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Geography: Coconino National Forest

Spatial patterns of ponderosa pine regeneration in high-severity burn patches

Science Spotlights Posted on: August 25, 2017
Over the past three decades, wildfires in southwestern United States ponderosa pine forests have increased in size and severity, leaving large patches of tree mortality. Ponderosa pine evolved under fire regimes dominated by low- to moderate-severity wildfires, and they are poorly adapted to regenerating in large patches of high-severity fire. There is concern about these high-severity burn patches because the lack of seed-producing trees can prevent or significantly delay ponderosa pine regeneration.

Northern Goshawks: A 20 year study of ecology and habitat on

Documents and Media Posted on: July 13, 2017
Research on the Kaibab has shown that goshawks, predators of birds and small mammals, are strongly food-limited.Document Type: Other Documents

National forest climate change maps: your guide to the future

Projects Posted on: April 17, 2017
The National Forest Climate Change Maps project was developed to meet the need of National Forest managers for information on projected climate changes at a scale relevant to decision making processes, including Forest Plans.  The maps use state-of-the-art science and are available for every National Forest in the contiguous United States with relevant data coverage. Currently, the map sets include variables related to precipitation, air temperature, snow (including April 1 snow-water equivalent (SWE) and snow residence time), and stream flow.

Stream water quality after a fire

Projects Posted on: April 07, 2017
Wildland fires in the arid west create a cause for concern for many inhabitants and an area of interest for researchers. Wildfires dramatically change watersheds, yielding floods and debris flows that endanger water supplies, human lives, and valuable fish habitats.

National flow gage gap analysis

Projects Posted on: March 16, 2017
Flow gages* record discharge in streams and rivers across the U.S. but the extent and adequacy of this monitoring network relative to USFS lands has not been documented. To address that deficiency, the medium resolution National Hydrography Layer was used with gage location information from the National Water Information System to describe the monitoring network and how it has changed through time.

Mapping climate refugia to preserve cold-water biodiversity using crowd-sourced databases

Science Spotlights Posted on: September 20, 2016
Concerns about climate change effects on cold-water biodiversity sparked broad multi-agency collaborative efforts throughout the American West. U.S. Forest Service research teams led development of massive interagency databases that now enable precise mapping of critical habitats and species distributions in streams flowing through 101 National Forests.

Contemporary fire effects on birds dependant on historical fire regime

Science Spotlights Posted on: August 26, 2016
Researchers studied avian relationships with wildfire to evaluate forest fire and fuels management strategies. Specifically, they document regional differences associated with historical fire regime with implications for broadly implemented strategies aimed at reducing severe wildfire risk. The results suggest that avian-fire relationships differ regionally, and therefore the best management practices for conserving or restoring avian diversity likely differ with historical fire regime.

Tree regeneration following severe wildfire in southwestern and southern Rocky Mountain ponderosa pine forests

Projects Posted on: August 24, 2016
Wildfire has long been an important and complex disturbance agent in forests dominated by ponderosa pine in the western United States. However, many recent fires have burned with increased severity across large, contiguous areas, resulting in vast expanses with no surviving overstory trees. Researchers are looking at regeneration rates inponderosa pine forests after high-severity fires and examining the spatial patterns and environmental conditions in affected areas to help managers anticipate natural recovery and plan for post-fire management activities.

Long-term thinning alters ponderosa pine reproduction in northern Arizona

Science Spotlights Posted on: August 17, 2016
Building upon existing long-term studies in the Taylor Woods of the Fort Valley Experimental Forest, this study tested the relationship between overstory density and seedling survival in ponderosa pine forests. A long term experiment in northern Arizona was used to investigate the impacts of repeated stand thinning. This study provides valuable information that will guide forest managers in incorporating regeneration goals into forest managment plans.

Ecology of a threatened, single mountain endemic plant species, Packera franciscana (San Francisco Peaks ragwort)

Projects Posted on: August 16, 2016
Plants are a vital component of biodiversity but are facing a high rate of extinction worldwide. This research investigated plant density of a regionally rare threatened species, Packera franciscana, in order to detect current population size trends as well as establish a baseline to detect future climate change effects. Research on population stability and flowering or fruiting rates is critically important to the recovery and long-term management of P. franciscana.