[MARMAM] New paper on herring as a driver for distributions of harbour porpoises and mackerel

Signe Sveegaard sign at dmu.dk
Sat Nov 17 05:40:10 PST 2012


The following paper is now available online on MEPS website (http://www.int-res.com/abstracts/meps/v468/):

Sveegaard S, Nabe-Nielsen J, Stæhr KJ, Jensen TF, Mouritsen KN, Teilmann J (2012) Spatial interactions between marine predators and their prey: herring abundance as a driver for the distributions of mackerel and harbour porpoise. MEPS 468:245-253

ABSTRACT: 
The distribution of marine predators is tightly coupled with that of their prey, and may also be affected by interactions between competing predators. In order to adopt an ecosystem approach to the management of a species, it is essential to understand these processes. In this
study, we examined whether the distributions of 2 marine predators, harbour porpoise Phocoena phocoena and mackerel Scomber scombrus, are related to the distribution of a major prey species, herring Clupea harengus, on a large spatial scale. Porpoise distribution data were obtained from
satellite-tracked harbour porpoises (1998 to 2009), while mackerel and herring distribution data were found by the annual ICES acoustic herring surveys providing data with overlapping temporal and spatial scales (2000 to 2009). We found that the 3 species were not evenly distributed
within the study area and that harbour porpoise distribution was best explained solely by the distribution of herring, while herring together with depth explained 50% of the mackerel distribution. These results underline the importance of an ecosystem approach in management plans for predatory species by including monitoring and management of main prey species.

Please send any enquiries or questions to sign at dmu.dk

Best regards 

Signe Sveegaard

PhD, researcher
Department of Bioscience
Aarhus University
Frederiksborgvej 399
 4000 Roskilde
Denmark





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