Data

These data were collected to measure methane (CH4) using a small uncrewed aircraft system (sUAS). Test flights occurred at the APEX fen site, located within Interior Alaska. The fen was instrumented with an eddy covariance flux tower, allowing us to compare sUAS-based CH4 flux emissions to flux tower-based values.

Sleeper populations are established populations of introduced species whose population growth is limited by one or more abiotic or biotic conditions. Sleeper populations pose an invasion risk if a change in those limiting conditions, such as climate change, enables population growth and invasion. With thousands of established species, it is critical that we identify and prioritize...

This data release includes geochemistry data collected from sediments, sediment pore fluids, and high temperature hydrothermal vent fluids from the Galápagos Spreading Center. Samples were collected from Aug - Nov 2023. Data types include total carbon and nitrogen content, carbon and nitrogen stable isotopes, dissolved iron concentrations, and lipid biomarker concentrations.

Magnetic susceptibility measurements in the vicinity of the Mesquite Hills, San Bernardino County, California. Susceptibility measurments, made with a Terraplus KT10 magnetic susceptibility meter, were collected on various igneous rocks in the Mesquite HIlls area to better characterize the magnetic properties of igneous rocks in the region. Mafic rocks in the areas are reliably magnetic...

Cisco and Bloater growth data from hatchery reared fish were collected in association with a project to repopulate Lake Ontario native prey species. Fish were grown and measured under hatchery conditions for up to nine months before being released into Lake Ontario. Weekly measurements of total length, total weight, and morphometrics were recorded for both species to determine growth...

This dataset records Cladophora and associated benthic algae, collectively Cladophora community or submerged aquatic vegetation (SAV), biomass collected during the growing season of 2022 at stations located along the U.S. shoreline of Lakes Michigan, Huron, Erie, and Ontario. It also records a variety of supporting data collected at Cladophora measurement stations. These supporting data...

In June 2017, Lake Sturgeon were observed spawning in Fall Creek, a tributary to Cayuga Lake, NY. The spawning site was just downstream of Ithaca Falls, the first impassible barrier. Data were collected to quantify the stream habitat use by the Lake Sturgeon. These were the first sturgeon observed spawning in a Cayuga Lake tributary recorded in the New York Department of Environmental...

Individual point estimates of stream density by juvenile salmonid species in two small tributaries to the Salmon River, Lake Ontario, New York were recorded. Enumeration of salmonid species was observed using a backpack electrofisher in order to identify fish species. Stream density estimates were calculated using stream width measurements taken at equally spaced transects. Comparisons...

The Illinois River receives nutrients from point and non-point runoff from upstream urban and agricultural areas. These excess nutrients could be contributing to harmful algal blooms in the Illinois River and its tributaries. The Upper Mississippi River Restoration Program has been monitoring water quality on the La Grange Pool in the Illinois River since 1993. The data collected from...

This data release includes 1) results from intact sediment core experiments to measure nutrient release and uptake from sediments in the Maumee River mouth and adjacent nearshore areas. 2) physical and chemical properties of sediments sampled at the same sites where sediments were collected for intact core experiments, plus additional sites in the area. 3) Results of water column...

Estimating individual age is important for defining the structure of fish populations (i.e., recruitment, growth, and mortality), including the assessment of many management objectives. Knowledge of the relative precision of age estimates using standard calcified structures is required to estimate the age of Grass Carp. Therefore, our objective was to evaluate the precision of annuli...

These data consist of prey fish density and biomass estimates throughout Lake Michigan during late summer-fall from 1973 to 2025 along with alewife (Alosa pseudoharengus) recent age estimates collected. Fish were collected using bottom or midwater trawls. In addition to fish data, some zebra and quagga mussel (Dreissena spp.) biomass estimates are included as well as recent native...