Filters: Tags: Noxious weeds (X)
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A dataset of Noxious Weed infestation inventories, treatments and monitoring activities on the San Luis Valley Public Lands in South-Central Colorado.
The Southwest Exotic Plant Mapping Program (SWEMP) is a collaborative effort between the United States Geological Survey and federal, tribal, state, county and non-governmental organization (NGO) partners in the southwest. This project is an ongoing effort to compile and distribute regional data on the occurrence of non-native invasive plants in the southwestern United States. The database represents the known sites (represented by a point location, i.e. site) of non-native invasive plant infestations within Arizona and New Mexico, and adjacent portions of California, Colorado, Nevada and Utah. These data, collected from 1911 to 2006, represent the field observations of various state, federal, tribal and county...
Categories: Data;
Types: Citation;
Tags: Alien plants,
Arizona,
California,
Colorado,
Exotic plants,
The introduction of exotic plant species into the western United States has caused substantial changes to rangeland disturbance regimes and ecosystem structure and function. For example, exotic annual grass (EAG) invasion in western rangelands has increased wildfire frequency, which greatly reduces rangeland ecosystem diversity and leads to single-species dominance in many areas. Rangeland monocultures do not provide optimal carbon sequestration and other environmental processes necessary to sustain historically normal ecosystem structure, including the ecological diversity needed to support sagebrush obligates like Greater Sagegrouse, pygmy rabbit, and pronghorn. These obligates, as well as others, require contiguous,...
Categories: Data;
Tags: Bromus japonicus,
Bromus tectorum,
California (CA),
Cheatgrass,
Colorado (CO),
Broom snakeweed (snakeweed) is an aggressive native range-weed found throughout arid and semiarid areas of the western United States, that increases following disturbances such as overgrazing, drought, or wildfire. Ecologically based strategies that include controlling snakeweed and reestablishing desirable herbaceous species are needed to restore productivity and diversity to invaded areas. The objective of this study was to compare the ability of selected introduced and native grass species and prostrate kochia (kochia) to prevent reinvasion of snakeweed, downy brome, and annual forbs following control. This field study was replicated at two sites (Howell and Nephi, Utah) within the sagebrush-steppe biome. Snakeweed...
Categories: Publication;
Types: Citation,
Journal Citation;
Tags: Agropyron cristatum,
Bassia prostrata,
Bromus tectorum,
Elymus multisetus,
Gutierrezia sarothrae,
This dataset depicts noxious weed areas on the Umpqua National Forest in Oregon. The species occupying each area are noted in the attribute table.
Tags: noxious weeds
Polygon geometry for a biological control agent treatment area. An application of a biological control. Biological control is the use of a weed's natural enemies (chiefly insects and pathogens) to reduce its population below a desired level. It can be divided into the following two approaches: inundative and classical. Inundative biological control uses mass application of an organism to attempt to eliminate a weed from an area. Like all such methods, it does not deal with the residual seed bank in the soil or prevent the weed from establishing from another source at a later date. Classical biological control uses the weed's natural enemies to establish a long-term balance between the biological control organism...
This dataset depicts invasive plant locations on the Siskiyou National Forest.
weedinfestationlocation: Polygon Feature Dataset that depicts noxious weed distribution across the western United States.
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