The University of Arizona

drought

Tree Killer

Short Description: 
Henry Adams wants to know how trees die.

Julio Betancourt receives $60,451 from the USGS-Park Oriented Biological Support (POBS) Program

Short Description: 
The project is titled, "Vegetation and Fire History of City of Rocks (CIRO) National Reserve: Relevance for Understanding the Role of Climate and Disturbance in Plant Migration in the American West"

National Parks, Monuments and Reserves in the western U.S. will be affected by plant migrations triggered by climate change, and there are many questions about mechanisms, pathways, rates and impacts of these future migrations. Useful insights can be gained from Holocene plant migrations, which are being chronicled with unprecedented detail by woodrat middens sampled along presumed, migrational pathways.

Willem van Leeuwen

Wim
Area of Expertise: 
Land Surface Phenology; Biogeography; Remote Sensing Science and Applications of Coupled Natural and Human Systems; Geospatial & Temporal Decision Support Systems and Tools for Land and Water management; Assessing Impact of Fire and Drought on Vegetation Response and Drylands around the World.
Associate Professor

Wim is an Associate Professor with joint appointments in the School of Natural Resources and the Environment - Office of Arid Lands Studies & the School of Geography and Development at the University of Arizona, Tucson, where he is teaching:


Drought & Die-off

pinyon pine die off before and after

Dr. Dave Breshears, in the School of Natural Resources and the Environment, documented massive pinyon pine die-off due to extended drought. He and his colleagues had collected a wealth of data on the woodlands for more than a decade before the massive die-off.

Short Description: 
A well-documented pinyon pine die-off sheds light on climate-induced changes to ecosystems.

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