Search results
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Estimating unaccounted fishing mortality in the Ross Sea region and Amundsen Sea (CCAMLR Subareas 88.1 and 88.2) bottom longline fisheries targeting Antarctic toothfish
mortality after being lost. The following terminol- ogy is used to distinguish categories of gear loss ... being overtaken by moving ice (J. Fenaughty, Silvifish Inc., Wellington, pers. comm ... . However, fish that are captured by fishing gear that is not subsequently retrieved are generally not ... unaccounted fishing mortality from lost lines in these fisheries is provided. These estimates suggest that on ... average 208 tonnes of Antarctic toothfish mortality may be unaccounted for annually. While the current ... estimates may be improved through the adoption of better data reporting practices, these estimates were ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 17–30 : Author(s): Webber, D.N. and S.J. Parker
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An impact assessment framework for bottom fishing methods in the CAMLR Convention Area
and dragged by moving ice (additional impact foot- print arises from anchors and broken backbone being ... (with hooks) prior to being lifted free of the ocean floor. Effects on VME taxa are largely unknown because ...
Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 195–210 : Author(s): Sharp, B.R., S.J. Parker and N. Smith
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The survivorship of rays discarded from the South Georgia longline fishery
in the Ross Sea indicated that skates can survive being captured and released by longline fi sheries ... - sideration. Normally only skates that are alive and undamaged are selected, with animals not being deemed ... fi t for tagging being discarded. This means that a potentially large and injured proportion ... of Antarctic and sub-Antarctic waters, conservation measures are continually being revised. During ... between 1 500 and 2 000 m. These findings support CCAMLR’s recommendation that skates and rays be cut from ... . There were some suggestions (not statistically significant) that wind speed (i.e. weather conditions ... can also be used to calculate the expected skate mortality within the fishery, based on depth of ... capture. Further survival experiments should be conducted, particularly in shallow waters, where sampling ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 155–164 : Author(s): Endicott, M. and D.J. Agnew
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Telemetry monitoring of ecological resources
also be made using satellites to directly monitor or relay data. progress is also being made ... is determined by the energy source, with the most common energy source being a - 498 - lithium primary cell ... and lasting about one year are routinely being deployed on caribou23 , Antarctic seals and polar bear ... by several species of birds with mixed success. The users indicated the weight (170 gm) and bulk were too ... including paper recorders and data recording using microprocessors with semiconductor memory. Satellite ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 495-511 : Author(s): Kuechle, V.B.
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Alternative methods for determining subarea or local area catch limits for krill in Statistical Area 48
are categorised as being both biologically explicit and immediately available for implementation. However, two ... are categorised as being both biologically explicit and immediately available for implementation. However, two ... are categorised as being both biologically explicit and immediately available for implementation. However, two ... orpaHH4eHHH Ha 06beM BblJIOBa KPHJI5I no nO,l{paHOHaM HJIH JIOKaJIbHbIM paHOHaM OTHOCHTeJIbHO meCTH ... necessary to implement this alternative is already being collected. However, more data needs ... of the krill fishery without being biologically explicit?" The nine alternatives were arranged in a tradeoff ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 237–249 : Author(s): Watters, G. and R.P. Hewitt
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Quantifying vessel performance in the CCAMLR tagging program: spatially and temporally controlled measures of tag-detection rates
with, whereby a performance higher than one might be due to a vessel being only com- pared with vessels ... that was introduced from fish that were within the chosen distance from the case fishing event not being equally ... the maximum distance between fishing events compared. The results suggest that the method can be ... and temporal confounding. This paper presents a method that utilised most of the data while also ... 88.2, as well as changes in the performance of some vessels over time. Further investigations show that ... potentially be developed as a more general method for comparing relative performance of spatially and ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 73–80 : Author(s): Mormede, S. and A. Dunn
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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
". 1. WINTER SOUTH GEORGIA ZONE SURVEY, 28 JULy TO 21 AUGUST, 1983 Methods The study was a grid survey ... of the population. It would also be pertinent to measure the wind strength and direction in the bay during August ... layers (undiluted by the mixing effect of the wake of a ship). For some species it may be necessary ... Champsocephalus gunnari hatch at about 12.5 mm total length in August to October. An average growth rate of 0.35 ... Georgia, with special reference to the early life history of Champsocephalus gunnari. File: 04-North.pdf ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 105-141 : Author(s): North, A.W.
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Status of the krill stock around Elephant Island in 1991/92 and 1992/93
bimodal with length classes around 35 mm being under-represented (Figure 4). During February/March ... 3 n e @ a ~ ~ . PMCYHOK 4: Y ~ C T O T H O ~ PaCnpeAeneHHe flnHHb1 KPMnR B TpeX rHe3naX H o6qee B3BeUIeHHOe YaCTOTHOe ... KpHnsI B TpeX rHe3flaX Pi 06114~4% ~3BeUleHHb1fi COCTaB c~aflZ4fi n o n o ~ o s p e n o c ~ ~ B paiio ... rHe3naX l4 06llJee B3BeUIeHHOe YaCTOTHOe pacnpenenewie nnmbr B pafio~e o-sa ... other years appears to be associated with female maturity development and spawning during the early ... austral summers of 1991/92 and 1992/93 are described and compared with information from previous years ... appears to be a recurring and predictable aspect of the krill stocks in the Antarctic Peninsula region ... appeared to be affected by dense salp concentrations during 1992/93 and 1989/90. File: 02loeb-siegel.pdf ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 7–33 : Author(s): Loeb, V. and V. Siegel
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Composition and characteristics of ichthyofauna in pelagic waters of South Georgia (Subarea 48.3)
COnpOBOXHaJIACb CYTOVHbIMM CTaHqMSIMM A J I X 113YYeHPiR BePTHKanbHbIX ~MrpaqHg ~ a a 6 o n e e MaCCOBbIX BMAOB ... 18 Pelagic surveys were carried out in the period from April to August in shelf waters from ... being studied was highly abundant did some catches from the northern shelf area approach hundreds ... , being demersal fish, are to a certain extent associated with the pelagic zone throughout their entire ... fish taken by the sampling trawl in the water column was found to be krill. Aggregations of juvenile C ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 125–164 : Author(s): Frolkina, G.A., M.P. Konstantinova and I.A Trunov
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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
O ~ ~ ~ K T O B IIMTaHAR B PaqIlOHe C. gunnari, HM ~ 0 n e f i XenygKOB C nnue316e3 IIAUM. YeTblpe C'be ... COrJIaCyeTCX C MH@op~aqkIefi, IIoIlyYe~~ofi B pe3yJIbTaTe aKYCTAYeCKIIX C'beMOK M MOHMTOPMHra IIATaIoIQMXCR ... (6-8% at SG and SR), being virtually replaced by T. gaudichaudii (69% at SG, 56% at SR), mysids (24% at SG ... and Thysanoessa sp., which are known to be important alternative food in years of krill scarcity, as ... of the main prey items in the diet of C. gunnari, as well as of the proportions of stomachs with ... phenomenon which could be caused by several concurrent factors. The variation of the diet according to the ... of krill in Subarea 48.3 during the period investigated can be defined as low in 1994 (equivalent to ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 103–123 : Author(s): Barrera-Oro, E., R. Casaux and E. Marschoff