A compilation and meta-analysis of salmon diet data from the North Pacific Ocean
department or school: Science, Faculty of
department or school: Oceans and Fisheries, Institute for the
data provider: DSpace
degree campus: UBCV
creator: Graham, Caroline
issued: 2020-08-31T15:13:30Z
issued: 2020
related degree: Master of Science - MSc
degree grantor: University of British Columbia
description: Salmon migrate thousands of kilometers through dynamic ecosystems of the North Pacific Ocean, however, their open ocean life phase is poorly understood with limited research comparing salmon trophic ecology across the entire basin. Understanding the marine trophic ecology of salmon has the potential to reveal information about ocean conditions, competition, prey abundance, as well as salmon health and survival. The first goal of this research was to build an open-access database to centralize Pacific salmon diet data using a standardized format (âNorth Pacific Marine Salmon Diet Databaseâ). This database was then populated with an initial data set that came from 62 sources identified through a systematic literature review, targeting peer reviewed and gray literature from time periods with high research activity: 1959â1969 and 1987â1997. The second goal was to examine spatial and interspecies differences in diet and trophic niche for chum, pink and sockeye salmon across the North Pacific between 1959 and 1969, a period during a negative phase of the Pacific Decadal Oscillation and prior to significant hatchery enhancement. In the Western Subarctic, all species tended to consume zooplankton and prey availability was higher than the Eastern Subarctic. In the Gulf of Alaska and Eastern Subarctic, interspecies differences in diet were most apparent with chum and sockeye specializing on zooplankton and micronekton, respectively, while pink ate a mixture of zooplankton and micronekton. In the Bering Sea chum ate zooplankton while sockeye and pink alternated between zooplankton and micronekton. In addition to the large-scale trophic patterns, these data revealed novel fine-scale spatial trophic patterns, including latitudinal, onshore-offshore, and cross-gyre gradients. These results showed that pink were more generalist consumers, and their diets may be a better reflection of overall prey presence and abundance in the environment. Conversely, chum and sockeye were more spe…
aggregated CHO: https://circle.library.ubc.ca/rest/handle/2429/75751
note: A COMPILATION AND META-ANALYSIS OF SALMON DIET DATA FROM THE NORTH PACIFIC OCEAN by Caroline Graham B.A., Grinnell College, 2016 A THESIS SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF SCIENCE in THE FACULTY OF GRADUATE AND POSTDOCTORAL STUDIES (Oceans and Fisheries) THE UNIVERSITY OF BRITISH COLUMBIA (Vancouver) August 2020 © Caroline Graham, 2020 ii The following individuals certify that they have read, and recommend to the Faculty of Graduate and Postdoctoral Studies for acceptance, the thesis entitled: A compilation and meta-analysis of salmon diet data from the North Pacific Ocean submitted by Caroline Graham in partial fulfillment of the requirements for the degree of Master of Science in Oceans and Fisheries Examining Committee: Brian P. V. Hunt, Institute for the Oceans and Fisheries Supervisor Evgeny A. Pakhomov, Earth, Ocean and Atmospheric Sciences Supervisory Committee Member William W. L. Cheung, Institute for the Oceans and Fisheries Supervisory Committee Member Scott G. Hinch, Forest and Conservation Sciences Additional Examiner iii Abstract Salmon migrate thousands of kilometers through dynamic ecosystems of the North Pacific Ocean, however, their open ocean life phase is poorly understood with limited research comparing salmon trophic ecology across the entire basin. Understanding the marine trophic ecology of salmon has the potential to reveal information about ocean conditions, competition, prey abundance, as well as salmon health and survival. The first goal of this research was to build an open-access database to centralize Pacific salmon diet data using a standardized format (âNorth Pacific Marine Salmon Diet Databaseâ). This database was then populated with an initial data set that came from 62 sources identified through a systematic literature review, targeting peer reviewed and gray literature from time periods with high research activity: 1959â1969 and 1987â1997. The second goal was to examine spatial and …
has type: Thesis/Dissertation
date issued: 2020-11
is shown at: 10.14288/1.0394116
language: eng
degree discipline: Oceans and Fisheries
provider: Vancouver : University of British Columbia Library
publisher: University of British Columbia
rights: Attribution-NonCommercial-NoDerivatives 4.0 International
rights URI: http://creativecommons.org/licenses/by-nc-nd/4.0/
scholar level: Graduate
type: Text
identifier URI: http://hdl.handle.net/2429/75751