Skip to main content
USGS - science for a changing world
Advanced Search

Filters: Tags: invasives (X)

30 results (75ms)   

Filters
Date Range
Extensions
Types
Contacts
Categories
Tag Types
Tag Schemes
View Results as: JSON ATOM CSV
thumbnail
Riparian 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 riparian species at that location. A cell value of 0 indicates the absence of riparian invasives at that location. This dataset was created by combining the following classes from LANDFIRE EVT V1.1, NatureServe Landcover, Jarnevich, et al., and Tamarisk 1965 line. LANDFIRE EVT V1.1 2180: Introduced Riparian Vegetation NatureServe Landcover 8480: Introduced Riparian Vegetation Jarnevich, et al (modeled Tamarisk) Thresholded at 0.6 Tamarisk 1965 line (http://www.tamariskmap.org) All line features...
thumbnail
This map was created to help assess impacts on nonindigenous aquatic species distributions due to flooding associated with Hurricane Maria. 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...
Bromus tectorum (cheatgrass) has widely invaded the Great Basin, U.S.A. The sporadic natural phenomenon of complete stand failure (‘die- off’) of this invader may present opportunities to restore native plants. A recent die-off in Nevada was precision-planted with seeds of the native grasses Poa secunda (Sandberg bluegrass) and Elymus elymoides (bottlebrush squirreltail), of both local and nonlocal origin, to ask: 1) Can native species be restored in recent B. tectorum die-offs? And 2) Do local and nonlocal seeds differ in performance? Additionally, we asked how litter removal and water addition affected responses. Although emergence and growth of native seeds was lower in die-off than control plots early in year...
thumbnail
FY2013Cheatgrass die-offs are unexplained instances of stand failure observed in areas of Nevada and Utah, where cheatgrass fails to grow even though it has been a dominant component of plant communities in the past. The goals of this project are to:1) provide information on the size and extent of historic (1985 - 2012) die-offs in the Winnemucca area using satellite imagery, and 2) determine if die-offs are restoration opportunities by planting and monitoring local and commercially available native grasses in die-off areas.Support is requested to fund monitoring of the restoration project through a second growing season and to develop predictive spatial models of die-off from analysis of satellite imagery and GIS...
thumbnail
This map was created to help assess impacts on nonindigenous aquatic species distributions due to flooding associated with Hurricane Irma. 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...
The phenomenon of cheatgrass die-off is a common and naturally- occurring stand failure that can eliminate the presence of this annual grass for a year or more, affecting tens to hundreds of thousands of acres in some years. We designed a study to determine if the temporary lack of cheatgrass caused by die-offs is a restoration opportunity. We seeded native perennial species at three die-offs in the Winnemucca, Nevada area. Native grass establishment in die-offs was almost three times higher in the first season at all sites, relative to adjacent areas without die-off. In the second season, establishment was five times higher in the die-off at two sites, and plants were notably larger in the die-off at the third...
thumbnail
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.
thumbnail
Over the past century, Hawaiˈi has experienced a pronounced decline in precipitation and stream flow and a number of severe droughts. These changes can have wide-reaching implications, affecting the water supply, native vegetation and wildlife, wildfire patterns, and the spread of invasive species. Several climate-related factors are influencing Hawaiˈi’s landscapes and contributing to these changes. These include climate change, climate variability, and drought (referred to collectively as CCVD). Climate variability describes how the climate fluctuates on a yearly basis around average values, while climate change describes patterns of long-term continuous change in the average. While it is understood that CCVD...
On July 14, 2015 speaker Owen Baughman presented on his work in restoring areas of cheatgrass die-off.The phenomenon of complete stand failure (or die-off) of cheatgrass results in the absence of this invasive grass from the invaded site for one or more growing seasons. Our work seeks to determine if this phenomenon represents an opportunity for restoring native species. Results from two experiments at four Northern Nevada sites over three years are demonstrating that seeded native grasses can have higher success in recent die-offs when compared to seedings in sites that did not die-off. These promising findings indicate that restoring native diversity in highly-invaded systems can be facilitated by targeting die-offs...
thumbnail
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.
thumbnail
This feature class contains known invasive plant species. This dataset represents the inventory mapping results of invasive plant species for the San Diego County. SANDAG's contractor, AECOM, completed an inventory mapping of invasive plant species. SANDAG will keep updating the invasive species layer when the new information is available.Â
thumbnail
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.
thumbnail
FY2014The project team surveyed land managers working on invasive weeds in the west. These surveys provided information for the Western Association of Fish and Wildlife (WAFWA) Wildfire and Invasive Species Initiative Working Group. The survey results and other findings were used to inform a report titled Invasive Plant Management and Greater Sage-Grouse Conservation,published last spring.
thumbnail
Mitigation of ecological damage caused by rangeland wildfires has historically been an issue restricted to the western United States. It has focused on conservation of ecosystem function through reducing soil erosion and spread of invasive plants. Effectiveness of mitigation treatments has been debated recently. We searched for literature on postfire seeding of rangelands worldwide. Literature databases searched included SCOPUS, Dissertation Abstracts, Forest Science, Tree search, Web of Science, Google Scholar, and science.gov. Search terms within publications included fire or wildfire in combination with seeding, rehabilitation, restoration, revegetation, stabilization, chaining, disking, drilling, invasives,...
thumbnail
This dataset is a compilation of Flathead Catfish occurrence data from museums, literature, and state agencies. Sources include museums that are members of the Global Biodiversity Information Facility, VertNet, FishNet2, state fish books, state reports, state stocking data for states surrounding the Great Lakes, and historical literature.
thumbnail
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.
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...
thumbnail
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...
Tags: drecp, invasives
thumbnail
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.


map background search result map search result map Nonindigenous Aquatic Species Database Asian Tiger Shrimp 2012 Invasive Plant Species, San Diego County Uncharacteristic Exotic Vegetation (LANDFIRE Succession Classes, Class 7), DRECP Riparian Invasive Species (LANDFIRE EVT V1.1, NatureServe Landcover, Jarnevich, Tamarisk 1965 line), DRECP Data Nonindigenous Aquatic Species Database Understanding the Causes and Consequences of Cheatgrass Die-offs in the Great Basin Influences of Climate Change, Climate Variability, and Drought on Human Communities and Ecosystems in Hawaiˈi Invasive Species Management Contributions to Greater Sage-grouse Conservation West-wide. Mechanisms of aquatic species invasions across the South Atlantic Landscape Conservation Cooperative region Assessment of ACK55 as a Biocontrol of Invasive Annual Grasses in Nevada Nonindigenous aquatic species and potential spread after Hurricane Maria Nonindigenous aquatic species and potential spread after Hurricane Irma Flathead catfish occurrence data for the Great Lakes Basin 1890-2017 Assessment of ACK55 as a Biocontrol of Invasive Annual Grasses in Nevada Assessment of ACK55 as a Biocontrol of Invasive Annual Grasses in Nevada Assessment of ACK55 as a Biocontrol of Invasive Annual Grasses in Nevada 2012 Invasive Plant Species, San Diego County Nonindigenous aquatic species and potential spread after Hurricane Maria Understanding the Causes and Consequences of Cheatgrass Die-offs in the Great Basin Invasive Species Management Contributions to Greater Sage-grouse Conservation West-wide. Influences of Climate Change, Climate Variability, and Drought on Human Communities and Ecosystems in Hawaiˈi Uncharacteristic Exotic Vegetation (LANDFIRE Succession Classes, Class 7), DRECP Riparian Invasive Species (LANDFIRE EVT V1.1, NatureServe Landcover, Jarnevich, Tamarisk 1965 line), DRECP Nonindigenous aquatic species and potential spread after Hurricane Irma Flathead catfish occurrence data for the Great Lakes Basin 1890-2017 Mechanisms of aquatic species invasions across the South Atlantic Landscape Conservation Cooperative region Nonindigenous Aquatic Species Database Asian Tiger Shrimp Nonindigenous Aquatic Species Database