Have Antarctic toothfish returned to McMurdo Sound?
| Autor: | Arthur L. DeVries, Stuart Hanchet, Steven J. Parker, Regina Eisert, Sophie Mormede |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
0106 biological sciences
geography education.field_of_study geography.geographical_feature_category 010504 meteorology & atmospheric sciences biology 010604 marine biology & hydrobiology Fishing Population Geology Oceanography biology.organism_classification 01 natural sciences Fishery Population decline Environmental science Ecosystem Cascading effects Antarctic toothfish education Ecology Evolution Behavior and Systematics Sound (geography) 0105 earth and related environmental sciences Apex predator |
| Zdroj: | Antarctic Science. 28:29-34 |
| ISSN: | 1365-2079 0954-1020 |
| DOI: | 10.1017/s0954102015000450 |
| Popis: | A dramatic reduction in catch rates of Antarctic toothfish in McMurdo Sound, Antarctica, has led to conclusions that the commercial bottom longline fishery for toothfish in the Ross Sea has drastically altered the toothfish population with cascading effects on the McMurdo Sound ecosystem. However, results from a new monitoring programme for Antarctic toothfish and other top predators carried out in McMurdo Sound in 2014 have shown toothfish catch rate, fish size and fish age similar to those observed prior to 2002. These results suggest that either large and old fish have returned to McMurdo Sound following a temporary environmentally driven absence or that they remained locally present but were not detected in the areas sampled. These findings highlight the importance of continued standardized monitoring for detecting the potential effects of fishing on the Ross Sea ecosystem. |
| Databáze: | OpenAIRE |
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