Dendroclimatic Changes in Semiarid America

Experimental Dendroclimatic Reconstruction of the Southern Oscillation

Exactly dated tree-ring chronologies from ENSO-sensitive regions in subtropical North America and Indonesia together register the strongest ENSO signal yet detected in tree-ring data worldwide and have been used to reconstruct the winter Southern Oscillation index (SOI) from 1706 to 1977. This reconstruction explains 53% of the variance in the instrumental winter SOI during the boreal cool seas...

Types of German Surname Changes in America

ur names are very much part of what defines us as a person. The given name identifies us as individuals within the group in which we live and function. Normally, we are the only person identified by that particular name within the group. Most of us have given names that our parents liked for some reason or other, selected in a rather accidental fashion. Our surname is, of course, anything but a...

Response of the soil microbial community to changes in precipitation in a semiarid ecosystem.

Microbial communities regulate many belowground carbon cycling processes; thus, the impact of climate change on the structure and function of soil microbial communities could, in turn, impact the release or storage of carbon in soils. Here we used a large-scale precipitation manipulation (+18%, -50%, or ambient) in a piñon-juniper woodland (Pinus edulis-Juniperus monosperma) to investigate how ...

Management in Semiarid Mediterranean Agroecosystems

Nonlinear responses of soil respiration to precipitation changes in a semiarid temperate steppe

Extreme precipitation events are predicted to occur more frequently and will have significant influences on terrestrial ecosystem carbon (C) cycling in the future. However, response patterns of soil respiration to precipitation changes remain uncertain in terrestrial ecosystems. A field experiment with seven precipitation treatments (i.e. from -60% to +60% of ambient precipitation to form a dro...