Literature review of elasmobranch bycatch and retention rate
| Cobertura |
MEDIAN LATITUDE: 21.721672 * MEDIAN LONGITUDE: -11.417492 * SOUTH-BOUND LATITUDE: -46.000000 * WEST-BOUND LONGITUDE: -156.000000 * NORTH-BOUND LATITUDE: 75.000000 * EAST-BOUND LONGITUDE: 170.000000 |
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| Data(s) |
20/03/2015
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| Resumo |
To address growing concern over the effects of fisheries non-target catch on elasmobranchs worldwide, the accurate reporting of elasmobranch catch is essential. This requires data on a combination of measures, including reported landings, retained and discarded non-target catch, and post-discard survival. Identification of the factors influencing discard vs. retention is needed to improve catch estimates and to determine wasteful fishing practices. To do this we compared retention rates of elasmobranch non-target catch in a broad subset of fisheries throughout the world by taxon, fishing country, and gear. A regression tree and random forest analysis indicated that taxon was the most important determinant of retention in this dataset, but all three factors together explained 59% of the variance. Estimates of total elasmobranch removals were calculated by dividing the FAO global elasmobranch landings by average retention rates and suggest that total elasmobranch removals may exceed FAO reported landings by as much as 400%. This analysis is the first effort to directly characterize global drivers of discards for elasmobranch non-target catch. Our results highlight the importance of accurate quantification of retention and discard rates to improve assessments of the potential impacts of fisheries on these species. |
| Formato |
text/tab-separated-values, 4784 data points |
| Identificador |
https://doi.pangaea.de/10.1594/PANGAEA.844726 doi:10.1594/PANGAEA.844726 |
| Idioma(s) |
en |
| Publicador |
PANGAEA |
| Relação |
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| Direitos |
CC-BY: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted |
| Fonte |
Supplement to: James, Kelsey; Lewison, Rebecca; Dillingham, Peter; Curtis, Alexandra; Moore, Jeffrey (2015): Drivers of retention and discards of elasmobranch non-target catch. Environmental Conservation, 43(01), 3-12, doi:10.1017/S0376892915000168 |
| Palavras-Chave | #Country; Date/time end; Date/time start; Gear; Genus; Group; Identification; LATITUDE; LONGITUDE; Number of individuals; Number of years; Ocean and sea region; Reference/source; Retention, fraction; Species; Species, common name |
| Tipo |
Dataset |
