Результаты поиска

1. Reproductive performance of seabirds and seals at South Georgia and Signy Island, South Orkney Islands, 1976-1987: implications for Southern Ocean monitoring studies

   Paper Title:  Reproductive performance of seabirds and seals at South Georgia and Signy Island ... some or all of breeding population size, breeding success, foraging trip duration and offspring growth ... fluctuations in reproductive performance of the krill-eating, summer-breeding penguins at Signy Island are not ... / Description:  Aspects of the reproductive performance over the last decade of black-browed, grey-headed and ... ) REPRODUCTIVE PERFORMANCE OF SEABIRDS AND SEALS AT SOUTH GEORGIA AND SIGNY ISLAND, SOUTH ORKNEY ISLANDS, 1976 ... success, foraging trip duration and offspring growth rate. 1977-78 and 1983-84 were summers of ... and P. Rotheryl (United Kingdom) Abstract Aspects of the reproductive performance over the last ... decade of Black-browed, Grey-headed and Wandering Albatrosses, Gentoo and Macaroni Penguins and ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 445-447 : Автор(ы): Croxall, J.P., T.S. McCann, P.A. Prince and P. Rothery

2. Long-term trends in the foraging patterns of female Antarctic fur seals at South Georgia

   Paper Title:  Long-term trends in the foraging patterns of female Antarctic fur seals at South ... utilizing tetracycline-marked teeth confirmed that the feeding trip/suckling cycles of females are reflected ... Georgia Abstract / Description:  The number of feeding trips to sea made by female Antarctic fur seals ... during lactation may reflect the relative availability of local prey resources. Experimental work ... -TERM TRENDS IN THE FORAGING PATTERNS OF FEMALE ANTARCTIC FUR SE!\LS AT SOUTH GEORGIA* 1 J.L ... tetracycline-marked teeth confirmed that the feeding trip/suckling cycles of females are reflected as ... . Bengtson (USA) Abstract The number of feeding trips to sea made by female Antarctic fur seals during ... lactation may reflect the relative availability of local prey resources. Experimental work utilizing ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 441-443 : Автор(ы): Bengtson, J.L.

3. Pup production and distribution of breeding Antarctic fur seals (Arctocephalus gazella) at South Georgia

   in the 1950s and 1960s. Increased population size has led to an expansion of the breeding range at ... Abstract:  A census of the breeding population of Antarctic fur seals (Arctocephalus gazella) at ... at the breeding grounds during the pupping period, together with corrections for the likelihood of a ... South Georgia was carried out during the 1990/91 breeding season. Using counts of adult females ashore ...

   Meeting Document : WG-CEMP-92/39 : Автор(ы): I.L. Boyd (United Kingdom)

4. A TALE OF TWO ISLANDS: CONTRASTING FORTUNES FOR SUBANTARCTIC SKUAS AT THE PRINCE EDWARD ISLANDS

   Abstract:  Subantarctic skuas Catharacta antarctica are key predators of burrowing petrels at sub ... km2) had a feral population of cats from the 1950s to 1980s, and still supports a large population of ... twice as many non-breeding birds. Burrowing petrels comprised 96% of prey in skua middens at Prince ... breeding pairs at Prince Edward Island increased from 2001 to 2008, probably as a result of better coverage ...

   Meeting Document : WG-EMM-10/P3 : Автор(ы): P.G. Ryan, P.A. Whittington and R.J.M. Crawford

5. A tale of two islands: contrasting fortunes for sub-Antarctic skuas at the Prince Edward Islands

   Abstract:  Subantarctic skuas Catharacta antarctica are key predators of burrowing petrels at sub ... (290 km 2) had a feral population of cats from the 1950s to 1980s, and still supports a large ... population of introduced house mice Mus musculus. Breeding skuas were more widespread, occurred at greater ... supported twice as many non-breeding birds. Burrowing petrels comprised 96% of prey in skua middens at ...

   Meeting Document : WG-EMM-10/P03 : Автор(ы): P.G. Ryan, P.A. Whittington and R.J.M. Crawford

6. Foraging range and at-sea locations of female Antarctic fur seals, Cape Shirreff, Livingston Island, from 1999–2002

   distribution and range of foraging females rearing pups at Cape Shirreff, Livingston Island, Antarctica. We ... ):  M.E. Goebel, S.N. Sexton and D.P. Costa (USA) Title:  Foraging range and at-sea locations of female ... from their colony to feeding areas hours to days offshore, returning periodically to suckle. Outside of ... survival but that of her young. As such, a fundamental component to understanding the survival and ...

   Meeting Document : WG-EMM-02/53 : Автор(ы): M.E. Goebel, S.N. Sexton and D.P. Costa (USA)

7. The foraging range of Adélie penguins at Béchervaise Island, Mac. Robertson Land, Antarctica, and its overlap with the krill fishery

   Paper Title:  The foraging range of Adélie penguins at Béchervaise Island, Mac. Robertson Land ... foraging range of the birds at Béchervaise Island considerably exceeds the 15 to 50 km determined for birds ... , Antarctica, and its overlap with the krill fishery Abstract / Description:  The foraging ranges of six female ... and four male Adélie penguins breeding at Béchervaise Island near Mawson Station (Mac. Robertson Land ... WG-CEMP-92/36 THE FORAGING RANGE OF ADELIE PENGUINS AT ... foraging range of the birds at Bechervaise Island considerably exceeds the 15 to 50 km determined for ... of the continental shelf at approximately the same speed (1 km/hr) as the prevailing currents. All ... considerable concentrations at the shelf break along the coast of Mac. Robertson Land (Higginbottom et al ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 337–344 : Автор(ы): Kerry, K.R., J.R. Clarke and G.D. Else

8. The effect of different methodologies used in penguin diet studies at three US AMLR predator research sites: Admiralty Bay, Palmer Station and Cape Shirreff

   Abstract:  Diet studies are a key component of the CCAMLR predator monitoring program as they ... provide direct assessments of the prey types and amounts of import to predators, which, in turn, are ... hypothesized to influence variability in related parameters such as breeding success, foraging trip durations ... and chick fledging weights. Given the importance and interdependence of diet studies to monitoring ...

   Meeting Document : WG-EMM-99/46 : Автор(ы): W. Trivelpiece, S. Trivelpiece (USA) and K. Salwicka (Poland)

9. Poor breeding success of the Adélie penguin at Béchervaise Island in the 1998/99 season

   Abstract:  This paper describes the diet and foraging behaviour of Ad6lie penguins at B6chervaise ... island. Evidence from analyses of foraging location, foraging trip duration and diet led to the ... Island during 1998-99, a season of high chick mortality. One thousand nests perished in the three weeks ... following first hatch, when the chicks were very small. A total of 802 chicks reached crèche age from 1880 ...

   Meeting Document : WG-EMM-99/25 : Автор(ы): L. Irvine, J.R. Clarke and K.R. Kerry (Australia)

10. Variations in condition indices of mackerel icefish at South Georgia from 1972 to 1997

    Paper Title:  Variations in condition indices of mackerel icefish at South Georgia from 1972 to ... predominantly on krill. An index of condition which uses the ratio of the measured total mass to the estimated ... mass is shown to provide a good indicator of local krill density. The index is likely to be little ... responds rapidly to changes in krill density and therefore can provide indications of short-term variations ... CONDITION INDICES OF MACKEREL ICEFISH AT SOUTH GEORGIA FROM 1972 TO 1997 I. Everson %3 British Antarctic ... correlation coefficients were 0.951 for males and 0.898 for females, both of which were significant at the 1 ... , is normal in one area but low in the other. There are also some instances of low C, at both South ... success. Year ct FUSE CEPE MAPE Nov Dec Jan Feb Mar Trip Surv Meal S Meal S Comparison of Condition ...

    Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 119–132 : Автор(ы): Everson, I. and K.-H. Kock

Страницы