  Major Funding Sources
Plant EcologyPlant Ecology Ecosystem carbon and nitrogen pools in managed rangelandsMon, 03/26/2012 - 10:11 — gerbersl
Management of rangelands has traditionally focused on livestock/wildlife production and soil/water conservation. However, with the emergence of ‘global change’ issues in recent years, there is a pressing need to improve our understanding of how rangelands and rangeland management practices influence carbon sequestration. Our goal is to link field measurements and modeling approaches to reconstruct and project the influence of rangeland management practices on the size and spatial distribution of ecosystem C and N pools.
Project P. I(s):
Dr. Steven R. Archer
Project Co. P.I(s):
Dr. Mitchel P. McClaran
Project Home institution or organization:
The University of Arizona
Project Home College:
College of Agriculture and Life Sciences University of Arizona Project Departments, Institutes and/or Centers Involved in Project:
School of Natural Resources and the Environment
Project Sponsors and/or Funding Source(s):
USDA-NRI Managed Ecosystems
Project Region:
Americas
Project Region:
Americas: North America
Project Country/Countries:
United States
Project Status:
Active
Type of Project or Activity:
Research
Project Website:
http://ag.arizona.edu/research/archer/project3.html Woody plant encroachment into desert grasslandsMon, 03/26/2012 - 10:00 — gerbersl
With this research, we seek to improve our mechanistic understanding of woody plant recruitment into grasslands, ascertain how geological landscape factors constrain local abundance and determine with more confidence which species characteristics are reliably associated with encroachment potential. Thus, the study will provide guidelines for the identification and management of potential problem species and provide information for the development of recruitment models, filling an important need for modeling vegetation dynamics.
Project P. I(s):
Dr. Steven R. Archer
Project Co. P.I(s):
Dr. Larry D. Howery
Project Home institution or organization:
The University of Arizona
Project Home College:
College of Agriculture and Life Sciences University of Arizona Project Departments, Institutes and/or Centers Involved in Project:
School of Natural Resources and the Environment
Project Sponsors and/or Funding Source(s):
NSF Ecology Program
Project Region:
Americas
Project Region:
Americas: North America
Project Status:
Active
Type of Project or Activity:
Research
Project Website:
http://ag.arizona.edu/research/archer/project1.html Dr. Steven R. ArcherMon, 03/26/2012 - 09:49 — gerbersl
Position Title(s):
Professor
College:
College of Agriculture and Life Sciences
Department or Unit:
School of Natural Resources and the Environment
Mailing Address:
Biological Sciences East 316 Tucson Arizona 85721
Phone:
520-626-8791
Email:
sarcher@ag.arizona.edu
Website:
http://www.snr.arizona.edu/people/archer
Geographical Regions of Interest:
World
Brief Biography:
Steve Archer’s research focuses on interactions between grasses and woody plants in relation to soils, climate and disturbance. He uses population, transition probability and dynamic ecosystem simulation models in conjunction with remote sensing, GIS, dendrochronology and stable isotope chemistry to reconstruct vegetation history and to examine potential, impending changes. Field and laboratory experiments on the population biology of grasses and shrub growth forms are emphasized in the context of landscape ecology, succession, and historical land-use practices.
Publications:
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