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Advances on modelling spatial-temporal ecosystem dynamics in the Mediterranean Sea

AutorPiroddi, Chiara ; Steenbeek, Jeroen ; Liquete, Camino; Coll, Marta ; Moy, Diego Macias; Giannoulaki, Marianna; Christensen, Villy
Fecha de publicación11-nov-2014
CitaciónFisheries Centre Research Reports 22(3): 143-144 (2014)
Ecopath 30 Years Conference Proceedings: Extended Abstracts: 143-144 (2014)
ResumenMarine ecosystems provide an essential contribution to human wellbeing in multiple ways and yet they are pressured by a diversified number of anthropogenic stressors which we know little about, particularly in relation to the ways threats affect marine species and ecosystems. In this context, we used the new temporal and spatial module (Steenbeek et al., 2013) and the new habitat capacity model (Christensen et al., Submitted) of the Ecopath with Ecosim software, focusing on the Mediterranean Sea, to assess the cumulative impact of fishing activity and changes in environmental conditions (e.g., SST, salinity, primary production) on the whole ecosystem. In particular the model, representing the year 1950s, consisted of about 100 functional groups and 7 types of fishing fleets and was divided it in 4 sub-models following the four sub-regions division given by the Marine Strategy Framework Directive (MSFD; 2008/56/EC): 1) Western Mediterranean Sea (W); 2) Adriatic Sea (A); 3) Ionian and Central Mediterranean Sea (I); 4) Aegean and Levantine Sea (E) to account for differences in environmental and biological characteristics (Piroddi et al., Submitted). The Ecopath model was first fitted to time series of observed data. Then, by using the habitat capacity framework (Figure 1), the model was run to evaluate species/functional groups distribution based on fishing impact and changes in the environment. The aim of the study was to quantify, using spatial and temporal dynamic simulations, ecosystem dynamics to assess the exploitation status of the Mediterranean Sea and explore different management policies and future scenarios. Quantifying the impact of important threats (e.g., climate change and fishing pressure) on a system that is defined ‘under siege’ (Coll et al., 2012) becomes critically important for ensuring the sustainability of marine resources and the services they provide to humans, and the conservation of this vulnerable ecosystem
DescripciónConference and workshops Ecopath 30 years – Modelling ecosystem dynamics: beyond boundaries with EwE, 4-14 November 2014, Barcelona, Spain.-- 2 pages, 1 figure
Versión del editorhttp://ewe30.ecopathinternational.org/proceedings/
Identificadoresissn: 1198-6727
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