Data

This dataset provides estimates of residential septic tank densities at 12-digit Hydrologic Unit Code (HUC12), National Hydrography Dataset (NHD Plus version 2.1, 1:100k scale) catchment, and 2020 Census Block Group (version 2021) scale for the conterminous United States. Using United States Legacy Census data from the 1990s and the land use classification from the National Land Cover...

These data have been collected by the United States Geological Survey’s Northeast Amphibian Research and Monitoring Initiative (USGS NEARMI) scientists. We collected these data to examine if Bsal was introduced to a site where there was a known pet release in Western, Massachusetts.

Counts and measurements were made on specimens of the Halloween darter (Percina crypta) and of the Blackbanded darter (Percina nigrofasciata, sensu lato). Data used in the original description of Percina crypta are included, in addition to counts (and in some cases measurements) for 66 additional Percina nigrofasciata from the Savannah, Altamaha, and upper Chattahoohee river systems, and...

These data describe avian influenza sampling efforts for eastern wild turkeys (Meleagris gallopavo silvestris) across the Maryland portion of the Delmarva Peninsula, USA in the winter of 2023-2024

This data release supports a paired USGS publication that explores how road watering on an active construction site impacts dust accumulation and monarch distribution.

These data describe the demographic composition of Common Terns at a newly identified staging area on the Patuxent River Naval Air Station and evaluates the importance of this location to the local breeding population. Specifically, we sought to identify the number of individuals using this potential staging area, the origins of those individuals, and the relative importance of this...

This metadata record describes a series of data sets of climate and land-use/land-cover features (provided in parquet file format) linked to NHDPlus Version 2.1’s (NHDPlusV2) stream segments, their associated catchments and their upstream watersheds within selected regions in the conterminous United States. All data can be linked to NHDPlusV2 using the COMID field in these tables and the...

This study examined effects of the brominated flame retardant hexabromocyclododecane (HBCD) on the avian endocrine system. Japanese quail (Coturnix japonica) were exposed to multiple doses of HBCD over multiple generations through feed and by maternal deposition into the egg. Liver transcriptomes were examined to identify genes and pathways directly affected by HBCD to better understand...

Natural resource managers worldwide grapple with protecting aquatic environments and species in the face of intensifying land use and climatic changes. The hierarchical landscape theory suggests that a species distribution is impacted by multiple series of environmental factors affecting the species at multiple spatial resolutions. For a species to inhabit an area, it must pass through...

The Ecology Section at the USGS Conte Laboratory has studied fish in the West Brook since 1997. The goal is to understand the strength and direction of drivers on fish growth, movement, reproduction and survival in the wild. We hope to provide a comprehensive understanding of fish population dynamics for this stream network and ultimately individual fitness (natural selection and...

Mark-recapture records of salamanders in the genus Desmognathus within stream habitat at Shenandoah National Park, Virginia from 2007-2013

The Grand Calumet River flows through northwestern Indiana and was designated an EPA Area of Concern (AOC) in 1987. There are multiple legacy pollutants in the river including but not limited to heavy metals and PCBs. To investigate potential causes and patterns of eutrophication in the river, water samples were collected for 16S rRNA microbial and eukaryotic 18S rRNA amplicon sequencing...