Resultados de la búsqueda
-
An assessment of the exploratory fishery for Dissostichus spp. on BANZARE Bank (CCAMLR Division 58.4.3b) based on fine-scale catch and effort data
(CCAMLR Division 58.4.3b) based on fine-scale catch and effort data Abstract / Description: In 2006, the ... biological data submitted by scientific observers on board vessels in the fishery. Results of a Leslie ... of toothfish at the scale of individual fishing grounds in the 2004/05 and 2005/06 seasons. This ... inconsistencies are noted between historical data and those submitted in the 2006/07 season, with Patagonian ... Highway, Kingston 7050 Tasmania, Australia Email – john.mckinlay@aad.gov.au Abstract In 2006, the ... of biological data submitted by scientific observers on board vessels in the fishery. Results of a ... for depletion of toothfish at the scale of individual fishing grounds in the 2004/05 and 2005/06 ... overfished. Several inconsistencies are noted between historical data and those submitted in the 2006/07 ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 55–78 : Autor(es): McKinlay, J.P., D.C. Welsford, A.J. Constable and G.B. Nowara
-
Histological study on the ovarian development of mackerel icefish (Champsocephalus gunnari) from the South Georgia Islands
on ovarian development in Champsocephalus gunnari caught by the RV Dr Eduardo L. Holmberg in the ... South Georgia and Shag Rocks areas in February and March 1994. Six phases of oocyte development were ... to a regression stage. In some cases these ovaries presented few atretic oocytes; in others a ... generalised regression was found, which was observed in 41% of mature fish. A high proportion of juvenile ... histological analysis was carried out on ovarian development in Charnpsocephalus gunnari caught by the RV Dr ... Eduardo L. Holrnberg in the South Georgia and Shag Rocks areas in February and March 1994. Six phases of ... but microscopically conform to a regression stage. In some cases these ovaries presented few atretic ... oocytes; in others a generalised regression was found, which was observed in 41% of mature fish. A high ...
Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 35–49 : Autor(es): Macchi, G.J. and E.R. Barrera-Oro
-
Seabird by-catch by autoline vessels: do line setters increase the sink rate of integrated weight longlines?
m –1 lead core) longlines by some autoline vessels in the Kerguelen and Crozet Islands Patagonian ... . A trial was conducted in the Ross Sea to determine the effectiveness of line setters in increasing ... were identical, including in the first few metres of the water column where seabird interactions are ... depth of longlines for given distances astern. This increase in depth is minor and unlikely to result in ... weight (IW) (50 g m–1 lead core) longlines by some autoline vessels in the Kerguelen and Crozet Islands ... sink rates. A trial was conducted in the Ross Sea to determine the effectiveness of line setters in ... setter were identical, including in the first few metres of the water column where seabird interactions ... ) the depth of longlines for given distances astern. This increase in depth is minor and unlikely to ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 107–114 : Autor(es): Robertson, G., J. Williamson, M. McNeill, S.G. Candy and N. Smith
-
Analysis and modelling of the Soviet Southern Ocean krill fleet
support the notion of a “patches within patches” model for the distribution of krill in the southern ... catch and effort data provide about krill abundance or how easily can significant changes in krill ... distributions in Part II. General considerations about the theory of abundance indices for pelagic, schooling ... species are discussed. In particular, the importance of the time spent searching for swarms is highlighted ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 127–235 : Autor(es): Mangel, M.
-
Homogeneity of body length composition of Antarctic krill within the commercial zone
Abstract / Description: The homogeneity of krill (Euphausia superba) length composition in commercial ... haul. There was no significant difference (P >0.5) in 53 out of 60 hauls. Therefore it is concluded ... that sampling from one part of the haul provides a reasonable estimate of length composition in the ... entire haul. In contrast to small variations in length composition within the same haul, variation ... (Euphausia superba) length composition in commercial trawl catches (hauls) was investigated by comparing ... ) in 53 out of 60 hauls. Therefore it is concluded that sampling from one part of the haul provides a ... reasonable estimate of length composition in the entire haul. In contrast to small variations in length ... composition within the same haul, variation between different hauls was most noticeable in areas where ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 17–28 : Autor(es): Ichii, T.
-
Analysis of krill trawling positions north of the South Shetland Islands (Antarctic Peninsula area), 1980/81–1999/2000
commercial krill trawling positions for the 1980/81 to 1999/2000 seasons in the area north of the South ... Shetland Islands were analysed in relation to biological and environmental factors. Commercial fishing ... operations concentrated on the outer shelf in the early 1980s, along the shelf slope in the mid to late 1980s ... , and from the shelf across to the outer shelf in the early to late 1990s. Intra-annually, trawling ... of commercial krill trawling positions for the 1980/81 to 1999/2000 seasons in the area north of the ... South Shetland Islands were analysed in relation to biological and environmental factors. Commercial ... fishing operations concentrated on the outer shelf in the early 1980s, along the shelf slope in the mid ... to late 1980s, and from the shelf across to the outer shelf in the early to late 1990s. Intra ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 25–36 : Autor(es): Kawaguchi, S. and K. Segawa
-
Some principles for fisheries regulation from an ecosystem perspective
/ Description: The paper discusses some principles to be considered in the formulation of a framework for the ... Marine Living Resources. An important task in this formulation is to derive subsidiary objectives for ... out in the Convention. An important property required for subsidiary objectives is that they are ... framed in terms of quantities which can be robustly estimated, thus allowing the degree to which ... principles to be considered in the formulation of a framework for the. regulation of fisheries from an ... important task in this formulation is to derive subsidiary objectives for regulation which have a more ... rigorous scientific interpretation than the broad principles of conservation set out in the Convention ... . An important property required for subsidiary objectives is that they are framed in terms of ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 323-339 : Autor(es): de la Mare, W.K.
-
Analysis and modelling of the Soviet Southern Ocean krill fleet, II: Estimating the number of concentrations and analytical justification for search data
number of concentrations and analytical justification for search data Abstract / Description: In this ... of concentrations of krill (Butterworth, 1988; Mangel, 1988) in a given region of the Southern Ocean ... . Sample computations are performed, using data collected by Soviet research/survey vessels in the early ... 1980s. These examples highlight the need for a navigational log as well as a fishing log in order to ... SEARCH DATA M. Mangel Abstract In this paper, I show how data that are routinely collected by ... , 1988) in a given region of the Southern Ocean. Sample computations are performed, using data ... collected by Soviet research/survey vessels in the early 1980s. These examples highlight the need for a ... navigational log as well as a fishing log in order to make accurate inferences. In the appendix, a method for ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 283–322 : Autor(es): Mangel, M.
-
Survey design to estimate krill abundance during FIBEX
methodology for assessing the abundance of krill. The survey design used in the southwest Atlantic study area ... of the FIBEX is described in this paper. Sampling involved the use of echo sounders for estimating ... krill abundance as well as collection of data on the size, density and distribution of krill swarms. In ... also collected. The study area was subdivided into several geographically distinct subareas in each of ... of krill. The survey design used in the southwest Atlantic study area of the FIBEX is described in ... collection of data on the size, density and distribution of krill swarms. In addition, information on ... study area was subdivided into several geographically distinct subareas in each of which randomly ... was used. The survey was done in two phases. In the first phase a fairly evenly dispersed subsample ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 253–263 : Autor(es): Everson, I., I. Hampton and G.M. Jolly
-
Some specific features of the USSR krill fishery and possibilities of applying fishery statistics to studies of krill biology and stocks
their exploitation are considered. Using data obtained by the scouting vessel Globus engaged in regular ... the vessel rather than with krill abundance in a certain area. During preparations for regular fishing ... substantial fluctuations of catches during scouting operations often results in yields which do not correspond ... to the actual biomass of krill in the place in question. In both cases particular diurnal and long ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 237–252 : Autor(es): Dolzhenkov, V.N., T.G. Lubimova, R.R. Makarov, S.S. Parfenovich and V.A. Spiridonov