Identification of potential target levels for Central Baltic Sea fishing mortalities, taking multispecies interactions into account

Extended abstract

Morten Vinther, Stefan Neuenfeldt, Margit Eero, Michele Casini, Henrik Sparholt

Research output: Contribution to conferenceConference abstract for conferenceResearch

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Abstract

The main biological interactions between Baltic cod, herring and sprat have been modelled in a stochastic multispecies (SMS) model. Based on this, a simple approach has been developed to quantify candidates for FMSY proxies (fishing mortality that produces the maximum sustainable yield) in a multispecies context. Multispecies FMSY is higher for cod than single‐species FMSY values,
due to cannibalism. The actual FMSY for herring and sprat, and cod’s influence on prey yield, depend on assumptions about density‐dependent growth and spatial overlap between predator and prey. The results are ready for implementation in management, however, the multispecies aspects depend on predation data mainly from the 1980s and there is an urgent need to update the
information base. The current productivity regime and spatial distribution of fish stocks in the Baltic is different from the earlier period when predation data was collected. Also, prey‐to‐predator feedback mechanisms should be more understood before implementation in management
Original languageEnglish
Publication date2012
Publication statusPublished - 2012

Cite this

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title = "Identification of potential target levels for Central Baltic Sea fishing mortalities, taking multispecies interactions into account: Extended abstract",
abstract = "The main biological interactions between Baltic cod, herring and sprat have been modelled in a stochastic multispecies (SMS) model. Based on this, a simple approach has been developed to quantify candidates for FMSY proxies (fishing mortality that produces the maximum sustainable yield) in a multispecies context. Multispecies FMSY is higher for cod than single‐species FMSY values, due to cannibalism. The actual FMSY for herring and sprat, and cod’s influence on prey yield, depend on assumptions about density‐dependent growth and spatial overlap between predator and prey. The results are ready for implementation in management, however, the multispecies aspects depend on predation data mainly from the 1980s and there is an urgent need to update the information base. The current productivity regime and spatial distribution of fish stocks in the Baltic is different from the earlier period when predation data was collected. Also, prey‐to‐predator feedback mechanisms should be more understood before implementation in management",
author = "Morten Vinther and Stefan Neuenfeldt and Margit Eero and Michele Casini and Henrik Sparholt",
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Identification of potential target levels for Central Baltic Sea fishing mortalities, taking multispecies interactions into account : Extended abstract. / Vinther, Morten; Neuenfeldt, Stefan; Eero, Margit; Casini, Michele; Sparholt, Henrik.

2012.

Research output: Contribution to conferenceConference abstract for conferenceResearch

TY - ABST

T1 - Identification of potential target levels for Central Baltic Sea fishing mortalities, taking multispecies interactions into account

T2 - Extended abstract

AU - Vinther, Morten

AU - Neuenfeldt, Stefan

AU - Eero, Margit

AU - Casini, Michele

AU - Sparholt, Henrik

PY - 2012

Y1 - 2012

N2 - The main biological interactions between Baltic cod, herring and sprat have been modelled in a stochastic multispecies (SMS) model. Based on this, a simple approach has been developed to quantify candidates for FMSY proxies (fishing mortality that produces the maximum sustainable yield) in a multispecies context. Multispecies FMSY is higher for cod than single‐species FMSY values, due to cannibalism. The actual FMSY for herring and sprat, and cod’s influence on prey yield, depend on assumptions about density‐dependent growth and spatial overlap between predator and prey. The results are ready for implementation in management, however, the multispecies aspects depend on predation data mainly from the 1980s and there is an urgent need to update the information base. The current productivity regime and spatial distribution of fish stocks in the Baltic is different from the earlier period when predation data was collected. Also, prey‐to‐predator feedback mechanisms should be more understood before implementation in management

AB - The main biological interactions between Baltic cod, herring and sprat have been modelled in a stochastic multispecies (SMS) model. Based on this, a simple approach has been developed to quantify candidates for FMSY proxies (fishing mortality that produces the maximum sustainable yield) in a multispecies context. Multispecies FMSY is higher for cod than single‐species FMSY values, due to cannibalism. The actual FMSY for herring and sprat, and cod’s influence on prey yield, depend on assumptions about density‐dependent growth and spatial overlap between predator and prey. The results are ready for implementation in management, however, the multispecies aspects depend on predation data mainly from the 1980s and there is an urgent need to update the information base. The current productivity regime and spatial distribution of fish stocks in the Baltic is different from the earlier period when predation data was collected. Also, prey‐to‐predator feedback mechanisms should be more understood before implementation in management

M3 - Conference abstract for conference

ER -