Global Change Master Directorygsfc-gcmduso@mail.nasa.gov502013-05-19T05:23:20Zamd_nz Search: Parameters|BIOSPHERE|VEGETATIONhttp://mddemo.gsfc.nasa.gov/KeywordSearch/OpenSearch.do 34 0 http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]K024_2003_2008_NZ_1Analysis of the endolithic communities in the McMurdo Dry Valleys: microclimate, biodiversity, community structure, biomass, photosynthetic activity and genetic diversity160.9167,-76.9167,160.9167,-76.9167163.1,-77.6286,163.1,-77.6286162.7667,-77.6667,162.7667,-77.6667161.08333,-77.6,161.08333,-77.6162.73334,-76.88333,162.73334,-76.883332003-01-10T00:00:00Z2003-02-04T00:00:00Z2007-01-10T00:00:00Z2007-01-16T00:00:00Z2008-01-08T00:00:00Z2008-01-25T00:00:00Z2009-06-19T04:00:00ZThe photosynthetic activity of endolithic communities at three sites in the Ross Sea Region, including Mt Falconer in the Taylor Valley, Linnaeus Terrace in the Asgard Range, the Nussbaumriegel in ...http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]K024_2004_2006_NZ_2Examination of the photosynthetic behaviour (energy content, nutrient content, productivity and acclimation) of mosses and lichens throughout the summer season at Cape Hallett170.2667,-72.3167,170.2667,-72.31672004-11-11T00:00:00Z2004-12-07T00:00:00Z2005-11-25T00:00:00Z2005-12-14T00:00:00Z2009-06-19T04:00:00ZA possible sign of climate change is likely to be improved production and growth in plants. The response of net photosynthetic rates were measured on the large areas of relatively uniform moss cover ...http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]K024_1998_1999_NZ_2Experimental measurements of the effects of the environmental factors (temperature, light, water content and carbon dioxide concentration) on the photosynthesis activity of Antarctic mosses and lichens at Cape Hallett170.2667,-72.3167,170.2667,-72.31671998-12-31T00:00:00Z1999-02-20T00:00:00Z2009-06-19T04:00:00ZA detailed study of how the environmental factors temperature, light, water content and carbon dioxide concentration affected photosynthesis of the two common mosses Bryum argenteum and B. pseudotriquetrum ...http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]K024_2004_2006_NZ_1Plant biodiversity survey of the Cape Hallett region170.2667,-72.3167,170.2667,-72.31672004-11-11T00:00:00Z2004-12-07T00:00:00Z2005-11-25T00:00:00Z2005-12-14T00:00:00Z2009-06-19T04:00:00ZChanges in biodiversity (the numbers, types and amount of terrestrial lichens and mosses) are expected to be one signal for environmental change. Better collection techniques, better identification ...http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]K024_2006_2008_NZ_2Plant biodiversity survey of the Granite Harbour, Darwin Glacier and Cape Crozier regions 161.5,-77.25,163.5,-76.75169.26666,-77.55,169.26666,-77.55155.0,-80.5,161.0,-79.02007-01-19T00:00:00Z2007-01-31T00:00:00Z2007-12-03T00:00:00Z2007-12-15T00:00:00Z2008-01-08T00:00:00Z2008-01-25T00:00:00Z2009-06-19T04:00:00ZThe distribution and identity of lichens, mosses and endolithic algae were examined at sites around Granite Harbour, the Darwin Glacier and Igloo Spur at Cape Crozier to extend sampling of the Ross ...http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]K024_1996_1997_NZ_3A vegetation assessment of Beaufort Island167.0,-76.9833,167.0,-76.98331997-01-18T00:00:00Z1997-01-20T00:00:00Z2009-06-18T04:00:00ZThe vegetation at Beaufort Island was assessed and a report written to ICAIR including a description of the area, species present, comparison to other Dry Valley vegetation, the merits of the vegetation ...http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]K024_1998_1999_NZ_1Comparative studies of vegetation surveys, maps, species lists and lichen growth rates of the Cape Hallett region (Seebee Hook, Willett Cove and the scree slopes surrounding them) with a 1968 study 170.2667,-72.3167,170.2667,-72.31671998-12-31T00:00:00Z1999-02-20T00:00:00Z2004-01-20T00:00:00Z2004-02-03T00:00:00Z2009-06-18T04:00:00ZThe first botanical work at Cape Hallett was carried out when Hallett Station existed in the early to late 1960s. These studies were used for comparative purposes of vegetation cover and lichen growth ...http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]K024_1994_1995_NZ_1Measurements of climate data and the effect of high light and low temperature on the photosynthetic response (photosynthetic gas exchange rates and fluorescence) of mosses and lichens at Granite Harbour162.5333,-77.0167,162.5333,-77.01671994-11-11T00:00:00Z1994-12-05T00:00:00Z2009-06-18T04:00:00ZThe winter snowfall (during 1994) was unusually large and the area of Botany Bay was uniformly covered to a depth of 50 to 70cm. Furthermore, air temperatures were low being rarely above -6? C. These ...http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]K024_1989_1990_NZ_4The distribution and identity of terrestrial plant communities of the Lower Taylor Valley including lichens, mosses, hypolithic and endolithic algae163.15,-77.5667,163.15,-77.56671989-11-13T00:00:00Z1989-12-16T00:00:00Z2003-01-10T00:00:00Z2003-02-04T00:00:00Z2009-06-18T04:00:00ZIn the 1989-1990 season collecting trips were made to the Kukri Hills and to Mt. Falconer to prepare an initial species list of the Lower Taylor Valley. In the 2002-2003 season walking trips were ...http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]K024_1989_1990_NZ_1Vegetation mapping of the Fryxell Stream flush, Taylor Valley163.0733,-77.6138,163.0813,-77.61131989-11-13T00:00:00Z1989-12-16T00:00:00Z2009-06-18T04:00:00ZThe Frxyell Stream flows into Lake Fryxell in the Taylor Valley. Canada Pond lies upstream of Lake Fryxell adjacent to the Canada Glacier. The Fryxell Stream flush, both the upper flush (flush area ...http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]K024_1996_1997_NZ_2Vegetation surveys and trails of a 'tracker' system to allow both topography and plant occurrence to be mapped at Cape Royds166.1656,-77.5556,166.1656,-77.55561997-01-01T00:00:00Z1997-02-01T00:00:00Z2009-06-18T04:00:00ZA species list and vegetation notes of the Cape Royds area was completed. A high density of lichens occurred (eg Usnea sphacelata)at Horseshoe Bay and inland near the ice edge (Caloplaca sp.). A 'tracker' ...http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]K024_1989_2000_NZ_1Vegetation surveys of Granite Harbour region including Cape Geology, Botany Bay, Kar Plateau, Lion Island, Couloir Cliffs and Flat Iron162.0,-77.0833,163.0,-76.751989-11-13T00:00:00Z1989-12-16T00:00:00Z1992-01-08T00:00:00Z1992-02-03T00:00:00Z2000-01-11T00:00:00Z2000-02-02T00:00:00Z2009-06-18T04:00:00ZA preliminary survey of the plant life was conducted at Botany Bay and Cape Geology (Granite Harbour) to prepare an initial species list and to assess the general richness of the area (1989-1990). ...http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]K024_1979_1980_NZ_1Nitrogen fixation and carbon assimilation rates of fumarole plants from the Mt Erebus crater rim167.17,-77.53,167.17,-77.531979-12-24T00:00:00Z1979-12-24T00:00:00Z2009-06-08T04:00:00ZSterile samples of plants were taken from Mt. Erebus crater rim and returned to New Zealand for in situ acetylene reduction assays for nitrogen fixation and 14C assimilation assays.http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]K053_1993_1994_NZ_3Molecular genetics (DNA comparisons) of Prasiola crispa and Prasiola calophylla, two species of widspread Antarctic algae162.5,-77.0167,162.5,-77.01671993-12-16T00:00:00Z1994-01-27T00:00:00Z2009-05-11T04:00:00ZTwo species of widespread Antarctic algae were investigated with molecular genetics approaches to determine if they are two separate species. Prasiola crispa usually forms a sheet like growth on moist ...http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]K024_2007_2008_NZ_2GIS mapping of vegetation cover at two specially protected areas; Botany Bay, Granite Harbour and Cape Bird162.5833,-77.0,162.5833,-77.0166.6833,-77.1667,166.6833,-77.16672008-01-17T00:00:00Z2008-01-27T00:00:00Z2009-05-01T04:00:00ZThe ground cover of vegetation was mapped for the entire ASPA (Antarctic Specially Protected Areas) at Botany Bay, Granite Harbour and at Cape Bird including mosses, lichen and algae. The method for ...http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]K024_1989_1990_NZ_3Assessment of the recovery of damage to mosses (from walking tracks, cores and slab removal) from the Taylor Valley163.15,-77.5667,163.15,-77.56671989-11-13T00:00:00Z1989-12-16T00:00:00Z1997-01-01T00:00:00Z1997-02-01T00:00:00Z2003-01-10T00:00:00Z2003-02-04T00:00:00Z2009-04-23T04:00:00ZIt is commonly accepted that mosses in the Dry Valley's grow very slowly. The recovery of mosses was investigated by locating and investigating in detail various damaged sites from previous activity ...http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]K024_2002_2003_NZ_4Biodiversity survey at Mt Kyffin near the Beardmore Glacier171.6333,-83.8,171.6333,-83.82003-01-07T00:00:00Z2003-01-11T00:00:00Z2009-04-23T04:00:00ZA four person party visited an area close to Mt Kyffin on the south side of the Beardmore Glacier and at nearly 84? South latitude. In the 59-60 season the presence of many plants (lichens) and insects ...http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]K024_1999_2000_NZ_2Chlorophyll a fluorescence and temperature measurements from lichen and mosses buried under snow at Botany Bay, Granite Harbour162.5333,-77.0167,162.5333,-77.01672000-01-11T00:00:00Z2000-02-02T00:00:00Z2000-11-05T00:00:00Z2000-12-08T00:00:00Z2001-11-09T00:00:00Z2001-11-29T00:00:00Z2009-04-23T04:00:00ZFluorescence (chlorophyll a fluorescence) activity measurements were recorded for selected plants for about three weeks to determine if the photosystems of lichen or mosses are active in differing ...http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]K024_1979_1980_NZ_2Ecophysiology (CO2 / O2 exchange, nitrogen fixation rates and chlorophyll a levels) of endolithic algae from Marble Point, Antarctica163.8333,-77.4333,163.8333,-77.43331979-12-15T00:00:00Z1979-12-18T00:00:00Z2009-04-23T04:00:00ZRocks containing endolithic algae were collected from the Marble Point area. Infra-red gas analysis and Warburg Manometry studies were carried out to ascertain carbon dioxide and oxygen exchange. ...http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]K024_1980_2008_NZ_1Estimates of growth rates of lichen from photographs of lichen thalli on the Mt Falconer summit and ridge and the Rhone Bench (above Lake Bonney), Taylor Valley163.1,-77.5833,163.1,-77.58331980-12-01T00:00:00ZT00:00:00Z2009-04-23T04:00:00ZA small number of lichen thalli on Mt Falconer summit and ridge and the Rhone Bench (above Lake Bonney) were marked and photographed during the 80-81 field season. These plants were refound over subsequent ...http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]K024_2004_2006_NZ_3Nutrient transfer from penguin colonies to the vegetation at Cape Hallett: A measurement of the transfer of organic nitrogen in the form of ammonia170.2667,-72.3167,170.2667,-72.31672004-11-11T00:00:00Z2004-12-07T00:00:00Z2005-11-25T00:00:00Z2005-12-14T00:00:00Z2009-04-23T04:00:00ZThe transfer of nutrients from marine to terrestrial ecosystems are though to be important for vegetation. The transfer rate of organic nitrogen in the form of ammonia from the penguin colonies to ...http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]K024_2003_2004_NZ_1The use of GIS mapping techniques to assess changes in vegetation at Cape Hallett170.2667,-72.3167,170.2667,-72.31672004-01-20T00:00:00Z2004-02-03T00:00:00Z2009-04-23T04:00:00ZA detailed vegetation map of a 120m by 28m study site was published by Rudolph (1963). A paper copy of the original maps of this research was obtained from archives at the University of Ohio.The map ...http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]K024_1996_1997_NZ_1Vegetation survey in a proposed long-term monitoring site at Castle Rock166.7667,-77.8,166.7667,-77.81997-01-01T00:00:00Z1997-02-01T00:00:00Z2009-04-23T04:00:00ZThe site, near Castle Rock was delineated in a previous season by another investigator. The area was carefully searched and plants located, identified and as necessary, collected for herbarium and ...http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]K052_1982_1983_NZ_5A hot house experiment at Cape Bird to determine the effects of microclimate on plant establishment166.405,-77.142,166.405,-77.1421982-11-17T00:00:00Z1983-01-27T00:00:00Z2009-04-20T04:00:00ZA small perspex frame was placed over bare mineral soil adjacent to the mosses in Keble Valley to examine the effects of humidity, temperature and microclimate on plant establishment. Many green ...http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]K014_1982_1983_NZ_3A distribution of vegetation survey and an environmental assessment carried out to identify any damage caused by previous occupation of the area by man at Cape Hallett's Specially Protected Area No. 7170.2667,-72.3167,170.2667,-72.31671983-01-01T00:00:00Z1983-02-28T00:00:00Z2009-03-17T04:00:00ZSpecially Protected area No.7 is located at the base of Seabee Spit and comprises two major habitat types: a large flat area interrupted by small hummocks and depressions, and adjoining steep scree ...http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]K081_1996_2000_NZ_1Benthic mat biomass, productivity (photosynthesis and respiration) and contributions to lake nutrient cycling in Lake Hoare, Taylor Valley162.85,-77.6333,162.85,-77.63331996-11-22T00:00:00Z1996-12-21T00:00:00Z1999-01-04T00:00:00Z1999-01-27T00:00:00Z2000-11-18T00:00:00Z2000-12-05T00:00:00Z2002-11-17T00:00:00Z2002-12-09T00:00:00Z2009-02-27T05:00:00ZThe importance of benthic microbial mat production in the Lake Hoare, Taylor Valley and how the mats are adapted to survive and grow in deep water (extreme low light but no freezing) was investigated. ...http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]K053_1987_1988_NZ_3Ecological survey of the birds, algae, lichen, fungi, and invertebrates on ice free areas of the Edward VII Peninsula, Marie Byrd Land-155.5367,-78.0028,-153.4333,-77.211987-11-28T00:00:00Z1988-01-12T00:00:00Z2009-01-30T05:00:00ZA 5-6 week remote field expedition was carried out to visit all rock outcrops in the Edward VII Peninsula, Marie Byrd Land to make a general biological survey of the region and assemble good plant ...http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]K058_1996_1997_NZ_1Ecological survey of the algae, lichen, fungi, and invertebrates on ice free areas of the La Gorce Mountains147.0,-86.5833,147.0,-86.58331997-01-01T00:00:00Z1997-01-30T00:00:00Z2009-01-16T05:00:00ZA detailed study of far south ecosystems was conducted at La Gorce Mountains and nearby nunataks. A general biological survey was carried out describing the occurrence of any organisms encountered ...http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]K053_1993_1994_NZ_1The taxonomy and distribution of algae cultured from samples from Granite Harbour: Oscillatoriales and Cyanobacteria162.5,-77.0167,162.5,-77.01671993-12-16T00:00:00Z1994-01-27T00:00:00Z2009-01-16T05:00:00ZSamples were removed from the complete range of habitats supporting algal growth at Granite Harbour. A total of over 190 samples were examined microscopically and a taxonomic list was compiled. Cultures ...http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]K053_1982_1983_NZ_2Vegetation distribution (distribution mapping and microscopic examination) at Cape Bird166.6833,-77.1667,166.6833,-77.16671982-11-24T00:00:00Z1982-12-17T00:00:00Z2009-01-16T05:00:00ZExtensive vegetation mapping and microscopic examination of sample material was completed at Cape Bird in detail enough so that maps were produced marking the location of all major algal, moss and ...http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]K053_1982_1983_NZ_1Vegetation distribution (maps, soil temperature, and microscopic examination) on the surface of heated ground at Tramway Ridge, Mt Erebus167.1,-77.5167,167.1,-77.51671982-11-24T00:00:00Z1982-12-17T00:00:00Z2009-01-16T05:00:00ZDescriptions of the vegetation distribution on the surface of steam heated warm ground, especially in relation to temperature gradients from cold to hot areas was investigated on the summit of Mt ...http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]K081_1997_2000_NZ_1Benthic mat biomass and productivity (photosynthesis and respiration) in Lake Vanda, Wright Valley and the role of invertebrates in carbon cycling in the lake161.6666,-77.5166,161.6666,-77.51661997-12-10T00:00:00Z1997-12-29T00:00:00Z1998-12-03T00:00:00Z1998-12-26T00:00:00Z1999-11-12T00:00:00Z1999-11-29T00:00:00Z2008-10-14T04:00:00ZThe importance of benthic microbial production in the lakes of the McMurdo Dry Valleys and how the benthic cyanobacterial mats are adapted to survive and grow in deep water (extreme low light but ...http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]K081_2004_2005_NZ_4Carbon and nitrogen fixation rates from microbial mat populations in moraine ponds on the McMurdo Ice Shelf165.3333,-78.0,165.3333,-78.02005-01-21T00:00:00Z2005-01-29T00:00:00Z2008-10-14T04:00:00ZCarbon and nitrogen fixation experiments were conducted on mats collected from 10 of the ponds on the McMurdo Ice Shelf near Bratina Island. Nitrogen fixation was determined via reduction of acetylene ...http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]K002_Latitudinal_Gradient_Project_LGPLatitudinal Gradient Project (LGP)180.0,-86.0,150.0,-72.02007-02-25T05:00:00ZThe Latitudinal Gradient Project (LGP) ("http://www.lgp.aq/") is aimed at
increasing the understanding of the coastal marine, freshwater and terrestrial
ecosystems that exist along the Victoria Land ...