Resultados de la búsqueda
-
Biological characteristics of Antarctic fish stocks in the southern Scotia Arc region
sexual maturity and length at first spawning in Champsocephalus gunnari was one year later on the ... , despite substantial catches in the first four years of the fishery and ample opportunity to sample these ... catches. The only scientific surveys of these stocks during these years were conducted by Germany in 1985 ... evidence of illegal fishing since the closure of the region some 10 years ago. Differences in length-weight ... Charnpsocephalus gunnari and later the nototheniid Patagonotothen gtintheri around Shag Rocks, with some of the ... for some years in the late 1980s. Since the early 1990s, the fishery was almost exclusively a ... were provided in Table 3. Some results should be regarded with considerable caution: samples of L ... years. The area with the largest influence of Weddell Sea water appeared to be the South Orkney ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 1–41 : Autor(es): Kock, K.-H., C.D. Jones and S. Wilhelms
-
The role of fish as predators of krill (Euphausia superba) and other pelagic resources in the Southern Ocean (submitted to the 2008 Joint CCAMLR-IWC Workshop)
the low Antarctic were made in the late 1970s/early 1980s. Those estimates were constrained by a ... were extended to the mesopelagic realm and the high-Antarctic Zone in the late 1980s and early 1990s ... nototheniids, and that the importance of krill in fish diets varies substantially both with time and location ... on various scales, as well as with the availability of alternate prey in the different regions in the ... of sexually mature 3–4-year-old E. carlsbergi while south of the APFZ 2–3-year- old immature fish ... means a pristine environ- ment. Human exploitation of the Southern Ocean started some 225 years ago ... in the late 1970s/ early 1980s. Those estimates were constrained by a paucity of biomass estimates ... mesopelagic realm and the high-Antarctic Zone in the late 1980s and early 1990s when these areas were ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 115–169 : Autor(es): Kock, K.-H., E. Barrera-Oro, M. Belchier, M.A. Collins, G. Duhamel, S. Hanchet, L. Pshenichnov, D. Welsford and R. Williams
-
Do Adélie penguin fledgling weights provide an index of prey availability?
the end of the breeding season were more strongly correlated with later foraging trips than with ... Abstract: We examine fledgling weights measured over 11 years at Béchervaise Island in relation ... to two assumed proxies of prey availability: breeding success and foraging trip duration. Concordance ... between the two proxies was apparent when considering guard stage foraging trip durations but this was not ...
Meeting Document : WG-EMM-05/21 : Autor(es): L. Emmerson, C. Southwell and J. Clarke (Australia)
-
Lista de las medidas de conservación vigentes en la temporada 2002/03
every five years in accordance with Conservation Measure 91-01 (last review in 2000). 91-03 (2002 ... ) Protection of the Seal Islands CEMP site To be reviewed every five years in accordance with Conservation ... Commission in accordance with Article IX of the Convention on the Conservation of Antarctic Marine Living ... with regard to their Flag Vessels Operating in the Convention Area....................... 1 ...
Document : Site Section: Publications
-
Upward adjustments to local catch limits for the krill fishery in Subarea 48.1
values, agrees generally with expert opinion, and suggests that indices of foraging trip duration, fledge ... the gSSMUs defined in another compilation of vignettes (AERD 2016a, pp. 3-13). We propose upward ... founded on 1) a “stoplight” classification of predator performance to identify years when predator ... predator populations, 2) repeat acoustic surveys to identify years when local krill biomass increases ...
Meeting Document : WG-EMM-16/47 : Autor(es): Antarctic Ecosystem Research Division, Southwest Fisheries Science Center and NOAA Fisheries
-
A rationale for conservation areas within Antarctic waters
b CJleAYlOlI.{l1X paHoHoB npl1MeHeHHn Mep no coxpaHeHHIO: 700 3.A.- 15 0 3.A· 15 03.A.- 400 B.A ... · 40oB.A.- 900B·A· 90oB.A.-150oB.A. 150oB.A.-16003.A. 1600 3.A.- 700 3.A· AaIOTcn npHMephl B03MO)l ... in earlier years within the sector from 700 W to 160o W. More recently there has been a move within ... ) within a unit. To date, apart from an early effort to identify separate stocks of whales (discussed ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 513-535 : Autor(es): Chittleborough, R.G.
-
A declining trend in the abundance of Notothenia rossii marmorata and Notothenia gibberifrons observed in fjords in two sites in the South Shetland Islands
as significant. The material for the current study was obtained with trammel nets at Potter Cove ... , King George/25 de Mayo I., over a period of eight years from 1983 to 1990 and in waters around Half ... species in relation to Notothenia neglecta, a species with similar ecological habits in the fjords. Since ... sampling by this method did not utilize a consistent amount of effort between years, the analysis made use ... number of specimens of N. neglecta. Differences between years have been tested with a nested ANOV A ... material for the current study was obtained with trammel nets at Potter Cove, King George/25 de Mayo 1 ... ., over a period of eight years from 1983 to 1990 and in waters around Half-Moon 1., Moon Bay, in 1989 ... Notothenia neglecta, a species with similar ecological habits in the fjords. Since sampling by this method ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 263–274 : Autor(es): Barrera-Oro, E. and E. Marschoff
-
A review of the diet and at-sea distribution of penguins breeding within the CAMLR Convention Area (submitted to the 2008 Joint CCAMLR-IWC Workshop)
(Cherel, 2008). Diet could vary through the trip owing to areas with different prey availabilities being ... from wind. Kooyman and Ponganis (2007) fitted 10 juveniles with PTTs on their first trip from the ... associated with each approach. It then proceeds to review all published information on the diet and at-sea ... useful for comparison with the findings of their own stud- ies, to identify important gaps in current ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 75–114 : Autor(es): Ratcliffe, N. and P. Trathan
-
Estimation of krill (Euphausia superba) mortality and production rate in the Antarctic Peninsula region
Meteor along the Antarctic Peninsula from 26 December 1989 to 14 January 1990. Results were compared with ... data of an identical survey with RV Polarstern in 1987/88. Seasonal variation between summer and winter ... ratio of 0.88 to 0.94 for different years. The exchange rate of water masses and krill biomass within ... ). Abundance was higher during the post-spawning season 1984/85 with 3 795 x 109 krill and highest in early ... Table 3, however, it is obvious that in 1987/88 the age group 3+ with a mean length of 44.7 mm ... = -0.999) was calculated, which corresponds with a survival rate of 38 % from one year to the next. The ... of a species with a multi-year life-cycle can be obtained by summing up the results for single age ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 159–176 : Autor(es): Siegel, V.
-
Results of Soviet investigations of the distribution and ecology of pelagic squids (Oegopsida) in the Southern Ocean
total of 326 squid specimens were collected at 124 stations with sampling by midwater nets. 125 ... specimens of that total were identified as Brachioteuthis riisei. In recent years (1978-1984) the collection ... stomachs. All species are divided into three major groups in accordance with their habitats: tropico ... fauna (Oegopsida) in the Antarctic. Later, in late Miocene-early Pliocene, the Antarctic was separated ... " started in 1962) were fruitless in this respect and until now no specimens have been caught with the ... -1977 a total of 326 squid specimens were collected at 124 stations with sampling by 1nidwater nets ... . 125 specimens of that total were identified as Brachioteuthis riisei. In recent years (1978-1984 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/2 (Selected Scientific Papers, SC-CAMLR-SSP/2) : 79-111 : Autor(es): Lubimova, T.G.