Search Results - "FAHNESTOCK, J. T"

Leaf mineral nutrition of Arctic plants in response to warming and deeper snow in northern Alaska by Welker, J. M., Fahnestock, J. T., Sullivan, P. F., Chimner, R. A.

“…Articulating the consequences of global climate change on terrestrial ecosystem biogeochemistry is a critical component of Arctic system studies. Leaf mineral…”
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Annual CO2 flux in dry and moist arctic tundra : Field responses to increases in summer temperatures and winter snow depth by WELKER, J. M, FAHNESTOCK, J. T, JONES, M. H

“…Welker et al examined the annual exchange of carbon dioxide between the atmosphere and moist tussock and dry heath tundra ecosystems under ambient field…”
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Long-term experimental manipulation of winter snow regime and summer temperature in arctic and alpine tundra by Walker, M. D., Walker, D. A., Welker, J. M., Arft, A. M., Bardsley, T., Brooks, P. D., Fahnestock, J. T., Jones, M. H., Losleben, M., Parsons, A. N., Seastedt, T. R., Turner, P. L.

“…Three 60 m long, 2·8 m high snowfences have been erected to study long‐term effects of changing winter snow conditions on arctic and alpine tundra. This paper…”
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Ecological Significance of Litter Redistribution by Wind and Snow in Arctic Landscapes by Fahnestock, J. T., Povirk, K. L., Welker, J. M.

“…During winter in the Arctic, plant litter is scoured from exposed hills and ridges by wind and snow and is redistributed to other portions of the landscape…”
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Winter and early spring CO2 efflux from tundra communities of northern Alaska by Fahnestock, J. T., Jones, M. H., Brooks, P. D., Walker, D. A., Welker, J. M.

“…Carbon dioxide concentrations through snow were measured in different arctic tundra communities on the North Slope of Alaska during winter and early spring of…”
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Landscape Patterns in Soil-Plant Water Relations and Primary Production in Tallgrass Prairie by Knapp, A. K., Fahnestock, J. T., Hamburg, S. P., Statland, L. B., Seastedt, T. R., Schimel, D. S.

“…Landscape variation in soil water relations, leaf xylem pressure potential (@?) and leaf-level net photosynthesis (A) in Andropogon gerardii, and net primary…”
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Wintertime CO2 efflux from Arctic soils: Implications for annual carbon budgets by Fahnestock, Jace T., Jones, Michael H., Welker, Jeffrey M.

“…Estimates of annual carbon loss from arctic tundra ecosystems are based nearly entirely on measurements taken during the growing season in part because of…”
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Water Relations and Growth of Tallgrass Prairie Forbs in Response to Selective Grass Herbivory by Bison by Fahnestock, Jace T., Knapp, Alan K.

“…The indirect effects of selective grass herbivory by bison (Bison bison) on the xylem pressure potentials (ψ) and primary production of ungrazed tallgrass…”
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Influence of plant size on the carbon and water relations of Cucurbita foetidissima HBK by Knapp, A.K, Fahnestock, J.T

“…Plant size varies by two orders of magnitude within populations of Cucurbita foetidissima HBK. a perennial, prostrate vine of deserts and grasslands in the…”
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Early and Late Winter CO2 Efflux from Arctic Tundra in the Kuparuk River Watershed, Alaska, U.S.A by Jones, M. H., Fahnestock, J. T., Welker, J. M.

“…Large amounts of soil carbon and sensitivity of arctic ecosystems to climate change is leading to increased interest in the spatial and temporal variability of…”
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CO2 Flux in Arctic and Alpine Dry Tundra: Comparative Field Responses under Ambient and Experimentally Warmed Conditions by Welker, J. M., Brown, K. B., Fahnestock, J. T.

“…We compared growing season CO2 flux patterns between botanically similar arctic and alpine dry tundra ecosystems in Alaska and Colorado under ambient and…”
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Effects of ungulates and prairie dogs on seed banks and vegetation in a North American mixed-grass prairie by Fahnestock, J.T, Larson, D.L, Plumb, G.E, Detling, J.K

“…The relationship between vegetation cover and soil seed banks was studied in five different ungulate herbivore-prairie dog treatment combinations at three…”
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The Influence of Herbivory on Plant Cover and Species Composition in the Pryor Mountain Wild Horse Range, USA by Fahnestock, Jace T., Detling, James K.

“…We investigated the effects of short- and long-term ungulate grazing on plant species cover and composition in arid lowland and more mesic upland communities…”
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A Note on Summer CO2 Flux, Soil Organic Matter, and Microbial Biomass from Different High Arctic Ecosystem Types in Northwestern Greenland by Jones, M. H., Fahnestock, J. T., Stahl, P. D., Welker, J. M.

“…We measured CO2 flux, soil organic matter, and soil microbial biomass carbon in six high arctic tundra communities near Thule, Greenland, in July 1997,…”
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Plant Responses to Selective Grazing by Bison: Interactions between Light, Herbivory and Water Stress by Fahnestock, Jace T., Knapp, Alan K.

“…Two abundant tallgrass prairie forb species, Ambrosia psilostachya and Vernonia baldwinii, are commonly found intact in patches where the grasses have been…”
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Ecological significance of litter redistribution by wind and snow in arctic landscapes by Fahnestock, J. T., Povirk, K. L., Welker, J. M.

“…During winter in the Arctic, plant litter is scoured from exposed hills and ridges by wind and snow and is redistributed to other portions of the landscape…”
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Carbon dioxide fluxes in moist and dry arctic tundra during the snow-free season: responses to increases in summer temperature and winter snow accumulation by Jones, M.H. (The Ohio State University, Columbus, OH.), Fahnestock, J.T, Walker, D.A, Walker, M.D, Welker, J.M

“…Climate-induced environmental changes are likely to have pronounced impacts on CO2flux patterns in arctic ecosystems. We initiated a long-term experiment in…”
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CO₂ exchange in three Canadian High Arctic ecosystems: response to long-term experimental warming by Welker, J.M, Fahnestock, J.T, Henry, G.H.R, O'Dea, K.W, Chimner, R.A

“…Carbon dioxide exchange, soil C and N, leaf mineral nutrition and leaf carbon isotope discrimination (LCID‐Δ) were measured in three High Arctic tundra…”
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Estimation of Carbon Sequestration by Combining Remote Sensing and Net Ecosystem Exchange Data for Northern Mixed-Grass Prairie and Sagebrush-Steppe Ecosystems by Hunt, E. Raymond Jr, Kelly, Robert D, Smith, William K, Fahnestock, Jace T, Welker, Jeffrey M, Reiners, William A

“…Carbon sequestration was estimated a northern mixed-grass prairie site and a sagebrush-steppe site in southeastern Wyoming using an approach that integrates…”
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Tundra CO sub(2) fluxes in response to experimental warming across latitudinal and moisture gradients by Oberbauer, S F, Tweedie, CE, Welker, J M, Fahnestock, J T, Henry, GHR, Webber, P J, Hollister, R D, Walker, MD, Kuchy, A, Elmore, E, Starr, G

“…Climate warming is expected to differentially affect CO sub(2) exchange of the diverse ecosystems in the Arctic. Quantifying responses of CO sub(2) exchange to…”
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