{"accessLevel": "public", "bureauCode": ["020:00"], "contactPoint": {"fn": "Ken Fritz", "hasEmail": "mailto:fritz.ken@epa.gov"}, "describedBy": "https://pasteur.epa.gov/uploads/10.23719/d-v513/documents/Data%20Dictionary%20for%20Algal%20and%20environmental%20data.xlsx", "describedByType": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", "description": "Algal cover (index), density (individuals/cm2) and biovolume (um3/cm2) for diatoms (species and genus-levels) and soft-bodied taxa (genus-level) and environmental data (hydrology, geomorphology, macroinvertebrate, physicochemical, watershed) from 508 samples across 22 ephemeral, 37 intermittent, and 51 perennial reaches distributed along 31 forested headwater streams within 4 ecoregions in the contiguous United States. Citation information for this dataset can be found in Data.gov's References section.", "distribution": [{"accessURL": "https://ars.els-cdn.com/content/image/1-s2.0-S1470160X26004802-mmc1.xlsx", "title": "https://ars.els-cdn.com/content/image/1-s2.0-S1470160X26004802-mmc1.xlsx"}], "identifier": "https://doi.org/10.23719/d-v513", "keyword": ["Algae", "Headwater", "diatoms", "drying", "ephemeral", "epilithon", "flow classification", "indicators", "intermittent", "perennial"], "license": "https://pasteur.epa.gov/license/sciencehub-license.html", "modified": "2025-10-01", "programCode": ["020:000"], "publisher": {"name": "U.S. Environmental Protection Agency", "subOrganizationOf": {"name": "U.S. Government"}}, "references": ["https://doi.org/10.1016/j.ecolind.2026.115080", "https://pasteur.epa.gov/uploads/10.23719/d-v513/documents/Fritz_etal2026.pdf", "https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13426848"], "rights": null, "spatial": "-121.5339,37.4733,-72.2249,47.05", "title": "Algal and environmental data used to develop algal indicators for streamflow duration assessment methods in forested headwater streams"}