Filters: Tags: artemisia tridentata (X) > partyWithName: Landscape Conservation Cooperative Network (X)
5 results (11ms)
Filters
Date Range
Extensions Types Contacts
Categories Tag Types Tag Schemes |
Rising temperatures have begun to shift flowering time, but it is unclear whether phenotypic plasticity canaccommodate projected temperature change for this century. Evaluating clines in phenological traits and the extentand variation in plasticity can provide key information on assessing risk of maladaptation and developing strategiesto mitigate climate change. In this study, flower phenology was examined in 52 populations of big sagebrush (Artemi-sia tridentata) growing in three common gardens. Flowering date (anthesis) varied 91 days from late July to lateNovember among gardens. Mixed-effects modeling explained 79% of variation in flowering date, of which 46% couldbe assigned to plasticity and genetic variation...
Categories: Data,
Publication;
Types: Citation;
Tags: Academics & scientific researchers,
Artemisia tridentata,
California,
Completed,
EARTH SCIENCE > LAND SURFACE > LANDSCAPE,
This report provides a strategic approach developed by a Western Association of Fish and Wildlife Agencies interagency working group for conservation of sagebrush ecosystems, Greater sage-grouse, and Gunnison sage-grouse. It uses information on (1) factors that influence sagebrush ecosystem resilience to disturbance and resistance to nonnative invasive annual grasses and (2) distribution and relative abundance of sage-grouse populations to address persistent ecosystem threats, such as invasive annual grasses and wildfire, and land use and development threats, such as oil and gas development and cropland conversion, to develop effective management strategies. A sage-grouse habitat matrix links relative resilience...
Categories: Data;
Tags: Colorado,
Completed,
EARTH SCIENCE > LAND SURFACE > LANDSCAPE,
Federal resource managers,
GRSG,
On September 26, Jeanne Chambers, U.S. Forest Service Rocky Mountain Research Station, and Steve Hanser, U.S. Geological Survey, discussed the tools and methods developed as part of the Science Framework for the Conservation and Restoration Strategy of Sec. Order 3336.Co-hosted by the Great Basin, Great Northern, Plains and Prairie Potholes and Southern Rockies Landscape Conservation Cooperatives Department of the Interior Secretary Order 3336 called for the development of a comprehensive, science-based strategy to reduce the threat of large-scale rangeland fire to greater sage-grouse habitat and the sagebrush steppe ecosystem. The four Landscape Conservation Cooperatives (LCCs) of the sagebrush steppe are pleased...
Categories: Data;
Tags: Colorado,
Completed,
EARTH SCIENCE > LAND SURFACE > LANDSCAPE,
Federal resource managers,
GRSG,
The sagebrush steppe is a patchwork of species and subspecies occupying distinctenvironmental niches across the intermountain regions of western North America. These ecosystems facedegradation from disturbances and exotic weeds. Using sagebrush seed that is matched to its appropriateniche is a critical component to successful restoration, improving habitat for the threatened greater sage-grouse and other species. The need for restoration is greatest in basin habitats composed of two subspecies:diploid basin big sagebrush (A. tridentatasubsp.tridentata) and tetraploid Wyoming big sagebrush (subsp.wyomingensis). In this study we assess seed weights across five subspecies-cytotype groups of bigsagebrush and examine...
Categories: Data,
Publication;
Types: Citation;
Tags: Academics & scientific researchers,
Artemisia tridentata,
California,
Completed,
EARTH SCIENCE > LAND SURFACE > LANDSCAPE,
Precipitation amount and seasonal timing determine the duration and distribution of water available for plant and microbial activity in the cold desert sagebrush steppe. In this study, we sought to determine if a sustained shift in the amount and timing of precipitation would affect soil microbial diversity, community composition, and soil carbon (C) storage. Field plots were irrigated (+200 mm) during the dormant or growing-season for 17 years. Microbial community responses were assessed over the course of a year at two depths (15–20 cm, 95–100 cm) by terminal restriction fragment length polymorphism (T-RFLP), along with co-occurring changes in plant cover and edaphic properties. Bacterial richness, Shannon Weaver...
Categories: Data,
Publication;
Types: Citation;
Tags: Artemisia tridentata,
California,
Cold desert,
EARTH SCIENCE > LAND SURFACE > LANDSCAPE,
Great Basin,
|