Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Stock-specific spatial overlap among seabird predators and Columbia River juvenile Chinook Salmon suggests a mechanism for predation during early marine residence

Journal Article · · Marine and Coastal Fisheries
DOI:https://doi.org/10.1002/mcf2.10318· OSTI ID:2484240

Abstract Objective

Because predation is thought to be the primary source of natural mortality for juvenile salmon first entering the ocean, we sought to identify regions where, on average, stock-specific spatial overlap between the distribution of threatened and endangered juvenile Chinook Salmon Oncorhynchus tshawytscha and abundant fish-eating seabirds (common murres Uria aalge and sooty shearwaters Ardenna grisea) suggests the greatest potential for ocean predation risk to juvenile Chinook Salmon.

Methods

The relative abundance and spatial distribution of seabird predators and juvenile Chinook Salmon were quantified as part of long-term ecosystem surveys during May 2003–2012 and June 2003–2022. Genetic stock identification methods were used to assign individual fish to their respective stock groups. Stock-specific species distribution models then generated maps and indices of average annual spatial overlap between predators and prey within the survey area.

Result

There is unequivocal evidence for spatial overlap between common murres, sooty shearwaters, and five genetic groups of interior and lower Columbia River juvenile Chinook Salmon. We found strongly positive (≥0.70) spatial correlations between predator and prey densities in both May and June, although spatial overlap was, in general, greater during May. The region of highest spatial overlap occurred on the inner continental shelf between the Columbia River mouth (46.2°N) and Grays Harbor (47.0°N), a region at the beginning of the juvenile salmon migratory pathway that is strongly affected by freshwater outflow from the river.

Conclusion

Our findings support the idea that ocean avian predation during early marine residence has the potential to affect marine survival of juvenile Chinook Salmon and should be further investigated to better inform and implement ecological models and possible recovery actions for Chinook Salmon populations of the Columbia River basin.

</sec>

Sponsoring Organization:
USDOE
OSTI ID:
2484240
Journal Information:
Marine and Coastal Fisheries, Journal Name: Marine and Coastal Fisheries Journal Issue: 6 Vol. 16; ISSN 1942-5120
Publisher:
Oxford University PressCopyright Statement
Country of Publication:
Country unknown/Code not available
Language:
English

References (70)

Life in the Fast Lane: Feeding and Growth of Juvenile Steelhead and Chinook Salmon in Main‐Stem Habitats of the Columbia River Estuary journal August 2022
Going deep: common murres dive into frigid water for aggregated, persistent and slow-moving capelin journal March 2009
A critical size and period hypothesis to explain natural regulation of salmon abundance and the linkage to climate and climate change journal January 2001
Summer-time use of west coast US National Marine Sanctuaries by migrating sooty shearwaters (Puffinus griseus) journal November 2012
A bi-directional river plume: The Columbia in summer journal September 2005
Physical and biological variables affecting seabird distributions during the upwelling season of the northern California Current journal January 2005
Marine bird aggregations associated with the tidally-driven plume and plume fronts of the Columbia River journal September 2014
Valuation of fish production services in river basins: A case study of the Columbia River journal April 2017
Diel differences in surface trawl fish catches off Oregon and Washington journal March 2005
Guidance for decisions using the Vector Autoregressive Spatio-Temporal (VAST) package in stock, ecosystem, habitat and climate assessments journal February 2019
Consumption of juvenile chum salmon by a seabird species during early sea life journal February 2020
A conceptual model of the strongly tidal Columbia River plume journal October 2009
Environmental drivers and reproductive consequences of variation in the diet of a marine predator journal June 2015
Environmental conditions and prey-switching by a seabird predator impact juvenile salmon survival journal October 2017
Abundance and distribution of pelagic piscivorous fishes in the Columbia River plume during spring/early summer 1998–2003: Relationship to oceanographic conditions, forage fishes, and juvenile salmonids journal January 2006
Patterns and processes in the California Current System journal December 2009
Multiple trophic levels fueled by recirculation in the Columbia River plume journal September 2010
Consequences of foraging trip duration on provisioning behaviour and fledging condition of common murres Uria aalgae journal March 2003
River plumes as a source of large-amplitude internal waves in the coastal ocean journal September 2005
Migratory shearwaters integrate oceanic resources across the Pacific Ocean in an endless summer journal August 2006
Life History and Seasonal Stock‐Specific Ocean Migration of Juvenile Chinook Salmon journal July 2011
Systemwide Evaluation of Avian Predation on Juvenile Salmonids from the Columbia River Based on Recoveries of Passive Integrated Transponder Tags journal July 2012
Relative Vulnerability of PIT-Tagged Subyearling Fall Chinook Salmon to Predation by Caspian Terns and Double-Crested Cormorants in the Columbia River Estuary journal September 2013
Early Ocean Dispersal Patterns of Columbia River Chinook and Coho Salmon journal December 2013
Monitoring Stock-Specific Abundance, Run Timing, and Straying of Chinook Salmon in the Columbia River Using Genetic Stock Identification (GSI) journal December 2013
Estimating regional population size and annual harvest intensity of the sooty shearwater in New Zealand journal January 2009
Genetic Identification of Chinook Salmon: Stock-Specific Distributions of Juveniles along the Washington and Oregon Coasts journal January 2015
Stock-Specific Size and Timing at Ocean Entry of Columbia River Juvenile Chinook Salmon and Steelhead: Implications for Early Ocean Growth journal January 2015
Counting Seabirds at Sea from Ships: A Review of Methods Employed and a Suggestion for a Standardized Approach journal July 1984
Overlap in Diets and Foraging of Common Murres (Uria Aalge) and Rhinoceros Auklets (Cerorhinca Monocerata) After the Breeding Season journal July 2005
Seasonal Movements and Pelagic Habitat Use of Murres and Puffins Determined by Satellite Telemetry journal February 2000
Influence of the Columbia River plume (USA) on the vertical and horizontal distribution of mesozooplankton over the Washington and Oregon shelf journal January 2008
Geostatistical delta-generalized linear mixed models improve precision for estimated abundance indices for West Coast groundfishes journal January 2015
Early ocean distribution of juvenile Chinook salmon in an upwelling ecosystem journal January 2016
Joint dynamic species distribution models: a tool for community ordination and spatio-temporal monitoring: Joint dynamic species distribution models journal May 2016
A review of methods for quantifying spatial predator–prey overlap journal August 2019
The vertical distribution of juvenile salmon (Oncorhynchus spp.) and associated fishes in the Columbia River plume journal November 2004
Foraging arena theory: Foraging arena theory journal July 2011
Divergent life-history races do not represent Chinook salmon coast-wide: the importance of scale in Quaternary biogeography journal March 2013
Disentangling bottom-up and top-down effects on survival during early ocean residence in a population of Chinook salmon ( Oncorhynchus tshawytscha ) journal April 2013
Predator–prey interactions influenced by a dynamic river plume journal September 2017
Bayesian inference from the conditional genetic stock identification model journal April 2019
The Structure of Lizard Communities journal November 1973
Estimates of Freshwater Discharge from Continents: Latitudinal and Seasonal Variations journal December 2002
Characterizing juvenile salmon predation risk during early marine residence journal February 2021
An updated end-to-end ecosystem model of the Northern California Current reflecting ecosystem changes due to recent marine heatwaves journal January 2024
Recovery Planning for Endangered Species Act-listed Pacific Salmon: Using Science to Inform Goals and Strategies journal September 2007
Development of a Standardized DNA Database for Chinook Salmon journal November 2007
Salmon and Steelhead Abundance in the Columbia River in the Nineteenth Century journal September 1986
Colony Size and Diet Composition of Piscivorous Waterbirds on the Lower Columbia River: Implications for Losses of Juvenile Salmonids to Avian Predation journal May 2002
Marine Distributions of Chinook Salmon from the West Coast of North America Determined by Coded Wire Tag Recoveries journal January 2010
Model Estimation of Energy Flow in Oregon Coastal Seabird Populations journal January 1975
Migration Routes of Sooty Shearwaters in the Pacific Ocean journal May 1999
Effects of Colony Relocation on Diet and Productivity of Caspian Terns journal July 2002
A Range Finder for Pelagic Bird Censusing journal April 1981
Diving Depths of Four Alcids journal April 1985
Maximum dive depths of eight New Zealand Procellariiformes, including Pterodroma species journal January 2008
Spatial interaction between seabirds and prey: review and synthesis journal September 2009
Spatiotemporal habitat use by breeding sooty shearwaters Puffinus griseus journal September 2009
Association of predators and prey at frontal features in the California Current: competition, facilitation, and co-occurrence journal September 2009
Timing of forage fish seasonal appearance in the Columbia River plume and link to ocean conditions journal November 2010
Annual coastal migration of juvenile Chinook salmon: static stock-specific patterns in a highly dynamic ocean journal March 2012
Trade-offs in prey quality and quantity revealed through the behavioral compensation of breeding seabirds journal July 2012
Foraging behaviour of common murres in the Baltic Sea, recorded by simultaneous attachment of GPS and time-depth recorder devices journal February 2013
Evaluating the influence of environmental factors on yearling Chinook salmon survival in the Columbia River plume (USA) journal January 2014
Selective occupancy of a persistent yet variable coastal river plume by two seabird species journal April 2018
Foraging by murres (Uria spp.) at tidal fronts surrounding the Pribilof Islands, Alaska, USA journal January 1996
Seabird attraction to fishing vessels is a local process journal January 2001
Columbia River plume fronts. I. Hydrography, zooplankton distribution, and community composition journal January 2005
Columbia River plume fronts. II. Distribution, abundance, and feeding ecology of juvenile salmon journal January 2005

Similar Records

Characterizing juvenile salmon predation risk during early marine residence
Journal Article · Thu Feb 18 23:00:00 EST 2021 · PLoS ONE · OSTI ID:1766573

Stock-Specific Size and Timing at Ocean Entry of Columbia River Juvenile Chinook Salmon and Steelhead: Implications for Early Ocean Growth
Journal Article · Mon Sep 21 00:00:00 EDT 2015 · Marine and Coastal Fisheries · OSTI ID:2506782

Predation by northern squawfish on live and dead juvenile chinook salmon
Journal Article · Tue Sep 01 00:00:00 EDT 1992 · Transactions of the American Fisheries Society; (United States) · OSTI ID:6362376

Related Subjects