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Historical Stream Fish Distribution Database for the Conterminous United States (1950-1990): IchthyMaps

Metadata Updated: October 28, 2023

Fish occurrence data to support high-resolution distribution models and test various community and macroecological hypotheses have not been available at the national scale. We present IchthyMaps, a database of high-quality historical fish occurrences covering fishes of the conterminous United States. Designed on the principles of metacommunity ecology, IchthyMaps is a compilation of presence records from atlases up to 1990, at the resolution of the 1:100,000 National Hydrography Database Plus (NHDPlus) inter-confluence stream segment, readily aggregated into hierarchically coarser units (e.g. hydrologic unit code 8-digit and 12-digit watersheds). IchthyMaps contains about 606,550 presence records for 1,038 species and subspecies. These presence records occurred on 224,305 NHDPlus interconfluence stream segments, representing > 10% average sampling intensity. IchthyMaps is publicly accessible through USGS' ScienceBase infrastructure. It offers unprecedented opportunities for both basic and applied research and conservation initiatives in areas such as studying biogeography, gap analysis, and assessments of impacts of land use, species invasions, and climate change. More generally, this database broadens our capability to conduct research on fish ecology, biogeography, and management.

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Metadata Created Date May 31, 2023
Metadata Updated Date October 28, 2023

Metadata Source

Harvested from DOI EDI

Additional Metadata

Resource Type Dataset
Metadata Created Date May 31, 2023
Metadata Updated Date October 28, 2023
Publisher U.S. Geological Survey
Identifier USGS:5446a5a1e4b0f888a81b816d
Data Last Modified 20200827
Category geospatial
Public Access Level public
Bureau Code 010:12
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
Harvest Object Id 291e4cda-fb12-4f6f-b2b6-ae82ec165e06
Harvest Source Id 52bfcc16-6e15-478f-809a-b1bc76f1aeda
Harvest Source Title DOI EDI
Metadata Type geospatial
Old Spatial -125.0,24.0,-65.0,50.0
Publisher Hierarchy White House > U.S. Department of the Interior > U.S. Geological Survey
Source Datajson Identifier True
Source Hash d0683f34248d61f49303ecd290fd37a2e11529f85f7f86e9695b3c8262d57024
Source Schema Version 1.1
Spatial {"type": "Polygon", "coordinates": -125.0, 24.0, -125.0, 50.0, -65.0, 50.0, -65.0, 24.0, -125.0, 24.0}

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