Ecological Network Indicators of Ecosystem Status and Change in the Baltic Sea

Author(s): Tomczak MT, Heymans JJ, Yletyinen J, Niiranen S, Otto SA, et al.
In: PLoS ONE 8(10): e75439. doi:10.1371/journal.pone.0075439
Year: 2013
Type: Journal / article
Theme affiliation: Marine
Link to centre authors: Blenckner, Thorsten, Niiranen, Susa
Full reference: Tomczak MT, Heymans JJ, Yletyinen J, Niiranen S, Otto SA, et al. (2013) Ecological Network Indicators of Ecosystem Status and Change in the Baltic Sea. PLoS ONE 8(10): e75439. doi:10.1371/journal.pone.0075439

Summary

Several marine ecosystems under anthropogenic pressure have experienced shifts from one ecological state to another. In the central Baltic Sea, the regime shift of the 1980s has been associated with food-web reorganization and redirection of energy flow pathways. These long-term dynamics from 1974 to 2006 have been simulated here using a food-web model forced by climate and fishing. Ecological network analysis was performed to calculate indices of ecosystem change. The model replicated the regime shift. The analyses of indicators suggested that the system’s resilience was higher prior to 1988 and lower thereafter. The ecosystem topology also changed from a web-like structure to a linearized food-web.

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