A length-based multispecies model for evaluating community responses to fishing

By S. Hall, J. Collie, Daniel Duplisea, S. Jennings, M. Bravington, J. Link. 2006

147 citations recorded by the source corpus.

Quantitative ecosystem indicators are needed to fulfill the mandate for ecosystem-based fisheries manage- ment. A variety of community metrics could potentially be used, but before reference levels for such indices can be established the sensitivity of candidate indices to fishing and other disturbances must be determined. One approach for obtaining such information is to test candidate indicators with models that mimic real ecosystems and can be manipu- lated experimentally. Here we construct a size-based multispecies model of a community of fish species that interact by predation. The model was parameterized for 21 fish species to obtain a predation-regulated community. Following an analysis of the sensitivity of the model to parameter uncertainty, we tested the sensitivity of community-level indicators to increasing levels of fishing mortality (F). Abundance and biomass spectra were sensitive to fishing mortality, with the slope decreasing with increasing F. Species diversity size spectra were also very sensitive to F, with diversity in the largest size classes declining rapidly. In contrast, k-dominance curves were less sensitive to fishing pressure. Impor- tantly, however, although most community-level metrics showed clear trends in response to fishing, single-species de- clines in spawning stock biomass were the most sensitive indicators of fishing effects.

Subfields: Genetics, Global and Planetary Change, Nature and Landscape Conservation

View Paper: https://www.semanticscholar.org/paper/ce08cee26763fc6043aa71ffbe4e53fb2850c86e

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In Genetics

In Global and Planetary Change

In Nature and Landscape Conservation

Citations in the corpus

On balanced exploitation of marine ecosystems: results from dynamic size spectra (2012, unknown): “(Hall et al., 2006).”
Modeling What We Sample and Sampling What We Model: Challenges for Zooplankton Model Assessment (2017, background): “…of fishing on marine ecosystems, and the effect of parameter uncertainty Background food source for fish species, but not explicitly resolved Hall et al., 2006; Pope et al., 2006; Thorpe et al., 2015 Static size continuum Establishing baseline, unperturbed abundance of marine ecosystems No…”
Does selective fishing conserve community biodiversity? Predictions from a length-based multispecies model (2011, methodology): “Estimates of , the density-dependent stock recruitment parameter, were derived with the meta-analytical approach described above (Hall et al. 2006).”