Distribution patterns of Convolvulaceae in Iran: priorities for conservation

Document Type: Research Paper


1 MSc Student, Department of Plant Sciences and Biotechnology, Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, GC, Tehran, Iran

2 Assistant Prof., Department of Plant Sciences and Biotechnology, Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, GC, Tehran, Iran


Assessing priorities is the most important action in conservation programs. Rudimentary, mapping of diversity, and distribution patterns have been used to set priorities on diverse scales. The distribution patterns of plant taxa, largely reflect an actual ecological niche. Convolvulaceae s.str exhibits cosmopolitan dispersal of diverse life forms and includes 50–60 genera comprising 1600–1700 species including valuable ornamental, medicinal and food crops as well as weedy taxa. Little attention has been paid to the patterns and diversity centers of this family in scale of Iran and Asia. The present study, explains in as much detail as possible distribution patterns and the priorities for conservation of Convolvulaceae in the context of species and habitats in Iran. Threatened species of Iranian Convolvulaceae include 20.4% distributed in the Irano-Turanian phytochorion as a priority region for conservation planning. Moreover, this family represents the highest richness in the Alborz and central Zagros mountains of Iran. A meaningful proportion of priority taxa and habitats are located in protected areas of Iran. Regardless, some face several threatening factors (e.g. land use change, deforestation, and overgrazing) outside protected areas; therefore, emergent conservation actions (in situ and ex situ methods) appear necessary to protect these taxa.


Article Title [Persian]

الگوی پراکنش تیره پیچک در ایران: الویت‌های حفاظتی

Authors [Persian]

  • صدف صیادی 1
  • احمدرضا محرابیان 2
1 دانشجوی کارشناسی ارشد دانشکده علوم و فناوری زیستی، دانشگاه شهید بهشتی، تهران، ایران
2 استادیار دانشکده علوم و فناوری زیستی، دانشگاه شهید بهشتی، صندوق پستی 1983969411، تهران، ایران
Abstract [Persian]

ارزیابی الویت‌ها مهم‌ترین اقدام در برنامه‌های حفاظتی محسوب می‌شود. تهیه نقشه تنوع و الگوهای انتشار به صورت متداولی در پایه‌ریزی الویت‌ها در مقیاس‌های متنوع به کار گرفته شده است. تیره پیچک در مفهوم محدود شده نمایانگر یک الگوی انتشار جهان‌وطن متشکل از اشکال متنوع زیستی و مشتمل بر 50-60 جنس از 1700-1600 گونه می‌باشند. تا کنون، مراکز تنوع و انتشار این تیره در مقیاس ایران و آسیا کمتر مورد توجه قرار گرفته است. این مطالعه بیانگر دقیق الگوهای انتشار و الویت‌های حفاظتی در قالب زیستگاهی و گونه‌ای در تیره مذکور در کشور می‌باشد. گونه‌های در معرض تهدید این تیره در ایران 4/20 درصد می‌باشد که غالبا در مناطق ایرانو-تورانی اکوسیستم البرز و زاگرس انتشار یافته‌اند. این در حالی است که بیش‌ترین تنوع تیره مورد نظر نیز در این مناطق استقرار یافته است. به علاوه، تعداد زیادی از آرایه‌ها در محدوده مناطق تحت حفاظت قرار می‌گیرند. علی‌رغم این، در خارج از مناطق حفاظت شده با چالش‌های متعددی چون تغییرات کاربری اراضی، پاک‌تراشی جنگل و چرای بی‌رویه در زیستگاه‌هایشان مواجه هستند. بنابراین، اقدامات حفاظتی سریع (مشتمل بر حفاظت داخل و خارج از زیستگاه) جهت حفاظت از آن‌ها بسیار ضروری به نظر می‌رسد.

Keywords [Persian]

  • جغرافیای گیاهی
  • غنای گونه‌ای
  • گونه‌های نادر
  • مدیریت حفاظتی
  • نقشه انتشار
Afshar, A. 1979. Stratigraphy, tectonic and petroleum geology of Kopet-Dagh region, northeast Iran: Doctoral College of Science and Technology. University of London, England, 316 pp.

Aghanabati, A. 1998. Jurassic stratigraphy of Iran. Vol. 1. Geological Survey of Iran, Tehran.

Agard, P., Omrani, J., Jolivet, L. & Mouthereau, F. 2005. Convergence history across Zagros, Iran; constraints from coalitional and earlier deformation: International Journal of Earth Sciences 94: 401–419.

Aitken, M., Roberst, D.W. & Schultz, L.M. 2007. Modeling distributions of rare plants in the Great Basin, Western North America: Western North American Naturalist 67: 26–38.

Akhani, H. 1998. Plant Biodiversity of Golestan National Park, Iran. Stapfia 53: 1–411.

Akhani, H. 2006. Flora Iranica: facts and figures and a list of publications by K.H. Rechinger on Iran and adjacent areas. Rostaniha 7(Suppl. 2): 19–61.

Alavi, N.M. 1994. Tectonic of the Zagros, orogenic belt of Iran, new data and interpretation. Tectonophysics 299: 211–238.

Alejandra Jaramillo, M. & Paul, S. 2001. Phylogeny and patterns of floral diversity in the genus Piper (Piperaceae): American Journal of Botany 88(4): 706–716.

Anderson, S. 1994. Area and endemism. Quartery Review of Biology 69: 451–471.

Andrew, R., Marshall Philip, J., Platts, R., Gereau, E., Kindeketa, W., Kang’ethe, S. & Marchant, R. 2012. The genus Acacia (Fabaceae) in East Africa: Distribution, diversity and the protected area network. Plant Ecology and Evolution 145(3): 289–301.

Arponen, A., Heikkinen, R., Thomas, C. & Moilanen, A. 2005. The value of biodiversity in reserve selection: representation, species weighting, and benefit functions. Conservation Biology 19(6): 2009–2014.

Austin, D.F. 1992. Rare Convolvulaceae in the Southwestern United States. Annals of the Missouri Botanical Garden. 78(1):8–16.

Austin, D.F. & Bianchini, R.S. 1998. Additions and corrections in American Ipomoea (Convolvulaceae). Taxon 47: 833.

Austin, D.F. 1998. Parallel and convergent evolution in the Convolvulaceae. Pp. 201–234. In: Mathews, P. & Sivadasan, M. (eds). Biodiversity and Taxonomy of Tropical Flowering Plants, Calicut: Mentor Books.

Austin, D.F. 2006. Noteworthy distributions and additions in Southwestern Convolvulaceae. Canotia 2(3): 79–106. Linnaeus, C. 1753. Species plantarum (ed. 1). Salvius, Stockholm, 1–1200.

Barthlott, W., Lauer, W. & Placke, A. 1996. Global distribution of species diversity in vascular plants: Towards a world map of phytodiversity. Erdkunde50: 317–328.

Barthlott, W., Hostert, A., Kier, G., Kuper, W., Kreft, H., Mutke, J., Rafiqpoor, M.D. & Sommer, J.H. 2007. Geographic patterns of vascular plant diversity at continental to global scales. Erdkunde 61:

Berberian, M. & King, G.C.P. 1981. Towards a paleogeography and tectonic evolution of Iran. Canadian Journal of Earth Sciences 18(2): 210–265.

Bibby, C.J., Collar, N.J., Crosby, M.J., Heath, M.F., Imboden, C., Johnson, T.H., Long, A.J., Stattersfield, A.J. & Thirgood, S.L. 1992. Putting Biodiversity on the Map: Priority Areas for a Global Conservation. ICBP, Cambridge.

Bottrill, M.C., Joseph, L.N., Carwardine, J., Bode, M., Cook, C., Walker, S., Wilson, K.A. & Possingham, H.P. 2008. Is conservation triage just smart decision making?. Trends in Ecology & Evolution 23(12): 649–654. doi:10.1016/j.tree.2008.07.007.

Boissier, E. 1879. Flora Orientalis sive enumeratio plantarum in Oriente a Graecia et Aegypto and Indiae fines hucusque observatarum. IV: Coroliflorae et Monochlamydeae. Geneva: H. Gorge.

Bovell-Benjamin, A.C. 2007. Sweet Potato: A review of its past, present, and future role in human nutrition. Advances in Food and Nutrition Research 52: 1–59.

Braun, G., Mutke, J., Reder, A. & Barthlott, W. 2002. Biotope patterns, phytodiversity and forestline in the Andes, Based on GIS and Remote Sensing Data. Pp. 75–89. In: Körner, C. & Spehn, E.M. (eds). Mountain Biodiversity: a Global Assessment. Parthenon Publishing, London.

Breckle, S.W. 2002. Walter’s vegetation of the earth. The ecological systems of the geobiosphere. Springer, Heidelberg, p. 527.

Brown J.M., Brummitt R.K., Spencer, M. & Carine, M.A. 2009. Disentangling the bindweeds: hybridization and taxonomic diversity in Calystegia R.Br. Botanical Journal of the Linnean Society 160: 388–401. doi: 10.1111/j.1095-8339.2009.00987.

Brummitt, R.K. 1972. Calystegia. Pp. 78–79. In: Tutin, T.G., Heywood, V.H., Burgess, N.A., Moore, D.M., Valentine, D.H., Walters, S.M. & Webb, D.A. (eds). Flora Europaea Vol. 3: Diapensiaceae to Myoporaceae. Cambridge University Press, Cambridge.

Brummitt, N. & Lughadha, E.N. 2003. Biodiversity where is hot and where is not hot. Conservation Biology 17: 1442–1448.

Buchman, A.S., Leurgans, S.E., Boyle, P.A., Schneide, R.J.A., Arnold, S.E. & Bennett, D.A. 2011. Combinations of Motor Measures More Strongly Predict Adverse Health Outcomes in Old Age: The Rush Memory and Aging Project, a Community-Based Cohort Study, BMC Medicine, 9: 42.

Cao, J.J., S.C. Lee, S.C., Zhang, X.Y., Chow, J.C., An, Z.S., Ho, K.F., Watson, J.G., Fung, K., Wang, Y.Q. & Shen, Z.X. 2005. Characterization of airborne carbonate over a site near Asian dust source regions during spring 2002 and its climatic and environmental significance. Journal of Geophysical Research 110. D03203, doi:10.1029/2004JD005244.

Clements, F.E. 1905. Research methods in ecology. University Publishing Company, Lincoln, NE.

Cronquist, A. 1988. The Evolution and Classification of Flowering Plants(2nd ed.). Bronx, New York, USA: The New York Botanical Garden.

Davis, S.D., Heywood, V.H. & Hamilton, A.C. 1994. Centres of Plant Diversity. A guide and strategy for their conservation. Vol. 1. Europe, Africa, South West Asia and the Middle East.

Davis, S., Heywood, V.H. & Hamilton, A.C. 1994–1997. Worldwide Fund for Nature and International Union for Conservation of Nature and Natural Resources, Centers of Plant Diversity (Gland, Switzerland).

Davis, P.H. 1978. Flora of Turkey 6. Edinburgh: Edinburgh University Press.

Delisle, F., Lavoie, C., Jean, M. & Lachance, D. 2003. Reconstructing the spread of invasive plants: taking into account biases associated with herbarium specimens. Journal of Biogeography 30: 1033–1042.

Dieckmann, M. 2003. Species indicator values as an important tool in applied plant ecology a review. Basic and Applied Ecology 4: 493–506.

Diaz, S. & Cabido, M. 1997. Plant functional types and ecosystem fubction in relation to global change. Journal of Vegetation Sciences 8(4): 463–474.

DiTomaso, J. 2000. Invasive weeds in rangelands: Species, impacts, and management. Weed Science. Published and copyrighted by: Weed Science Society of America 48(2): 255–265.

Djamali, M., Akhani, H., Khoshravesh, R., Anderieu-Ponel, P. & Brewer, S. 2011. Application of the global bioclimatic classification to Iran: implications for understanding the modern vegetation and biogeography. Ecologia Mediterranea 37(1): 91–114.

Dobson, A.P., Rodriguez, J.P., Roberts, W.M. & Wilcove, D.S. 1998. Geographic distribution of endangered species in the United States. Reid, W.V. Biodiversity hotspots. Trends in Ecology & Evolution 13: 275–280.

ESRI. 2000. ArcView Gis Ver. 3.2a. Environmental Systems Research Institute Inc., California.

Faith, D.P. & Walker, P.A. 1996. Environmental diversity: on the best-possible use of surrogate data for assessing the relative biodiversity of sets of areas. Biodiversity and Conservation 5: 399–415.

Fisher, W.B. 1968. Physical Geography. In: Fisher, W.B. (ed.). The Cambridge History of Iran, Cambridge University Press 1: 3–110.

Ferrer-Castán, D. & Vetaas, O.R. 2003. Floristic variation, chorological types and diversity: do they correspond at broad and local scales? Diversity and Distributions 9: 221–235.

Fuentes, N., Sa´nchez, P., Esquivel, J. & Marticorena, A. 2012. A new comprehensive database of alien plant species in Chile based on herbarium records. Biological Invasions 15(4): 847–858.

Foin, T.C., Riley, S.P.D., Pawley, A.L., Ayres, D.R., Carlsen, T.M., Hodum, P.J. & Switzer, P.V. 1998. Improving recovery planning for threatened and endangered species: comparative analysis of recovery plans can contribute to more effective recovery planning. BioScience 48 (3): 177–184.

Ghorbani, M. 2013. The economic geology of Iran. Springer. 581 pp.

Groom, M.J., Meffe, G.K. & Carroll, C.R. 2006. Principles of Conservation Biology. Third edition. Sinauer Associated, Sunderland.

Grigoriev, C. 1953. Convolvulaceae. Pp. 1–37. In: Shishkin, B.K. et al. (eds). Flora USSR, Vol. 19: Tubiflorae. USSR Scientific Academy, Moscow and Leningrad.

Hansen, A.J. & DiCastri, F. 1992. Landscape boundaries: consequences for biotic diversity and ecological flows. Ecological Studies 92. Springer-Verlag, New York.

Hanley, G.P., Heal, N.A., Tiger, J.H. & Ingvarsson, E.T. 2007. Evaluation of a classwide teaching program for developing preschool life skills. Journal of Applied Behavior Analysis 40(2): 277–300. doi:10.1901/jaba.2007.57-06.

Hawkins, B.A., Field, R. & Cornell, H.V. 2003. Energy, water, and broad scale geographic patterns of species richness. Ecology 84: 3105–3117.

Hedge, C. & Wendelbo, P. 1978. Patterns of distributions and endemism in Iran. Notes from the Royal Botanical Garden 36: 441–464.

Hernández, H.M. & Navarro, M. 2007. A new method to estimate areas of occupancy using herbarium data. Biodiversity and Conservation 16: 2457–2470.

Heiser, C.B. 1969. Nightshades, the paradoxical plants. San Francisco: Freeman & Company. 200 pp.

Hill, M.P. & Hulley, P.E. 2000. Aspects of the phenology and ecology of the South American weed, Solanum sisymbriifolium, in the Eastern Cape province of South Africa. African Plant Protection 6(2): 53–59.

Hilty, J.A., Lidicker, W.A. & Merenlender, M. 2006. Corridor Ecology: The Science and Practice
of Linking Landscapes for Biodiversity Conservation. Island Press, Washington.

Hernandez-Stefanoni, J.L. 2006. The role of landscape patterns of habitat types on plant species diversity of a tropical forest in Mexico. Biodiversity and Conservation 15: 1441–1457.

Heywood, V.H. & Dulloo, M.E. 2005. In situ conservation of wild plant species: a critical global review of best practices. IPGRI Technical Bulletin 11. IPGRI, Rome, Italy.

Homke, S. 2007. Timing of Shortening and Uplift of the Pusht-E Kuh arc in the Zagros Fold-and- Thrust belt (IRAN). A Combiend Magnetostratigraphy and Apatite Thermochronology Analysis, Universidad de Barcelona Facultad de Geología , Departamento de Geodinámicay Geofísica.

IUCN. 2011. Guidelines for appropriate uses of IUCN Red List Data. Incorporating the Guidelines for Reporting on Proportion Threatened and the Guidelines on Scientific Collecting of Threatened Species. Version 2. Adopted by the IUCN Red List Committee and IUCN. SSC Steering Committee. 78 pp.

IUCN Standards and Petitions Subcommittee. 2011. Guidelines for Using the IUCN Red List Categories and Criteria. Version 9.0. Prepared by the Standards and Petitions Subcommittee.

Jalili, A. & Jamzad, Z. 1999. The Red data book of Iran. Research Institute of Forests and Rangelands, 748, Tehran.

Jedicke, E. 2001. Biodiversität, Geodiversität, Ökodiversität. Kriterien zur Analyse der Landschaftsstruktur-ein konzeptioneller Diskussionsbeitrag. Naturschutz und Landschaftsplanung 33: 59–68.

Jetz, W., Rahbek, C. & Colwell, R.K. 2004. The coincidence of rarity and richness and the potential signature of history in centres of endemism. Ecology Letters 7: 1180–1191.

Johnson, K.T.M. 1998. Experimental determination of partition coefficients for rare earth and high-field-strength elements between clinopyroxene, garnet, and basaltic melt at high pressures. Contributions to Mineralogy and Petrology 133(1–2): 60–68.

Kala, C.P. 2005. Indigenous uses, population density, and conservation of threatened medicinal plants in protected areas of the Indian Himalayas: Conservation Biology 19: 368–378.

Kandari, L.S., Rao, K.S., Maikhuri, K., Kharkwal, G., Chauhan, K. & Kala, C.P. 2011. Distribution pattern and conservation of threatened medicinal and aromatic plants of Central Himalaya, India: Journal of Forestry Research 22(3): 403.

Kapos, V., Rhind, J., Edwards, M., Price, M.F. & Ravilious, C. 2000. Developing a map of the world’s mountain forests. In: Price, M.F. & Butt, N. (eds). Forests in sustainable mountain development: A state-of-knowledge report for 2000. CAB International, Wallingford: 4–9.

Kreft, H. & Jetz, J. 2007. Global patterns and determinants of vascular plant diversity. PNAS 104(14): 5925–5930.

Kurbanov, D. 1994. Flora of Kopetdagh. Pp. 105–128. In: Fet, V. & Atamuradov, K.I (eds). Biogeography and Ecology of Turkmenistan. Kluwer Academic Publishers, Dordrecht.

Lavoie, C. 2013. Biological collections in an ever changing world: Herbaria as tools for biogeographical and environmental studies. Perspectives in Plant Ecology. Evolution and Systematics 15: 68–76.

Leslie Dowe, J. 2010. Biogeography, Ecology and Systematic Csiro. Scientific and Industrial Research Organisation.

Léonard, J. 1981–1989. à l’étude de la flore et de la végétation des déserts d’Iran: étude des aires de distribution les phytochories, les chorotypes. Fascicules 1–9. Meise, Jardin Botanique National de Belgique.

Linder, H.P. 2001. Plant diversity and endemism in sub-Saharan tropical Africa. Journal of Biogeography 28: 169–182.

Lovett, J.R., Rudd, S., Taplin, J. & Frimodt-Moller, C. 2000. Patterns of plant diversity in Africa south of the Sahara and their implications for conservation management. Biodiversity and Conservation 9: 37–46.

Mabberley, D.J. 1987. The Plant-book. Cambridge. Cambridge University Press.

MacArthur, R.H. 1972. Geographical Ecology. New York: Harper & Row.

Mack, R.N., Simberloff, D., Lonsdale, W.M., Evans, H., Clout, M. & Bazzaz, F.A. 2000. Biotic invasions: causes, epidemiology, global consequences and control. Ecological Society of America 10:

Malalavidhane, T.S., Wickramasinghe, S.M. & Jansz, E.R. 2000. Oral hypoglycaemic activity of Ipomoea aquatica. Journal of Ethnopharmacology 72: 293–298.

Matthies, A., Rajagopalan, K.V., Mendel, R.R. & Leimkuhler, S. 2004. Evidence for the physiological role of a rhodanese-like protein for the biosynthesis of the molybdenum cofactor in humans. Proceedings of National Academy of Science 101: 5946–5951.

Mandaville, J.P. 1990. Flora of eastern Saudi Arabia. Kegan Paul International Ltd., London and New York, with National Commision for Wildlife Conservation and Development, Riyadh, 1–482.

McNaughton, S.J. 1994. Conservation goals and the configuration of biodiversity. In: Forey, P.L., Humphries, C.J. & Vane-Wright, R.I. (eds). Systematics and conservation evaluation, the systematic association (special issue), Vol. 50. Clarendon Press, Oxford.

Meusel, H., Jäger, E., Rauschert, S. & Weinert, E. 1978. Vergleichend Chrologie der zentrleuropalschhen Flora-Kareten, Band II. Gustav Fischer Verlag. Jena.

Mehrabian, A.R., Sheidai, M., Noormohammad, Z., Mozaffarian, V. & Asri, Y. 2012. Interpopulations diversity in Onosma microcarpa (Boraginaceae): Morphological and molecular (ISSR) approach. Science Medical 3(3): 187–198.

Michael, J. & Hopkins, G. 2007. Modeling the known and unknown plant: biodiversity of the Amazon Basin, Journal of Biogeography 34: 1400–1411.

Miller Mittermeier, R.A., Myers, N., Thomsen, J.B. & da Fonseca, G.A.B. 1998. Biodiversity hotspots and major tropical wilderness areas: approaches to setting conservation priorities. Conservation Biology 12: 516–520.

Mittermeier, R.A., Myers, N., Gil, P.R. & Mittermeier, C.G. 1999. Hotspots: Earth's Biologically Richest and Most Endangered Terrestrial Ecoregions (CEMEX, Conservation International and Agrupacion Sierra Madre, Monterrey, Mexico.

Mittermeier, R.A., Gil, P.R., Hoffman, M., Pilgrim, J., Brooks, T., Mittermeier, C.G., Lamoreux, J. & da Fonseca, G.A.B. 2005. Hotspots revisited: Earth’s Biologically Richest and Most Endangered Ecoregions. Conservation International (CI). Washington DC.

Mostafavi, H., Kiabi, B., Abdoli, A., Mehrabian, A.R., Mahini, A.R., Kami, H. & Naqinezhad, A.R. 2006. Biodiversity of Mond Protected Area. Shahid Beheshti University Publishing, 254 pp.

Mozaffarian, V. 1378. Flora Khuzestan: Markaz-e Tahghighat-e Manabe Tabiee va Dam-e Khuzestan, 670 pp. (In Persian).

Mozaffarian, V. 1379. Flora of Yazd: Moasese-ye Entesharat-e Yazd, 636 pp. (In Persian).

Mozaffarian, V. 2010. Three new species and two species records from Iran, Ilam province. Iranian Journal of Botany 16: 204–212.

Myers, N., Mittermeier, R.A., Mittermeier, C.G. & da Fonseca, G.A.B. 2000. Biodiversity hotspots for conservation priorities, Nature 403.

Nabavi, M. 1978. An Introduction to Geology of Iran. Geological Survey of Iran, Tehran.

Negi, H.R. & Gadgil, M. 2002. Cross-taxon surrogacy of biodiversity in the Indian Garhwal Himalaya. Biological Conservation 105: 143–155.

Niels, R., Marco, C., Roos, J.W., Ferry, S.E. & Loon, E. 2009. Botanical richness and endemic patterns of Borneo derived from species distribution models. Ecography 32: 180–192.

Noroozi, J., Akhani, H. & Breckles, S.W. 2008. Biodiversity & phytogeography of alpine flora of Iran. Biodiversity and Conservation 17(2): 493–521.

Norouzi, M. 2001. Convolvulaceae Juss. In: Assadi et al. (eds). Flora of Iran. Vol. 40. Research Institute of Forests and Rangelands, Tehran, Iran (In Persian).

Olmstead, R.G. 2013. Phylogeny and biogeography in Solanaceae, Verbenaceae, and Bignoniaceae: a comparison of continental and intercontinental diversification patterns. Botanical Journal of Linnean Society 171: 80–102.

Prasad, K.N., Divakar, S., Shivamurthy, G.R. & Aradhya, S.M. 2005. Isolation of a free radical-scavenging antioxidant from water spinach (Ipomoea aquatica Forsk). Journal of Food and Agriculture organization 85: 1461–1468.

Pedrotti, F. 2013. Plant and vegetation mapping. Springer, Heidelberg.

Petrus, C. & Cunninghamia, H. 1998. Some New South Wales coastal plant distributions: a comparison of herbarium records with transect survey data. Vol. 5(3): 645–664.

Prendergast, J.R., Quinn, R.M., Lawton, J.H., Eversham, B.C. & Gib-bons, D.W. 1993. Rare species, the coincidence of diversity hotspots and conservation strategies. Nature 365: 335–337.

Priscilla, H.C. & Bruce, W. 2009. Can herbarium records be used to map alien species invasion and native species expansion over the past 100 years? Journal of Biogeography 36: 651–661.

Rabinowitz, D. 1981. Biological Aspects of Rare Plant Conservation. Wiley, New York, pp. 205−217.

Raunkaier, C. 1905. Types biologiques pour la géographie botanique. Oversigt over Det Forhandlinger: 347–438.

Raunkaier, C. 1908. Livsformernes Statistik som Grundlag for biologisk Plantegeografi. Botanisk Tidsskrift 29: 42–43.

Raunkaier, C. 1934. The life forms of plants and statistical plant geography. Clarendon Press, Oxford, 632 pp.

Raven, P.H. & Axelrod, D.I. 1974. Angiosperm biogeography and past continental movements. Annals of Missouri Botany Garden 61: 39–637.

Rechinger, K.H. 1963. Flora Iranica, Akademische Druck-U. Verlagsanstalt. Graz. Vol. 1.

Rechinger, K.H. 1989. Fifty years of botanical research in the Flora Iranica Area (1937–1987). In: Tan, K. (ed.). Plant taxonomy, phytogeography and related subjects.The Davis & Hedge Festschrift, Edinburgh, pp. 301–349.

Regens, N. 1997. Floristic biodiversity and history of African arid regions. Biodiversity and Conservation 6: 495–514.

Reveal, J.L. 1981. The concept of rarity and population threats in plant communities. Rare plant conservation, ed. Morse, L.E. & Henefin, M.S. Bronx: New York Botanical Garden, pp. 41–46.

Riedl, H. 1968. Boraginaceae. In: Rechinger, K.H. (ed.). Flora Iranica 48. Akademische Druck-u. Verlagsanstalt.- Graz: Austria.

Risser, P.G. 1995. The status of the science of examining ecotones. Bioscience 45(5): 318–325.

Rivas-Martínez, S., Sánchez-Mata, D. & Costa, M. 1997. Syntaxonomical synopsis of the potential natural plant communities of North America I. Itinera Geobotanica 10: 5–148.

Sa’ad,  F. 1967. The Convolvulus species of the Canary Islands, the Mediterranean region and the near and Middle East. Medelingen van het Botanisch Museum en Herbarium van de Rijks universities Utrecht, 281: 1–288.

Sarasan, V., Cripps, R., Ramsay, M.M., Atherton, C., McMichen, M., Prendergast, G. & Rowntree, J.K. 2006. Conservation in vitro of threatened plants-progress in the past decade. In Vitro Cellular Developmental Biology 42(3): 206–214.

Santi, E., Maccherini, S., Rocchini, D., Bonini, I., Brunialti, G., Favilli, L., Perini, C., Pezzo, F., Piazzini, S., Rota, E., Salerni, E., Chiarucci, A. & Sarfatti, G. 2010. Simple to sampl e: Vascular plants as surrogate group in a nature reserve: Journal for Nature Conservation 18: 2–11.

Sankaran, M. 2009. Diversity patterns in Savanna grassland communities: implications for conservation strategies in a biodiversity hotspot Mahesh Biodiversity Conservation 18: 1099–1115.

Selvi, F. 1997. Rare plants on mount Aiata, Italy: vulnerability to extinction on an ecological ‘‘Island’’. Biology Conservation 81: 257–266.

Schery, R.W. 1951. Plants for Man, Prentice Hall, Adapted from Vavilov Englewood Cliffs, NJ, 1972.

Schmidt, M., Kreft, H., Thiombiano, A. & Zizka, G. 2005. Herbarium collections and field data-based plant diversity maps for Burkina Faso. Diversity and Distributions 11: 509–516.

Schonbeck-Temesy, E. 1972. Solanaceae. In: Rechinger, K.H. (ed.). Flora Iranica, Vol. 100. Akademische Druck-u. Verlagsanstalt, Graz, Austria.

Schulman, L., Toivonen, T. & Ruokolainen, K. 2007. Analyzing botanical collecting effort in Amazonia and correcting for it in species range estimation. Journal of Biogeography 34(8): 1388–1399.

Shakur, A., Roshan, Gh., Najafe, R. & Kanei, A. 2010. Evaluating climatic potential for palm cultivation in Iran with emphasize on degree-day index, African Journal of Agricultural Research 13: 99–118.

Simpson, M.G. 2007. Plant systematics, Elsevier Academic Press. 603 pp.

Singh, B. 1981. Establishment of First Gene Sanctuary in India for Citrus in Garo Hills. Concept Publishing, New Delhi, India.

Solymos, P. & Feher, Z. 2005. Conservation prioritization based on distribution of land snails in Hungary. Conservation Biology 19(4): 1084–1094.

Spooner, D.M. & Hijmans, R.J. 2001. Potato systematics and germplasm collecting. American Journal of Potato Research 78: 237–268.

Stattersfield, A.J., Crosby, M.J., Long, A.J. & Wege, D.C. 1998. Endemic bird areas of the world. Birdlife International, Cambridge.

Stocklin, J. 1974. Northern Iran: Alborz Mountains. In: Spencer, A.M. (ed.). Mesozoic-Cenozoic belts data for orogenic studies; Alpine-Himalayan Orogens: Geological Society of London (special publication) 4: 212–234.

Svhmidt, M., Kreft, H., Thiombiano, A. & Zizka, G. 2005. Herbarium collections and field data-based plant diversity maps for Burkina Faso. Diversity and Distribution 11: 509–516.

Takin, M. 1972. Iranian geology and continental drift in the Middle East: Nature 235: 147–150.

Thiers, B.M. 2008. Continuously updated: Index Herbariorum.

Tilman, D. 1999. The ecological consequences of changes in biodiversity: a search for general principles. Ecology 80: 1455–1474.

Toledo, J.A., Kaminski, J., Santanna, M.A. & Santos, D.R., 2012. Tampão Santa Maria (TSM) como alternativa ao tampão SMP para medição da acidez potencial de solos ácidos. Revista Brasileira de Ciência do Solo 36: 427–435.

Ushimaru, A. & Kikuzawa, K. 1999. Variation of breeding dystem, floral rewards, and reproductive success in clonal Calystegia species (Convolvulaceae). American Journal of Botany 86(3): 436–446.

Ushimaru, A. & Kikuzawa, K. 1999. Variation in breeding system, floral rewards, and reproductive success in clonal Calystegia species (Convolvulaceae). American Journal of Botany 86: 436–446.

Vega, I.L., Ayala, O.N.N. & Conteras-Medina, R.L. 2004. Patterns of diversity, endemism and conservation: an example with Mexican species of Ternstroemiaceae Mirb. ex DC. (Tricolpates: Ericales). Biodiversity and Conservation 13: 2723–2739.

Wagnetiz, G. 1986. Centaurea in South-West Asia: Patterns of distribution and diversity. Proceedings of the Royal Society of Edinburgh. Sect. B. Biological Sciences, 89B: 11–21.


Wood, S., Nolte, S., Burridge, M., Rudloff, D. & Green, W. 2015. ‘Dimensions and location of high-involvement management: fresh evidence from the UK Commission’s 2011. Employer Skills Survey’. Human Resource Management Journal 25: 2: 166–183.

Zohary, M. 1973. Geobotanical foundations of the Middle East. 2 Vols. Stuttgart. 739 pp.