More information:

Bornman, C.H., Elsworthy, J.A., Butler, V. and Botha, C.E.J. 1970. Welwitschia mirabilis: observations on general habit, seed, seedling, and leaf characteristics. Madoqua, 2(1): 53-66


Description:

Welwitschia mirabilis: observations on general habit, seed, seedling, and leaf characteristics.

Summary / Notes:

Welwitschia mirabilis, of the order Gnetales, cIass Gymnospermae, is a rare and strikingly bizarre plant. It is geographically restricted along the south-west coast of Africa to a narrow margin of the Namib, one of the world's most extreme deserts. The only species in the genus, Welwitschia survives in very severe locaIities where the annual rainfall is often less than 25 mm and where, in terms of precipitation, the coastal fog is equivalent to about a further 50 mm. Keywords: Acetamide-like odour, Aspergillus niger, Bilateral symmetry of leave, Cotyledons, Dioecious plant, Epidermal cells, Germination, Growth habit, Massive sclereid, Megastrobilus, Membranous plates, Metabolic activity, Probergrothius sexpunetatis insect and Seedlings raised.

Year: 1970

Type: Journal Article

Download: Welwitschia mirabilis_observations on general habit_seed_seedling_and leaf characteristics.pdf (2.42 mb)

Preview: Preview this file


Top 50 related results:

You may also be interested in the following items which are on a similar or related topic, listed in order of similarity.

Results per page:

Results: 1 to 50 of 50

To FILTER: Use the pale green row to filter the results on this page. Type in text or select from the year list.

Rows matching filter(s): All
What is this row? 
Data titleYearOriginFile typeDownloadkml/kmz
Van Jaarsveld, E. 2008. Desert grapes: an expedition to the remote reaches of the southern Namib: Namib flora. Veld and Flora, 94(2): 82-86
  » More info & related results
2008 Journal Article
Schulze, E-D. and Schulze, I. 1976. Distribution and control of photosynthetic pathways in plants growing in the Namib Desert, with special regard to Welwitschia mirabilis Hook.fil. Madoqua, 9(3): 5-13
  » More info & related results
1976 Journal Article2.49 mb pdf
Preview
Simmons, R.E., Cordes, I. and Braby, R. 1998. Latitudinal trends, population size, and habitat preferences of the Damara Tern Sterna balaenarum on Namibia's desert coast. Ibis, 140(3): 439-445
  » More info & related results
1998Bibliography compiled by Bird Database ProjectJournal Article
Whitaker, C., Pammenter, N.W., and Berjak, P. 2008. Infection of the cones and seeds of Welwitschia mirabilis by Aspergillus niger var. phoenicis in the Namib-Naukluft Park. South African Journal of Botany, 74(1): 41–50
  » More info & related results
2008 Journal Article
Skeleton Coast Park - Profile
  » More info & related results
Ministry of Environment and TourismBook, Book Section, Booklet135 kb pdf
Preview
Roth-Nebelsick, A., Ebner, M., Miranda, T., Gottschalk, V., Voigt, D., Gorb, S., Stegmaier, T., Sarsour, J., Linke, M. and Konrad, W. 2012. Leaf surface structures enable the endemic Namib desert grass Stipagrostis sabulicola to irrigate itself with fog water. Journal of the Royal Society Interface, published online 22 February 2012
  » More info & related results
2012 Journal Article1.21 mb pdf
Preview
Williamson, G. 1997. Preliminary account of the floristic zones of the Sperregebiet (Protected Diamond Area) in southwest Namibia. Dinteria, 25: 1-68
  » More info & related results
1997Namibia Scientific SocietyJournal Article5.17 mb pdf
Preview
Walter, H. and Breckle, S-W. 1986. The Namib Fog Desert in Southern Africa. Ecological Systems of the Geobiosphere, 1986: 274-315
  » More info & related results
1986 Journal Article570 kb pdf
Preview
von Willert, D.J. 1994. Welwitschia mirabilis Hook. fil. — das Überlebenswunder der Namibwüste. Naturwissenschaften, 81(10): 430-442
  » More info & related results
1994 Journal Article
Eckardt, F.D. and Schemenauer, R.S. 1998. Fog water chemistry in the Namib desert, Namibia. Atmospheric Environment, 32(14–15): 2595–2599
  » More info & related results
1998 Journal Article
Klopatek, J.M. and Stock, W.D. 1994. Partitioning of nutrients in Acanthosicyos horridus, a keystone endemic species in the Namib Desert. Journal of Arid Environments, 26(3): 233–240
  » More info & related results
1994 Journal Article
Diester-Haass, L., Heine, K., Rothe, P. and Schrader, H. 1988. Late Quaternary history of continental climate and the Benguela Current off South West Africa. Palaeogeography, Palaeoclimatology, Palaeoecology, 65(1–2): 81–91
  » More info & related results
1988 Journal Article
Liu, M., van Wyk, B-E. and Tilney, P.M. 2007. A revision of the genus Marlothiella (Apiaceae). South African Journal of Botany, 73(2): 208–213
  » More info & related results
2007 Journal Article
Ministry of Environment and Tourism. Sperrgebiet National Park - Wildlife wonders in the Sperrgebiet National Park
  » More info & related results
 Book, Book Section, Booklet703 kb pdf
Preview
Speer, K.G., Siedler, G. and Talley, L. 1995. The Namib Col Current. Deep Sea Research Part I: Oceanographic Research Papers, 42(11–12): 1933–1950
  » More info & related results
1995 Journal Article
Jacobson, N., Jacobson, P., van Jaarsveld, E. and Jacobson, K. 2014. Field evidence from Namibia does not support the designation of Angolan and Namibian subspecies of Welwitschia mirabilis Hook. Transactions of the Royal Society of South Africa, Published online: 28 Aug 2014
  » More info & related results
2014 Journal Article
Kramer, L.B., van der Bank, F.H. and Wink, M. 2016. Marcusenius desertus sp. nov. (Teleostei: Mormyridae), a mormyrid fish from the Namib desert. African Journal of Aquatic Science, DOI: 10.2989/16085914.2015.1137855
  » More info & related results
2016 Journal Article3.5 mb pdf
Preview
Shuuya, T., Berner, J., Krüger, G., Wassenaar, T. and Curtis, B. 2016. Understanding the spatial and temporal patterns of photosynthetic efficiency of Welwitschia mirabilis in the central Namib Desert. South African Journal of Botany, 103: 348–349
  » More info & related results
2016 Journal Article
Berner, J.M., Shuuya, T., Wassenaar, T. and Krüger, G.H.J. 2015. Spatial distribution in the photosynthetic efficiency of Welwitschia in the central Namib dessert. South African Journal of Botany, 98: 206
  » More info & related results
2015 Journal Article
Di Salvator, M., Carafa, A.M. and Carratù, G. 2016. Environmental requirements for germination of dispersion units of Welwitschia mirabilis Hook. fil. Journal of Arid Environments, 125: 116–121
  » More info & related results
2016 Journal Article
Steckel, J., Penrith, M.L., Henschel, J., Brandl, R. and Meyer, J. 2010. A preliminary molecular phylogeny of the Namib Desert darkling beetles (Tenebrionidae). African Zoology, 45: 107-114
  » More info & related results
2010 Journal Article
Kensley, B.F. 1976. The genus Nebalia in South and South West Africa (Crustacea, Leptostraca). Cimbebasia, 4(8): 155-162
  » More info & related results
1976 Journal Article4.33 mb pdf
Preview
Macko, S.A., Soderberg, K., Henschel, J., Billmark, K. and Swap, R.J. 2010. Linking fog water use by plants in the coastal Namib Desert to carbon and nitrogen cycles along aridity gradients. American Geophysical Union, Fall Meeting 2009, abstract #B51A-0291
  » More info & related results
2010 Report
Van Jaarsveld, E. 2009. Kleinduimpie grass: Dregeochloa pumila, the only succulent grass in the world: Namib desert flora. Veld and Flora, 95(1): 19-21
  » More info & related results
2009 Journal Article
Bornman, C.H., Botha, C.E.J. and Nash, L.J. 1973. Welwitschia mirabilis: observations on movement of water and assimilates under föhn and fog conditions. Madoqua, 2(2): 25-31
  » More info & related results
1973 Journal Article950 kb pdf
Preview
du Preez, D. 1996. Conservation priorities and management recommendations for the Erongo region coastal zone, Namibia. M.Sc. Degree, Department of Environmental and Geographical Science, University of Cape Town
  » More info & related results
1996 Thesis1.61 mb pdf
Preview
Bluck, B.J., Ward, J.D., Cartwright, J. and Swart, R. 2007. The Orange River, southern Africa: an extreme example of a wave-dominated sediment dispersal system in the South Atlantic Ocean. Journal of the Geological Society, 164: 341–351
  » More info & related results
2007 Journal Article715 kb pdf
Preview
Soderberg, K., Swap, R.J. and Macko, S. A. 2009. Fog-aerosol interactions in the coastal Namib Desert. American Geophysical Union, Fall Meeting 2009, abstract id. A51D-0138
  » More info & related results
2009 Report
Burke, A. 2004. From plains to inselbergs: species in special habitats as indicators for climate change? Journal of Biogeography, 31: 831-841
  » More info & related results
2004 Journal Article
Robertson, A., Jarvis, A., Mendelsohn, J. and Swart, R. 2012. Namibia's Coast: Figure 24 Bathymetry in: Namibia's Coast: Ocean Riches and Desert Treasures. Directorate of Environmental Affairs, Ministry of Environment and Tourism, Namibia
  » More info & related results
2012Data compiled for: Namibia's Coast ocean riches and desert treasuresShapefile166 kb zip
Kimura, K. 2005. Origin of the fog in Namib Desert in dry season. African Study Monographs, Supplement, 30: 57-64
  » More info & related results
2005DRFN DLIBJournal Article138 kb pdf
Preview
Henschel, J., Dausab, R., Moser, P. and Fallen, J. (eds.) 2004. !NARA - Fruit for development of the !Khuiseb Topnaar. Namibia Scientific Society, Windhoek
  » More info & related results
2004 Book, Book Section, Booklet
von Willert, D.J., Brinckmann, E., Scheitler, B. and Eller, B.M. 1983. Responses of Crassulacean Acid Metabolism (CAM) to Increasing and Decreasing Water Stress in Plants in the Southern Namib Desert. Advances in Agricultural Biotechnology, 3: 155-163
  » More info & related results
1983 Journal Article
Rosell-Melé. A., Martínez-Garcia, A. and McClymont, E.L. 2014. Persistent warmth across the Benguela upwelling system during the Pliocene epoch. Earth and Planetary Science Letters, 386: 10–20
  » More info & related results
2014 Journal Article
Lluch, J.R. and Garreta, A.G. 2001. Contribution to the seaweed flora of Namibia: new records of Chlorophyta and Phaeophyceae. Cryptogamie Algologie, 22(3): 297–304
  » More info & related results
2001 Journal Article
Fossing, H., Ferdelman, T.G. and Berg, P. 2000. Sulfate reduction and methane oxidation in continental margin sediments influenced by irrigation (South-East Atlantic off Namibia). Geochimica et Cosmochimica Acta, 64(5): 897–910
  » More info & related results
2000 Journal Article
Baumann, K-H. and Freitag, T. 2004. Pleistocene fluctuations in the northern Benguela Current system as revealed by coccolith assemblages. Marine Micropaleontology, 52(1–4): 195–215
  » More info & related results
2004 Journal Article
Lichtenthaler, H. 1998. Die Wurzel, das neue Organ, ihre Bedeutung fur das Leben von Welwitschia mirabilis und anderer Arten der Namib sowie von Arten angrenzender Gebiete. Kutschera, L., Lichtenegger, E., Sobotik, M., and Haas, D. (Eds.). Eigenverlag: Pflanzensoziologisches Institut, Klagenfurt, Austria (1997), 94 pp. Journal of Plant Physiology, 153(1–2): 264
  » More info & related results
1998 Journal Article
Arhan, M., Mercier, H. and Park, Y-H. 2003. On the deep water circulation of the eastern South Atlantic Ocean. Deep Sea Research Part I: Oceanographic Research Papers, 50(7): 889–916
  » More info & related results
2003 Journal Article
Cron, G.V. 2013. Bertilia - A new monotypic genus in the Senecioneae (Asteraceae) from South Africa. South African Journal of Botany, 88: 10–16
  » More info & related results
2013 Journal Article
Brongersma-Sanders, M., Stephan, K.M., Kwee, T.G. and de Bruin, M. 1980. Distribution of minor elements in cores from the Southwest Africa shelf with notes on plankton and fish mortality. Marine Geology, 37(1–2): 91–132
  » More info & related results
1980 Journal Article
Zettler, M.L., Bochert, R. and Pollehne, F. 2013. Macrozoobenthic biodiversity patterns in the northern province of the Benguela upwelling system. African Journal of Marine Science, 35(2): 283-290
  » More info & related results
2013 Journal Article
Tlhalerwa, K., Freiman, M.T. and Pikeht, S.J. 2012. Aerosol deposition off the southern African west coast by berg winds. South African Geographical Journal, 87(2): 152-161
  » More info & related results
2012 Journal Article
Bailey, G.W., Beyers, C.J. de B. and Lipschitz, S.R. 1985. Seasonal variation of oxygen deficiency in waters off southern South West Africa in 1975 and 1976 and its relation to the catchability and distribution of the Cape rock lobster Jasus lalandii. South African Journal of Marine Science, 3(1): 197-214
  » More info & related results
1985 Journal Article
Gingele, F.X. and Schmedl,G. 1999. Comparison of independent proxies in the reconstruction of deep-water circulation in the South-East Atlantic off Namibia. South African Journal of Marine Science, 21(1): 181-190
  » More info & related results
1999 Journal Article
Witbooi, U. and Gariseb, S. 2009. Diamond mining of pocket beach areas in the Sperrgebiet, Namibia. SAIEA
  » More info & related results
2009 Report2.38 mb pdf
Preview
De Clerck, O., Bolton, J.J. and John, D.M. 2003. Seaweed diversity patterns in Sub-Saharan Africa. Proceedings of the Marine Biodiversity in Sub-Saharan Africa: The Known and the Unknown. Cape Town , South Africa , 23-26 September 2003, pages 229-241
  » More info & related results
2003 Report255 kb pdf
Preview
Thomas, D.S.G. and Durcan, J.A. 2016. Age and significance of Holocene valley fills in the Skeleton Coast, Namibia. Quaternary International, 404(B): 197–198
  » More info & related results
2016 Journal Article
Bombi, P. 2018. Potential impacts of climate change on Welwitschia mirabilis populations in the Namib Desert, southern Africa. Journal of Arid Land, 10: 10.1007/s40333-018-0067-1
  » More info & related results
2018 Journal Article1.13 mb pdf
Preview
Swanepoel, W. 2006. Two new species of Commiphora (Burseraceae) from southern Africa. Bothalia, 36(1): 45-56
  » More info & related results
2006 Journal Article3.74 mb pdf
Preview

» Links to useful free software for working with shapefiles, kml and kmz files, pdf files and more.