Filters: Tags: USGS Science Data Catalog (SDC) (X) > Date Range: {"choice":"week"} (X)
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These data are from joint visual encounter and environmental DNA (eDNA) surveys conducted for northwestern pond turtles (Actinemys marmorata) in streams on privately-owned timberlands in northern California.
This model has been superseded by an updated version of the model. The new model can be found at: https://doi.org/10.5066/P99KJ1U1, https://doi.org/10.5066/P9FTZ5RW, https://doi.org/10.5066/P9NBWLYX, https://doi.org/10.5066/P97XBULI, https://doi.org/10.5066/P980EHWV, https://doi.org/10.5066/P95XLBB5, https://doi.org/10.5066/P9ICSZWF, https://doi.org/10.5066/P96LJ01V, and https://doi.org/10.5066/P9IZRO3V. A three-dimensional groundwater flow model (MODFLOW200-FMP1_1) of the Central Valley in California was developed to aid water managers in understanding how water moves through the aquifer system, to predict water-supply scenarios, and to address issues related to water competition. The USGS Groundwater Resources...
Categories: pre-SM502.8;
Tags: California,
Central Valley,
Corcoran Clay,
Groundwater,
Groundwater Model,
This is the mortality and water quality data for 2 efficacy trials of medicated feed for controlling mortality in Walleye (Sander vitreus) due to motile aeromonad infections. Top-coated feed with florfenicol or oxytetracycline or control feed were administered in both trials to fingerling walleye. Daily mortality counts and water quality measurements for dissolved oxygen, pH, temperature are included as csv files.
Categories: Data;
Tags: Aquatic Biology,
MAS,
USGS Science Data Catalog (SDC),
biota,
coolwater finfish,
This is a dataset containing aggregated non-native plant occurrence and abundance data for the contiguous United States. We used these data to develop habitat suitability models for species found in the Eastern United States using locations with 5% cover or greater. We adapted the INHABIT modeling workflow (Young et al. 2020), using a consistent set of climatic predictors that were important in the INHABIT models. We developed models using five algorithms with VisTrails: Software for Assisted Habitat Modeling [SAHM 2.2.2]. We accounted for sampling bias by using the target background approach, and constructed model ensembles using the five models for each species for three different thresholds (conservative to targeted;1st...
Categories: Data,
Data Release - In Progress;
Tags: Botany,
Contiguous United States,
Ecology,
SAHM,
Species Distribution Modeling,
Information was gathered to support a cumulative effects assessment of restoration in barrier island and shoreline systems of the north central Gulf of Mexico. Information includes: 1) results from two literature searches to help guide the development of a conceptual model of a barrier island and shoreline system and identify drivers and stressors important to that system, and 2) an accounting of restoration projects and descriptive information to document the distribution of Deepwater Horizon-funded restoration projects within the study area and guide the identification of potential effects on focal resources.
Categories: Data;
Tags: Barrier Island,
Ecology,
USGS Science Data Catalog (SDC),
cumulative effects,
dune restoration,
Metals are used in primary producer metabolic pathways, such as photosynthesis and the acquisition of macronutrients nitrogen (N) and phosphorus (P), yet we often do not know their potential as limiting nutrients in freshwaters. In the Great Lakes, metals have sometimes been identified as limiting the acquisition of macronutrients, mostly in off-shore waters that are relatively isolated from tributary inputs and sediment interactions. We hypothesized that another area where metals might be important was within harmful algal blooms (HABs). Harmful algal blooms are more likely to occur where N and P loads are elevated due to human activities, but short-term growth assays still often find summer bloom communities are...
We investigated the relative importance of groundwater (GW) and other local heat budget processes on downstream annual stream temperature signal characteristics using deterministic heat budget model (HFLUX) scenarios within an idealized stream reach representative of mountainous forested conditions. The purpose of this data release is to provide additional supplemental information for a published manuscript (Johnson et al., 2024). In this data release, we include (i) example input spreadsheets and an R script demonstrating how to read-in, edit, and export spreadsheet files without the need for a proprietary license, and (ii) MATLAB scripts necessary to run the HFLUX model and an example MATLAB script for developing...
The raw data files within the “Airborne electromagnetic, magnetic, and radiometric surveys of the Mississippi Alluvial Plain and Chicot Aquifer System, March 2018 and May - August 2021: Minimally Processed (Raw) Data” child item are broken up according to the three main objectives of these surveys: River surveys along the thalweg of major rivers within the MAP and the Chicot Aquifer extents; Levee surveys along the Mississippi and Arkansas rivers from Cairo, IL to Baton Rouge, LA and northwest from the confluence of the Mississippi and Arkansas rivers to Pine Bluff, AR; and gridded products mainly focused on gravel bars within the Mississippi River from Helena, MS to the confluence with the Arkansas River. The...
Categories: Data;
Tags: Arkansas,
Arkansas River,
Bayou Lacassine,
Bayou Teche,
Big Sunflower River,
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