Resultados de la búsqueda
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Developing research on Antarctic krill to facilitate the development and updating of feedback management procedures
Abstract: Antarctic krill fisheries have the potential to be in the top 10 fisheries of the world ... developing a feedback management procedure for these fisheries. Implementation of such a feedback management ... types of data that can be realistically obtained and monitored on the productivity of the ecosystem and ... 2002-2004. Since that time, there have been shifts in the behaviour and methods of the krill fishery ...
Meeting Document : WG-EMM-13/12 : Autor(es): E.J. Murphy, R.D. Cavanagh (United Kingdom), A. Constable (Australia), E.H. Hofmann (USA), S.L. Hill, N.M. Johnston, P.N. Trathan and J.L. Watkins (United Kingdom)
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Measurements of differences in the target strength of Antarctic krill (Euphausia superba) swarms at 38 kHz and 120 kHz
Paper Title: Measurements of differences in the target strength of Antarctic krill (Euphausia ... (36 to 60 mm) Antarctic krill (Euphausia superba) at 38 and 120 kHz have been inferred from ... furthermore did not exhibit the same frequency-dependence as the data from the krill, so it can be discounted ... WG-KRILL-90/28 MEASUREMENTS OF DIFFERENCES IN THE ... TARGET STRENGTH OF ANTARCTIC KRILL (EUPHAUSIA SUPERBA) SWARMS AT 38 KHZ AND 120 KHZ I. Hampton ... * * Abstract Differences in the target strength of adult (36 to 60 mm) Antarctic krill (Euphausia superba ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 75–86 : Autor(es): Hampton, I.
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The utilization of seabird censuses for krill monitoring
Paper Title: The utilization of seabird censuses for krill monitoring Abstract / Description ... : The possibility of using bird observations made at sea as a means of monitoring krill in the Antarctic ... Ocean is explored. No variation source directly linked with krill was identified by means of ... krill abundance. A vector close to multi-normality was obtained, thus suggesting that refinements of the ... all variates and krill related variates (as per literature information) alone. Data dimensionality ... the present body of data. IV. with the same subsets defined for krill and latitude treatments in ... certain region will provide a data set to be compared with those where krill has been independently ... - 393 - THE UTILIZATION OF SEABIRD CENSUSES FOR KRILL ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 393-425 : Autor(es): Marschoff, E.R., J.G. Visbeek and L.R. Fontana
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Precautionary, ecosystem-based management for the Antarctic krill fishery: a work in progress
provides an update on the krill fishery; discusses the consideration of climate change in krill fisheries ... Abstract: The Antarctic krill fishery is expanding at a time when the Antarctic Peninsula is ... marine ecosystems and will almost certainly affect krill. It is therefore CCAMLR’s responsibility to ... enhance its precautionary management of the krill fishery in line with Convention objectives. This paper ...
Meeting Document : SC-CAMLR-XXXVII/BG/17 : Autor(es): Submitted by ASOC
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Using stationary acoustic platforms to assess precision and accuracy of acoustical krill surveys
data were collected both during day and night for the 2019 Scotia Sea large-scale krill monitoring ... issues of krill migrating too close to the surface to be acoustically detected, as well as potential ... survey. Data from upward-looking, stationary platforms offer unique opportunities for assessing the ... effects of krill vertical distribution on survey results. The Institute of Marine Research, Norway has on ...
Meeting Document : WG-EMM-2019/32 : Autor(es): T. Klevjer, G. Skaret and B.A. Krafft
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Annual migrations of pelagic fish stocks into a krill hotspot
Abstract: We report here on the existence of seasonal fish migrations into a krill hotspot ... acoustic data, but the behaviour displayed suggests that the fish are planktivorous. Furthermore, the ... acoustic data suggest that they may form high density schools during daytime, that could not be separated ... from krill on a single frequency. Trawl catches in the area during 2019 gave high densities of mackerel ...
Meeting Document : WG-EMM-2019/33 : Autor(es): T. Klevjer
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THE ASAM 2010 ASSESSMENT OF KRILL BIOMASS FOR AREA 48 FROM THE SCOTIA SEA CCAMLR 2000 SYNOPTIC SURVEY
the CCAMLR 2000 synoptic survey data to generate a quality checked krill biomass for area 48 following ... estimated from acoustic and net data collected during the international multi-ship krill biomass in the ... the acoustic protocol identified in ASAM 2009. The total biomass of krill in the Scotia Sea was ... Scotia Sea in 2000 to be 60.3 million metric tonnes. This report aims to document the parameters utilised ...
Meeting Document : WG-EMM-11/20 : Autor(es): S. Fielding and J. Watkins (UK) and ASAM participants: A. Cossio, C. Reiss and G. Watters (USA), L. Calise and G. Skaret (Norway), Y. Takao (Japan), X. Zhao (People’s Republic of China), D. Agnew (UK) and D. Ramm and K. Reid (CCAMLR Secretariat)
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Development of methods relevant to feedback management (FBM) for the krill fishery
. Thus, data supporting FBM as an integral part of the broader management strategies of the krill ... Protected Area (MPA) development in CCAMLR Planning Domain 1 encompasses the major krill fishing grounds ... fisheries within Domain 1 are critical if the fishery is to be managed by an empirical understanding of ... krill density, distribution, availability and predator needs. A future developed FBM system, as ...
Meeting Document : WG-EMM-18/08 : Autor(es): B.A. Krafft, A. Lowther, G. Macaulay, M. Chierici, M. Biuw, A. Renner, T.A. Klevjer, R. Øyerhamn, C.A. Cárdenas, J. Arata, A. Makhado, C. Reiss and O.A. Bergstad
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COMPARING CEMP INDICES TO INFORM FEEDBACK MANAGEMENT OF THE ANTARCTIC KRILL FISHERY
Abstract: Despite uncertainties about interactions between ecosystems and fisheries, the ability ... to adjust activity of the Antarctic krill fishery based on the state of krill-dependent predators is ... illustrate sensitivity to the choice of data and impact, and to suggest that useful comparisons can be made ... in treatment data or minor shifts in the mean of treatment data resulted in readily identifiable ...
Meeting Document : WG-EMM-11/25 : Autor(es): J.T. Hinke and G.M. Watters (USA)
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Density estimation of Antarctic krill (Euphausia superba) around South Shetland Island and Elephant Island (Subarea 48.1) using two frequencies with 38 and 120 kHz
in 2019. Krill were collected by the commercial midwater trawl fishing vessel. The data were ... Abstract: The density of Antarctic krill swarm inhabiting the Subarea 48.1, which includes the ... acoustics survey. Acoustic data were collected using two frequencies with 38 and 120 kHz from March 8 to 15 ... software for swarm identification) and interval method based on distribution of (a) total krill AT and (b ...
Meeting Document : SG-ASAM-2019/03 Rev. 1 : Autor(es): S. Choi, S. Chung, I. Han, W. Oh, D. An and K. Lee