Search results
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Flexible foraging strategies of gentoo penguins help buffer the impacts of inter-annual changes in prey availability
Shetland Islands, Antarctica, over five years. Antarctic krill Euphausia superba was the primary diet item ... , and fish the secondary, though the importance of these items varied among years. Diving behavior also ... varied over time; different dive depth-distributions were observed in each year. Nonetheless, chick ... with differences in prey availability by altering their foraging strategy among years. We suggest ...
Meeting Document : WG-EMM-08/50 : Author(s): A.K. Miller and W.Z. Trivelpiece (USA)
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Diet composition and observations on reproduction of Champsocephalus gunnari in Subarea 48.3 in March/April 1996, Dr Eduardo Holmberg survey
items, known as an important alternative food in years of krill scarcity, were ingested only ... higher than those reported for the 1991 and 1994 years of krill shortage. The analysis of the ovarian ... in the region in levels equivalent to the historical years of high abundance. Author(s): Marschoff, E., Barrera ... as an important alternative food in years of krill scarcity, were ingested only occasionally (Themisto ...
Meeting Document : WG-FSA-96/28 Rev. 1 : Author(s): Marschoff, E., Barrera-Oro, E., Casaux, R.
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Preliminary study on nesting Adélie penguins disturbance by unmanned aerial vehicles
Vigilance/anxiety Aggression 100 90 80 70 60 50 40 30 20 10 0 S ku a C om bu st io n ov er ... , for example weather or skua attacks. The best option is a 20–30 minute recording with the overflight around ... Department of Geoinformatics, Cartography and Remote Sensing Krakowskie Przedmieście 30, 00-927 Warsaw ... ; Goebel et al., 2015). The rapidly growing use of UAVs in ecological research and monitoring is raising ... Abstract / Description: The importance of unmanned aerial vehicles (UAVs) in remote sensing is rapidly ... growing. However, knowledge about their potential impact on wildlife is scant, especially in Antarctica ... , where they are a new tool used in ecological research and monitoring. In this preliminary study ... potential effects of wildlife disturbance by fixed-wing UAVs are investigated. In austral summer 2014/15 ...
Science Journal Paper : CCAMLR Science, Volume 23 (CCAMLR Science, Volume 23) : 1–16 : Author(s): Korczak-Abshire, M., A. Kidawa, A. Zmarz, R. Storvold, S.R. Karlsen, M. Rodzewicz, K. Chwedorzewska and A. Znój
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Krill population dynamics at South Georgia 1991–1997, based on data from predators and nets
from the same area over the summers of 1991-1997. In comparing the 5 years with both predator and net ... late summer (March). From the 7-year predator time-series, within-year variation was greatest in 1991 ... and 1994, both years of low krill biomass at South Georgia. In both of these years large krill dominated ... in the length-frequency distribution, we suggest that year's of high mean krill length reflect failure ...
Meeting Document : WS-AREA 48-98/15 : Author(s): K. Reid, J. Watkins, J. Croxall and E. Murphy (UK)
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Fishery Report 2014: Exploratory fishery for Dissostichus spp. in Division 58.4.3b
.) are shaded. Throughout this report the CCAMLR fishing season is represented by the year in which ... that season ended, e.g. 2014 represents the 2013/14 CCAMLR fishing season (from 1 December 2013 to 30 ... with a renewed interest in this fishery, the fishery was reclassified as exploratory in 2000. That year ... in the amount and/or the location of those catches (SC-CAMLR-XXXIII, paragraph 3.68). Those years that include ... Description / Abstract: Fishery Report 2014: Exploratory fishery for Dissostichus spp. in ...
Document : Site Section: Publications
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WG-FSA-99
(Switzerland), P.A. Prince and J.P. Croxall (United Kingdom) WG-FSA-99/2 List of participants WG-FSA-99/20 ... of documents WG-FSA-99/30 Increase in relative abundance of fjord Notothenia rossii in Potter Cover, South ...
Meeting
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Analysis of variability of krill size and fish by-catch in the Japanese krill fishery based on scientific observer data
Bayesian model. The models were composed of multistage cluster units (i.e. year, subarea, vessel, cruise ... estimated by the Markov chain Monte Carlo (MCMC) method hardly show difference among years, subareas ... and vessels. The potent interaction effect between year and subarea suggests large spatio–temporal variability ... units (i.e. year, subarea, vessel, cruise and haul) based on a state–space model, separating ... th (m m ) 60 50 40 30 20 (a) Adult size in Subarea 48.1 Overall trend Year E st im ... Year E st im at ed m ea n le ng th (m m ) 60 50 40 30 20 (c) Adult size in Subarea ... 40 30 20 (e) Year Area Y–A Ves. Cruise Haul Ind. Va ria ... . ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● 0 10 20 30 40 50 ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 31–47 : Author(s): Okuda, T. and M. Kiyota
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Abundance and trends in the breeding population of Adélie penguins (Pygoscelis adeliae) in the western Ross Sea
). The aggregated colonies of Cape Bird and Cape Crozier had a negative per capita growth rate of-1.8% for the years ... , 1981-2000 followed by a positive per capita growth rate of 5.5% for the years, 2001-2010. In contrast ... , a single declining trend line best represented the number of breeding pairs at Cape Royds for the years ... dependence in the number of pairs returning to the colony each year. In recent years a number of the Adélie ...
Meeting Document : WG-EMM-13/30 : Author(s): P. O’B. Lyver, M. Barron, K.J. Barton, S. Gordon (New Zealand), D. Ainley, A. Pollard (USA), P.R. Wilson and M.H. Pinkerton (New Zealand)
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The survivorship of rays discarded from the South Georgia longline fishery
- sideration. Normally only skates that are alive and undamaged are selected, with animals not being deemed ... hours, with observations being made at 6 and 12 hours to establish the condition of each animal ... in live animals and a pale pink or white in dead animals; (v) when removed from the tank, live animals ... and gill area in live animals. Common reactions observed in live skates: pectorals and tail curl under ... sea surface by the Chilean fishing vessel Isla Sofía in May and June 2003 during the toothfish fishing ... season in Subarea 48.3. Capture depth had a consistently significant influence on the mortality of skates ... ) and the sex of rays also had some small influence on survivorship. Discard survivorship was 75% in ... waters shallower than 1 300 m (i.e. 1 200–1 300 m), 46% in waters 1 300–1 500 m, and 24% in waters ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 155–164 : Author(s): Endicott, M. and D.J. Agnew
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WG-EMM-04
Areas WG-EMM-04/2 List of participants WG-EMM-04/20 Acquiring a ‘base datum of normality’ for a marine ... African purse-seine fishery R.J.M Crawford (South Africa) WG-EMM-04/3 List of documents WG-EMM-04/30 ...
Meeting