj‫ آ‬،‫`_ت‬ab‫ ا‬def `‫ﺏـــ‬WpT‫ ا‬v_RMT‫ا‬ ‫†…_ط‬ab‫…‡ ا‬t ˆ{_…ab‫ وا‬Š…m‫آ‬x‹b‫ی‡ وا‬i…Œ‹b‫…• ا‬m‫…‡ ﺡ‬r ‫_ء‬am…‫_ل ﺱ‬u‘ ‫را‬ij‚ |‚ l’‫ی‬€~b‫ات ا‬xm“‹b‫ ا‬dmmz{ |b‫ إ‬lmb_~b‫ ا‬l‫راﺱ‬€b‫‚• ا‬€‫ه‬ l…j’ur œ…fir l…—_u‫ﺙ‬ž‫ ‚…| ﺙ‬l…m{_`ab‫اع ا‬i…‫ی…¡ ا ﻥ‬xk{‫ و‬€…‫ رﺹ‬d…{ €…zj‚ ‫ف‬€…¢b‫ا ا‬£‫ ه‬¤mz~‹b‫ و‬.lz”aub_‫ ﺏ‬x‫_ﺹ‬kub‫ ا‬€—_eb‫™_ف ا‬šb‫_ﻥ| وا‬e‫ﻥ‬w‫ا‬ €…‫_—‹…_ن واﺡ‬r ¡…‫ی‬xk{‫ و‬œ…muš{ ‡…t l…‫راﺱ‬€b‫© ا‬£…¢b |‫اﻥ‬€…mub‫`~…• ا‬b‫ وﻥ…‹ˆ ا‬.‫_ء‬am…‫_ل ﺱ‬u…‘ |…‚ l™j‹¥ub‫¦_ت ا‬m`b‫| ا‬jt lt‫ز‬ir lz”ar l—_ub d…{ ‫اع‬i…‫ أﻥ‬l…‫ﺙ‬ž‫…| ﺙ‬jt l…u—_zb‫© ا‬£…‫• ه‬ju‹…‘‫ وأ‬.ljm…y‚ ‡m…eu‫…_ن وﺥ‬a‫ ‚…| إﺙ‬oa…s ‡m‫…_ﻥ‬u‫ وﺙ‬lk`…‫ وﺱ‬l…—_r |…b‫‡ إ‬mmu‹ar |{_`‫ع ﻥ‬i‫‡ ﻥ‬m‫_ﻥ‬u‫وﺙ‬ ‫( أو‬Persicaria sengalensis) ‫_ء‬am…‫( أو ‚…| ﺱ‬Eminium spiculatum subsp. negevensis) ‫_ء‬am…‫_ل ﺱ‬u…‘ |…‚ ‫اء‬i‫ة ﺱ‬xr ‫ ول‬d¢jmše{ ©£…¢b ‫ﻥ‹†…_ر‬w‫ وا‬œ‫زی‬i‹b‫ ا‬dmmz‹‫• ﺏ‬r_f ‡Œb‫¬ و‬z‚ ‫دة‬isiub‫اع ا‬i‫ ا ﻥ‬€‫| رﺹ‬jt l‫راﺱ‬€b‫ ا‬xy‹z{ db‫ و‬.(Cyperus glaber) xyr |‚ |‹‫ﺡ‬ .‫_ت‬amk`eb‫_ت وا‬am‹eb‫• ‚| ا‬u{ |‹b‫ وا‬l‫راﺱ‬€b‫ ا‬lz”ar |jt lz‫_ﺏ‬eb‫راﺱ_ت ا‬€b‫ح وا‬ieub_‫ ﺏ‬œ‫زی‬i‹b‫ وا‬€s‫ا‬i‹b‫ ا‬l‫_رﻥ‬zr‫اع و‬i‫ا ﻥ‬ lšm‹‫ ﻥ‬lm¯_ub‫ ا‬la‫‡ ﺱ‬meu¥b‫ ‚| ا‬Šm‫آ‬x‹b‫ی‡ وا‬iŒ‹b‫• ا‬m‫‡ ﺡ‬r lz”aub‫را ا‬ij‚ |‚ ‫رى‬£s xm“{ ‫وث‬€‫ ﺡ‬l‫راﺱ‬€b‫ أو¯~• ا‬€zb‫و‬ ‫ا‬£……b‫ و‬._ً…ti‫‡ ﻥ‬m…eu‫ وﺥ‬€……‫ واﺡ‬l……—_uk‫ أرﺏ‬€……z‚ |……‚ x……m“‹b‫ا ا‬£……‫ ه‬o……Œk‫ وإﻥ‬،€—_……eb‫ ا‬x……‫_ﺹ‬kub‫™……_ف ا‬šb‫ وا‬l……‫روﺱ‬€r x……m“b‫ ا‬lm‫……_ﻥ‬e‫ﻥ‬w‫_ت ا‬²_……†ajb |‚ ‫ر‬i‫ه‬€‹b‫¡ ا‬fib |—_f‫ و‬œ‫ی‬x‫_ء آ~´ ﺱ‬am‫_ل ﺱ‬u†‫ ﺏ‬ltia‹ub‫¦_ت ا‬m`b‫ ا‬dµ{ ‫را‬ij™jb ‫|ء‬sžub‫‡ ا‬r ‫د‬€t ‫ورة إﻥ†_ء‬xµ‫ ﺏ‬l‫راﺱ‬€b‫أوﺹ• ا‬ .lz”aujb ¶muub‫| ا‬sibim`b‫ع ا‬ia‹b‫| ا‬jt ‫~™_ظ‬jb ‫_ل‬šub‫ ا‬œ‫ن واﺱ‬i‫ˆ ﺹ‬r_‫ﻥ‬x`‫_م ﺏ‬mzb‫را وا‬ij™b‫ا‬ 26