Multiscale spatial distribution of macrofauna response to fishery pressure


Contact
dario.fiorentino [ at ] awi.de

Abstract

Trawling is one of the most damaging activities for fauna living at the ocean resulting in simultaneous pulse and chronic impacts on benthic communities on multiple spatio-temporal scales. Recently, high quality Vessel Monitoring by Satellite (VMS) data provides spatio-temporal information of swept area by fishery trawlers. Using this huge amount of information in combination with about 20 environmental descriptors, we aim to tease apart the effect of species endogenous features (i.e. dispersal capability) and exogenous factors (i.e. environmental conditions) on the fauna responses to fishery and its related spatial scales. We analyse data of 300 grab-samples taken in the German Bight (North Sea), encompassing 140 macrobenthic species collected on a regular grid over an area of about 8000 km2. We use Moran Eigenvector Maps to model patterns of potential connectivity between locations and shed light on which spatial scales fisheries, environmental characteristics, and macrobenthos are linked. Finally, we show maps of fauna response to fishery. We argue that despite the importance of proper quantification of fishing pressure and other human activities, shedding light on the effects and response to such activities is crucial for a sound understanding of the processes that shape ecosystems and diversity distribution.



Item Type
Conference (Talk)
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Primary Division
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Peer revision
Not peer-reviewed
Publication Status
Published
Event Details
4th World Conference on Marine Biodiversity, 01 May 2018 - 01 Jan 1970, Montreal (Canada).
Eprint ID
47539
DOI 10.7287/peerj.preprints.26709v1

Cite as
Fiorentino, D. , Kraan, C. , Dannheim, J. , Badesab, S. K. , Armonies, W. , Gräwe, U. and Brey, T. (2018): Multiscale spatial distribution of macrofauna response to fishery pressure , 4th World Conference on Marine Biodiversity, Montreal (Canada), May 2018 - unspecified . doi: 10.7287/peerj.preprints.26709v1


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