Search results
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Analysis of the diet of Champsocephalus gunnari at South Georgia in late summer from 1994 to 1997, Dr Eduardo L. Holmberg surveys
superba), followed by the amphipod hyperiid Themisto gaudichaudii, was the main food item around South ... surveys by the Dr Eduardo L. Holinberg from 1994 to 1997, high proportions of fish had empty stomachs, a ... phenomenon which could be caused by several concurrent factors. The variation of the diet according to the ... occurrence (F%) and dietary coefficient (Q%) methods. Krill (Euphausia superba), followed by the amphipod ... consistent pattern from year to year. Likewise, in the four surveys by the Dr Eduardo L. Holinberg from 1994 ... to 1997, high proportions of fish had empty stomachs, a phenomenon which could be caused by several ... surveys were organised and sponsored by the 'Instituto Antartico Argentino' in conjunction with the ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 103–123 : Author(s): Barrera-Oro, E., R. Casaux and E. Marschoff
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Variations in echosounder calibration with temperature, and some possible implications for acoustic surveys of krill biomass
BHeCeHMR ~3MeHeHPlfi AnR YYeTa MeXperHoHaJIbHbIX pa3nHYHfi B CKOPOCTM 3ByKa. B A ~ H H O ~ ~ pa60Te IIPe ... biomass by acoustic techniques is dependent on a number of factors of which one of the most fundamental is ... -reported by 2.8 dB, leading in turn to an under-estimation of krill biomass by 52.5%. Every effort should ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 273–281 : Author(s): Brierley, A.S., C. Goss, J.L. Watkins and P. Woodroffe
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An iterative model to construct an age/length key to assess the age composition of a new fishery for Dissostichus eleginoides in Chilean waters
KJIIOQa K e:>KeMeC5IQHoMY pacnpe~e- * Instituto de Fomento Pesquero, Casilla 8-V, Valparaiso, Chile 11 ... could be biased. By using an iteration algorithm it is possible to overcome this limitation. The age ... that age distribution derived from the model is not significantly different from the one obtained by ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 11–20 : Author(s): Robotham, V. H. and Z. Young U.
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Size compositions of males and females in the course of the life cycle of Euphausia superba
of Euphausia superba populations by sex and its seasonal variability. In this paper variations in ... during the reproductive cycle. Information on size composition by sex is considered to be vital for an ... not pay attention to differences in size composition of Euphausia superba populations by sex and its ... composition by sex is considered to be vital for an understanding of krill population structure. It is ... surrounded by smaller uniform-sized cells) (mc). The succession of events in the E. superba population was ... considered by observing stages of maturity in males and females as indicators of reproductive cycle stages ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 3–16 : Author(s): Makarov, R.R.
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Attribtuion of acoustic echoes to squid in the south Atlantic
the location and timing of the feeding of grey-headed albatrosses (a species known to depend heavily ... had been located a month before (Figure 1). Satellite tags on grey-headed albatrosses ... by a pelagic trawl near the Antarctic Polar Frontal Zone in CCAMLR Subarea 48.3. This paper describes ... echoes recorded from the part of the water column traversed by the net. The trawl was restricted to a ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 259–271 : Author(s): Goss, C., P. Rodhouse, J.L. Watkins and A.S. Brierley
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A review of the trophic role of mesopelagic fish of the family Myctophidae in the Southern Ocean ecosystem
amount of meso- and macroplankton consumed by myctophids indicates high abundance and biomass of these ... fishes. According to a preliminary estimate, the yearly consumption of zooplankton by Electrona ... - and macroplankton consumed by myctophids indicates high abundance and biomass of these fishes ... . According to a preliminary estimate, the yearly consumption of zooplankton by Electrona carlsbergi ranges ... of research undertaken by VNIRO (All-Russia Research Institute of Marine Fisheries and Oceanography ... undertaken by VNIRO and other national research institutes. Published results of studies carried out by ...
Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 71–77 : Author(s): Kozlov, A.N
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Do krill and salps compete? Contrary evidence from the krill fisheries
/ Description: Salp by-catch and krill discolouration ('green' krill) caused by active feeding on ... Salp by-catch and krill discolouration ('green' krill) caused by active feeding on phytoplankton were ... . Keywords: krill, feeding, phytoplankton, krill fishery, salps, by-catch, competition, CCAMLR INTRODUCTION ... during early spring by salp blooms could deprive krill of sufficient food and retard krill gonadal ... the Japanese krill trawlers have accumulated a large amount of data on salp by-catch and on the ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 205–216 : Author(s): Kawaguchi, S., T. Ichii, M. Naganobu and W.K. de la Mare
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Remarks on the natural mortality of Dissostichus eleginoides in Subarea 48.3
no meCTH THnaM KPIOlIKOB B IIo,l(patioHe 48.3. ECTeCTBeHHaSl CMepTHOCTb, (M) BbIlIHCJIeHHaSl no ,l(By ... Bertalanffy growth parameters obtained independently by three authors were used. Three cases were considered ... M estimated by fishing depth and hook type with different growth parameters although there were ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 21–30 : Author(s): Moreno, C.A. and P.S. Rubilar
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A risk-management framework for avoiding significant adverse impacts of bottom fishing gear on Vulnerable Marine Ecosystems
particular bottom fishing activities multiplied by the consequences of those impacts. The aim of the risk ... fine-scale rectangles (0.5° latitude by 1.0° longitude) or smaller can be used in the first instance ... , closed areas around identified VMEs, open and closed management areas, by-catch limits for VME-forming ... multiplied by the consequences of those impacts. The aim of the risk-management framework is to avoid ... rectangles (0.5° latitude by 1.0° longitude) or smaller can be used in the first instance. Temporal scales ... around identified VMEs, open and closed management areas, by-catch limits for VME-forming organisms ... Ecosystems (VMEs) was identified as a key issue by the United Nations in 2003 (UNGA, 2003). No standard ...
Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 177–193 : Author(s): Martin-Smith, K
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Estimation of krill (Euphausia superba) mortality and production rate in the Antarctic Peninsula region
Antarctic Peninsula region Abstract / Description: A net sampling survey for krill was carried out by RV ... reached only a factor of 1:1.6. Krill mortality was calculated by linearized catch curve analysis and ... survey for krill was carried out by RV Meteor along the Antarctic Peninsula from 26 December 1989 to 14 ... calculated by linearized catch curve analysis and resulted a rate of Z = 0.88 (1989/90) and Z = 0.96 (1987 ... production. A comprehensive review of the present state of knowledge was undertaken by Miller and Hampton ... (1989) who documented the progress since the report by Everson (1977). On the other hand this review ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 159–176 : Author(s): Siegel, V.