Результаты поиска
-
Temporal variability and the interrelationships between CEMP parameters collected on Adélie penguins at Béchervaise Island
Adélie penguins at Béchervaise Island Abstract / Description: Temporal variability in a series of CCAMLR ... examined for Adélie penguins over a period of 12 years. Data were collected from 1990/91 to 2001/02 at ... Béchervaise Island, Eastern Antarctica. Parameters relating to chick survival (brooding nest counts, counts of ... . The low degree of correlation between parameters collected before incubating nest counts with those ... relationships between a selection of CEMP parameters (population size, breeding success, foraging trip ... Trip Duration and Fledgling Mass There was signifi cant correlation between the CEMP parameters of ... across the population. Most measures of foraging trip durations during chick rearing were strongly ... any particular component of foraging trip duration (e.g. female foraging trip duration during the ...
Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 75–90 : Автор(ы): Emmerson, L.M., J. Clarke, K.R. Kerry and C. Southwell
-
Biological parameters for icefish (Chionobathyscus dewitti) in the Ross Sea, Antarctica
, meristics, reproductive biology, diet and age estimation. All of the icefish sampled were identified as ... between December and February, but this was limited, probably due to the short temporal distribution of ... the data. Length-at-maturity and age-at-maturity ogives indicated that 50% of the fish sampled were ... mature at about 340–360 mm total length (TL) and about 3–4 years of age, and that 95% were mature at ... could not be directly recorded for some fish due to loss or damage of the caudal fin. A linear ... National Institute of Water and Atmospheric Research (NIWA) Ltd PO Box 893 Nelson, New Zealand Email ... – c.sutton@niwa.co.nz M.J. Manning, D.W. Stevens and P.M. Marriott National Institute of Water and ... , diet and age estimation. All of the icefish sampled were identified as Chionobathyscus dewitti, and ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 139–165 : Автор(ы): Sutton, C.P., M.J. Manning, D.W. Stevens and P.M. Marriott
-
Environment–krill relations in the South Georgia marine ecosystem
study, time series of krill abundance (CPUE) indices were derived from Soviet fishing operations in the ... atmospheric components of the system, and there are also correlations with CPUE data. The CPUE index generally ... agrees with other data which give direct or indirect indications of krill availability, suggesting it can ... were only expressed strongly in years of extreme conditions. The correlation with water temperature was ... result of large-scale changes in the physical environment. Mackintosh (1972) drew attention to the ... transport to the east and negative values of M-AT reflect air transport to the north. In this study the Z ... lob). The M38 index, which is based on gradients to the east of M37 (Figure l ) , did not show any ... and individual quality. I. Anim. Ecol., 63: 827-840. Mackintosh, N.A. 1972. Life cycle of Antarctic ...
Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 13–30 : Автор(ы): Fedoulov, P.P., E. Murphy and K.E. Shulgovsky
-
Modelling variability and estimating power to detect change in Adélie penguin fledgling weights
at a single time each year, without substantial loss of power to detect change. Further modelling ... the number of birds weighed in each five-day period from 50 to 30 without substantial loss of power ... fledgling weights Abstract / Description: Statistical models of variation in Adélie penguin fledgling ... variability of fledgling weights. These models assume that data are collected during a fixed CEMP five-day ... , without substantial loss of power to detect change. Further modelling work is identified to investigate ... each five-day period from 50 to 30 without substantial loss of power. If practical, these findings ... Mawson Station in East Antarctica, since the 1990/91 breeding season, as part of CEMP. During that time ... single time each year. The magnitude of the loss in power associated with simplifying the monitoring ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 191–200 : Автор(ы): Emmerson, L.M., C. Southwell and J. Clarke
-
Target strength studies on Antarctic silverfish (Pleuragramma antarcticum) in the Ross Sea
Ross Sea Abstract / Description: Target strength (TS) of preserved (frozen and defrosted) Antarctic ... silverfish (Pleuragramma antarcticum) of total length (TL) from 110 to 202.5 mm were measured ex situ (Ancona ... -larvae of P. antarcticum with a total length from 13 to 70 mm, were conducted in the southeast of the ... continental slope and shelf of the Ross Sea at depths from 30 to 120 m, during the Italian expeditions of 1997 ... . Bottaro and M. Vacchi ISPRA Università di Genova Genova, Italy Abstract Target strength (TS) of ... preserved (frozen and defrosted) Antarctic silverfish (Pleuragramma antarcticum) of total length (TL) from ... experiments targeted at juveniles and post-larvae of P. antarcticum with a total length from 13 to 70 mm ... , were conducted in the southeast of the continental slope and shelf of the Ross Sea at depths from 30 ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 75–104 : Автор(ы): Azzali, M., I. Leonori, I. Biagiotti, A. De Felice, M. Angiolillo, M. Bottaro and M. Vacchi
-
Seabird interactions with longlining operations for Dissostichus eleginoides around South Georgia, April to May 1994
-seven line sets were observed and 98 deaths of seabirds were recorded over 20 sets; no deaths occurred ... during hauls. The 16 sets made at night contributed 15% of overall mortality, all of white-chinned ... petrels (Procellaria aequinoctialis); the four day sets contributed 85% of deaths, with giant petrels ... disproportionately affected in relation to the size of their breeding population at South Georgia when compared to ... deaths of seabirds were recorded over 20 sets; no deaths occurred during hauls. The 16 sets made at ... night contributed 15% of overall mortality, all of white-chinned petrels (Procellaria aequinoctialir ... ;); the four day sets contributed 85% of deaths, with giant petrels (Macronectes sp.), grey-headed ... affected in relation to the size of their breeding population at South Georgia when compared to ...
Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 111–121 : Автор(ы): Ashford, J.R., J.P. Croxall, P.S. Rubilar and C.A. Moreno
-
A rationale for conservation areas within Antarctic waters
: The application of potential conservation measures listed in Article IX 2 of the Convention requires ... ‘the designation of regions and sub-regions based on the distribution of populations of Antarctic ... , first priority has been given to surface circulation of southern waters and the distribution of krill ... . This has been supplemented by (limited) information on the distribution of major consumers including ... during the summers of 1970/71 to 1972/73, Gilbert and Erickson (1977) proposed six residual pack ice ... ANTARCTIC WATERS R.G. Chittleborough (Australia) Abstract SC-CAMLR-VI/BG/23 The application of ... potential conservation measures listed in Article IX 2 of the Convention requires "the designation of ... regions and sub-regions based on the distribution of populations of Antarctic marine living resources ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 513-535 : Автор(ы): Chittleborough, R.G.
-
CCAMLR ecosystem monitoring and a feedback management procedure for krill
attributable to loss of prey through fishing activities. The principal fishery in the CCAMLR Convention Area is ... performance (e.g., reproductive performance) that may be attributable to loss of prey through fishing ... -based predator performance (e.g., reproductive performance) that may be attributable to loss of prey ... las actividades de pesca. La pesqueria de kril es la * Faculty of Environmental Sciences, Griffith ... Antarctic krill fishery to protect both kriU and predator populations has been the subject of many recent ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 345–350 : Автор(ы): Constable, A.J.
-
Some thoughts on precautionary measures for the krill fishery
: The concept of precautionary measures for krill is discussed. A precautionary catch limit, based on ... takes account of the requirements of land-based predators. Implementation of the approach is discussed ... and the question of how the method relates to the current CCAMLR Ecosystem Monitoring Program (CEMP ... , Kingston Tasmania 7050, Australia Abstract The concept of precautionary measures for krill is ... land-based predators. A new approach is described which takes account of the requirements of land ... -based predators. Implementation of the approach is discussed and the question of how the method relates ... THE CONCEPT OF PRECAUTIONARY MEASURES FOR KRILL A fundamental aim of establishing conservation ...
Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 1–11 : Автор(ы): Everson, I. and W.K. de la Mare
-
Defining smaller-scale management units to further develop the ecosystem approach in managing large-scale pelagic krill fisheries in Antarctica
the principles and approach required for developing small-scale management units to take account of ... considering the scales of management units involving the integration of local populations of harvested species ... , foraging areas of predators, fishing grounds and the potential influences of the environment, including ... oceanography and metapopulation structure of the harvested species. The integration of these components ... ) show that for the South Shetland Islands region the dominant current is the west–east fl ow of the ... populations with net transport of krill in a west-to-east direction. Importantly, these areas could be ... Georgia East Sth Georgia C at ch ( to n n es ) North of CCAMLR West South Georgia East South ... management units to take account of predators’ needs when managing the fi shery for Antarctic krill. It ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 117–131 : Автор(ы): Constable, A.J. and S. Nicol
Страницы
- « первая
- ‹ предыдущая
- …
- 30
- 31
- 32
- 33
- 34
- 35
- 36
- 37
- 38
- …
- следующая ›
- последняя »