Name: Decline of the Steller Sea Lion in Alaskan Waters. Untangling Food Webs and Fishing Nets (en Inglés)
SKU: 69256021
Price: 1876.91 MXN
Availability: InStock
Author: National Research Council;Division on Earth and Life Studies;Polar Research Board;Ocean Studies Board;Committee on the Alaska Groundfish Fishery and Steller Sea Lions
ISBN: 9780309086325

portada Decline of the Steller Sea Lion in Alaskan Waters. Untangling Food Webs and Fishing Nets (en Inglés)

Decline of the Steller Sea Lion in Alaskan Waters. Untangling Food Webs and Fishing Nets (en Inglés)

Formato

Libro Físico

Editorial

National Academies Press

Autor

National Research Council;Division on Earth and Life Studies;Polar Research Board;Ocean Studies Board;Committee on the Alaska Groundfish Fishery and Steller Sea Lions

Año

2003

Idioma

Inglés

N° páginas

216

Encuadernación

Tapa Blanda

Dimensiones

9x6 cm

ISBN13

9780309086325

Decline of the Steller Sea Lion in Alaskan Waters. Untangling Food Webs and Fishing Nets (en Inglés)

National Research Council;Division On Earth And Life Studies;Polar Research Board;Ocean Studies Board;Committee On The Alaska Groundfish Fishery And Steller Sea Lions (Autor) · National Academies Press · Tapa Blanda

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Reseña del libro "Decline of the Steller Sea Lion in Alaskan Waters. Untangling Food Webs and Fishing Nets (en Inglés)"

For an unknown reason, the Steller sea lion population in Alaska has declined by 80% over the past three decades. In 2001, the National Research Council began a study to assess the many hypotheses proposed to explain the sea lion decline including insufficient food due to fishing or the late 1970s climate/regime shift, a disease epidemic, pollution, illegal shooting, subsistence harvest, and predation by killer whales or sharks. The report's analysis indicates that the population decline cannot be explained only by a decreased availability of food; hence other factors, such as predation and illegal shooting, deserve further study. The report recommends a management strategy that could help determine the impact of fisheries on sea lion survival—establishing open and closed fishing areas around sea lion rookeries. This strategy would allow researchers to study sea lions in relatively controlled, contrasting environments. Experimental area closures will help fill some short-term data gaps, but long-term monitoring will be required to understand why sea lions are at a fraction of their former abundance.