Salmon vulnerability maps - Effect of Climate Change on Salmon Population Vulnerability

Metadata Updated: March 21, 2016

  1. Steelhead (Oncorhynchus mykiss) and other Pacific salmon are threatened by unsustainable levels of harvest, genetic introgression from hatchery stocks and degradation or loss of freshwater habitat. Projected climate change is expected to further stress salmon through increases in stream temperatures and altered stream flows.
  2. We demonstrate a spatially explicit method for assessing salmon vulnerability to projected climatic changes (scenario for the years 20302059), applied here to steelhead salmon across the entire Pacific Northwest (PNW). We considered steelhead exposure to increased temperatures and more extreme high and low flows during four of their primary freshwater life stages: adult migration, spawning, incubation and rearing. Steelhead sensitivity to climate change was estimated on the basis of their regulatory status and the condition of their habitat. We assessed combinations of exposure and sensitivity to suggest actions that may be most effective for reducing steelhead vulnerability to climate change.
  3. Our relative ranking of locations suggested that steelhead exposure to increases in temperature will be most widespread in the southern Pacific Northwest, whereas exposure to substantial flow changes will be most widespread in the interior and northern Pacific Northwest. There were few locations where we projected that steelhead had both relatively low exposure and sensitivity to climate change.
  4. Synthesis and applications. There are few areas where habitat protection alone is likely to be sufficient to conserve steelhead under the scenario of climate change considered here. Instead, our results suggest the need for coordinated, landscape-scale actions that both increase salmon resilience and ameliorate climate change impacts, such as restoring connectivity of floodplains and high-elevation habitats.

Salmon gridded data for PNW.

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Metadata Date 2016-03-05T06:14:37.282-05:00
Metadata Created Date September 26, 2015
Metadata Updated Date March 21, 2016
Reference Date(s) (publication)
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Harvested from NOAA CSW Harvest Source

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Resource Type Dataset
Metadata Date 2016-03-05T06:14:37.282-05:00
Metadata Created Date September 26, 2015
Metadata Updated Date March 21, 2016
Reference Date(s) (publication)
Responsible Party Northwest Fisheries Science Center (Point of Contact)
Contact Email
Access Constraints Access Constraints: NA | Use Constraints: Disclaimer - 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, NOAA 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. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.
Bbox East Long -122.2962
Bbox North Lat 47.6549
Bbox South Lat 47.6449
Bbox West Long -122.3062
Coupled Resource
Frequency Of Update
Guid gov.noaa.nmfs.inport:18013
Harvest Object Id 89ac363d-0a0b-4f76-bc54-e16c3e7e40ac
Harvest Source Id 2aed8e29-fc5b-4cde-aa66-fb1118fd705e
Harvest Source Title NOAA CSW Harvest Source
Metadata Language eng
Metadata Type geospatial
Progress onGoing
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 2010-01-01
Temporal Extent End 2013-09-30

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