Результаты поиска
-
Population dynamics of black-browed and grey-headed albatrosses Diomedea melanophris and D. chrysostoma at Bird Island, South Georgia
Island, South Georgia for 17 consecutive years (1975-1991). Over this period almost all the Grey-headed ... ) decreased. Black-browed Albatrosses follow an annual breeding cycle, with over 80% of birds successful in ... rearing a chick and 75% of those failing to do so returning to breed the next year, 5-10% of both ... categories delaying one further year (even when still paired). Grey-headed Albatrosses are essentially ...
Meeting Document : SC-CAMLR-XII/BG/21 : Автор(ы): Delegation of United Kingdom
-
Movement and growth of tagged toothfish around South Georgia and Shag Rocks (Subarea 48.3)
Abstract: In 2000 the UK started a toothfish (Dissostichus eleginoides) tagging programme. The ... of the fish recaptured to date were tagged and released during the experimental pot fishing in 2000 ... and 2001, and have been at liberty from one to two years. Four fish were tagged and recaptured from ... the same longline vessel in 2002 after up to two months at liberty. The fish tagged during the ...
Meeting Document : WG-FSA-02/28 : Автор(ы): T.R. Marlow, D.J. Agnew and I. Everson (United Kingdom)
-
Breeding numbers and success of Eudyptes penguins at Marion Island, and the influence of arrival of adults
Abstract: At Marion Island, there was considerable correlation in numbers of adults breeding at ... Penguins, over 26 and 22 years respectively, suggesting over-wintering conditions may influence the ... , over-wintering conditions may also affect breeding success. Trends in breeding success at study ... Niño Southern Oscillation event of 1997/98, there was no significant correlation in mass on arrival ...
Meeting Document : WG-EMM-05/38 : Автор(ы): R.J.M. Crawford, J. Cooper, B.M. Dyer and L.G. Underhill (South Africa)
-
Anthropogenic feather soiling, marine debris and fishing gear associated with seabirds at Bird Island, South Georgia, 2000/01
fishing gear associated with seabirds at Bird Island, South Georgia. In this, the eighth year of ... monofilament long-line originating from fishing vessels were recorded in association with wandering albatrosses ... . Quantities of fishing gear remained within the levels of previous years for all other species. Marine debris ... plastic, this being the first occasion that marine debris has been found in association with this species ...
Meeting Document : SC-CAMLR-XX/BG/07 : Автор(ы): Delegation of the United Kingdom
-
Criteria for aging the otoliths of Dissostichus eleginoides from South Georgia (Subarea 48.3) and an analysis of aging precision
readings by one observer and readings by two observers showed considerable inconsistency in aging both ... was more precise than aging using C2. but tended to give higher age counts in younger fish than over ... the equivalent region in older fish. Both aging techniques indicated D. eleginoides to be a long-lived ... fish, but C2 indicated that captured fish may be mostly young, between 3-9 years old. The low precision ...
Meeting Document : WG-FSA-98/52 : Автор(ы): J. Ashford (United Kingdom) and S. Wischniowski (Canada)
-
Рекомендация об инициировании обсуждения вопроса о методах планирования и организации работы Комиссии по сохранению морских живых ресурсов Антарктики (АНТКОМ)
Abstract: In recent years, there has been an increase in the number and complexity of issues that ... more broadly in the Commission and Scientific Committee, it is timely for the Commission to consider ...
Meeting Document : CCAMLR-XXXIV/18 : Автор(ы): Delegation of Australia
-
Whale depredation data collection guidelines
odontocete depredation on demersal longlines operating in high latitudes was organised by the Coalition of ... Legal Toothfish Operators (COLTO) in Punta Arenas, March 2016. This workshop emphasised the urgent need ... marine mammal interactions or are interested in expanding their observation efforts. It is based on ten ... years of experience around the islands of Kerguelen and Crozet (Southern Indian Ocean). Author(s): N ...
Meeting Document : WG-FSA-16/09 : Автор(ы): N. Gasco, P. Tixier, M. Söffker and C. Guinet
-
Population and breeding of the gentoo penguin Pygoscelis papua at Marion Island, 1994/95 to 2002/03
population stabilized. There is indication that in some years not all breeders nested and that some birds ... fell by 40%, from 1994/95 to 2002/03 from 1 352 pairs to 806 pairs. Apart from a slight increase in ... 1998/99, there was a steady decrease in numbers breeding between 1995/96 and 2000/01, when the ... chicks in 1997/98 and 0.58 chicks in 2002/03 (mean 0.38 ± 0.21). In 1994/95, replacement clutches ...
Meeting Document : WG-EMM-03/16 : Автор(ы): R.J.M. Crawford, J. Cooper, M. du Toit, M.D. Greyling, B. Hanise, C.L. Holness, D.G. Keith, J.L. Nel, S.L. Petersen, K. Spencer, D. Tshingana and A.C. Wolfaardt (South Africa)
-
DEMOGRAPHIC PATTERNS OF ANTARCTIC KRILL (EUPHAUSIA SUPERBA) EXPLAIN THE SPATIAL SEGREGATION OF BALEEN WHALES (MYSTICETI) AROUND THE SOUTH SHETLAND ISLANDS, ANTARCTICA
sampled over five years resulting in the most comprehensive linked whale-krill study in the SW Atlantic ... Peninsula) and test whether whales exhibit interspecific differences in their exploitation of krill ... (Megaptera novaengliae) show strong spatial associations with small juvenile krill in Bransfield Strait ...
Meeting Document : WG-EMM-09/33 : Автор(ы): J.A. Santora, C.S. Reiss, V.J. Loeb and R.R. Veit (USA)
-
Mincing, mealing and batching: waste management strategies aimed at reducing seabird interactions with trawl vessels
treatment (4) where waste was held and discharged in batches. The response to the experimental treatments ... seabirds. In contrast, mealing all waste had a marked effect on several of the bird groups. In particular ... waste, with only a 10 to 20 minute delay between discharge events being achieved. Despite low numbers of ... observations on the second trial, the minced treatment suggested a reduction in the numbers of all albatross ...
Meeting Document : WG-FSA-07/42 : Автор(ы): E. Abraham and J. Pierre (New Zealand)
Страницы
- « первая
- ‹ предыдущая
- …
- 461
- 462
- 463
- 464
- 465
- 466
- 467
- 468
- 469
- …
- следующая ›
- последняя »