Data from: An integrated assessment model of seabird population dynamics: can individual heterogeneity in susceptibility to fishing explain abundance trends in Crozet wandering albatross? ...
1. Seabirds have been incidentally caught in distant-water longline fleets operating in the Southern Ocean since at least the 1970s, and breeding numbers for some populations have shown marked trends of decline and recovery concomitant with longline fishing effort within their distributions. However...
| Main Authors: | , , , , , , |
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| Format: | Dataset |
| Language: | English |
| Published: |
Dryad
2016
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.5061/dryad.7f63m https://datadryad.org/stash/dataset/doi:10.5061/dryad.7f63m |
| Summary: | 1. Seabirds have been incidentally caught in distant-water longline fleets operating in the Southern Ocean since at least the 1970s, and breeding numbers for some populations have shown marked trends of decline and recovery concomitant with longline fishing effort within their distributions. However, lacking is an understanding of how forms of among-individual heterogeneity may interact with fisheries bycatch and influence population dynamics. 2. We develop a model that uses comprehensive data on the spatial and temporal distributions of fishing effort and seabird foraging to estimate temporal overlaps, fishery catchability and consequent bycatch. We apply a population model that is structured by age, sex, life stage and spatially to Crozet Island wandering albatross and explore how heterogeneity in susceptibility to capture may have influenced the population's demography over time. 3. A model where some birds were assumed to be more susceptible to fisheries bycatch was able to successfully replicate the ... : Input data usedThis file lists the fishing effort data used in the modelData used.txtIOTC pelagic longlineIndian Ocean longline data from the IOTC (www.iotc.org)IOTC data.xlsxICCAT pelagic longlineAtlantic Ocean longline data from ICCAT (www.iccat.int/en/)ICCAT_all_v1_CSV.rarFalklands demersal longlineFalklands demersal longlineFalklands demersal LL.xlsxArgentina demersal longlineArgentina demersal longline (modelled)Arg_Dem_LL.xlsxChile demersal longlineChilean demersal and pelagic (Swordfish) longline (modelled)Chile_LL.xlsxSouth Africa demersal longline (kingklip)South Africa demersal kingklip (modelled)Saf_KKlip_Dem.txtNamibian demersal longlineNamibian demersal longline (modelled)Namibia Dem Hks Est.txt ... |
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