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Person

Diane L Larson

Research Wildlife Biologist
Email: dlarson@usgs.gov
Office Phone: 701-253-5500
ORCID: 0000-0001-5202-0634

Location
1561 Lindig St.
St. Paul , MN 55108
US
Geographic distribution data were collected based on county level occurrences (or converted from point occurrences to county level occurrences) within the five focal states (Minnesota, North Dakota, South Dakota, Nebraska & Iowa) and each U.S. state or Canadian province bordering those focal states (Wisconsin, Illinois, Missouri, Kansas, Wyoming, & Montana in the USA and Saskatchewan, Ontario & Manitoba in Canada).
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This data release contains three data sets. The data were collected in 1996 at the South Unit of Theodore Roosevelt National Park, ND, USA. The main data set comprises the list of plant species observed and includes the transect, plot number, plot size, and vegetation type where each species was found. A second data set has the locations of the transects, along with their IDs which can be linked to the species list. The final data set is a list of nomenclature updates and species that had duplicates in ITIS, along with the currently accepted scientific names of these species.
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Ecological effects of invasive species
Leafy spurge (Euphorbia esula L.; Euphorbiaceae) is a noxious weed accidentally introduced from Eurasia into North America in the late 1800s and early 1900s via multiple shipments of contaminated crop seed. It has spread extensively throughout pasture, rangeland, and natural areas in the Great Plains, inflicting substantial economic and ecological damage. Leafy spurge is unpalatable to most domestic and native ungulates and thus reduces carrying capacity of both rangeland and natural areas. In the four-state region including Montana, North Dakota, South Dakota and Wyoming, costs due to control and reduced forage availability were estimated at $144 million annually. Department of Interior land managers will treat...
Categories: Project
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Developing a framework for evaluating tallgrass prairie reconstruction methods and management
The goal of this project is to improve the practice of prairie reconstruction by developing criteria by which success can be measured and related to reconstruction methodology. To achieve this goal, two teams of two botanists will document plant species present on previously reconstructed prairies at two national wildlife refuges, Neal Smith in Iowa and Glacial Ridge in Minnesota. This information will be used to evaluate the methods used on those reconstructions to determine which methods result in relatively greater presence of desirable planted prairie species and less invasion by exotic species. Field work is slated to begin in 2015.
Categories: Project
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This data set consists of data collected during 2005-2007, 2010, and 2015 at Neal Smith National Wildlife Refuge in Iowa, USA that were used in the analysis in support of the article titled "Toward improving pollinator habitat: Reconstructing prairies with high forb diversity," which has been submitted to Natural Areas Journal. We compared pollinator habitat, in terms of planted forb richness, cover, and phenology, cover of planted grasses, and persistence of exotic species 10-years post-planting of reconstructions with 58 species (extra-high), 34 species (high), 20 species (medium) and 10 species (low) planted at the same time using the same fields, methods, and overall seeding rate. Twelve replicates of three...
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