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Keyword: wildfire effects

Fire and floods: The recovery of headwater stream systems following high-severity wildfire

Publications Posted on: September 10, 2019
This study examined the recovery of both physical and biotic characteristics of small (3-) and phosphate (PO43-), within impacted streams are still evident. Increases in summer stream temperatures due to the loss of streamside canopy cover continue to have an adverse affect on salmonid habitat.

Costs and benefits of multiple data sources in monitoring programs

Science Spotlights Posted on: September 04, 2019
Model development combining multiple data sources to leverage data source strengths and for improved parameter precision has increased, but with limited discussion on precision gain versus effort. Some data sources take more effort than others, thus knowing how much improvement is gained with these monitoring metrics is important for allocating samples on the landscape. Our framework allows research and monitoring programs to evaluate optimal use of limited funds when multiple data sources are available within the study design phase to meet study objectives.

Precision gain versus effort with joint models using detection/non‐detection and banding data

Publications Posted on: May 30, 2019
Capture-recapture techniques provide valuable information, but are often more cost-prohibitive at large spatial and temporal scales than less‐intensive sampling techniques. Model development combining multiple data sources to leverage data source strengths and for improved parameter precision has increased, but with limited discussion on precision gain versus effort.

Severe wildfire has long-term consequences for stream water quality

Science Spotlights Posted on: September 24, 2018
Severe wildfires remove vegetation and organic soil layers and expose watersheds to erosion which can transport large quantities of soil and ash to nearby rivers and streams. But once the burned areas have stabilized, do severe wildfires have any longer-lasting effects on watersheds or water quality? This study follows the Hayman Fire, 2002, Colorado, and shows that yes, there are long-term effects.

Mixed-severity fire fosters heterogeneous spatial patterns of conifer regeneration in a dry conifer forest

Publications Posted on: March 22, 2018
We examined spatial patterns of post-fire regenerating conifers in a Colorado, USA, dry conifer forest 11-12 years following the reintroduction of mixed-severity fire. We mapped and measured all post-fire regenerating conifers, as well as all other post-fire regenerating trees and all residual (i.e., surviving) trees, in three 4-ha plots following the 2002 Hayman Fire.

Fire research of the Southwest Watershed Science Team

Pages Posted on: December 27, 2016
This web site displays some of the past and current fire-related activities of the Southwest Watershed Science Team of the RMRS Air, Water, Aquatic Ecosystems Program.

Effects of wildfire severity on small mammals in northern Arizona ponderosa pine forests

Publications Posted on: May 12, 2016
We examined effects of a varied-severity wildfire on the community structure of small mammals and populations of the 2 most abundant species, the deer mouse (Peromyscus maniculatus) and the gray-collared chipmunk (Tamias cinereicollis), in northern Arizona ponderosa pine (Pinus ponderosa) forests. We examined 2 fire severities and compared them to unburned controls.

Ecology of Mexican spotted owls in the Sacramento Mountains, New Mexico

Science Spotlights Posted on: May 20, 2015
RMRS scientists recently completed a 10 year study of a population of threatened Mexican spotted owls (Strix occidentalis lucida) in the Sacramento Mountains, New Mexico. This study evaluated demography, habitat use, and diet composition of spotted owls, as well as forest structure characteristic of owl habitat. We determined that most owl nests are located in wet mixed-conifer forests not greatly in need of ecological restoration.

Relative abundance of small mammals in nest core areas and burned wintering areas of Mexican spotted owls in the Sacramento Mountains, New Mexico

Publications Posted on: January 26, 2014
Mexican Spotted Owls (Strix occidentalis lucida) are common in older forests within their range but also persist in many areas burned by wildfire and may selectively forage in these areas. One hypothesis explaining this pattern postulates that prey abundance increases in burned areas following wildfire.

The influence of wildfire extent and severity on streamwater chemistry, sediment and temperature following the Hayman Fire, Colorado

Publications Posted on: June 27, 2011
The 2002 Hayman Fire was the largest fire in recent Colorado history (558 km2). The extent of high severity combustion and possible effects on Denver's water supply focussed public attention on the effects of wildfire on water quality.Wemonitored stream chemistry, temperature and sediment before the fire and at monthly intervals for 5 years after the fire.

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