Barents Sea food-web topology from phytoplankton to whales

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Presentation transcript:

Barents Sea food-web topology from phytoplankton to whales Annual meeting Bergen 2011 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

Barents Sea food-web

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

Barents Sea food-web Robustness Compartment- alization Network analysis Food web property quantifiable just using the basic network structure (“topology”) of feeding interactions.

Barents Sea food-web Food web topology Compilation Species list Feeding links Food web properties quantifiable just using the basic network structure (“topology”) of feeding interactions.

Barents Sea food-web Food web topology Compilation Species list Feeding links Food web properties quantifiable just using the basic network structure (“topology”) of feeding interactions.

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

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

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

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

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

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

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

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