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United States Department of Agriculture (USDA) 2009

IMPLICATIONS OF GLOBAL CHANGE FOR SEMI-ARID RANGELANDS

Global Change Semi-Arid

United States Department of Agriculture (USDA) Research, Education & Economics Information System (REEIS)

Titre : IMPLICATIONS OF GLOBAL CHANGE FOR SEMI-ARID RANGELANDS

Identification : 5409-11000-005-01S

Pays : Etats Unis

Durée : Aug 1, 2009 à Jul 31, 2014

Domaine : Weather and Climate ; Soil, Plant, Water, Nutrient Relationships ; Rangelands and grasslands, general ; Soil

Partenaire : UNIVERSITY OF WYOMING 1000 E UNIVERSITY AVE DEPARTMENT 3434 LARAMIE,WY 82071-2000

Objectifs
Evaluate how warming and increasing atmospheric CO2 concentration affect the structure and functioning of Great Plains grasslands through their affects on primary production, N and C cycling, water relations, and plant community dynamics.

Descriptif
Stable Isotope Lab/University of Wyoming (SILUW) and ARS will collaborate in planning and conducting cooperative global change research at the High Plains Grasslands Research Station (HPGRS) to investigate how global change influences ecosystem functioning through evaluating the combined effects of rising atmospheric CO2 and temperature on C and N cycling, plant/soil water relations, weed invasions and plant community ecology. Research will be conducted under realistic field conditions in a native, semi-arid grassland in which ambient CO2 is increased from present-day levels of 390 ppm to 600 ppm and temperatures increased 1.5/3 C day/night. These altered environmental conditions are predicted to develop in Wyoming over the second half of the century.

Présentation : USDA

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