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Consequences of More Extreme Precipitation Regimes for Terrestrial Ecosystems
ABSTRACT Amplification of the hydrological cycle as a consequence of global warming is forecast to lead to more extreme intra-annual precipitation regimes characterized by larger rainfall events andExpand
Forest responses to increasing aridity and warmth in the southwestern United States
TLDR
Comparing annual tree-ring width data from 1,097 populations in the coterminous United States to climate data and evaluating site-specific tree responses to climate variations throughout the 20th century suggests that southwestern trees will experience substantially reduced growth during this century. Expand
Tree-ring C-H-O isotope variability and sampling.
  • S. Leavitt
  • Mathematics, Medicine
  • The Science of the total environment
  • 15 October 2010
TLDR
A state-of-knowledge summary of the influence of "juvenile" isotope effects, ageing effects, and genetic effects, as well as the interchangeability of species, choice of ring segment to analyze (whole ring, earlywood or latewood), and the option of sample pooling is provided. Expand
Radiocarbon Dating for Determination of Soil Organic Matter Pool Sizes and Dynamics
The size and turnover rate of the resistant soil organic matter (SOM) fractions were measured by 14 C dating and 13 C/ 12 C measurements. This involved soils archived in 1948, and recent samples,Expand
Dynamics of resistant soil carbon of Midwestern agricultural soils measured by naturally occurring 14C abundance
Information on the mean residence time (MRT) of soil organic carbon (SOC) on different soil types and management regimes is required for pedo-geological, agronomic, ecological and global changeExpand
VARIATIONS OF WOOD δ13C AND WATER‐USE EFFICIENCY OF ABIES ALBA DURING THE LAST CENTURY
TLDR
The intrinsic water-use efficiency (A/gw, the ratio of CO2 assimilation rate to stomatal conductance for water vapor), integrated over the year, has increased by 30% between the 1930s and the 1980s, consistent with the physiological effects of increasing CO2 concentrations as observed in controlled experiments on young seedlings. Expand
Estimation of slow- and fast-cycling soil organic carbon pools from 6N HCl hydrolysis.
Acid hydrolysis is used to fractionate the soil organic carbon pool into relatively slow- and fast-cycling compartments on soils from Arizona, the Great Plains states and Michigan collected forExpand
Stable‐Carbon Isotope Variability in Tree Foliage and Wood
TLDR
Variation of stable-carbon isotope ratios (13C/'2C) in trees of genera Juniperus and Pinus under field conditions is documents to help guide sampling in tracer-type studies with stable- carbon isotopes and aid in the interpretation of isotopic results from such studies. Expand
Modelling carbon isotope fractionation in tree rings based on effective evapotranspiration and soil water status
Environmental influences on carbon isotope fractionation in tree rings require further elucidation in order to use this parameter as a biological marker of climatic variations. δ13C values inExpand
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