Mediterranean monk seal Monachus monachus distribution and fisheries interactions in the Atlantic Sahara during the second half of the 20th century
| Autor: | Luís González, Pablo Fernández de Larrinoa |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
geography
education.field_of_study geography.geographical_feature_category biology Range (biology) Marine reserve Population Endangered species Monachus monachus biology.organism_classification Bycatch Fishery Critically endangered Peninsula parasitic diseases Animal Science and Zoology education Ecology Evolution Behavior and Systematics |
| Zdroj: | mammalia. 77 |
| ISSN: | 1864-1547 0025-1461 |
| DOI: | 10.1515/mammalia-2012-0046 |
| Popis: | The most important surviving colony of the critically endangered Mediterranean monk seal (Monachus monachus) inhabits the Atlantic Saharan coast. The population has not recovered despite the cessation of commercial sealing in the second half of the 20th century. We report the distribution of the monk seals within the region from 1940 to 1989 and their interactions with fisheries, from data gathered through interviews of fishermen. Our study shows a notable decrease in the seals’ range during the study period. Observations of seals on open beaches and exposed rocks decreased, while observations in caves increased. Important negative interactions between monk seals and fisheries were detected, with the most frequent interactions being bycatch in gillnets and bottom trawl nets. Reports obtained from fishermen clearly indicate that the seals were still being deliberately killed on land during the 20th century, which likely caused the extirpation of seal populations hauling out on beaches. We recommend that mortality due to fishery bycatch be added as a contributing factor to the decline of the monk seal populations in the region from 1940 to 1989. We also recommend conservation measures such as the establishment of a permanent marine reserve along the Atlantic Coast of the Cap Blanc Peninsula. |
| Databáze: | OpenAIRE |
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