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Filters Date Range Past year (0) Past month (0) Past week (0) Past day (0) Custom range... To   Search Contacts Erika L Geiger Christopher M Merkes U.S. Geological Survey - ScienceBase Ecosystems Upper Midwest Environmental Sciences Center More... Tag Types Theme (2) USGS Scientific Topic Keyword (1) Place (2) Harvest Set (2) Tag Schemes None (2) USGS Thesaurus (1) ISO 19115 Topic Categories (1) Geographic Names Information System (GNIS) (1) ISO 19115 Topic Category (1) USGS information products (1) View Results as: JSON ATOM CSV

Environmental DNA data for Refinement of eDNA as an early monitoring tool at the landscape-level: Data These environmental DNA data and corresponding water quality data were collected and analyzed by the Fish and Wildlife Service in 2017. The samples were collected from 4 sites in pools 17 and 18 in the Upper Mississippi River on 3 sampling trips. The data was used to study occupancy modeling of eDNA data and determine optimal sampling effort required for reliable detection of invasive Bighead Carp and Silver Carp in streams with similar attributes at the Mississippi River. Categories: Data; Tags: Asian carp, Bighead carp, Environmental DNA, Silver carp, USGS Science Data Catalog (SDC), All tags... Upper Mississippi River navigation pool 17, Upper Mississippi River navigation pool 18, biota, eDNA, experimental design, invasive species, occupancy/occurrence models, Fewer tags Vegetation cover, ground cover, plant mortality, and species abundance across an experimental drought treatment on the Colorado Plateau from 2010-2022 These data were compiled to assess the response of vegetation and biological soil crusts to drought in a semi-arid ecosystem on the Colorado Plateau near Moab, Utah. Objective(s) of our study were to explore how vegetation cover, soil conditions, and growing season nitrogen (N) availability are impacted by multifaceted drying climate conditions using data from a long-term precipitation reduction experiment (30% reduction). In 2010, U.S. Geological Survey biologists installed paired experimental plots with a control plot and a plot covered by a shelter that excluded 35% of incoming precipitation. These 40 sites represent shallow vs. deep soils and sandstone vs. shale parent material. These data were collected at... Categories: Data; Tags: Botany, Colorado Plateau, Ecology, Geochemistry, Geography, All tags... Information Sciences, Moab, Soil Sciences, USGS Science Data Catalog (SDC), available nitrogen, biogeography, biological soil crusts, biota, control plot, data release, deep soils, droughts, elevation, environment, experimental design, experimental plot, extreme drought, field experiments, field inventory and monitoring, field methods, field sampling, focal species, foliar isotopes, geoscientificInformation, ground cover, nitrogen, plant cover, plant mortality, plant species richness, plants (organisms), plot sampling, plot-level data, precipitation (atmospheric), sandstone, sedimentary rocks, semi-arid ecosystem, shale, shallow soils, shelter plot, sites, soil chemistry, soil resources, soil sciences, soil texture, species diversity, temporal data, terrestrial ecosystems, upper Colorado Plateau, vegetation, Fewer tags