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

Krill Hotspot Formation and Phenology in the California Current Ecosystem



Details

  • Journal Title:
    Geophysical Research Letters
  • Personal Author:
  • NOAA Program & Office:
  • Description:
    In the California Current Ecosystem, krill represent a key link between primary production and higher trophic level species owing to their central position in the food web and tendency to form dense aggregations. However, the strongly advective circulation associated with coastal upwelling may decouple the timing, occurrence, and persistence of krill hotspots from phytoplankton biomass and nutrient sources. Results from a coupled physical‐biological model provide insights into fundamental mechanisms controlling the phenology of krill hotspots in the California Current Ecosystem, and their sensitivity to alongshore changes in coastal upwelling intensity. The simulation indicates that dynamics controlling krill hotspot formation, intensity, and persistence on seasonal and interannual timescales are strongly heterogeneous and related to alongshore variations in upwelling‐favorable winds, primary production, and ocean currents. Furthermore, regions promoting persistent krill hotspot formation coincide with increased observed abundance of top predators, indicating that the model resolves important ecosystem complexity and function.
  • Keywords:
  • Source:
    Geophysical Research Letters 47(13): e2020GL088039, 2020
  • DOI:
  • Pubmed Central ID:
    PMC32728303
  • Document Type:
    Journal Article
  • Place as Subject:
    California Current
  • Rights Information:
    CC BY
  • Compliance:
    PMC
  • Main Document Checksum:
    urn:sha256:0aed9172928c64381ee8f9435b52b4c2bcff5e97893198d5c57ec8d9bd545371
  • Download URL:
  • File Type:
    Filetype[PDF - 4.24 MB ]

Related Documents

PREVIOUS
ON THIS PAGE
Details Related Documents
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