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Found 532 dataset(s) matching "abundance estimation".
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The Long-Term Monitoring at the East and West Flower Garden Banks 2007-2008 dataset includes biological and oceanographic measurements collected to satisfy the BOEMRE and NOAA contract...
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This dataset contains raw and processed data from an annual long-term monitoring study that documents the benthic and fish community changes at Stetson Bank, in the Flower Garden Banks National...
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The imagery and annotations presented here were generated while testing an aerial photographic survey design to improve repeatability, transparency, and estimation of variance for annual...
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A biologist and field crew from Northern Prairie Wildlife Research Center visited sites nine times throughout the breeding season (late May to mid-July) to record counts of grassland birds. ...
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This isopach map shows the thickness of the interval from the top of the Cotton Valley Group to the top of the Smackover Formation. It was necessary to contour this expanded interval, instead of...
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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...
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This report summarizes the dating results from sedimentary deposits sampled by the National Park Service and the U.S. Geological Survey and analyzed at the USGS Luminescence Geochronology...
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1) The purpose of this project is to document juvenile salmon habitat occurrence in the Lower Columbia River and estuary, and examine how habitat conditions influence their distribution, health,...
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<p>These are data on variation in host specificity and genetics among 16 populations of an aphid parasitoid, <em>Aphelinus certus</em>, 15 from Asia and one from North America. Host range was the...
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Tracklines and associated observations were mapped and analyzed using ArcMap (ESRI, Redlands, CA). GPS data were recorded in NAD27 map datum and projected to an USGS Albers Equal Area Conic map...
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Data includes fish abundance and habitat data collected at ten sites in the Sandusky River, OH. Fish were collected using two 3.67 m long hoop nets with an initial hoop diameter of 0.91 m. Nets...
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The Nimbus-6 Scanning Microwave Spectrometer (SCAMS) Level 2 data product contains water vapor and temperature profiles, as well as antenna and brightness temperatures. SCAMS was designed to map...
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In 2016, for the first time, an abundance of age-0 silver carp (Hypophthalmichthys molitrix) were captured at several sites upstream of Lock and Dam 19 on the Upper Mississippi River near Keokuk,...
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This catalog lists the X-ray point-source population in the nearby Virgo elliptical galaxy NGC 4636 from three Chandra X-ray observations. These observations, totaling ~193 ks after time...
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A previously developed groundwater flow model (https://doi.org/10.3133/sir20185035) was modified and used as the primary tool to assess groundwater availability in the Ozark Plateaus aquifer...
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(i) Severe perkinsea data was based on the observation of characteristic gross and microscopic lesions and the morphological identification of Perkinsea organisms within the lesions. Necropsies...
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Tracklines and associated observations were mapped and analyzed using ArcMap (ESRI, Redlands, CA). GPS data were recorded in NAD27 map datum and projected to an USGS Albers Equal Area Conic map...
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Coral belt transect surveys, focused at quantifying the relative abundance, density, and size-class distribution of the anthozoan and hydrozoan corals, as well as the condition and health state of...
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The towed-diver method is used to conduct benthic surveys, assessing large-scale disturbances (e.g., bleaching) and quantifying benthic components such as habitat complexity/type and the general...
