Filters: Tags: invasives (X)
33 results (30ms)
Filters
Date Range
Extensions Types
Contacts
Categories Tag Types
|
Invasive species distribution within the DRECP study area as represented in the LANDFIRE Succession Classes dataset; created for use in terrestrial intactness modeling. This dataset is binary. A cell value of 1 indicates the presence of one or more invasive species at that location. A value of 0 indicates the absence of invasives at that location. This dataset was created by extracting cell values of 7 (Uncharacteristic Exotic Vegetation) from the LANDFIRE Succession Classes dataset. A vegetation mask was also applied in order to ensure that data was only generated in areas outside the extent of impervious surfaces (based on NLCD Impervious Surfaces data) and within the extent of LANDFIRE EVT V1.1 vegetation...
FY2015This project assesses the efficacy of ACK55, a naturally occurring bacterium that decreases invasive annual grasses by up to 70% on test sites. Working with the USDA, USFWS and the Great Basin Institute, researchers plan to treat ten, 1-acre plots on private lands within sage-grouse Biologically Significant Areas to determine the efficacy of ACK55 in warm and dry soils.
Categories: Data,
Project;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Academics & scientific researchers,
Biocontrol,
Conservation Design,
Federal resource managers,
Great Basin,
The exotic annual grass Bromus tectorum (cheatgrass) dominates vast acreages of rangeland in the western USA, leading to increased fire frequency and ecosystem degradation that is often irreversible. Episodic regeneration failure (“die-off”) has been observed in cheatgrass monocultures and can have negative ecosystem consequences, but can also provide an opportunity for restoration of native species and ecological function within the imperiled sagebrush steppe ecosystem. Proximate causes of cheatgrass die-off are uncertain, although several taxa of fungal soil pathogens have been implicated. Die-off occurrence is stochastic and can occur in remote areas. Thus, developing remote sensing indicators that are repeatable...
Categories: Data,
Publication;
Types: Citation;
Tags: Academics & scientific researchers,
California,
Cheatgrass,
Completed,
EARTH SCIENCE > LAND SURFACE > LANDSCAPE,
Invasive species distribution within the DRECP study area; created for use in terrestrial intactness modeling. This dataset is binary. A cell value of 1 indicates the presence of one or more invasive species at that location. A value of 0 indicates the absence of invasives at that location. This dataset was created by combining the following composite datasets: Upland invasives, riparian invasives, and uncharacteristic exotic vegetation (LANDFIRE succession class 7). The following is a list of the datasets that were used in created the composites listed above: LANDFIRE EVT V1.1 2180: Introduced Riparian Vegetation 2181: Introduced Upland Vegetation-Annual Grassland 2182: Introduced Upland Vegetation-Perennial...
This presentation addressed issues confronting preservation and restoration of big sagebrush, focusing on climate, wildfire, and invasives. Preliminary and published insights on climate responses of sagebrush and implications for vulnerability assessments and post-fire restoration were described. Responses of big sagebrush and competitors such as cheatgrass to climate manipulations are providing important insight on the ways in which sagebrush may resist or respond to warming or shifts in precipitation. Big sagebrush is a remarkably diverse species, and preliminary findings from common-garden studies are suggesting how the diversity is important for its climate responses and for selection of appropriate seed sources....
Categories: Publication;
Types: Citation;
Tags: Grasslands and Plains,
Landscapes,
Northwest CASC,
climate,
invasives,
FY2015This project assesses the efficacy of ACK55, a naturally occurring bacterium that decreases invasive annual grasses by up to 70% on test sites. Working with the USDA, USFWS and the Great Basin Institute, researchers plan to treat ten, 1-acre plots on private lands within sage-grouse Biologically Significant Areas to determine the efficacy of ACK55 in warm and dry soils.
Categories: Data,
Project;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Academics & scientific researchers,
Biocontrol,
Conservation Design,
Federal resource managers,
Great Basin,
FY2015This project assesses the efficacy of ACK55, a naturally occurring bacterium that decreases invasive annual grasses by up to 70% on test sites. Working with the USDA, USFWS and the Great Basin Institute, researchers plan to treat ten, 1-acre plots on private lands within sage-grouse Biologically Significant Areas to determine the efficacy of ACK55 in warm and dry soils.
Categories: Data,
Project;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Academics & scientific researchers,
Biocontrol,
Conservation Design,
Federal resource managers,
Great Basin,
FY2015This project assesses the efficacy of ACK55, a naturally occurring bacterium that decreases invasive annual grasses by up to 70% on test sites. Working with the USDA, USFWS and the Great Basin Institute, researchers plan to treat ten, 1-acre plots on private lands within sage-grouse Biologically Significant Areas to determine the efficacy of ACK55 in warm and dry soils.
Categories: Data,
Project;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Academics & scientific researchers,
Biocontrol,
Conservation Design,
Federal resource managers,
Great Basin,
This refined map was created to help assess possible spread of nonindigenous aquatic species distributions due to flooding associated with Hurricane Harvey. Storm surge and flood events can assist expansion and dissemination of nonindigenous aquatic species through the connection of adjacent watersheds, backflow of water upstream of impoundments, increased downstream flow, and creation of freshwater bridges along coastal regions. This map will help natural resource managers determine potential new locations for individual species, or to develop a watch list of possible new species within a watershed. These data include a subset of data from the Nonindigenous Aquatic Species Database, that fall within the general...
Post-fire rehabilitation seeding in the U.S. Intermountain West, primarily conducted by the Bureau of Land Management, is designed to reduce the risk of erosion and weed invasion while increasing desirable plant cover. Seeding effectiveness is typically monitored for three years following treatment, after which a closeout report is prepared. We evaluated 220 third-year closeout reports describing 214 aerial and 113 drill seedings implemented after wildfires from 2001 through 2006. Each treatment was assigned a qualitative success rating of good, fair, poor, or failure based on information in the reports. Seeding success varied by both treatment (aerial or drill) and year. Aerial seedings were rated 13.6% good, 18.3%...
Categories: Data;
Types: Citation;
Tags: Ecology,
Land Use Change,
USGS Science Data Catalog (SDC),
chaining,
cheatgrass,
The Nonindigenous Aquatic Species Database (NAS) information resource is an established central repository for spatially referenced biogeographic accounts of introduced aquatic species. The NAS website provides scientific reports, online/real-time queries, spatial data sets, distribution maps, fact sheets, and general information.
FY2017The Integrated Rangeland Fire Management Strategy Actionable Science Plan places a high priority on assessing control measures for invasive annual grasses, which provide fuel for rangeland fire and impede restoration of desirable perennials. Weed-suppressive strains of the bacterium Psuedomonas fluoresens (P.f.) are an emerging but yet untested tool for selectively reducing these annual grasses. P.f. may suppress annuals for approximately 2-5 years, bridging the short-term action of herbicides and long-term resistance provided as native bunchgrasses recover. In 2015-2016, the USGS responded to a request from the Idaho sage grouse action group to establish a series of field-based experiments to assess the efficacy...
Categories: Data,
Project;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Academics & scientific researchers,
California,
California,
California,
Federal resource managers,
This map was created to help assess impacts on nonindigenous aquatic species distributions due to flooding associated with Hurricane Nate. Storm surge and flood events can assist expansion and distribution of nonindigenous aquatic species through the connection of adjacent watersheds, backflow of water upstream of impoundments, increased downstream flow, and creation of freshwater bridges along coastal regions. This map will help natural resource managers determine potential new locations for individual species, or to develop a watch list of potential new species within a watershed. These data include a subset of data from the Nonindigenous Aquatic Species Database, that fall within the general area of the 2017...
|
|