Skip to main content
Advanced Search

Filters: Types: Citation (X)

Folders: ROOT > ScienceBase Catalog > Eastern Ecological Science Center ( Show direct descendants )

13 results (36ms)   

View Results as: JSON ATOM CSV
thumbnail
Forest- Data collected once using GIS prior to fish sampling. Our approach was to focus the study on smaller, headwater catchments because larger streams drained areas containing both hemlock and mixed hardwood forest, making forest-specific comparison intractable. In addition, most of these larger watersheds were impacted by humans (e.g., impoundments, agriculture, quarries) that could confound our assessment of the influence of hemlock. Even after limiting the study to headwater catchments, other possible confounding factors remained; we controlled for landscape variability (i.e., terrain and stream size) through the sampling design and we excluded others (i.e., minimum catchment area,beaver activity) through...
thumbnail
Raw data were collected in Shenandoah National Park during summer 2012. Air and temperature data were collected using temperature loggers at several stations throughout the park. These data were used in the publication of the manuscript "Accounting for groundwater influence on headwater stream thermal sensitivity to climate change" through the journal Ecological Applications. Water temperature data were collected at all 78 reach locations during the summer of 2012 (23 June–7 September). Temperature was measured every hour with a logger.
thumbnail
We measured the response of plants to disturbance across a gradient in inundation times by transplanting tussocks of Schoenoplectus americanus into mesocosms of different elevation in two marsh organ platforms. Both organs were planted on April 11, 2012 and harvested on August 21, 2012. Plants in one organ were disturbed by clipping all above ground vegetation on June 20 2012 (62 days), and left undisturbed in a control organ. Plant stems were clipped at the soil surface to isolate standing above ground material, and sorted into live and dead fractions by species. Above ground biomass was washed and dried at 70°C to a constant weight.
thumbnail
Exposure of wildlife to Active Pharmaceutical Ingredients (APIs) is likely to occur but evidence of hazard and risk is limited. One exposure pathway that has received attention is trophic transfer of APIs in a water-fish-osprey food chain. Samples of water, fish plasma and osprey plasma were collected from Delaware River and Bay, and analyzed for 21 APIs. Only 2 of 21 analytes exceeded Method Detection Limits (MDL) in osprey plasma (acetaminophen and diclofenac) with plasma levels typically 2-3 orders of magnitude below human therapeutic concentrations (HTC). We built upon a screening level model used to predict osprey exposure to APIs in Chesapeake Bay and evaluated whether exposure levels could have been predicted...
thumbnail
A breach in the White Dam has been proposed to facilitate fish passage. As a Technical Assistance project, the U.S. Geological Survey provided toxicity assessments of sediment samples collected by USEPA personnel. These data describe water-quality conditions in exposure chambers during 42-d sediment exposures using the freshwater amphipod, Hyalella azteca.
thumbnail
This dataset is comprised of eight files related to salt marsh monitoring data or measures of of human disturbance (i.e. human impacts in terms of physical, chemical, and land-use stressors) collected at 33 marsh study units (MSUs) in five National Parks within the NPS Northeast Coastal and Barrier Network (NCBN) along the northeastern coast of the US. Two files contain data related to the species and coverage of salt marsh vegetation observed in MSUs (1 data file, 1 definitions file). Two files contain data related to the species and abundance of nekton collected from creeks, pools and ditches in MSUs (1 data file, 1 definitions file). Two files contain data related to the height of key salt marsh vegetation species...
thumbnail
This data set includes metal concentrations measured in a species of earthworm (Eisenoides lonnbergi) collected at various locations on the Patuxent Wildlife Research Center.
thumbnail
The exposure of white-footed mice (Peromyscus leucopus) to lead and cadmium and the potential associated toxic effects were examined at three sites contaminated with lead in the Southeast Missouri Lead Mining District and at a reference site. Mice from the contaminated sites showed evidence of oxidative stress and red-blood cell δ-aminolevulinic acid dehydratase (ALAD) activity was depressed by an average of 68% at the most contaminated site. However, histological examinations of the liver and kidney, cytologic examination of blood smears and biomarkers of lipid peroxidation and DNA damage failed to show evidence of toxic effects from lead. The biomagnification ratio of cadmium (hepatic concentration/ soil concentration)...
thumbnail
This data set is comprised of five files related to the modification and scoring of Index of Waterbird Community Integrity (IWCI) scores for all waterbirds of the Chesapeake Bay. One Excel file (A) contains a list of 100+ Chesapeake waterbird species and their species attribute and IWCI scores. Another Excel file (B) contains case study data from recent surveys of breeding and migratory waterbirds in Chesapeake Bay and shoreline delineations across a disturbance gradient that were used to demonstrate the utility of the modified index. Finally, three supplemental files include an Access database (C), R code (D) and a protocol (E) for running the complex steps to calculate index scores.
thumbnail
Data Release for Report describes surface-water nutrient concentrations from multiple sites on the Conasauga River in northern Georgia in comparison with rivers in adjacent watersheds.
thumbnail
Data represents analyses of gizzard and gullet (esophagus and proventriculus) of nine ducks using traditional techniques
thumbnail
This dataset is comprised of six files related to waterbird surveys and resulting Index of Waterbird Community Integrity (IWCI) scores in 21 subestuaries of the Chesapeake Bay from 2010-2014. Two .csv files (1 data file: Prosser et al 2017_IWCI Results MS_Bird Survey Raw Data.csv, 1 definitions file: Prosser et al 2017_IWCI Results MS_Bird Survey Raw Data_Definitions.csv) contain data related to raw waterbird survey data from two seasons (summer and fall). Two .csv files (1 data file: Prosser et al 2017_IWCI Results MS_Species List.csv, 1 definitions file: Prosser et al 2017_IWCI Results MS_Species List_Definitions.csv) contain data related to 60+ Chesapeake waterbird species observed in surveys and their species...
thumbnail
This is about 10 years of PIT telemetry data of shad (and other fish species) tagged and released in the Connecticut River. All shad were released at either Holyoke Lift ('HL') or Turners Falls. At Turners, Some were released in the tailrace of Cabot Station ('CB') or at the trap at the upstrean exit of the Cabot Fishway ('CT'). Some others were released at the bottom of the Spillway ladder ('SB') or to the canal above Cabot Trap.This file holds information on individual fish, including PIT and radio tags (where applicable), sex, length, etc.
    map background search result map search result map 2012 Air and Temperature Data from Shenandoah National Park Fish Population and Hemlock data in Delware Water Gap Connecticut River Shad (and other fish species) trapping data from 1999 to 2012 Standardization and Application of an Index of Community Integrity for Waterbirds in the Chesapeake Bay Experimental recovery rates of tidal marsh vegetation Development of a Multimetric Index (MMI) for Integrated Assessment of Salt Marsh Ecosystem Condition NCBN Vegetation & Nekton Data Effects of local shoreline and subestuary watershed condition on waterbird use influences of geography scale and season in the Chesapeake Bay Investigation of pharmaceuticals in water, fish, and ospreys nesting in Delaware River and Bay Nutrient levels in surface waters of the Conasauga River and other tributaries within the Coosa River Watershed Exposure of Peromyscus leucopus to lead and cadmium in the Southeast Missouri Lead Mining District Anomalous bioaccumulation of lead in the earthworm Eisenoides lonnbergi (Michaelsen) Toxicity Assessment of Sediments Collected Upstream and Downstream of the White Dam in Clarke County, Georgia Atypical Feeding Behavior of Long-tailed Ducks in the Wake of a Commercial Fishing Boat while Clamming Atypical Feeding Behavior of Long-tailed Ducks in the Wake of a Commercial Fishing Boat while Clamming Anomalous bioaccumulation of lead in the earthworm Eisenoides lonnbergi (Michaelsen) Toxicity Assessment of Sediments Collected Upstream and Downstream of the White Dam in Clarke County, Georgia Experimental recovery rates of tidal marsh vegetation Fish Population and Hemlock data in Delware Water Gap 2012 Air and Temperature Data from Shenandoah National Park Connecticut River Shad (and other fish species) trapping data from 1999 to 2012 Exposure of Peromyscus leucopus to lead and cadmium in the Southeast Missouri Lead Mining District Nutrient levels in surface waters of the Conasauga River and other tributaries within the Coosa River Watershed Investigation of pharmaceuticals in water, fish, and ospreys nesting in Delaware River and Bay Standardization and Application of an Index of Community Integrity for Waterbirds in the Chesapeake Bay Effects of local shoreline and subestuary watershed condition on waterbird use influences of geography scale and season in the Chesapeake Bay Development of a Multimetric Index (MMI) for Integrated Assessment of Salt Marsh Ecosystem Condition NCBN Vegetation & Nekton Data