Search results
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Progress towards a trophic model of the ecosystem of the Ross Sea, Antarctica, for investigating effects of the Antarctic toothfish fishery
absence of krill, Antarctic silverfish (Pleuragramma antarctica) are probably the major middle-trophic ... of krill, Antarctic silverfish (Pleuragramma antarctica) are probably the major middle-trophic level link ...
Meeting Document : WG-EMM-06/14 : Author(s): M. Pinkerton, S. Hanchet and J. Bradford-Grieve (New Zealand)
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Scientific Abstracts 2006
during their fledging period, defined as the time between a chick’s first trip to sea and its final ... parental provisioning, behaviours not observed in other Pygoscelis species. Chicks took their first trip ... . During this fledging period, individual chicks made an average of five trips to sea. Trip duration ... increased significantly with chick age, as trips to sea become more similar to adult foraging trips in both ... Description / Abstract: PREFACE CCAMLR Scientific Abstracts provides a comprehensive record of ... all scientific papers presented for the consideration of the annual meetings of the CCAMLR Commission ... and Scientific Committee and of their subsidiary bodies. This volume contains abstracts of scientific ... papers as presented and discussed at the 2006 meetings of the CCAMLR Scientific Committee and its working ...
Document : Site Section: Publications
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Food consumption by predators in a CCAMLR integrated study region
i. The number of active breeders is calculated from the rate of egg loss between the laying date (day ... 1) and the hatching data (day h) and the rate of chick loss between hatching and fledging date (day f). Both egg loss ... and chick loss are assumed to be exponential at rates kl and kz respectively. Thus the populations on day ... travelling (e.g., feeding or resting). If the travel speed is v m S-l and proportion of the trip spent ... / Description: A detailed description of the structure and mode of operation of a model for estimating food ... consumption of seabird predators is provided. This model is a development of earlier ones used in the South ... provided, illustrating the changes produced by using these new sub-models. Results of initial sensitivity ... analyses indicate particular sensitivity to estimation of metabolic energy requirements. The system is ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 489–519 : Author(s): Croxall, J.P., C. Ricketts and A.G. Wood
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Development of foraging behaviour and evidence of extended parental care in the gentoo penguin (Pygoscelis papua)
of gentoo penguin chicks during their “fledging period”; defined as the time between a chick’s first trip ... their first trip to sea at a mean age of 70 days of age, before finally departing the colony at an average age ... of 82 days. During this fledging period, individual chicks made an average of five trips to sea. Trip ... duration increased significantly with chick age as trips to sea becoming more similar to adult foraging ...
Meeting Document : WG-EMM-06/8 : Author(s): M. Polito and W.Z. Trivelpiece (USA)
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Longline sink rates on a bottom autoline vessel in New Zealand: draft
Depth Recorders was also developed and is documented. The study found the middle of an unweighted ... Depth Recorders was also developed and is documented. The study found the middle of an unweighted ...
Meeting Document : WG-FSA-98/51 : Author(s): N.W. McL. Smith (New Zealand)
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Foraging strategies of chinstrap penguins at Signy Island, Antarctica: importance of benthic feeding on Antarctic krill
trip patterns and diving behaviour of chinstrap penguins breeding at Signy Island, Antarctica, using ... time-depth recorders. Foraging trips of penguins could be divided into 2 groups, short diurnal (7.8 ... h) and longer overnight (19.9 h) trips, with diurnal trips (74%) being dominant in number (263 out of 355 trips ... trips than overnight trips. Analysis of stomach contents showed that penguins on both types of trip fed ...
Meeting Document : WG-EMM-03/37 : Author(s): A. Takahashi (Japan), M.J. Dunn, P.N. Trathan (United Kingdom), K. Sato, Y. Naito (Japan), J.P. Croxall (United Kingdom)
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Preliminary data on the foraging habitat use by gentoo penguin in Byers Peninsula (Livingston Island) and chinstrap penguin in Deception Island, South Shetlands
Abstract: Data of basic parameters of foraging behaviour (foraging trip duration, total foraging ... trip distance, and maximum distance from the colony) and of foraging range for Gentoo penguin ... Data of basic parameters of foraging behaviour (foraging trip duration, total foraging trip ...
Meeting Document : WG-EMM-18/40 : Author(s): A. Barbosa, J. Benzal, J. Belliure and J. Masello
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Developments in the CCAMLR otolith program
listing the number of otoliths collected on each trip by a vessel flagged to that Member and the observer ... responsible for collecting the otoliths on that trip. Members were asked to provide information on the storage ... the number of otoliths collected on each trip by a vessel flagged to that Member and the observer ... responsible for collecting the otoliths on that trip. Members were asked to provide information ...
Meeting Document : WG-FSA-11/07 : Author(s): Secretariat
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Network characterisation of the food-web of the Ross Sea, Antarctica
peak in biomass in the lower-middle part of the food-web, a result of high biomass of mesozooplankton ... in the lower-middle part of the food-web, a result of high biomass of mesozooplankton and benthic invertebrates ...
Meeting Document : WG-EMM-12/53 : Author(s): M.H. Pinkerton and J.M. Bradford-Grieve (New Zealand)
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On the problem of diurnal migrations of some fish species on the South Georgia shelf (Subarea 48.3)
in middle size fry of both species were found at different depth levels during 24-hour periods. Ch. aceratus ... in middle size fry of both species were found at different depth levels during 24-hour periods. Ch. aceratus ...
Meeting Document : WG-FSA-99/64 : Author(s): I.A. Trunov, J.A. Frolkina and M.P. Konstantinova (Russia)