Final Report: Temperature, phenology, and embryo survival in Western Alaska sockeye salmon populations: the potential for adaptation to a warming worl

Metadata Updated: November 12, 2020

This report is structured around the specific objectives in the format of three stand-alone manuscripts that are in the process of submission to peer-reviewed journals. The first manuscript includes objectives 1-2, the second manuscript addresses objective 3, and the final manuscript objective 4. The overarching goal of the proposal was to understand how both recently experienced and projected water temperatures might influence population-specific patterns of embryo incubation, timing of hatching and fry emergence, and survival of sockeye salmon embryos. Additionally, we sought to explore the potential for adaptation in a heritable threshold life history trait that shapes whether an individual migrates to the ocean after either one or two years of freshwater rearing, and the demographic consequences of that evolution in the context of a changing climate. The specific objectives of the project were: 1) to use information on spawning timing of discrete populations and water temperatures to predict the timing of juvenile hatching and fry emergence under the range of conditions observed in the Kvichak and Wood River watersheds; 2) predict changes in water temperatures likely to be experienced by salmon populations in Iliamna Lake using downscaled Global Circulation Models under plausible scenarios of CO2 emissions through the year 2099; 3) conduct a controlled laboratory experiment to quantify the population-specific functional responses between timing of hatching and embryo survival under scenarios of freshwater warming; and 4) assess probabilities of persistence and likelihood for life history adaptation (smolting size threshold) to warming temperatures using individual-based eco-evolutionary models parameterized based on representative sockeye salmon populations in the Kvichak watershed.

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License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Metadata Date 2019-09-09T04:25:47-08:00
Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020
Reference Date(s) December 31, 2016 (released)
Frequency Of Update unknown

Metadata Source

Harvested from DOI Open Data

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Resource Type Report
Metadata Date 2019-09-09T04:25:47-08:00
Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020
Reference Date(s) December 31, 2016 (released)
Responsible Party (Point of Contact); Western Alaska Landscape Conservation Cooperative (Point of Contact, Publisher)
Contact Email
Guid a66cb9c8-70d1-4742-8aec-0e8069bb9abf
Access Constraints
Bbox East Long -157.71906965375
Bbox North Lat 60.602972601118
Bbox South Lat 59.237611638781
Bbox West Long -161.08088606
Coupled Resource
Frequency Of Update unknown
Licence While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, the Western Alaska Landscape Conservation Cooperative cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. The Western Alaska Landscape Conservation Cooperative makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty., null
Metadata Language
Metadata Type geospatial
Progress completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 2014-06-01T00:00:00
Temporal Extent End 2016-12-31T00:00:00

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