Resultados de la búsqueda
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Catch per unit effort (CPUE) data from the early years of commercail krill fishing operations in the Atlantic sector of the Antarctic
Paper Title: Catch per unit effort (CPUE) data from the early years of commercail krill fishing ... the period 1975/76 to 1987/88. Comparisons are carried out between subareas in single years, between ... years on a subarea and area basis, and between oceanic and shelf regions. Results show that the CPUE may ... differ between subareas, years and shelf/oceanic regions. Obviously, a consistent pattern of CPUE values ... 3). These are the years with the highest average catch rate. The 1981/82 CPUE values also differed ... EFFORT (CPUE) DATA FROM THE EARLY YEARS OF COMMERCIAL KRILL FISHING OPERATIONS IN THE ATLANTIC SECTOR ... significant differences are listed in Table 3, but years such as 1975/76 or 1978/79 are significantly ... subareas than in later years. Since 1978, for example, the CPUE data from Subarea 48.1 almost exclusively ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 31–50 : Autor(es): Siegel, V., V. Sushin and U. Damm
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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 ... Georgia shelf, Antarctica, and have been fished commercially since the early 1970s. They are known to feed ... CONDITION INDICES OF MACKEREL ICEFISH AT SOUTH GEORGIA FROM 1972 TO 1997 I. Everson %3 British Antarctic ... feeding conditions later. During the 1990/91 and 1993/94 seasons all CEMP parameters, with the ... success. Year ct FUSE CEPE MAPE Nov Dec Jan Feb Mar Trip Surv Meal S Meal S Comparison of Condition ... commercially since the early 1970s. They are known to feed predominantly on krill. An index of condition which ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 119–132 : Autor(es): Everson, I. and K.-H. Kock
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Assessing the power to detect systematic change in Adélie penguin foraging trip duration
years of post-impact monitoring to detect systematic change with high power unless one were willing to ... ice cover as a covariate to explain between-year variation in trip duration increased the power to ... Paper Title: Assessing the power to detect systematic change in Adélie penguin foraging trip ... duration Abstract / Description: Models of variability in Adélie penguin foraging trip durations were ... , it would take many years of post-impact monitoring to detect systematic change with high power ... systematic change in mean foraging trip dura- tion in post-impact years, and (iii) the form of post- impact ... for foraging trip duration 1 2, , , a by y y +K . The iy terms are normally distributed with ... trend change in foraging trip duration across the b post-impact years, but there is no change in vari ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 201–215 : Autor(es): Southwell, C., J. Clarke and L.M. Emmerson
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Distribution of fish larvae at South Georgia: horizontal, vertical, and temporal distribution and early life history relevant to monitoring year-class strength and recruitment
Georgia, with special reference to the early life history of Champsocephalus gunnari. File: 04-North.pdf ... distribution and early life history relevant to monitoring year-class strength and recruitment Abstract ... / Description: Four studies on the early life history stages of Antarctic fish at South Georgia are reported ... . In winter and summer fish larvae and early juveniles were present over the continental shelf and ... findings are discussed in relation to surveys for sampling the early stages of fish at South Georgia, with ... , so their vertical distribution is included later under part 3. (Figure 19). Chamsocephalus ... depths fished on a single station near to the coast (Figure 3). They were abundant one month later in ... near the middle of the north-east coast of South Georgia. Conclusions The early stages of the ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 105-141 : Autor(es): North, A.W.
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Demographic characteristics of the Adélie penguin population on Béchervaise Island after 12 years of study
eastern Antarctica after 12 years of monitoring under the CCAMLR Ecosystem Monitoring Program (CEMP). A ... after 12 years of study Abstract / Description: Demographic parameters (age-specific survival rates ... parameters. Results are discussed in comparison with data from a declining Adélie penguin population in the ... Ross Sea studied during the 1960s and 1970s (Ainley et al., 1983), and in relation to other CEMP ... for the Béchervaise Island Adélie penguin colony in eastern Antarctica after 12 years of monitoring ... comparison with data from a declining Adélie penguin population in the Ross Sea studied during the 1960s ... years of age and fecundity is known to increase with age up to 7 years (Ainley et al., 1983). The ... proportions of those surviving to at least 6 years of age that were present at ages 3 to 6 years; (ii) APMS ...
Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 53–74 : Autor(es): Clarke, J., L.M. Emmerson, A. Townsend and K.R. Kerry
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Fishing ground selection in the Antarctic krill fishery: trends in patterns across years, seasons and nations
years, seasons and nations Abstract / Description: Patterns of fishing ground selection were ... contributors to the total catch. A recent shift in operational timing towards later months within fishing ... remained relatively constant in Subareas 48.2 (March–May) and 48.3 (June–August). In 25 years of krill ... from SUN (SGE and SOW). In later years, UKR occasionally used APEI (1996) and APDPW (2001), but ... maintained its main fishing grounds in SGE and SOW. UKR also started to use SGW in later years. 121 ... recent years, except for the years with occasional high catches in SOW (1999, 2002). As previously ... observation (Figure 3), with SSMUs in the seasonal ice zone (Subareas 48.1 and 48.2) mainly being used ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 117–141 : Autor(es): Kawaguchi, S., S. Nicol, K. Taki and M. Naganobu
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Operational interactions of sperm whales and killer whales with the Patagonian toothfish industrial fishery off southern Chile
Paper Title: Operational interactions of sperm whales and killer whales with the Patagonian ... (Physeter macrocephalus) and killer whales (Orcinus orca) with Patagonian toothfish (Dissostichus ... eleginoides) fishery operations were assessed in southern Chile during surveys with observers on board ... = 3). The mean rate of depredation was 3% (±2% CI 95%; n = 180 sets) and ranged between 0 and 100 ... sperm and killer whales with the toothfi sh fi shery and now extends throughout the country, with ... comparing the results of this study with existing photographic databases from the eastern South Pacifi c ... Most interactions with whales occurred along the middle of the Pacifi c-South American continen- tal ... , Pedro Rubilar and Layla Osman greatly contributed with their analytical skills in the later stages of ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 127–140 : Autor(es): Hucke-Gaete, R., C.A. Moreno and J. Arata
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The foraging range of Adélie penguins – implications for CEMP and interactions with the krill fishery
Paper Title: The foraging range of Adélie penguins – implications for CEMP and interactions with ... coast of eastern Antarctica between 55 o E (Enderby Land) and 175 o E (Ross Sea). Adélie penguins ... feeding chicks regularly travelled up to 120 km offshore to the continental shelf and returned with krill ... , Euphausia superba. Locations of penguins on foraging trips were compared with historical records of fine ... each 0.5" latitude and 1" longitude provided as a total for the years 1972-1994. These data are ... Figure 3: The positions of satellite fixes obtained from foraging Ad6lie penguins together with krill ... . The krill catch for each 0.5" latitude and 1" longitude is provided as a total for the years 1972 ... OF ADELIE PENGUINS - IMPLICATIONS FOR CEMP AND INTERACTIONS WITH THE KRILL FISHERY K.R. Kerry, J.R ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 75–87 : Autor(es): Kerry, K.R., J.R. Clarke, S. Eberhard, H. Gardner, R.M. Lawless, S. Corsolini, S. Focardi, E. Franchi, D. Rodary and R. Thomson
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Seabird interactions with longlining operations for Dissostichus eleginoides around South Georgia, April to May 1994
Paper Title: Seabird interactions with longlining operations for Dissostichus eleginoides around ... eleginoides off South Georgia were assessed for incidental mortality and interactions with seabirds. Twenty ... petrels (Procellaria aequinoctialis); the four day sets contributed 85% of deaths, with giant petrels ... birds/1 000 hooks. Mortality and interactions of birds with operations varied with site and time of day ... lost to birds. Murray et al. (1993) estimated a minimum of 3 652 seabirds caught in New Zealand ... INTERACTIONS WITH LONGLINING OPERATIONS FOR DISSOSTZCHUS ELEGINOIDES AROUND SOUTH GEORGIA, APRIL TO MAY 1994 ... for incidental mortality and interactions with seabirds. Twenty-seven line sets were observed and 98 ... ;); the four day sets contributed 85% of deaths, with giant petrels (Macronectes sp.), grey-headed ...
Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 111–121 : Autor(es): Ashford, J.R., J.P. Croxall, P.S. Rubilar and C.A. Moreno
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The foraging range of Adélie penguins at Béchervaise Island, Mac. Robertson Land, Antarctica, and its overlap with the krill fishery
, Antarctica, and its overlap with the krill fishery Abstract / Description: The foraging ranges of six female ... 27 January 1992 1 67.5° 62.9° 12 11 none feeding large chick short foraging trip 28 January 1992 3 ... BECHERV AISE ISLAND, MAC. ROBERTSON LAND, ANTARCTICA, AND ITS OVERLAP WITH THE KRILL FISHERY K.R ... required. During the incubation period birds make foraging trips of between two and three weeks. Later in ... and gentoo) penguins with the krill fishery in the South Shetland and South Orkney Islands was ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 337–344 : Autor(es): Kerry, K.R., J.R. Clarke and G.D. Else