These data was collected in conjuction with Upper Mississippi River Restoration-Long Term Resource Monitoring (UMRR-LTRM) element data. The goal of this data collection was to assess age structure of smallmouth buffalo Ictiobus bubalus in the Upper Mississippi River system. Through ongoing UMRR-LTRM efforts, we collected fish with a goal 10 smallmouth buffalo from 20mm length groups, beginning at 100mm of total length. Upon collection fish were measured, weighed and frozen, then transported to the Illinois River Biological Station in Havana Illinois. Upon completion of fish collection, fish were thawed and both lapillus otoliths were removed and a sex determination was made via visual inspection of the gonads. Lapillus otoliths were then thin sectioned, polished on 1000 and 2000 grit sandpaper until annuli were clearly visible. Fish age was then estimated independently by 3 readers using the polished thin sections, any disagreements were discussed and a final consensus age estimation was determined for every fish. When consensus could not be reached that sample was discarded from final dataset. Annuli for all aged fishes were then measured from the focus of the otolith for later analysis. This was done by measuring from the focus, or center of otolith formed near fish's birth, to each identified annuli. Every measurement began at the focus, so each successive annuli will have a larger length than preceeding annuli as fish grows over time.

These data was collected in conjuction with Upper Mississippi River Restoration-Long Term Resource Monitoring (UMRR-LTRM) element data. The goal of this data collection was to assess age structure of smallmouth buffalo Ictiobus bubalus in the Upper Mississippi River system. Through ongoing UMRR-LTRM efforts, we collected fish with a goal 10 smallmouth buffalo from 20mm length groups, beginning at 100mm of total length. Upon collection fish were measured, weighed and frozen, then transported to the Illinois River Biological Station in Havana Illinois. Upon completion of fish collection, fish were thawed and both lapillus otoliths were removed and a sex determination was made via visual inspection of the gonads. Lapillus otoliths were then thin sectioned, polished on 1000 and 2000 grit sandpaper until annuli were clearly visible. Fish age was then estimated independently by 3 readers using the polished thin sections, any disagreements were discussed and a final consensus age estimation was determined for every fish. When consensus could not be reached that sample was discarded from final dataset. Annuli for all aged fishes were then measured from the focus of the otolith for later analysis. This was done by measuring from the focus, or center of otolith formed near fish's birth, to each identified annuli. Every measurement began at the focus, so each successive annuli will have a larger length than preceeding annuli as fish grows over time.

Environmental DNA results for March 2022 smallmouth bass surveillance in the Gardner River, Montana

Environmental DNA results for March 2022 smallmouth bass surveillance in the Gardner River, Montana

Dataset contains sampling information (site, location, and date of sampling) for largemouth bass and silver carp captured in La Grange Pool of the Illinois River during 2015 used to determine the population size structure of both species for analyzing size-specific feeding of largemouth bass on young-of-year and Age-1 silver carp. The dataset also contains information on fish prey items found in largemouth bass stomachs for diet analysis.

Dataset contains sampling information (site, location, and date of sampling) for largemouth bass and silver carp captured in La Grange Pool of the Illinois River during 2015 used to determine the population size structure of both species for analyzing size-specific feeding of largemouth bass on young-of-year and Age-1 silver carp. The dataset also contains information on fish prey items found in largemouth bass stomachs for diet analysis.

Raw data for a monitoring data package consisting of fish community data for Buffalo National River, Ozark National Scenic Riverways and multiple prairie stream park units throughout the Midwest. The raw data includes fish species counts, site conditions, water quality and habitat measures, and stream discharge data for fish communities in Heartland Inventory and Monitoring Network Parks before any processing.

Raw data for a monitoring data package consisting of fish community data for Buffalo National River, Ozark National Scenic Riverways and multiple prairie stream park units throughout the Midwest. The raw data includes fish species counts, site conditions, water quality and habitat measures, and stream discharge data for fish communities in Heartland Inventory and Monitoring Network Parks before any processing.

The Large River Monitoring Forum compiled fish assemblage data for five large rivers in the U.S. as a part of a coordinated effort to compare and contract river monitoring efforts in large river systems. Fish community data from five monitoring programs were integrated to create the standardized dataset. Authors: Timothy D. Counihan1, Ian R. Waite2, Andy Casper3, David Ward4, Jennifer Sauer5, Elise Irwin6, Colin Chapman7, Brian Ickes5, Craig Paukert8, John Kosovich9, and Jennifer M. Bayer10 1- United States Geological Survey, Western Fisheries Research Center, Columbia River Research Laboratory, 5501A Cook-Underwood Road, Cook, WA 98605; email:tcounihan@usgs.gov; Phone:509-538-2299; Fax:509-538-2843 2- United States Geological Survey, Oregon Water Science Center, 2130 S.W. Fifth Avenue Portland, OR 97201 3- Illinois Natural History Survey, Illinois River Biological Station, 704 N. Schrader, Havana IL 62644 4- United States Geological Survey, Upper Midwest Environmental Sciences Center 2630 Fanta Reed Road, La Crosse, Wisconsin 54603 5- United States Geological Survey, Grand Canyon Monitoring and Research Center, 2255 North Gemini Drive, Flagstaff, AZ 86001-1637 6- United States Geological Survey, Alabama Cooperative Fish and Wildlife Research Unit, School of Forestry and Wildlife Sciences, 602 Duncan Drive, Auburn University, Auburn, AL 36849-5418 7- Oregon Department of Fish and Wildlife, Northwest Regional Office, 17330 SE Evelyn Street, Clackamas, OR 97015 8- United States Geological Survey, Missouri Cooperative Fish and Wildlife Research Unit, Department of Fisheries and Wildlife, 302 Anheuser-Busch Natural Resources Building, University of Missouri, Columbia, MO 65211 9- U.S. Geological Survey, Core Science Analytics, Synthesis, & Libraries, Lakewood, CO 10- United States Geological Survey, Northwest Region & Pacific Northwest Aquatic Monitoring Partnership, 909 1st Ave, 8th Floor Seattle, WA 98104

The Large River Monitoring Forum compiled fish assemblage data for five large rivers in the U.S. as a part of a coordinated effort to compare and contract river monitoring efforts in large river systems. Fish community data from five monitoring programs were integrated to create the standardized dataset. Authors: Timothy D. Counihan1, Ian R. Waite2, Andy Casper3, David Ward4, Jennifer Sauer5, Elise Irwin6, Colin Chapman7, Brian Ickes5, Craig Paukert8, John Kosovich9, and Jennifer M. Bayer10 1- United States Geological Survey, Western Fisheries Research Center, Columbia River Research Laboratory, 5501A Cook-Underwood Road, Cook, WA 98605; email:tcounihan@usgs.gov; Phone:509-538-2299; Fax:509-538-2843 2- United States Geological Survey, Oregon Water Science Center, 2130 S.W. Fifth Avenue Portland, OR 97201 3- Illinois Natural History Survey, Illinois River Biological Station, 704 N. Schrader, Havana IL 62644 4- United States Geological Survey, Upper Midwest Environmental Sciences Center 2630 Fanta Reed Road, La Crosse, Wisconsin 54603 5- United States Geological Survey, Grand Canyon Monitoring and Research Center, 2255 North Gemini Drive, Flagstaff, AZ 86001-1637 6- United States Geological Survey, Alabama Cooperative Fish and Wildlife Research Unit, School of Forestry and Wildlife Sciences, 602 Duncan Drive, Auburn University, Auburn, AL 36849-5418 7- Oregon Department of Fish and Wildlife, Northwest Regional Office, 17330 SE Evelyn Street, Clackamas, OR 97015 8- United States Geological Survey, Missouri Cooperative Fish and Wildlife Research Unit, Department of Fisheries and Wildlife, 302 Anheuser-Busch Natural Resources Building, University of Missouri, Columbia, MO 65211 9- U.S. Geological Survey, Core Science Analytics, Synthesis, & Libraries, Lakewood, CO 10- United States Geological Survey, Northwest Region & Pacific Northwest Aquatic Monitoring Partnership, 909 1st Ave, 8th Floor Seattle, WA 98104