Access

You are not currently logged in.

Access JSTOR through your library or other institution:

login

Log in through your institution.

If You Use a Screen Reader

This content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Journal Article

Direct and indirect climate forcing in a multi-species marine system

Leif Christian Stige, Geir Ottersen, Padmini Dalpadado, Kung-Sik Chan, Dag Ø. Hjermann, Dmitry L. Lajus, Natalia A. Yaragina and Nils Chr. Stenseth
Proceedings: Biological Sciences
Vol. 277, No. 1699 (22 November 2010), pp. 3411-3420
Published by: Royal Society
Stable URL: http://www.jstor.org/stable/25747440
Page Count: 10

You can always find the topics here!

Topics: Climate models, Herring, Zooplankton, Haddock, Species, Modeling, Materials, Seas, Juvenile stages, Marine fishes
Were these topics helpful?
See something inaccurate? Let us know!

Select the topics that are inaccurate.

Cancel
  • Read Online (Free)
  • Add to My Lists
  • Cite this Item
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Direct and indirect climate forcing in a multi-species marine system
Preview not available

Abstract

Interactions within and between species complicate quantification of climate effects, by causing indirect, often delayed, effects of climate fluctuations and compensation of mortality. Here we identify direct and indirect climate effects by analysing unique Russian time-series data from the Norwegian Sea—Barents Sea ecosystem on the first life stages of cod, capelin, herring and haddock, their predators, competitors and zooplanktonic prey. By analysing growth and survival from one life stage to the next (eggs—larvae—juveniles—recruits), we find evidence for both bottom-up, direct and top-down effects of climate. Ambient zooplankton biomass predicts survival of all species, whereas ambient temperature mainly affects survival through effects on growth. In warm years, all species experienced improved growth and feeding conditions. Cohorts born following a warm year will, however, experience increased predation and competition because of increased densities of subadult cod and herring, leading to delayed climate effects. While climate thus affects early growth and survival through several mechanisms, only some of the identified mechanisms were found to be significant predictors of population growth. In particular, our findings exemplify that climate impacts are barely propagated to later life stages when density dependence is strong.

Page Thumbnails

  • Thumbnail: Page 
3411
    3411
  • Thumbnail: Page 
3412
    3412
  • Thumbnail: Page 
3413
    3413
  • Thumbnail: Page 
3414
    3414
  • Thumbnail: Page 
3415
    3415
  • Thumbnail: Page 
3416
    3416
  • Thumbnail: Page 
3417
    3417
  • Thumbnail: Page 
3418
    3418
  • Thumbnail: Page 
3419
    3419
  • Thumbnail: Page 
3420
    3420
Part of Sustainability