Author: M.N. BESTERPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
An analysis of the southern elephant seal Mirounga leonina breeding population at Kerguelen
Author: M.N. BESTERFluctuations in the Population of Southern Elephant Seals Mirounga Leonina at Kerguelen Island
Author: R. J. van AardePublisher:
ISBN:
Category :
Languages : en
Pages : 8
Book Description
Analysis of population information relating to the southern elephant seals at Kerguelen Island. Information pertains to the years 1952, 1958, 1960, 1970 and 1977.
Analysis of Foraging Behavior of the Southern Elephant Seal (Mirounga Leonina) in Its Observed and Simulated Oceanic Physical and Biological Environment
Author: Yves Le BrasPublisher:
ISBN:
Category :
Languages : en
Pages : 32
Book Description
Although the information about the abundance and the distribution of mid-trophic level organisms would have a great interest in the general context of ecological research and multi-species fisheries management, the sampling of mid-trophic level organisms is expensive and biase and such information is not avalaible. For the study of distribution, habitats and foraging ecology of top predators, MTL biomass would be a highly valuable explaining variable. In this context, the modelling of the spatial dynamics of MTL biomass appears to be a useful tool but the quality of predictions can't be easily evaluated. This study aimed at using bio-logging data of Southern elephant seals of the Kerguelen Island to evaluate some key aspects of the modelling approach of SEAPODYM micronekton model. The use of prey catch attempts counting (derived from accelerometry) allowed to validate : the use of the euphotic depth as a way to describe the vertical distribution of the micronekton, the choice of layer's definition and provided encouraging results relatively to the quantitative predictions of micronekton biomass. Then, the predictions of this model were used in parallel with two different proxies of the foraging activity of the Southern elephant seals to investigate the feeding behaviour in an environment charactyerized by th mesoscale activity.
Observations on the Trend of the Breeding Population of Southern Elephant Seals, Mirounga Leonina, at Marion Island
Author: J. D. SkinnerPublisher:
ISBN:
Category :
Languages : en
Pages : 6
Book Description
Describes the annual haulout pattern of adult southern elephant seal cows. Analyses data collected during nine breeding seasons from 1973 to 1982.
Harem structure of the southern elephant seal Mirounga leonina at Kerguelen Island
Author: R.J. VAN AARDEDemography and breeding biology of a small, localized population of southern elephant seals (Mirounga leonina)
Author: F. GALIMBERTIElephant Seals
Author: Burney J. Le BeoufPublisher: Univ of California Press
ISBN: 0520328159
Category : Science
Languages : en
Pages : 434
Book Description
The largest of all seals, elephant seals rank among the most impressive of marine mammals. They are renowned for their spectacular recovery from near-extinction at the end of the nineteenth century when seal hunters nearly eliminated the entire northern species. No other vertebrate has come so close to extinction and made such a complete recovery. The physiological extremes that elephant seals can tolerate are also remarkable: females fast for a month while lactating, and the largest breeding males fast for over one hundred days during the breeding seasons, at which times both sexes lose forty percent of their body weight. Elephant seals dive constantly during their long foraging migrations, spending more time under water than most whales and diving deeper and longer than any other marine mammal. This first book-length discussion of elephant seals brings together worldwide expertise from scientists who describe and debate recent research, including the history and status of various populations, their life-history tactics, and other findings obtained with the help of modern microcomputer diving instruments attached to free-ranging seals. Essential for all marine mammalogists for its information and its methodological innovations, Elephant Seals will also illuminate current debates about species extinctions and possible means of preventing them. This title is part of UC Press's Voices Revived program, which commemorates University of California Press’s mission to seek out and cultivate the brightest minds and give them voice, reach, and impact. Drawing on a backlist dating to 1893, Voices Revived makes high-quality, peer-reviewed scholarship accessible once again using print-on-demand technology. This title was originally published in 1994.
Elephant Seals
Author: Burney J. Le BeoufPublisher: Univ of California Press
ISBN: 0520368177
Category : Nature
Languages : en
Pages : 434
Book Description
The largest of all seals, elephant seals rank among the most impressive of marine mammals. They are renowned for their spectacular recovery from near-extinction at the end of the nineteenth century when seal hunters nearly eliminated the entire northern species. No other vertebrate has come so close to extinction and made such a complete recovery. The physiological extremes that elephant seals can tolerate are also remarkable: females fast for a month while lactating, and the largest breeding males fast for over one hundred days during the breeding seasons, at which times both sexes lose forty percent of their body weight. Elephant seals dive constantly during their long foraging migrations, spending more time under water than most whales and diving deeper and longer than any other marine mammal. This first book-length discussion of elephant seals brings together worldwide expertise from scientists who describe and debate recent research, including the history and status of various populations, their life-history tactics, and other findings obtained with the help of modern microcomputer diving instruments attached to free-ranging seals. Essential for all marine mammalogists for its information and its methodological innovations, Elephant Seals will also illuminate current debates about species extinctions and possible means of preventing them. This title is part of UC Press's Voices Revived program, which commemorates University of California Press’s mission to seek out and cultivate the brightest minds and give them voice, reach, and impact. Drawing on a backlist dating to 1893, Voices Revived makes high-quality, peer-reviewed scholarship accessible once again using print-on-demand technology. This title was originally published in 1994.
Post-weaning dispersion of southern elephant seal Mirounga leonina underyearlings at Kerguelen
Author: P.-Y. LENGLARTUse of the Kerguelen Plateau by Southern Elephant Seals (Mirounga Leonina)
Author: Malcolm Daniel O'ToolePublisher:
ISBN:
Category : Southern elephant seal
Languages : en
Pages :
Book Description