Aquatic vertebrate populations in streams throughout the HJ Andrews Experimental Forest, 2013 to present

  • Creator(s): Sherri L. Johnson, Brooke E. Penaluna
  • PI(s): Sherri L. Johnson, Brooke E. Penaluna
  • Originator(s): Brooke E. Penaluna, Sherri L. Johnson
  • Other researcher(s): Ivan Arismendi, Dana Richard Warren
  • Dates of data collection: Aug 6 2013 - Aug 15 2019
  • Data collection status: Study continues and further data collection is planned
  • Data access: Online
  • DOI:
  • Last update: Nov 10 2020 (Version 3)
<Citation>     <Acknowledgement>     <Disclaimer>    
Johnson, S.; Penaluna, B. 2020. Aquatic vertebrate populations in streams throughout the HJ Andrews Experimental Forest, 2013 to present. Long-Term Ecological Research. Forest Science Data Bank, Corvallis, OR. [Database]. Available: Accessed 2023-12-11.
Data were provided by the HJ Andrews Experimental Forest research program, funded by the National Science Foundation's Long-Term Ecological Research Program (DEB 2025755), US Forest Service Pacific Northwest Research Station, and Oregon State University.
While substantial efforts are made to ensure the accuracy of data and documentation, complete accuracy of data sets cannot be guaranteed. All data are made available "as is". The Andrews LTER shall not be liable for damages resulting from any use or misinterpretation of data sets.
This multi-year study quantifies the distribution and density of aquatic vertebrates throughout Lookout Creek stream network, including Mack, McRae and Upper Lookout Creeks. We are examining how predictable and consistent the densities and sizes of cutthroat trout and coastal giant salamanders are throughout the network and whether they fluctuate synchronously with vertebrates sizes and densities in Mack Creek that have been measured since 1987 (AS006). We are also examining biomass and condition of individuals across sites. Density and developmental stage of coastal tailed frog tadpoles are noted. We use electroshocking in discrete blocked reaches (depletion and mark-recapture methodologies) to collect individuals that are then weighed, measured and released. Site specific characteristics are measured at each sampling event, including wetted widths and water depths. Broader landscape metrics, including stream gradient and watershed area, were calculated for sites.

Study Description Study Site Map Taxonomic Hierarchy Download Study Location Information: (CSV)
Ecological Metadata Language: (EML)
1Raw data on vertebrate length, weight, and abundance (Aug 6 2013 - Aug 15 2019)METADATADATA
Length and mass of aquatic vertebrates captured during sampling
2Stream habitat measuremets (Jul 29 2016 - Aug 15 2019)METADATADATA
Wetted widths and depths of stream reaches sampled for aquatic vertebrates
3Site Characteristics (Aug 6 2013 - Aug 15 2019)METADATADATA
GPS locations and watershed and reach attributes for aquatic vertebrate sampling sites
4Sampling History (Aug 6 2013 - Aug 15 2019)METADATADATA
Sampling dates for study reaches and type of sampling each year with actual locations of block nets

 Aquatic Vertebrate Sampling Protocols - Detailed protocols of the sampling of aquatic vertebrate by different research lab groups.

 Aquatic Vertebrate Population Study in Mack Creek, Andrews Experimental Forest, 1987 to present (AS006)
 Riparian controls on light availability, primary producers, invertebrates, fish and salamanders in streams in and near the Andrews Experimental Forest, 2014-2018 (AS010)
 Stream Consumers and Lotic Ecosystem Rates (SCALER) in streams of the HJ Andrews Experimental Forest, 2014-2016 (AN008)