Authors
Fabrice Stephenson, David A Bowden, Ashley A Rowden, Owen F Anderson, Malcolm R Clark, Matthew Bennion, Brittany Finucci, Matt H Pinkerton, Savannah Goode, Caroline Chin, Niki Davey, Alan Hart, Rob Stewart
Publication date
2024/7/30
Journal
Biodiversity and Conservation
Pages
1-25
Publisher
Springer Netherlands
Description
Effective ecosystem-based management of bottom-contacting fisheries requires understanding of how disturbances from fishing affect seafloor fauna over a wide range of spatial and temporal scales. Spatial predictions of abundance for 67 taxa were developed, using an extensive dataset of faunal abundances collected using a towed camera system and spatially explicit predictor variables including bottom-trawl fishing effort, using a Joint Species Distribution Model (JSDM). The model fit metrics varied by taxon: the mean tenfold cross-validated AUC score was 0.70 ± 0.1 (standard deviation) for presence–absence and an R2 of 0.11 ± 0.1 (standard deviation) for abundance models. Spatial predictions of probability of occurrence and abundance (individuals per km2) varied by taxon, but there were key areas of overlap, with highest predicted taxon richness in areas of the continental shelf break and slope. The …
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