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Barents Sea food-web topology from phytoplankton to whales R. Primicerio, K. Michalsen, M. Aschan, G. Certain, P. Dalpadado, A. Dolgov, M. Fossheim, H.

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Presentation on theme: "Barents Sea food-web topology from phytoplankton to whales R. Primicerio, K. Michalsen, M. Aschan, G. Certain, P. Dalpadado, A. Dolgov, M. Fossheim, H."— Presentation transcript:

1 Barents Sea food-web topology from phytoplankton to whales R. Primicerio, K. Michalsen, M. Aschan, G. Certain, P. Dalpadado, A. Dolgov, M. Fossheim, H. Gjøsæter, C. Hansen, E. Johannesen, L. Lindal-Jørgensen, B. Planque, M. Skern-Mauritzen, M. Wiedemann Annual meeting Bergen 2011

2 Barents Sea food-web

3 Robustness Compartment- alization the degree to which subsets of species are connected with other species in the food web

4 Barents Sea food-web Robustness Compartment- alization Network analysis

5 Food web topology Compilation Species list Feeding links Barents Sea food-web

6 Food web topology Compilation Species list Feeding links Barents Sea food-web

7 Food web topology Compilation Bodini et al. 2009 Barents Sea food-web S =151 Ltot = 1001 C = 0.0442 Cbar = 0.0713

8 Food web topology Compilation Bodini et al. 2009 Barents Sea food-web

9 Food web topology Compilation Bodini et al. 2009 Barents Sea food-web Fish 35 nodes 77 links

10 Food web topology Compilation BarEcoRe Trophic-species 227 15 sea mammals 10 sea birds 88 fish 62 benthos 45 plankton Barents Sea food-web

11 Food web topology Compilation BarEcoRe Trophic-species 227 Trophic links >1150 Barents Sea food-web

12 Food web topology Analysis BarEcoRe Fish 88 nodes 305 links Barents Sea food-web

13 Food web topology Analysis Fish Barents Sea food-web Bodini et al. 2009BarEcoRe 2011

14 Conclusions BarEcoRe food-web compilation 227 species, >1150 links Comparative analysis of food-web compartmentalization Barents Sea food-web


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