Resultados de la búsqueda
-
Vast assembly of vocal marine mammals from diverse species on fish spawning ground
. The system transmits broadband signals from 700- 1500 Hz and a towed array receives the returned ... echoes used in the assessment of prey abundance and distribution. Periodically, only the receiver array ... was operated to listen to whale vocalization. The vocalization identifies the animals and the long ... predators and prey. The Ocean Acoustic Waveguide Remote Sensing (OAWR) system is at present tailored to ...
Meeting Document : WG-EMM-16/P01 : Autor(es): D. Wang, H. Garcia, W. Huang, D.D. Tran, A.D. Jain, D.H. Yi, Z. Gong, J.M. Jech, O.R. Godø, N.C. Makris and P. Ratilal
-
Dominio 1 Propuesta Preliminar de Área Marina Protegida Parte B: Objetivos de Conservación
Abstract: This document contributes to the planning process for the designation of a Domain 1 MPA ... summarizes the results and decisions taken in a series of international workshops specifically developed to ... assist in the Domain 1 MPA planning process, including the 2012- First International Workshop held in ... Valparaiso, Chile, (WG-EMM-12/69); the 2013 Binational Workshop (Chile-Argentina) held in La Serena, Chile ...
Meeting Document : SC-CAMLR-XXXVI/BG/22 : Autor(es): Delegations of Argentina and Chile
-
Characteristics of interannual variation in aggregation and diurnal vertical migration of Antarctic krill at South Georgia during winter
Georgia during winter based on Japanese krill fishery data during the period 1990-2012. High density and ... predictable fishing grounds occurred in the restricted areas throughout the study period. Main results are as ... predator performance were poor in the previous summer. Krill recruitment index at South Georgia suggested ... the strong influence in recruitment from the Antarctic Peninsula in the 1990s, whereas the influence ...
Meeting Document : WG-EMM-18/34 : Autor(es): T. Ichii, Y. Mori, P.N. Trathan, K. Mahapatra, M. Okazaki, T. Hayashi and T. Okuda
-
A comparison of model predictions from KPFM1 and KPFM2
Abstract: We compare two versions of the krill-predator-fishery model to demonstrate the extent ... to which the predictions of KPFM1 can be reproduced with KPFM2. We also discuss the incorporation of ... seasonality into parameter estimates and a necessary change in the predator recruitment function of KPFM2 ... . These comparisons provide a preliminary indication that the substantial changes in the structure and ...
Meeting Document : WG-EMM-06/20 : Autor(es): J. Hinke, G. Watters (USA), S. Hill and K. Reid (United Kingdom)
-
Project of a software catalog of skeletal elements from Antarctic fish species, including some identification facilities
Abstract: In our study skeletal elements from fish species of the Antarctic waters were extracted ... by bioenzyme and compared with the aim to provide a computer supported identification system ... , including a database of bone pictures and in the near future various identification keys as well, completed ... by a simple tool to compare the same skeletal elements of different species. In the database most of ...
Meeting Document : WG-FSA-05/35 : Autor(es): J. von Busekist, M. Vacchi and G. Albertelli (Italy)
-
Spatial distribution of Champsocephalus gunnari in Subarea 48.3. Some implications for parameter estimation
Abstract: Results of the analysis of three consecutive cruises to subarea 48.3 are analyzed. A ... significant variance component associated with the formation of clusters of stations was found as well as a ... general trend for increasing densities since 1994. The significant variance component obtained for ... (as in the estimation of the variance of the mean density) might result in a gross underestimation of ...
Meeting Document : WG-FSA-96/30 : Autor(es): Calcagno, J., Gonzalez, B., Marschoff, E.
-
Method of age determination for Antarctic toothfish (Dissostichus mawsoni)
Abstract: This work is based on material from Antarctic toothfish, collected in the Ross Sea from ... December 2004 to March 2005 on the longliner “Volna”. Age was determined for 364 individuals. Currently ... widely applicable "the break and burn method" was used in the present work (Chilton, Beamish ... , 1982; Penttilla, Dery, 1988). According to the method, otolith is broken into two parts across the core ...
Meeting Document : WG-SAM-12/18 : Autor(es): E.N. Kyznetsova, A.F. Petrov and V.A. Bizikov (Russia)
-
Penguin monitoring via remote sensing
Abstract: Picking up the calling of the ATCM XXXIV to the Treaty Parties to intensify their ... the Antarctic, Germany currently carries out a feasibility study on penguin monitoring using such ... techniques. Additionally, CEP representatives and scientists discuss on an informal level the need and the ... general possibilities of a penguin monitoring in the Antarctic Treaty area based on remote sensing ...
Meeting Document : WG-EMM-12/71 : Autor(es): H. Herata and F. Hertel (Germany)
-
A generalized discriminant for sexing fulmarine petrels from external measurements
birds to predict the sex of unknown individuals in field studies. Geographic variation in size and shape ... often limits the predictive value of a discriminant function to the population from which it was derived ... , Daption capense; and Snow Petrel, Pagodroma nivea) assigned 81 to 98% of birds in the samples to the ... correct sex, but the validity of each discriminant applied to alternative populations remained ...
Meeting Document : WG-CEMP-94/24 : Autor(es): J.A. van Franeker and C.J.F. ter Braak (The Netherlands)
-
AGE AND GROWTH OF SPINY ICEFISH, CHAENODRACO WILSONI REGAN, 1914, OFF JOINVILLE-D'URVILLE ISLANDS (ANTARCTIC PENINSULA)
January 2007. A total of 218 specimens were selected for the study, consisting of 120 females and 98 males ... . The age of fish was estimated by counting annuli on transverse sections obtained by grinding and ... polishing whole otoliths embedded in epoxy resin in moulds. The precision of age estimates between readings ... was tested applying both the average percent error (APE) and the coefficient of variation (CV). The ...
Meeting Document : WG-FSA-08/33 : Autor(es): M. La Mesa, A. De Felice (Italy), C.D. Jones (USA) and K.-H. Kock (Germany)