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Blue Growth boundaries in novel Baltic food webs
(BONUS BLUEWEBS)
Laura Uusitalo, Marie Nordström, Bärbel Müller‐Karulis, Rüdiger Voss, Thorsten Blenckner, Christian Möllmann
BONUS‐HELCOM Conference: Research and Innovation for Sustainability
6 November 2018, Copenhagen
Image: HELCOM, 2010. Ecosystem health of the Baltic Sea 2003–2007: HELCOM Initial Holistic Assessment. Balt. Sea Environ. Proc. No. 122.
Food webs change
In the past…
Lindegren et al. 2012. Global Change Biology 18 (12): 3491-3503. DOI: 10.1111/j.1365-2486.2012.02799.x
Uusitalo et al. 2018: https://doi.org/10.1016/j.ecoinf.2018.03.003
A multi‐trophic trait‐based approach reveals ecosystem‐wide restructuring in response to local drivers and climate (in prep)L Pecuchet, M Lindegren, S Kortsch, I Jurgensone, P Margonski, S Otto, I Putnis, S Strāķe, MC Nordström
Traits data across groups on:SizeHabitatFeeding Reproduction
Integrating temporal changes in the community weighted mean traits across multiple trophic levels: phytoplankton, zooplankton, fish and benthos
• Multiple Factor Analysis: data reduction• Searches for joint variations across groups
Ecological communities
CWM traits
Dim 1 (x%) Dim 2 (x%)
Years
Multi‐trophic trait‐based changes
CWM traits
+ addition variables:Key species abundanceEnvironmental variable
Ecosystem‐wide restructuring in the trait compositions was evident in each area, from traits changes reflecting a recovery of the benthic pathway (Kattegat), to a trophic cascade (Gulf of Riga)
…and in the future
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Broadening the view for society’sneeds
? !Analyse Discuss Find integrative solutions
Drawings: © Lorena Fricke
Together with the stakeholders
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BONUS BLUEWEBS project has received funding from BONUS (Art 185), funded jointly by the EU, the Academy of Finland, Projektträger Jülich (PtJ),
Germany, the State Education Development Agency of Latvia,the National Centre for Research and Development, Poland,
and the Swedish Research Council Formas.