IAI-Data-CRN_012_Yahdjian_drought: Drought effects on ecosystem functioning in a semiarid grass-shrub steppe South of Argentina
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资源简介：
We studied drought effects on ecosystem functioning in a semiarid
grass-shrub steppe South of Argentina. We designed a 2-year rainfall
manipulation experiment where we decreased water input with rainout
shelters during two consecutive years, which included 3 levels of
rainfall interception (30%, 55%, and 80%) and control. We estimated
drought effects on volumetric and gravimetric soil water content, on
litter decomposition of a dominant grass, and on inorganic nitrogen
content and N mineralization process. We also measured drought effects
on leaf elongation and tiller production of a dominant grass, leaf
water potential of grasses and shrubs, and drought effects on percent
canopy cover. This data was collected between May 1999 and May 2001 in
field expeditions to Rio Mayo experimental site, Chubut,
Argentina. This data was obtained for project CRN12, which has
Dr. Osvaldo E. Sala as PI.We studied drought effects on ecosystem
functioning in a semiarid grass-shrub steppe South of Argentina. We
designed a 2-year rainfall manipulation experiment where we decreased
water input with rainout shelters during two consecutive years, which
included 3 levels of rainfall interception (30%, 55%, and 80%) and
control. We estimated drought effects on volumetric and gravimetric
soil water content, on litter decomposition of a dominant grass, and
on inorganic nitrogen content and N mineralization process. We also
measured drought effects on leaf elongation and tiller production of a
dominant grass, leaf water potential of grasses and shrubs, and
drought effects on percent canopy cover. This data was collected
between May 1999 and May 2001 in field expeditions to Rio Mayo
experimental site, Chubut, Argentina. This data was obtained for
project CRN12 (The Role of Biodiversity and Climate in the Functioning
of Ecosystems: A Comparative Study or Grasslands, Savannas, and
Forests), which has Dr. Osvaldo E. Sala as PI.
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SCIOPS
