alexa Population dynamics of exploited fish stocks at low population levels.
Geology & Earth Science

Geology & Earth Science

Journal of Geography & Natural Disasters

Author(s): Myers RA, Barrowman NJ, Hutchings JA, Rosenberg AA

Abstract Share this page

Abstract Models of population dynamics in which per capita reproductive success declines at low population levels (variously known as depensation, the Allee effect, and inverse density-dependence) predict that populations can have multiple equilibria and may suddenly shift from one equilibrium to another. If such depensatory dynamics exist, reduced mortality may be insufficient to allow recovery of a population after abundance has been severely reduced by harvesting. Estimates of spawner abundance and number of surviving progeny for 128 fish stocks indicated only 3 stocks with significant depensation. Estimates of the statistical power of the tests strengthen the conclusion that depensatory dynamics are not apparent for fish populations at the levels studied. This article was published in Science and referenced in Journal of Geography & Natural Disasters

Relevant Expert PPTs

Relevant Speaker PPTs

Recommended Conferences

  • 3rd World Congress on GIS and Remote Sensing
    September 20-21, 2017 Charlotte, North Carolina, USA

Relevant Topics

Peer Reviewed Journals
 
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
 
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

 
© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version
adwords