Flanders Marine Institute

Platform for marine research

In:

IMIS

Publications | Institutes | Persons | Datasets | Projects | Maps
report an error in this recordbasket (0): add | show Printer-friendly version

Lumpers or splitters? Evaluating recovery and management plans for metapopulations of herring
Kell, L.T.; Dickey-Collas, M.; Hintzen, N.T.; Nash, R.D.M.; Pilling, G.M.; Roel, B.A. (2009). Lumpers or splitters? Evaluating recovery and management plans for metapopulations of herring. ICES J. Mar. Sci./J. Cons. int. Explor. Mer 66(8): 1776-1783
In: ICES Journal of Marine Science. Academic Press: Oxford. ISSN 1054-3139, more
Peer reviewed article

Available in Authors 

Keywords
    Clupeoid fisheries; Fishery management; Metapopulation; Marine

Authors  Top 
  • Kell, L.T.
  • Dickey-Collas, M., more
  • Hintzen, N.T., more
  • Nash, R.D.M.
  • Pilling, G.M.
  • Roel, B.A.

Abstract
    The long-term management of a stock representing a metapopulation has been simulated in a case study loosely based upon herring to the west of the British isles, where stocks are currently assessed and managed by management area, although there is evidence of mixing between stocks (in terms of connectivity, migrations, and exploitation). The simulations evaluate scientific advice (based on virtual population analysis, VPA) and the sustainability of fishing under two population-structure scenarios, corresponding either to discrete stocks, which only mix on the feeding grounds, or where diffusion between stocks takes place. The ability of stock assessment to monitor stock status and exploitation levels was evaluated for defining stocks based on fishing areas and for stocks that combined fishing areas. The study showed that assessment based on VPA of the metapopulation could fail to detect overexploitation of stocks and fail to detect and distinguish between the effects of exploitation and regime shifts.

 Top | Authors