Filters: Tags: Prescribed burning (X)3 results (60ms)
Does fall prescribed burning Artemisia tridentata steppe promote invasion or resistance to invasion after a recovery period?
Artemisia tridentata ssp. wyomingensis (Beetle & A. Young) S.L. Welsh-bunchgrass communities were used to analyze the influence of disturbances on invasibility after a recovery period. These communities evolved with periodic fires shifting dominance from shrubs to herbaceous species. However, fire can facilitate Bromus tectorum L. invasion of these plant communities. We evaluated the invasibility of A. tridentata ssp. wyomingensis-bunchgrass communities 4 years after prescribed fall burning at six sites by comparing burned to unburned (control) communities. These communities did not have B. tectorum present prior to introduction. B. tectorum was introduced at 1, 10, 100, 1000, and 10,000 seeds m?2 in burned and...
Effects of spring prescribed burning and wildfires on watershed nitrogen dynamics of central Idaho headwater areas
Conclusions: Prescribed burns did not supply the stream ecosystem with potentially important nutrient pulses that are often observed after wildfires. Prescribing higher severity burns to more closely mimic wildfires would enhance N cycling in productivity in N-limited headwater watersheds. Thresholds/Learnings: Synopsis: This study aimed to compare the short-term effects of spring prescribed burns and wildfires on Nitrogen cycling dynamics in headwater watersheds of central Idaho. Fire affected N dynamics in both terrestrial and aquatic components of the watershed ecosystem after wildfires but were limited to the terrestrial ecosystem after prescribed burns. Streamwater NO3 concentrations were affected significantly...
Decision Support Tools for Adaptive Management Projects in Prairie and Wetland Habitats on National Wildlife Refuges and Wetland Management Districts in USFWS Regions 3 and 6
The Invasion of native communities by cool-season introduced grasses, especially smooth brome and Kentucky bluegrass in upland prairies, reed canary grass in wetlands, is on one of the most important management issues on U.S. Fish and Wildlife Service (Service)-owned lands. Two adaptive management projects, the Native Prairie and Reed Canary Grass Adaptive Management Projects were funded by USGS to examine restoration efforts on NWRs and WMDs in USFWS Regions 3 and 6. This project will support the completion of two decision support tools that are essential to long-term resource management success.