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19 Titles Match Your Query
Showing 1 through 19 of 19
1. Analysis of the effects of environmental factors (temperature, light, water content and CO2 concentration) on the photosynthesis activity of two common Antarctic mosses and a cyanobacterial mat in the Taylor Valley [K024_2002_2003_NZ_2]
A 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 Hennediella ...


2. Analysis of the endolithic communities in the McMurdo Dry Valleys: microclimate, biodiversity, community structure, biomass, photosynthetic activity and genetic diversity [K024_2003_2008_NZ_1]
The 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 ...


3. Comparison of the photosynthetic performance of Umbilicaria species in the Ross Sea region [K024_2002_2003_NZ_3]
The photosynthetic performance of Umbilicaria species was measured under standard conditions in the laboratory and compared with Umbilicaria species from the Taylor Valley and Mt Kyffin.


4. Microclimate measurements (air temperature, light levels and relative humidity) near vegetation at Botany Bay, Granite Harbour [K024_1999_2000_NZ_1]
Several data loggers were deployed in and around plants in order to obtain more information of conditions at the plant level to be able to determine if plants performance characteristics are adapted ...


5. Plant biodiversity survey of the Granite Harbour, Darwin Glacier and Cape Crozier regions [K024_2006_2008_NZ_2]
The 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 ...


6. Adaptive strategies of lichen species to cold environments: Antarctica and the Mediterranean high mountains. [CNDA-ESP_ANT94-0905_LIQ_05]   PARENT DIF
In English: At the beginning of the 1990's our ecophysiological research on Antarctic lichens was focussed on adaptations to cope with low temperatures. We assumed that low ...


7. Biology of lichen communities in Antarctica. [CNDA-ESP_LIQ_PAD]   CHILD DIFs
In English: This dataset contains information on the registered data on studies of the biology of lichen communities in Antarctica. This dataset is also the parent record ...


8. Photosynthesis and water relationships on Antarctic nanofruticose lichens. [CNDA-ESP_ANT94-0907-E_LIQ_06]   PARENT DIF
In English: Scientific objectives: -To study the photosynthetic behaviour of lichen nanofruticose species (Bacidia Stipata, buellia cladocarpiza, Catillaria corymbosa and ...


9. Sensitivity to temperature and radiation and irradiance along latitudinal and altitudinal gradients [CNDA-ESP_ANT99-0680_LIQ_07]   PARENT DIF
In English: This dataset contains information on the ECOTER project, carrying out an integrated study of Antarctic vegetation communities, including mosses, lichens and vascular ...


10. Study of nitrogen fixation, photosynthesis and lichenic recolonisation in the Antarctic tundra. [CNDA-ESP_ANT93-0011-E_LIQ_04]   PARENT DIF
In English: Scientific objectives: -Evaluate the degree of nitrogen fixation in run offs by Leptogium puberulum and Nostoc sp. in relation to their photosynthetic activity ...


11. Biodiversity survey at Mt Kyffin near the Beardmore Glacier [K024_2002_2003_NZ_4]
A 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 ...


12. Chlorophyll a fluorescence and temperature measurements from lichen and mosses buried under snow at Botany Bay, Granite Harbour [K024_1999_2000_NZ_2]
Fluorescence (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 ...


13. Estimates 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 Valley [K024_1980_2008_NZ_1]
A 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 ...


14. Measurements of lichen activity (chlorophyll a fluorescence) for an entire year from Botany Bay, Granite Harbour [K024_1999_2000_NZ_3]
A system was established at the back of Botany bay to monitor chlorophyll a fluorescence from a thallus of Umbilicaria aprina continuously through the winter and the next season (lichen activity through ...


15. Measurements of photosynthetic recovery after the winter cold and desiccation at Botany Bay, Granite Harbour [K024_2000_2001_NZ_1]
Three CMS400 photosynthesis systems were used to study the recovery of photosynthetic activity by lichens and mosses rewetted for the first time after the winter at Botany Bay, Granite Harbour.


16. Measurements of the shielding against UVA by protective pigments in the moss Bryum subrotundifolium at Botany Bay, Granite Harbour [K024_2000_2001_NZ_2]
A new chlorophyll fluorescence system, UVA PAM allowed the protective shield against UVA radiation to be measured in the moss Bryum subrotundifolium. An area of the moss was heavily shaded for 10 ...


17. Ecophysiological and floristic study of the lichen communities in Livingston Island. [CNDA-ESP_ANT89-0804-E_LIQ_01]   PARENT DIF
In English: Scientific objectives: -Floristic study of Livingston Island. -Structure, succession and dynamism of the principal lichen and bryolichen communities. -Chorological study (distribution) ...


18. Lichen study in the South Shetland Islands. [CNDA-ESP_ANT92-0016-E_LIQ_03]   PARENT DIF
In English: Scientific objectives: -Study of nitrogen fixation in Leptogium puberulum with respect to photosynthetic rate under natural condition; -Microclimatic study of lichenous biotopes where ...


19. The biology of lichen communities in Livingston Island (Antarctic). [CNDA-ESP_ANT90-1117-E_LIQ_02]   PARENT DIF
In English: Scientific objectives: -The evaluation of photosynthesis and respiration of significant macrolichen species in the Antarctic tundra; -Study of isoenzymes in bipolar lichens; -Microclimatic ...


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