Document of bibliographic reference 233822

BibliographicReference record

Type

Bibliographic resource

Type of document

Journal article

BibLvlCode

AS

Title

The effects of survey design and circulation pattern on the perceived abundance of herring larvae: a case study for Norwegian spring spawning herring (Clupea harengus)

Abstract

A larval survey is used in the annual assessment as an index of the spawning stock size of Norwegian spring spawning herring (Clupea harengus). To test how inter-annual fluctuations in circulation pattern, survey design and execution of the survey affected the larval abundance estimate we conducted simulated surveys using a model framework with idealized assumptions to model larval drift and sampled larvae using several realistic survey scenarios. The results suggest that inter-annual variations in circulation pattern alone can have a profound effect on the perception of larvae abundance and that the direction of the survey (north to south versus south to north) can have a significant effect on the estimated abundance, particularly if hatching occurs over a short period of time. Additionally, disruptions to a continuous survey schedule also have an effect and, as such, sampling strategies in case of disruption to the survey are proposed.

WebOfScience code

https://www.webofscience.com/wos/woscc/full-record/WOS:000306736000004

Bibliographic citation

Stenevik, E.K.; Nash, R.D.M.; Vikebø, F.; Fossum, P.; Bakkeplass, K. (2012). The effects of survey design and circulation pattern on the perceived abundance of herring larvae: a case study for Norwegian spring spawning herring (Clupea harengus). Fish. Oceanogr. 21(5): 363–373. http://dx.doi.org/10.1111/j.1365-2419.2012.00631.x

Topic

Marine

Is peer reviewed

true