Status and trends in stream fish and benthic macroinvertebrate assemblage metrics across the Chesapeake Bay watershed
This dataset provides analysis results for recent status of and trends in 44 fish and 99 macroinvertebrate assemblages in the Chesapeake Bay watershed. For both biological datasets a multi-metric index, metric of assemblage sensitivity, functional feeding group metric and habitat preference metric was selected for analysis. Sites used to calculate trends required a minimum of 7 years of data. Status was calculated as a three-year average by averaging metric values for the most recent three years of data at each site and trends were calculated using generalized additive models (GAM) in the R package 'mgcv' for the full window of sample years at each site. Detailed data preparation information, analytical methods, and results are presented and discussed in the associated Scientific Investigative Report (https://doi.org/10.3133/sir20255072).
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Complete Metadata
| accessLevel | public |
|---|---|
| bureauCode |
[ "010:12" ] |
| contactPoint |
{ "fn": "Lindsey J. Boyle", "@type": "vcard:Contact", "hasEmail": "mailto:lboyle@usgs.gov" } |
| description | This dataset provides analysis results for recent status of and trends in 44 fish and 99 macroinvertebrate assemblages in the Chesapeake Bay watershed. For both biological datasets a multi-metric index, metric of assemblage sensitivity, functional feeding group metric and habitat preference metric was selected for analysis. Sites used to calculate trends required a minimum of 7 years of data. Status was calculated as a three-year average by averaging metric values for the most recent three years of data at each site and trends were calculated using generalized additive models (GAM) in the R package 'mgcv' for the full window of sample years at each site. Detailed data preparation information, analytical methods, and results are presented and discussed in the associated Scientific Investigative Report (https://doi.org/10.3133/sir20255072). |
| distribution |
[ { "@type": "dcat:Distribution", "title": "Digital Data", "format": "XML", "accessURL": "https://doi.org/10.5066/P13FB2KQ", "mediaType": "application/http", "description": "Landing page for access to the data" }, { "@type": "dcat:Distribution", "title": "Original Metadata", "format": "XML", "mediaType": "text/xml", "description": "The metadata original format", "downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.662ff579d34ea70bd5f26411.xml" } ] |
| identifier | http://datainventory.doi.gov/id/dataset/USGS_662ff579d34ea70bd5f26411 |
| keyword |
[ "Chesapeake Bay Watershed", "Delaware", "Maryland", "New York", "Pennsylvania", "USGS:662ff579d34ea70bd5f26411", "United States", "Virginia", "Washington DC", "West Virginia", "aquatic ecosystems", "biota", "environment", "fish", "freshwater ecosystems", "inlandWaters", "macroinvertebrates", "time series analysis" ] |
| modified | 2025-08-15T00:00:00Z |
| publisher |
{ "name": "U.S. Geological Survey", "@type": "org:Organization" } |
| spatial | -80.4381, 36.6971, -74.5926, 43.0066 |
| theme |
[ "geospatial" ] |
| title | Status and trends in stream fish and benthic macroinvertebrate assemblage metrics across the Chesapeake Bay watershed |
