Data from: Shifts in North Sea forage fish productivity and potential fisheries yield ...
Forage fish populations support large scale fisheries and are key components of marine ecosystems across the world, linking secondary production to higher trophic levels. While climate-induced changes in the North Sea zooplankton community are described and documented in literature, the associated b...
| Main Authors: | , , , , |
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| Format: | Dataset |
| Language: | English |
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Dryad
2018
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.5061/dryad.tq1f7 https://datadryad.org/stash/dataset/doi:10.5061/dryad.tq1f7 |
| Summary: | Forage fish populations support large scale fisheries and are key components of marine ecosystems across the world, linking secondary production to higher trophic levels. While climate-induced changes in the North Sea zooplankton community are described and documented in literature, the associated bottom-up effects and consequences for fisheries remain largely unidentified. We investigated the temporal development in forage fish productivity and the associated influence on fisheries yield of herring, sprat, Norway pout and sandeel in the North Sea. Using principal component analysis, we analysed 40 years of recruitment success and growth proxies to reveal changes in productivity and patterns of synchroneity across stocks (i.e. functional complementarity). The relationship between forage fish production and Calanus finmarchicus (an indicator of climate change) was also analysed. We used a population model to demonstrate how observed shifts in productivity affected total forage fish biomass and fisheries ... : Caclulating the finmarchicus index for Fig3Caclulating the finmarchicus index for Fig3Figure3Data used in Fig. 3Length_and_Recruitment_anomaly_data_Fig1_and_Fig2Data used in Figure 1 and 2 ... |
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