U.S. flag An official website of the United States government.
Official websites use .gov

A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS

A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

i

Energetic limitations and mass mortality of Bering Sea snow crab: Interacting effects of warming and density on collapse and recovery



Details

  • Journal Title:
    Canadian Journal of Fisheries and Aquatic Sciences
  • Personal Author:
  • NOAA Program & Office:
  • Description:
    Marine heatwaves can result in mass mortality events, but the mechanisms underlying population collapse and recovery dynamics are often poorly understood. Here, we employed a comparative analysis between collapsing and noncollapsing portions of the Bering Sea snow crab population to evaluate linkages between energetic condition and population abundance during and after a recent collapse. We show that abundance declines during the collapse were associated with dramatic declines in energetic condition, and the negative impact of high population density on energetic reserves was intensified by warming during a marine heatwave. Elevated energetic condition coincided with strong recruitment post-collapse, suggesting rapid initial population recovery in the eastern Bering Sea. However, we show that cold-water habitat (≤0 °C) is critical for supporting high snow crab density in rebuilding towards a pre-collapse state. These results suggest that warming and loss of sea ice will exacerbate the risk of collapse in snow crab through energetic constraints on survival. Furthermore, we highlight the validation of an indirect energetic condition metric that will facilitate continued energetics monitoring and rapid integration into management.
  • Source:
    Canadian Journal of Fisheries and Aquatic Sciences, 82, 1-14
  • DOI:
  • ISSN:
    0706-652X ; 1205-7533
  • Format:
    pdf
  • Publisher:
    Canadian Science Publishing
  • Document Type:
    Journal Article
  • Rights Information:
    Accepted Manuscript
  • Compliance:
    Submitted
  • Main Document Checksum:
    urn:sha-512:6be15caef23ce1951e29aea82b2afda2f785863c94f381a215fe861ac9d8a4b2f9b0acc017302b9d774e5a92d0034d8721c845fb5d5c289161cda1f14aecb126
  • Download URL:
  • File Type:
    Filetype[PDF - 907.57 KB ]
PREVIOUS
ON THIS PAGE
Details
The NOAA IR serves as an archival repository of NOAA-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by NOAA or funded partners. As a repository, the NOAA IR retains documents in their original published format to ensure public access to scientific information.
BACK TO TOP