More information:

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


Description:

Welwitschia mirabilis: observations on movement of water and assimilates under föhn and fog conditions.

Summary / Notes:

Evidence that Welwitschia is able to absorb and translocate the water which condenses on its leaves under foggy conditions has been obtained by the application and subsequent localisation of tritiated water. Scanning electron microscopy of the leaves suggests that the path of water uptake may be via the stomata. Rates of uptake under foggy and fhn wind conditions are compared. Preliminary investigation of the movement of photosynthetic assimilates indicates that these are rapidly translocated in the direction of the meristematic regions. Keywords: Abaxial Ieaf surface, activcly-meristematic stem regions, Advection fogs, Artifically-created microclimate, Atmospheric humidity, Bizarre habit, CO2 assimilation, Distal diffusion rates, Ethanol, Internal anatomy, Liquid-scintillation, Meristematic zone, Proximal, Transpiration by leaves and Water translocated.

Year: 1973

Type: Journal Article

Download: Welwitschia mirabilis_observations on movement of water and assimilates under foehn and fog conditions.pdf (950 kb)

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
Zhai, L., Berg, C., Cebeci, F., Kim, Y., Milwild, M., Rubner, M.F. and Cohen, R.E. 2006. Patterned Superhydrophobic Surfaces: Toward a Synthetic Mimic of the Namib Desert Beetle. Nano Letters, 6(6): 1213-1217
  » More info & related results
2006DRFN DLIBJournal Article
Shanyengana, E.S., Sanderson, R.D., Seely, M.K. and Schemenauer, R.S. 2003. Testing greenhouse shade nets in collection of fog for water supply. Journal of Water Supply, Research and Technology-Aqua, 52: 237-241
  » More info & related results
2003DRFN DLIBJournal Article805 kb pdf
Preview
Botes, A. and Manning, N. 2002. Interactive Environmental learning and action in the Kuiseb (ELAK). Proceedings of the Stakeholders Workshop: Kuiseb basin management, Rössing mine, Thursday 12th September 2002
  » More info & related results
2002DRFN DLIBReport8.81 mb pdf
Preview
Lange, O.L., Meyer, A., Ullmann, I. and Zellner, H. 1991. Microclimate conditions, water content and photosynthesis of lichens in the coastal fog zone of the Namib Desert: Measurements in the fall. Flora, 185: 233-266
  » More info & related results
1991DRFN DLIBJournal Article3.03 mb pdf
Preview
Day, J.A. 1993. The major ion chemistry of some southern African saline Systems. Developments in Hydrobiology, 87: 37-59
  » More info & related results
1993 Journal Article
Eitel, B., Kadereit, A., Blümel, W.D., Hüser, K. and Kromer, B. 2005. The Amspoort Silts, northern Namib desert (Namibia): formation, age and palaeoclimatic evidence of river-end deposits. Geomorphology, 64: 299–314
  » More info & related results
2005 Journal Article1.3 mb pdf
Preview
Jürgens, N., Oldeland, J., Hachfeld, B., Erb, E. and Schultz, C. 2013. Ecology and spatial patterns of large-scale vegetation units within the central Namib Desert. Journal of Arid Environments, 93: 59–79
  » More info & related results
2013 Journal Article
Hauffe, H.C., Searle, J.B. and Seely, M.K. 1994. The taxonomic status of two morphotypes of the tenebrionid Onymacris rugatipennis: indications from behavioural and genetical studies. Journal of Zoology, 233(2): 193–201
  » More info & related results
1994 Journal Article
Boyer, D.C. and Boyer, H.J. 1989. The status of alien invasive plants in the major rivers of the Namib Naukluft Park. Madoqua, 16(1): 51-58
  » More info & related results
1989DRFN DLIBJournal Article807 kb pdf
Preview
Mayrhofer, H. and Wirth, V. 2011. Rinodina australiensis (lichenized Ascomycetes, Physciaceae) recorded from Africa. Herzogia, 24(1): 53 –57
  » More info & related results
2011 Journal Article1.93 mb pdf
Preview
Mignon, P. and Goudie, A. 2000. Granite Landforms of the Central Namib. Acta Universitatis Carolinae 2000 Geographica, XXXV ( Supplementum), 17-38
  » More info & related results
2000 Journal Article3.11 mb pdf
Preview
Withers, P.C. 1979. Ecology of a small mammal community on a rocky outcrop of the Namib Desert. Madoqua, II(3): 229-246
  » More info & related results
1979 Journal Article4.32 mb pdf
Preview
Brain, C.K. and Koste, W. 1993. Rotifers of the genus Proales from saline springs in the Namib desert, with the description of a new species. Hydrobiologia, 255-256(1): 449-454
  » More info & related results
1993 Journal Article
von Willert, D.J., Eller, B.M., Brinckmann, E. and Baasch, R. 1982. CO2 gas exchange and transpiration of Welwitschia mirabilis Hook. fil. in the central Namib desert. Oecologia, 55(1): 21-29
  » More info & related results
1982 Journal Article
Jacobson, K.M., Jacobson, P.J. and Miller, O.K. 1993. The mycorrhizal status of Welwitschia mirabilis. Mycorrhiza, 3(1): 13-17
  » More info & related results
1993 Journal Article3.15 mb pdf
Preview
Jürgens, N. 2001. Remarkable Differences in Desertification Processes in the Northern and Southern Richtersveld (Northern Namaqualand, Republic of South Africa). Sustainable Land Use in Deserts, 177-187
  » More info & related results
2001 Book, Book Section, Booklet
Knetsch, G. 1938. 15. Aus dem Sedimentstammbaum eines Trockengebietes (Beobachtung aus der südlichen Namib, Südwestafrika). Geologische Rundschau, 29(3-5): 334-347
  » More info & related results
1938 Journal Article
Kocurek, G., Lancaster, N., Carr, M. and Frank, A. 1999. Tertiary Tsondab Sandstone Formation: preliminary bedform reconstruction and comparison to modern Namib Sand Sea dunes. Journal of African Earth Sciences, 29(4): 629–642
  » More info & related results
1999 Journal Article
Cooper, P.D. 1982. Water balance and osmoregulation in a free-ranging tenebrionid beetle, Onymacris unguicularis, of the Namib Desert. Journal of Insect Physiology, 28(9): 737–742
  » More info & related results
1982 Journal Article
Krapf, C.B.E., Stollhofen, H. and Stanistreet, I.G. 2003. Contrasting styles of ephemeral river systems and their interaction with dunes of the Skeleton Coast erg (Namibia). Quaternary International, 104(1): 41–52
  » More info & related results
2003 Journal Article
Teller, J.T., Rutter, N., Lancaster, N. 1990. Sedimentology and paleohydrology of Late Quaternary lake deposits in the northern Namib Sand Sea, Namibia. Quaternary Science Reviews, 9(4): 343–364
  » More info & related results
1990 Journal Article
Annegarn, H.J., Van Grieken, R.E., Bibby, D.M. and Von Blottnitz, F. 1983. Background aerosol composition in the namib desert, South West Africa (Namibia). Atmospheric Environment (1967), 17(10): 2045–2053
  » More info & related results
1983 Journal Article
Lancaster, N. 1983. Controls of Dune Morphology in the Namib Sand Sea. Developments in Sedimentology, 38: 261–289
  » More info & related results
1983 Journal Article
Goudie, A.S. and Parker, A.G. 1998. Experimental simulation of rapid rock block disintegration by sodium chloride in a foggy coastal desert. Journal of Arid Environments, 40(4): 347–355
  » More info & related results
1998 Journal Article
Pickford, M. 1997. Lower Miocene Suiformes from the northern Sperrgebiet, Namibia, including new evidence for the systematic position of the Sanitheriidae. Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science, 325(4): 285–292
  » More info & related results
1997 Journal Article
Henschel, J.R. 1995. Tool Use by Spiders: Stone Selection and Placement by Corolla Spiders Ariadna (Segestriidae) of the Namib Desert. Ethology, 101(3): 187–199
  » More info & related results
1995 Journal Article
Bauer, A.M. and Good, D.A. 1996. Phylogenetic systematics of the day geckos, genus, Rhoptropus (Reptilia: Gekkonidae), of south-western Africa. Journal of Zoology, 238(4): 635–663
  » More info & related results
1996 Journal Article
Kolberg, H. and Burke, A. 2007. Saving a threatened succulent. A partnership between NAMDEB, MSBP and NBRI in conservation of the threatened species Juttadinteria albata. Poster prepared for the NBRI Open Day 2007
  » More info & related results
2007 Poster
Kok, O.B. and Grobbelaar, J.U. 1985. Notes on the availability and chemical composition of water from the gravel plains of the Namib-Naukluft Park. Journal of the Limnological Society of Southern Africa, 11(2): 66-70
  » More info & related results
1985 Journal Article
Pickford, M., Senut, B., Mocke, H., Mourer-Chauviré, C., Rage, J-C., and Mein, P. 2014. Eocene aridity in southwestern Africa: timing of onset and biological consequences. Transactions of the Royal Society of South Africa
  » More info & related results
2014 Journal Article
Wiggs, G.F.S., Bullard, J.E., Garvey, B. and Castro, I. 2002. Interactions Between Airflow and Valley Topography with Implications for Aeolian Sediment Transport. Physical Geography, 23(5): 366-380
  » More info & related results
2002 Journal Article
Burke, A., Cooper, T. and Noli, D. 2004. Initial results determining spatial and temporal patterns of rainfall in the Sperrgebiet, South-West Namibia. Journal of the Namibia Scientific Society, 52: 117-122
  » More info & related results
2004 Journal Article2.08 mb pdf
Preview
Greenbaum, N., Schwartz, U., Benito, G., Porat, N., Cloete, G.C. and Enzel, Y. 2014. Paleohydrology of extraordinary floods along the Swakop River at the margin of the Namib Desert and their paleoclimate implications. Quaternary Science Reviews, 103(1): 153–169
  » More info & related results
2014 Journal Article
Wharton, R.A. and Seely, M. 1982. Species composition of and biological notes on Tenebrionidae of the lower Kuiseb River and adjacent gravel plain. Madoqua, 13(1): 5-25
  » More info & related results
1982 Journal Article2.02 mb pdf
Preview
Koch, C. 1962. The Tenebrionidae of southern Africa XXXII: New psammophilous species from the Namib Desert. Annals of the Transvaal Museum, 24: 107-159
  » More info & related results
1962 Journal Article5.04 mb pdf
Preview
Lehmann, D., Mfune, J.K.E., Gewers, E., Cloete, J., Brain, C. and Voigt, C.C. 2013. Dietary plasticity of generalist and specialist ungulates in the Namibian Desert: A Stable Isotopes Approach. PLoS ONE 8(8): e72190
  » More info & related results
2013 Journal Article718 kb pdf
Preview
Butler. V., Bornman. C.H. and Evert. R.F. 1973. Welwitschia mirabilis: morphology of the seedling. Botanical Gazette, 134(1): 52-59
  » More info & related results
1973 Journal Article1.81 mb pdf
Preview
Muller. M. 2006. Dispersal ecology of the !nara-melon along the Kuiseb River, Central Namib. The Changing Culture and Nature of Namibia, 181-184
  » More info & related results
2006DRFN DLIBBook, Book Section, Booklet769 kb pdf
Preview
Gebien, H. 1937. Die Tenebrioniden (Coleoptera Heteromera) der Namibwüste in Südwestafrika
  » More info & related results
1937DRFN DLIBBook, Book Section, Booklet31.94 mb pdf
Preview
Leopold, M., Völkel, J. and Heine, K. 2006. A ground-penetrating radar survey of late Holocene fluvial sediments in NW Namibian river valleys: characterization and comparison. Journal of the Geological Society, 163: 923-936
  » More info & related results
2006 Journal Article
Rashid, F. and Heyns, J. 1990. Tylenchorhynchus species from Namibia (Nematoda: Belonolaimidae). Phytophylactica, 22: 403-412
  » More info & related results
1990 Journal Article1.23 mb pdf
Preview
Shelley, R.M. and Crawford, C.S. 1996. Cnemodesmus riparius, n. sp., riparian milliped from the Namib Desert, Africa (Polydesmida: Paradoxosomatidae). Myriapodologica, 4(1): 1-8
  » More info & related results
1996DRFN DLIBJournal Article1.98 mb pdf
Preview
Bridgeford, P., Bridgeford, M. and Dürr, M. 2005. Monitoring and ringing Lappet-faced Vultures in the Namib 1991-2004. Lanioturdus, 38(3-4): 9-12
  » More info & related results
2005 Journal Article343 kb pdf
Preview
Williams, J.B. 1999. Heat production and evaporative water loss of dune larks from the Namib desert. Condor, 101: 432–438
  » More info & related results
1999Bibliography compiled by Bird Database ProjectJournal Article627 kb pdf
Preview
Koch, C. 1962. Composition, xerophilous character and origin of the Namib Tenebrionidae. Scientific Papers of the Namib Desert Research Station, 5: 66-69
  » More info & related results
1962 Journal Article585 kb pdf
Preview
Sellnick, M. 1957. Eine neue Milbe aus der Namib, Südwestafrika (Acari, Oribatei). Journal of the Entomological Society of Southern Africa, 20(2): 250-256
  » More info & related results
1957 Journal Article322 kb pdf
Preview
Costa, G., Leonardi, M-E. and Petralia, A. 1987. Reproductive behaviour of the Giant Cricket Brachytrupes membranaceus (Drury) in the Namib. Madoqua, 15(3): 217-228
  » More info & related results
1987 Journal Article1.38 mb pdf
Preview
Morse, S.A., Bennett, M.R., Liutkus-Pierce, C., Thackeray, F., McClymont, J., Savage, R. and Crompton, R.H. 2013. Holocene Footprints in Namibia: The Influence of Substrate on Footprint Variability. American Journal of Physical Anthropology, 2013: 1-15
  » More info & related results
2013 Journal Article4.38 mb pdf
Preview
Seymour, R.S., Withers, P.C. and Weathers, W.W. 1998. Energetics of burrowing, running, and free-living in the Namib Desert golden mole (Eremitalpa namibensis). Journal of Zoology, 244(1): 107-117
  » More info & related results
1998 Journal Article
Schultz, C. 2006. Remote sensing the distribution and spatiotemporal changes of major lichen communities in the Central Namib Desert. PhD These, Universität Kaiserslautern
  » More info & related results
2006 Thesis19.65 mb pdf
Preview

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