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176 Titles Match Your Query
Showing 1 through 50 of 176 Next
1. Impact of changes in UV and visible radiation on the reflective properties of plant photosynthetic surfaces [ASAC_941]
We investigated how surface reflectance properties and pigment concentrations of Antarctic moss varied over species, sites, icrotopography, and with water content. We found that species had significantly ...


2. Photosynthetic rates of Antarctic sea-ice algae [ASAC_854]
From the abstract of one of the papers: Oxygen microelectrodes were used to measure the photosynthetic rates of Antarctic fast ice algal mats. Using the oxygen flux across the diffusive boundary ...


3. Sea Ice Algae of the Saline Lakes of the Vestfold Hills [ASAC_764]
Samples were taken from Ace Lake, Watts Lake, Dingle Lake and Williams Lake. 3-5 ice cores were taken from each lake, in the hope of finding phytoplankton. 13 cm diameter cores, sectioned at 20 cm ...


4. Integrated Biosphere Simulator Model (IBIS), Version 2.5 [doi:10.3334/ORNLDAAC/808_1]
The Integrated Biosphere Simulator (or IBIS) is designed to be a comprehensive model of the terrestrial biosphere. Tthe model represents a wide range of processes, including land surface physics, ...


5. NACP VPRM NEE Parameters Optimized to North American Flux Tower Sites, 2000-2006 [doi:10.3334/ORNLDAAC/1349_1]
This data set provides Vegetation Photosynthesis Respiration Model (VPRM) net ecosystem exchange (NEE) parameter values optimized to 65 flux tower sites across North America. The parameters include ...


6. PnET Models: Carbon, Nitrogen, Water Dynamics in Forest Ecosystems (Vers. 4 and 5) [doi:10.3334/ORNLDAAC/817_1]
PnET (Photosynthetic / EvapoTranspiration model) is a nested series of models of carbon, water, and nitrogen dynamics in forest ecosystems. The models can be used to predict transient responses in ...


7. PnET-BGC: Modeling Biogeochemical Processes in a Northern Hardwood Forest Ecosystem [doi:10.3334/ORNLDAAC/818_1]
This archived model product contains the directions, executables, and procedures for running PnET-BGC to recreate the results of: Gbondo-Tugbawa, S.S., C.T. Driscoll , J.D. Aber and G.E. Likens. 2001. ...


8. BOREAS Follow-On FLX-01 NSA-OBS Derived Data - NEE, GEE, and Respiration [doi:10.3334/ORNLDAAC/603_1]
The BOREAS Follow-On FLX-01 team derived NEE, GEE, and Respiration using measured tower C02 flux measurements taken at the NSA-OBS site. The data provided contain half-hourly measurements as well ...


9. BOREAS TE-04 Branch Bag Data from Boreal Tree Species [doi:10.3334/ORNLDAAC/319_1]
Contains 1996 TE-04 data of branch bag studies of photosynthesis, respiration and stomatal conductance of boreal forest species using the open MPH-1000 system.


10. BOREAS TE-04 Gas Exchange Data from Boreal Tree Species [doi:10.3334/ORNLDAAC/320_1]
Contains TE-04 data on gas exchange studies of photosynthesis, respiration and stomatal conductance of boreal forest species using the MPH-1000 system.


11. BOREAS TE-05 Leaf Gas Exchange Data [doi:10.3334/ORNLDAAC/324_1]
Contains the leaf gas exchange data collected by TE-05 in the NSA and SSA.


12. BOREAS TE-09 Photosynthetic Capacity and Foliage Nitrogen Data [doi:10.3334/ORNLDAAC/343_1]
Contains TE-09 data on the response of photosynthetic capacity to foliage nitrogen concentration and photosynthetic capacity in the canopies of Norther Study Area sites.


13. BOREAS TE-09 Photosynthetic Response Data [doi:10.3334/ORNLDAAC/344_1]
Contains photosynthetic response of boreal tree species to varied parameters. Collected by TE-09 BOREAS group in the Northern Study Area.


14. BOREAS TE-09 in Situ Diurnal Gas Exchange of NSA Boreal Forest Stands [doi:10.3334/ORNLDAAC/337_1]
Contains in situ diurnal gas exchange and water potential data for forest stand in the Northern Study Area collected by TE-09.


15. BOREAS TE-10 Leaf Gas Exchange Data [doi:10.3334/ORNLDAAC/346_1]
Contains gas exchange data collected by TE-10 during the BOREAS project.


16. BOREAS TE-10 Photosynthetic Response Data [doi:10.3334/ORNLDAAC/347_1]
Contains the 1994 oxygen evolution and leaf characteristics data collected by TE-10.


17. BOREAS TE-12 Leaf Gas Exchange Data [doi:10.3334/ORNLDAAC/351_1]
Contains data collected by TE-12 of single leaf gas exchange properties of dominant vascular plant species in the SSA in 1994 and 1995.


18. BOREAS TF-11 SSA Fen Leaf Gas Exchange Data [doi:10.3334/ORNLDAAC/456_1]
Contains the TF-11 leaf gas exchange data made with the LI-6200 and LI-6400 systems.


19. BOREAS TGB-01/TGB-03 NEE Data over the NSA Fen [doi:10.3334/ORNLDAAC/379_1]
Contains TGB-03 NET Ecosystem Exchange data from the combined TGB-01 and TGB-03 teams.


20. BOREAS TGB-08 Photosynthetic Rate Data over the SSA-OBS and the SSA-OJP [doi:10.3334/ORNLDAAC/393_1]
Contains TGB-08 Photosynthesis data measured at 30C by month.


21. Forest-BGC Model (OTTER) [doi:10.3334/ORNLDAAC/36_1]
Steve Running's Forest-BGC Model (v.1991)


22. LBA-ECO CD-02 Leaf Level Gas Exchange, Chemistry, and Isotopes, Amazonia, Brazil [doi:10.3334/ORNLDAAC/1010_1]
This data set reports leaf gas flux and leaf properties from samples collected from trees, liana, pasture saplings, and pasture grass located at eight different sampling locations in the states of ...


23. LBA-ECO CD-04 Leaf Photosynthesis and Respiration, Tapajos National Forest: 2000-2006 [doi:10.3334/ORNLDAAC/1060_1]
This data set reports the results of measurements of (1) leaf-level photosynthesis response curves for the effects of temperature, leaf age, warming, irradiation, and circadian rhythm and (2) leaf-level ...


24. SAFARI 2000 BVOC Measurements at Skukuza and Maun Flux Towers, Wet Season 2001 [doi:10.3334/ORNLDAAC/759_1]
Biogenic volatile organic compound (BVOC) emissions were measured in a Colophospermum mopane woodland near Maun, Botswana, and in a Combretum-Acacia savanna in Kruger National Park, 13 km from Skukuza, ...


25. SAFARI 2000 Kalahari Transect CO2, Water Vapor, and Heat Flux, Wet Season 2000 [doi:10.3334/ORNLDAAC/765_1]
Short-term measurements of carbon dioxide, water, and energy fluxes were collected at four locations along a mean annual precipitation gradient in southern Africa during the SAFARI 2000 wet (growing) ...


26. BOREAS RSS-08 BIOME-BGC Model Simulations at Tower Flux Sites in 1994 [doi:10.3334/ORNLDAAC/295_1]
BIOME-BGC is a general ecosystem process model designed to simulate biogeochemical and hydrologic processes across multiple scales. BIOME-BGC is used to estimate daily water and carbon budgets for ...


27. Canopy Photosynthesis Rates (FIFE) [doi:10.3334/ORNLDAAC/27_1]
Canopy photosynthesis rates and resistance chamber measurements during FIFE


28. Leaf Photosynthesis Rates (FIFE) [doi:10.3334/ORNLDAAC/46_1]
Measurements of leaf photosynthesis rates measured with Li-Cor LI-6200


29. Leaf Photosynthetic Parameters, Vcmax and Jmax, Barrow, Alaska, 2012-2016 [Leaf_Photosynthetic_Parameters_Vcmax_Jmax_Barrow_Alaska_2012-2016]
Photosynthetic parameters Vcmax and Jmax estimated from CO2 response curves and from light saturated photosynthesis using the one point method. Data were collected in Barrow 2012-2016 on 7 species.


30. 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 ...


31. 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 ...


32. 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 ...


33. 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.


34. Examination of the photosynthetic behaviour (energy content, nutrient content, productivity and acclimation) of mosses and lichens throughout the summer season at Cape Hallett [K024_2004_2006_NZ_2]
A 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 ...


35. Experimental 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 Hallett [K024_1998_1999_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 B. pseudotriquetrum ...


36. Measurements 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 Harbour [K024_1994_1995_NZ_1]
The 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 ...


37. 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 ...


38. 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.


39. Photosynthesis, fluorescence and microclimate measurements of several species of mosses and lichens from Botany Bay at Granite Harbour [K024_1991_1992_NZ_1]
The photosynthetic rate of Antarctic mosses and lichens was studied with investigations into the effects of high levels of light radiation and of possible UV effects. The mosses Pottia heimii, Bryum ...


40. Photosynthetic physiology (CO2/O2 exchange, optimum temperature and light levels) of common bryophytes species that grow in the melt streams from glaciers in the Dry Valleys [K024_1979_1980_NZ_3]
Previous work (by Rostofer, 1970) covered the photosynthetic physiology of two common bryophyte species (Bryum antarcticum and B. Argenteum) found in the melt-streams from glaciers in the Dry Valleys ...


41. The photosynthetic performance (photosynthesis response curves to light and water content at various temperatures) of the pale and dark forms of the lichen Usnea spacelata from Cape Royds [K024_1996_1997_NZ_4]
The photosynthetic performance of the fruticose lichen Usnea sphacelata was measured using advanced, climatised photosynthetic cuvettes at Scott Base. Individuals of the Usnea sp were identified and ...


42. Adaptive strategies of lichen species to cold environments: Antarctica and the Mediterranean high mountains. [CNDA-ESP_ANT94-0905_LIQ_05]   PARENT METADATA
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 ...


43. AfSIS MODIS Collection: Primary Productivity, 2012 Release [CIESIN_AfSIS_MODIS_PP2012]
The Africa Soil Information Service (AfSIS) Moderate Resolution Imaging Spectroradiometer (MODIS) Collection's Primary Productivity data set contains rasters with the following calculations: time ...


44. Agricultural Online Access (AGRICOLA) Database [USDA_AGRICOLA]
AGRICOLA (AGRICultural OnLine Access) is a bibliographic database of citations to the agricultural literature created by the National Agricultural Library and its cooperators. Production ...


45. Algal composition, physico-chemical features, photosynthetic carbon metabolism, nitrogen cycling and the structure and metabolic properties of algal mats in lakes and streams of southern Victoria Land [K081_1983_1986_NZ_1]
A three year study of lakes and stream of southern Victoria Land was conducted from 1983-1986. In the first season, the algal composition and physico-chemical characteristics of South Victoria Land ...


46. Antarctic Coastal Ecology [ACE]
Objectives: ??? To assess the structure and functioning of the Antarctic coastal ecosystem and the relationships between marine and terrestrial biota. ??? To assess the origin of organic ...


47. Antarctic nonmarine aquatic ecosystems as global change sensors [CNDA-ES_LIMNOPOLAR_META_BAS017]
In English: This project is aimed to achieve a higher knowledge of the limnetic systems in Polar latitudes. Particularly, it promotes the accurate description the Byers Peninsula (Livingston Island), ...


48. Architectural and Physiological Limit on Carbon Balance in Plants [USDA0576]
The objective of "Architectural and Physiological Limit on Carbon Balance in Plants" is to investigate genetic differences in the architectural and physiological characteristics known to influence ...


49. Average Chlorophyll concentrations for the Southern Ocean across latitude bands 40-50 deg S, 50-60 deg S, 60 deg S-continent [SOE_chlorophyll]
This indicator is no longer maintained, and is considered OBSOLETE. INDICATOR DEFINITION Chlorophyll concentrations from Southern Ocean surface water collected at a depth of 0-7 metres, along cruise ...


50. Benthic mat biomass and productivity (photosynthesis and respiration) in Lake Vanda, Wright Valley and the role of invertebrates in carbon cycling in the lake [K081_1997_2000_NZ_1]
The 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 ...


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