Biomass accrual and trace-element concentrations in water and periphytic algae at select locations in the Clark Fork and Blackfoot Rivers, Montana, 2015

The U.S. Geological Survey monitored algal biomass accrual and concentrations of metals and other trace elements in stream water and periphytic algae at 3-4 day intervals over a 2-week period at 3 locations within the upper and middle portions of the mining-impacted Clark Fork River, Montana, and at one location on the relatively unimpacted Blackfoot River tributary. This data release makes available trends in major and minor trace element concentrations in surface water and periphytic algae, and corresponding trends in concentrations of autotrophic (chlorophyll a) and heterotrophic (ash-free dry mass) algal biomass collected in late July and early August 2015.

Data e Risorse

Campo Valore
accessLevel public
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identifier USGS:5fa42d63d34ed3698f909b71
metadata_type geospatial
modified 20210316
old-spatial -114.02160644432, 45.958483478304, -112.48352050688, 47.159542510254
publisher U.S. Geological Survey
publisher_hierarchy Department of the Interior > U.S. Geological Survey
resource-type Dataset
source_datajson_identifier true
source_hash 3a05852d1150fd0de3f3625940b9c0a8f4112237
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spatial {"type": "Polygon", "coordinates": [[[-114.02160644432, 45.958483478304], [-114.02160644432, 47.159542510254], [ -112.48352050688, 47.159542510254], [ -112.48352050688, 45.958483478304], [-114.02160644432, 45.958483478304]]]}
theme {geospatial}
Gruppi
  • AmeriGEOSS
  • National Provider
  • North America
Tag
  • algae
  • amerigeo
  • amerigeoss
  • bioaccumulation
  • black-foot-river
  • ckan
  • clark-fork-river
  • galen-gage
  • geo
  • geoss
  • national
  • north-america
  • trace-element
  • turah
  • united-states
  • usgs-5fa42d63d34ed3698f909b71
isopen False
license_id notspecified
license_title License not specified
maintainer Terry M Short
maintainer_email tmshort@usgs.gov
metadata_created 2025-11-21T08:20:51.806535
metadata_modified 2025-11-21T08:20:51.806538
notes The U.S. Geological Survey monitored algal biomass accrual and concentrations of metals and other trace elements in stream water and periphytic algae at 3-4 day intervals over a 2-week period at 3 locations within the upper and middle portions of the mining-impacted Clark Fork River, Montana, and at one location on the relatively unimpacted Blackfoot River tributary. This data release makes available trends in major and minor trace element concentrations in surface water and periphytic algae, and corresponding trends in concentrations of autotrophic (chlorophyll a) and heterotrophic (ash-free dry mass) algal biomass collected in late July and early August 2015.
num_resources 2
num_tags 16
title Biomass accrual and trace-element concentrations in water and periphytic algae at select locations in the Clark Fork and Blackfoot Rivers, Montana, 2015