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In order to allow for a comparison across years we visually digitized landcover of Poplar Island from a single image per year at a 1:1000 spatial extent with a minimum mapping unit of 300 square meters (no minimum dimensions aside from area). Images used to assign landcover were provided by the U.S. Army Corps of Engineers and were captured between July and October of their respective years. All images were 1 foot resolution.
Categories: Map;
Tags: Chesapeake Bay,
Chesapeake Bay,
Digitizing,
Ecology,
Geographic Information Systems,
These data support a paired USGS publication and document the use of retention ponds on commercial poultry farms by wild waterfowl.
Categories: Data;
Tags: Chesapeake Bay,
USGS Science Data Catalog (SDC),
Wildlife Disease,
avian influenza,
biota,
These data, which support a paired USGS publication, document the movement and infection status of mallards captured, marked, and tested at a wintering site in Tennessee. Data document differences in movement ecology between mallards infected and not infected with HPAI H5N1.
Categories: Data;
Tags: Mississippi Flyway,
USGS Science Data Catalog (SDC),
United States,
Wildlife Disease,
avian influenza,
These data describe the results of virus isolation from oropharyngeal/cloacal swabs and testing of sera by a commercial blocking enzyme-linked immunosorbent assay (bELISA) and hemagglutinin (HA) specific testing by microneutralization (MN) and hemagglutination inhibition (HI) for Lesser Scaup in both the Atlantic and Pacific Flyways and Greater Scaup in the Pacific Flyway. These data support a USGS published manuscript.
Categories: Data;
Tags: Atlantic Flyway,
Pacific Flyway,
USGS Science Data Catalog (SDC),
avian influenza,
biota
These data describe the affects of elastic leg-loop harnesses on the reproductive success and behavior of adult Common Terns and the growth and behavior of juvenile Common Terns. These data support a USGS authored manuscript.
Categories: Data;
Tags: Chesapeake Bay,
Common Tern,
Ecology,
Poplar Island,
USGS Science Data Catalog (SDC),
These data, which support a paired USGS publication, describe the efficacy of several management practices for reducing the presence of herring gulls in the nesting colonies of Common Terns. This data was collected on Poplar Island, located in the Chesapeake Bay portion of Maryland.
Categories: Data;
Tags: Chesapeake Bay,
Common Tern,
Herring Gull,
USGS Science Data Catalog (SDC),
Wildlife Biology,
This data release provides the predicted proportion of influenza-positive birds testing positive for H5 and H7 subtypes of IAV for each species at monthly intervals for each county centroid in the continental United States. This data supports a paired USGS publication.
Categories: Data;
Tags: USGS Science Data Catalog (SDC),
United States,
Wildlife Disease,
avian influenza,
biota
These data describe the creation, execution, and results of an effort to model the risk of avian influenza transmission across the wild waterfowl - domestic poultry interface at weekly intervals for the contiguous United States.
Predicted Avian Influenza Prevalence for Wild Waterfowl Species Across the Continental United States
This data release provides the predicted proportion of birds testing positive for IAV for each species at weekly intervals for each county centroid in the continental United States. This data supports a paired USGS publication.
A compilation of previously published results exploring the pathogenesis of avian influenza viruses in wild avian species in North America. First release: March 2024 Revised: August 2024 (ver. 2.0)
Categories: Data,
Data Release - Revised;
Tags: North America,
USGS Science Data Catalog (SDC),
avian influenza,
biota
Wild lesser scaup from the Chesapeake Bay, captured and implanted with satellite transmitters for a separate ecology study, were opportunistically sampled for avian influenza. These data detail the virological sampling results, obtained post release, which include a single positive for clade 2.3.4.4 H5N1 virus of the A/goose/Guangdong/1/1996 (Gs/GD) H5N1 lineage of highly pathogenic IAV. These data also include the movements of the infected bird from release until death as well as four conspecifics marked and released concurrent with the HPAI positive bird. These data support a paired publication.
Categories: Data;
Tags: Chesapeake Bay,
Ecology,
USGS Science Data Catalog (SDC),
Wildlife Disease,
avian influenza,
These data describe the area of different habitat covered in water as determined via three approaches: manual surveys, digitized aerial imagery, and categorization of the newly available dynamic surface water extent dataset derived from satellite imagery. These data support a scientific publication.
Categories: Data;
Tags: Chesapeake Bay,
Remote Sensing,
USGS Science Data Catalog (SDC),
biota,
dynamic surface water extent,
In many coastal regions throughout the world, there is increasing pressure to harden shorelines to protect human infrastructures against sea level rise, storm surge, and erosion. These data reflect the digitization of the shorelines of 21 sub-estuaries throughout the Chesapeake Bay (USA) as observed from 2010 through 2014. Shoreline segments are classified into one of seven shoreline types: bulkhead, riprap, developed, natural marsh, Phragmites-dominated marsh, sandy beach, and forest. These data were collected as part of a larger effort to understand the impacts of shoreline hardening on waterbird community integrity.
These videos show a pair of common terns usurping a least tern nest with chicks. These data support a paired USGS authored manuscript.
Categories: Data;
Tags: Chesapeake Bay,
Ecology,
Poplar Island,
USGS Science Data Catalog (SDC),
biota,
This data release details the results of avian influenza sampling of dabbling ducks in Maine and Maryland. These data support an associated USGS publication.
Emergence of avian influenza viruses with high lethality to humans, such as the currently circulating highly pathogenic A(H5N1) and A(H7N9) cause serious concern for the global economic and public health sectors. To improve our understanding of the spatial and temporal trends in transmission risk we developed a model that predicts hotspots of novel virus emergence between domestic and wild birds and incorporates H5N1 risk factors. Models were produced at 30 km spatial resolution across two temporal seasons. Files are named using a TransmisisonDirection_Season_DataType format such that Transmission direction can end in a (poultry to waterfowl) or b (waterfowl to poultry), Season can be breeding (br) or wintering...
Wild waterfowl (family Anatidae) are reported as secondary transmitters of HPAIV and primary reservoirs for low-pathogenic avian influenza viruses, yet spatial inputs for disease risk modeling for this group have been lacking. Using geographic information software and Monte Carlo simulations, we developed geospatial indices of waterfowl abundance at 1 km resolutions for the breeding and wintering seasons for China, the epicenter of H5N1. Two types of spatial layers were developed: cumulative waterfowl abundance (WAB), a measure of predicted abundance by species, and cumulative abundance weighted by H5N1 prevalence (WPR), whereby abundance for each species was adjusted based on species specific prevalence values....
This data layer depicts the relative susceptibility of poultry to the transmission of Avian Influenza from wild birds based upon poultry type and density for the contiguous United States.
This data layer depicts the weekly estimates of the relative risk of avian influenza transmission from wild waterfowl to domestic poultry. These data represent an early phase of ongoing model development and the inclusion of additional parameters is upcoming.
While small unmanned aerial systems (UAS) present a unique opportunity to survey avian populations while limiting disturbance, relatively little is known about how this method compares with more traditional approaches. In this study we compared population estimates of a mixed-species egret colony in the Chesapeake Bay (Maryland, USA) derived from UAS photo counts, flush counts, flight-line surveys, and in-colony nest counts along with the time required to derive an estimate via each approach. These data support a larger USGS manuscript.
Categories: Data;
Tags: Cattle Egret,
Chesapeake Bay,
Ecology,
UAS,
USGS Science Data Catalog (SDC),
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