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Keyword: Arizona

Forest inventory and analysis tree-ring data archive and analysis

Projects Posted on: January 22, 2015
The Interior West Forest Inventory and Analysis (FIA) Program collects increment cores as part of regular monitoring. Ring-widths from these increment cores are being digitized and assembled into data products for biogeographical or climatological analyses. 

The hidden treasures of long-term paired watershed monitoring in the forests and grasslands of Arizona, USA

Publications Posted on: September 20, 2013
Beginning in the 1950s, researchers of the United States Department of Agriculture Forest Service established a series of paired watershed studies throughout north-central and eastern Arizona. A total of nine experimental watershed areas were established in the pinyon-juniper and chaparral woodlands, as well as the ponderosa pine and mixed conifer forests.

Pre-wildfire fuel reduction treatments result in more resilient forest structure a decade after wildfire

Publications Posted on: September 04, 2013
Increasing size and severity of wildfires have led to an interest in the effectiveness of forest fuels treatments on reducing fire severity and post-wildfire fuels. Our objective was to contrast stand structure and surface fuel loadings on treated and untreated sites within the 2002 Rodeo-Chediski Fire area.

Pre-wildfire management treatments interact with fire severity to have lasting effects on post-wildfire vegetation response

Publications Posted on: June 20, 2013
Land managers are routinely applying fuel reduction treatments to mitigate the risk of severe, stand-replacing fire in ponderosa pine communities of the southwestern US. When these treatments are burned by wildfire they generally reduce fire severity, but less is known about how they influence post-wildfire vegetation recovery, as compared to pre-fire untreated areas.

Vulnerability of species to climate change in the Southwest: threatened, endangered, and at-risk species at Fort Huachuca, Arizona

Publications Posted on: June 07, 2013
Future climate change is anticipated to result in ecosystem changes, and consequently, many species are expected to become increasingly vulnerable to extinction. This scenario is of particular concern for threatened, endangered, and at-risk species (TER-S) or other rare species. The response of species to climate change is uncertain and will be the outcome of complex interactions and processes.

Effects of prescribed fire intervals on carbon and nitrogen in forest soils of the Mogollon Rim, Arizona

Publications Posted on: May 14, 2013
The pre-European settlement ponderosa pine forests of the Mogollon Rim consisted of open stands of uneven-aged trees with a significant grass-forb understory. Light surface-fires occurred on an average interval of 2 to 12 years in Arizona and New Mexico (Dietrich 1980). These fires consumed forest floor material, burned most of the young regeneration, and promoted growth of a dense, grassy understory.

Toward integrated research, land management, and ecosystem protection in the Malpai Borderlands: Conference summary; 6-8 January 1999; Douglas, AZ

Publications Posted on: January 18, 2013
Land management based on sound science is key to increased productivity and biological diversity along the U.S./Mexico border in southeastern Arizona and southwestern New Mexico. The USDA Forest Service's Rocky Mountain Research Station and the non-government Malpai Borderlands Group have sponsored studies and resource inventories in the region.

Multiple resource evaluations on the Beaver Creek watershed: An Annotated Bibliography (1956-1996)

Publications Posted on: December 31, 2012
The Beaver Creek experimental watershed, located in north-central Arizona, was established in 1956 in response to public concerns that the flow of streams and the amount of livestock forage on watersheds in the Salt-Verde River Basins were being reduced by increasing densities of ponderosa pine saplings and pinyon-juniper trees.

Developing a prediction model for Armillaria solidipes in Arizona

Publications Posted on: November 09, 2012
In 2010, a collaborative project was started to determine the distribution of Armillaria solidipes (= A. ostoyae) in Arizona. The methods and preliminary accomplishments of the 2010 and 2011 (ongoing) field surveys/collections are summarized. During the next phase of this project, surveys will be completed and remaining Armillaria isolates will be identified using DNA-based methods.

Vulnerability of species to climate change in the Southwest: threatened, endangered, and at-risk species at the Barry M. Goldwater Range, Arizona

Publications Posted on: July 30, 2012
Future climate change is anticipated to result in ecosystem changes, and consequently, many species are expected to become increasingly vulnerable to extinction. This scenario is of particular concern for threatened, endangered, and at-risk species (TER-S) or other rare species. The response of species to climate change is uncertain and will be the outcome of complex interactions and processes.

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