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OAS accession Detail for 0277271
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| accessions_id: | 0277271 | archive |
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| Title: | Summary of prey groups found in harbor seal scat samples from the San Juan Islands analyzed at the Acevedo lab at Western Washington University during 2005-2008 (Seal_response_to_prey project) (NCEI Accession 0277271) |
| Abstract: | This dataset contains biological data collected at WWU during deployment lab_Acevedo at Bellingham, WA from 2005-01-01 to 2008-12-31. These data include taxon. These data were collected by Philip S Levin of National Marine Fisheries Service, Dr Jeffrey F Bromaghin of United States Geological Survey, Dr John M Kennish of University of Alaska, Anchorage, Dr Steven J Jeffries and Monique M Lance of Washington Department of Fish and Wildlife, and Dr Alejandro Acevedo-Gutierrez of Western Washington University as part of the "Responses of Seals and Sea Lions to Increased Rockfish Density (Seal_response_to_prey)" project. The Biological and Chemical Oceanography Data Management Office (BCO-DMO) submitted these data to NCEI on 2023-01-23. The following is the text of the dataset description provided by BCO-DMO: Summary of prey groups found in harbor seal scat samples from the San Juan Islands. Dataset Description: Frequency of occurrence of taxonomic groups of prey identified in harbor seal scat samples collected from 2005 to 2008, summarized by region and season. Four regions of the San Juan Islands of Washington state were sampled: Eastern Bays, Rosario Strait, San Juan Channel, and the Southern Strait of Georgia. Also see the related dataset, seal_prey_species_counts ( https://www.bco-dmo.org/dataset/3817 ), where counts are provided for individual species by season (with no distinction between sampling regions). Data and methods, including sample sizes, are described in: Lance , M. M., Chang, W.-Y., Jeffries, S. J., Pearson, S. F. & Acevedo-Gutierrez, A. 2012. Harbor seal diet in northern Puget Sound: implications for the recovery of depressed fish stocks. Marine Ecology Progress Series 464:257-271. https://doi.org/10.3354/meps09880 |
| Date received: | 20230123 |
| Start date: | 20050101 |
| End date: | 20081231 |
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| Submitting institution: | Biological and Chemical Oceanography Data Management Office |
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| Supplementary information: | Acquisition Description: From Lance et al.: From 2005 to 2008, fecal samples (scats) were collected seasonally over 3 collection periods: March to early June (‘spring’), late July to September (‘summer/fall’), and January to February (‘winter’). Scats were collected from 23 haul-out locations during daytime low tides. The sites were dispersed throughout the study area, represented various habitat types used by harbor seals, were the largest haul-outs where adequate sample sizes could be collected, and were easily accessible by boat. Two or three collection trips were made each season, with a target sample size of 60 scats per season per region. Samples were stored frozen. In the lab, samples were enclosed in fine mesh paint-strainer bags and cleaned using a washing machine or nested sieves. Hard parts were cleaned and stored dry. Prey were identified to lowest possible taxon using a dissecting microscope, reference fish bone collections, and published keys. Fish species from fecal samples were placed into 11 non-overlapping prey groups based on taxonomy. Taxonomic resolution (species vs. family or genus) was based on resolution of the prey remains. The category ‘other’ included for all remaining prey species with unweighted occurrence frequencies |
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| Metadata version: | 2 |
| Keydate: | 2023-03-30 15:20:43+00 |
| Editdate: | 2023-06-26 21:46:58+00 |