Search results
-
Problems of population age structure determination of Euphausia superba Dana using an example from the Antarctic Peninsula area and adjacent waters
-BOCTOqHOrO THXOOKeaHCKoro oacceHHa. PasBllTHe oHocesoHH@x npo~eccoB B CHCTeMe AUT cne~yeT saKOHO ... pacnono~eH@ cpaBHHTenbHo He~aneKO OT oepera. Tor~a ~e B neTHe-oceHHHH ce- 30H 1981 r. 3HaqHTenbHO ~anee ... examines the size structure of populations of E. superba in relation to their habitat, on the basis of an ... analysis of data collected by the author during the 1981 season in the region of the Antarctic Peninsula ... similar conditions. Hypotheses are formulated regarding the age and growth of E. superba; in addition ... , data are cited on the growth rates of krill in relation to feeding conditions, temperature factors and ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 227-270 : Author(s): Spiridonov, V.A.
-
Genetic variations and population structure of krill from the Prydz Bay region of Antarctic waters
npo6hl 6hInH nonyqeHhl OT ogHOH H TOH ~e pa3MHo~a~eHCH nonynHLtHH KpHnH. Pe3yn hTa ThI 3Toro ... results of this study agree closely with genetic data from other studies on krill in the Atlantic sector ... Paper Title: Genetic variations and population structure of krill from the Prydz Bay region of ... consistent with the hypothesis that all samples were derived from a single breeding population of krill. The ... of the Southern Ocean, suggesting that krill stocks over at least 6000 kilometres of Antarctic waters ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 271-273 : Author(s): MacDonald, C.M., R. Williams and M. Adams
-
The utilization of seabird censuses for krill monitoring
: 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 correspondence analysis ... will allow the discrimination of krill levels by means of bird counts thereby providing an efficient tool ... The possibility of using bird observations made at sea as a means of monitoring krill ... concentrations by means of univariate ANOVA under the conservative degrees of freedom formulation; - 406 ... /9 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 correspondence ... of the technique will allow the discrimination of krill levels by means of bird counts thereby providing ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 393-425 : Author(s): Marschoff, E.R., J.G. Visbeek and L.R. Fontana
-
Sensitivity investigation of the SDWBA Antarctic krill target strength model to fatness, material contrast and orientation
approximation model is recognised as stateoftheart in predicting acoustic target strength (TS) from ... is re cognised as stateoftheart in predicting TS from fluidlike zooplankton (Stanton and Chu, 2000 ... in a multifrequency context for estimating the mean length and density of identi- fied krill aggregations along ... of orientations θ is typically assumed as a Gaussian distribution defined by its mean and standard deviation ... model is recognised as state-of-the-art in predicting acoustic target strength (TS) from fluid-like ... TS of Antarctic krill (Euphausia superba) for use in the acoustic echo-integration method. In this ... the distribution of animal orientations. Due to the high variability of TS to realistic changes in ... variability of krill in the area of investigation. In a multifrequency context, the girth–length relationship ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 97–122 : Author(s): Calise, L. and G. Skaret
-
A statistical method for estimating the level of IUU fishing: application to CCAMLR Subarea 48.3
for the purposes of the estimation of fish and bird catch associated with IUU fishing. The mean and variance ... summer and one winter period. The estimated mean toothfish catches attributable to IUU fishing were 776 ... for the purposes of the estimation of fish and bird catch associated with IUU fishing. The mean and variance ... summer and one winter period. The estimated mean toothfish catches attributable to IUU fishing were 776 ... of the estimation of fi sh and bird catch associated with IUU fi shing. The mean and variance of fi sh catch rate ... period. The estimated mean toothfi sh catches attributable to IUU fi shing were 776, 1 019 and 198 ... of overlap of the IUU and FPV cruises rather than for the whole FPV cruise. But this would mean ... in South Georgia and the South Sandwich Islands have a mean of 355 tonnes (SD 177, n = 56), equivalent ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 119–141 : Author(s): Agnew, D.J. and G.P. Kirkwood
-
Operational interactions of sperm whales and killer whales with the Patagonian toothfish industrial fishery off southern Chile
(n = 3). The mean rate of depredation was 3% (±2% CI 95%; n = 180 sets) and ranged between 0 and 100%. Considering ... , with a mean loss per set of US$138 (CI 95% US$74.76–249.3). File: 08huckegaete-etal.pdf ... (n = 121), heads (n = 16) and trunks (n = 3). The mean rate of depredation was 3% (±2% CI 95 ... , with a mean loss per set of US$138 (CI 95% US$74.76–249.3). ... ) and trunks (n = 3). The mean rate of depredation was 3% (±2% CI 95%; n = 180 sets) and ranged between ... 302–153 745) for the whole fl eet, with a mean loss per set of US$138 (CI 95% US$74.76–249.3 ... operations, 108 groups of sperm whales (n = 674, mean group size = 6), 18 groups of killer whales (n = 77 ... , mean = 4) (Figure 2) and one group of pilot whales (n = 15) were recorded. Interactions with fi shing ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 127–140 : Author(s): Hucke-Gaete, R., C.A. Moreno and J. Arata
-
Age determination of Notothenia gibberifrons from the South Shetland Islands, Antarctic Peninsula subarea (Subarea 48.1)
to be the most reliable method. Mean length data at age presented here for Low I. specimens were compared ... determination by otolith cross sections proved to be the most reliable method. Mean length data at age presented ... determination by otolith cross sections proved to be the most reliable method. Mean length data at age ... . (1985) compiled data from different sources on mean total length and mean total weight for each age ... by means of otolith analysis and emphasize the importance of the exchange system established by CCAMLR ... years, respectively. Comparison of mean length at certain age groups suggested similarity in growth ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 143-160 : Author(s): Barrera-Oro, E.
-
Estimation of effective sample size for catch-at-age and catch-at-length data using simulated data from the Dirichlet-multinomial distribution
of this ESS with relative mean square error two orders of magnitude worse than the best haul-level method ... inaccurate estimates of this ESS with relative mean square error two orders of magnitude worse than the best ... method gave very inaccurate estimates of this ESS with relative mean square error two orders ... assessments, Hrafnkelsson and Stefánsson (2004) suggested for the G-M model that the MCMC mean vector ... determined by the h-fold convo- lution of density function (5) on itself (Feller, 1968). However, the mean ... to the true distri- bution of N is correct up to second-order moments in that the mean and (co)variance ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 115–138 : Author(s): Candy, S.G
-
Distribution, biomass and characteristics of the Euphausia superba fishery around South Georgia (Subarea 48.3)
circulation system is unfavourable, which means the absence of eddy formations, krill do not usually form ... system is unfavourable, which means the absence of eddy formations, krill do not usually form ... circulation system is unfavourable, which means the absence of eddy formations, krill do not usually form ... ,l{CTaBHTeJIbHbIX CbeMOK, BbInOJIHeHHbIX B 3TOM paUOHe COBeTCKHMH YQeHbIMH 3a nepHO,l{ C 1974 no 1988 rr ... 6MOMaCCbI KPMJISI peKoMeH~yeTcSI npOBeCTM 60JIee WMpOKMe HCCJIe~OBaHHSI, BKJIIOl..IalO~Me BbIn ... biomasa mas fiables. 125 1. IN1RODUCflON The South Georgia area holds a special place among those ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 123–147 : Author(s): Latogursky, V.I., R.R. Makarov and L.G. Maklygin
-
An overview of Southern Ocean zooplankton data: abundance, biomass, feeding and functional relationships (submitted to the 2008 Joint CCAMLR-IWC Workshop)
compilations. Likewise, stenothermy (narrow temperature tolerance) means that fixed (Q10-type) temperature ... are reported in global literature compilations. Likewise, stenothermy (narrow temperature tolerance) means ... , stenothermy (narrow temperature tolerance) means that fixed (Q10-type) temperature relationships based ... several mm long) means that this single group con- tributes to the food web in multiple ways. Epipelagic ... ; Kawaguchi et al., 2006; Atkinson et al., 2009). This would be consistent with a mean daily ration ... of Kerguelen and South Geor- gia (Ward et al., 1995; Labat et al., 2005) mean an annual production of 3.6 mg ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 171–218 : Author(s): A. Atkinson, P. Ward, B.P.V. Hunt, E.A. Pakhomov and G.W. Hosie