Search results

1. Ocean acidification and the Southern Ocean

   , including the Southern Ocean. The relative undersaturation of CaCO3 in the Southern Ocean suggests that ... organisms such as the pteropods that form the base of much of the Southern Ocean food chain. Orr et al (2005 ... ) predicted that under the Intergovernmental Panel on Climate Change (IPCC) IS92a warming scenario, which ... assumes “business as usual”- emissions leading to 778 ppm of CO2 in the atmosphere by 2100- aragonite will ...

   Meeting Document : CCAMLR-XXIX/BG/24 : Author(s): ASOC Observer

2. Trophic interactions and population trends of killer whales (Orcinus orca) in the southern Ross Sea

   orca) are reported for the vicinity of Ross Island, Ross Sea, Antarctica, between 2002 and 2010 ... . Updating an earlier report, the frequency of sightings and the number of individuals per sighting of Ross ... coincident with a decrease in the number and size of an important prey: Antarctic toothfish (Dissostichus ... important to the whales, a relationship with potential parallels to that known between well-studied fish ...

   Meeting Document : WG-FSA-12/P03 : Author(s): D.G. Ainley and G. Ballard

3. Further development of a spatially explicit population dynamics operating model for Antarctic toothfish in the Ross Sea region

   model for Antarctic toothfish over the entire Ross Sea region, for a medium scale spatial resolution ... (189 spatial cells) covering the Ross Sea region. The model was developed as a generalised Bayesian ... population dynamics model implemented using the Spatial Population Model software (SPM), and a single sex age ... appeared to broadly reflect the hypothesised spatial distribution of Antarctic toothfish, suggesting that ...

   Meeting Document : WG-SAM-13/35 : Author(s): S. Mormede, A. Dunn, S. Parker and S. Hanchet (New Zealand)

4. Revised assessment models for Patagonian toothfish in research block C of Division 58.4.4, Ob & Lena Banks for the years 1989/1990 to 2012/13

   eleginoides in research block C in Division 58.4.4 b on the assumption of constant year class strength and no ... IUU fishing occurrence in the block. The five models are as follows: 1) catch at length model as ... parameters were not estimated in these models according to the recommendations in the last WG-FSA meeting. In ... addition, proportion mature for ages was calculated on the assumption of logistic curve fitting for the ...

   Meeting Document : WG-SAM-14/15 : Author(s): K. Taki (Japan)

5. Winter distribution and condition of Antarctic krill in relation to sea-ice and water column production in the South Shetland Islands during Austral Winter 2013

   stations around the South Shetland Islands during a 30 day cruise between 10 August and 9 September 2013 ... . Abundance and demographic patterns revealed that Antarctic krill were concentrated in the southern ... during the 2012 winter survey (Reiss and Jones 2013; WG-EMM 13/40) but similar in size to krill found in ... the German survey during summer in 2013 (Siegel 2013; WG-EMM 13/24). Large krill (>50mm), although ...

   Meeting Document : WG-EMM-14/13 : Author(s): C.S. Reiss, J. Walsh, K. Dietrich and J.A. Santora (USA)

6. Acoustic monitoring and evaluation of krill in the Antarctic ecosystem Bransfield Strait and around Elephant Island during ANTAR XXI and XXII, aboard RV Humboldt, Peru

   Abstract:  Monitoring and hydroacoustic assessment of the distribution and biomass of krill ... (Euphausia superba) was held on board the BIC Humboldt during scientific campaigns Peru to Antarctica in the ... austral summer: Antar XXI (15 to 22 February 2013) and Antar XXII (22 to 31 January 2014). The areas ... ; ANTAR XXII: 21 070.62 nm2 with 17 transects).The SIMRAD EK60 scientific echosounder used for ...

   Meeting Document : WG-EMM-16/76 : Author(s): R. Cornejo, M. Flores and J. Zuzunaga

7. New Zealand research voyages to the Ross Sea region in 2018 and 2019

   to the Ross Sea region, and gives notice of a New Zealand 2019 research voyage to the Ross Sea region ... . The Ross Sea Environment and Ecosystem Voyage 2018 (TAN1802), took place from 9 February to 21 March ... 2018, departing from and returning to Wellington, New Zealand. Science objectives for the voyage were ... aligned with the Ross Sea region Marine Protected Area Research and Monitoring Plan, under New Zealand’s ...

   Meeting Document : WG-EMM-18/02 : Author(s): D. Bowden, R. O’Driscoll and M.H. Pinkerton

8. DEVELOPMENT OF A SPATIALLY EXPLICIT AGE-STRUCTURED STATISTICAL CATCH-AT-AGE POPULATION DYNAMICS MODEL FOR MODELLING MOVEMENT OF ANTARCTIC TOOTHFISH IN THE ROSS SEA

   a preliminary development version of this model to Antarctic toothfish in the Ross Sea as an age and ... -based population age structure in a spatially explicit manner. The model is parameterised by both ... population processes (i.e., ageing, recruitment, and mortality), as well as movement processes defined as the ... designed to be flexible, allow for the estimation of both population and movement parameters based on local ...

   Meeting Document : WG-SAM-08/14 : Author(s): A. Dunn and S. Rasmussen (New Zealand)

9. Shifts in the demersal fish community of South Georgia

   Abstract:  The heavily exploited fish stocks of South Georgia have been declining since the early ... 1970's. Use of a non-parametric method revealed a significant change in this community from the ... 1986/87 survey to the 1987/88 survey. This change was the result of reductions in the abundance of ... Champsocephalus gunnari and Notothenia squamifrons, and the increased presence of Pseudochaenichthys georgianus ...

   Meeting Document : SC-CAMLR-VII/BG/24 : Author(s): United States of America

10. Plan of research program of the Ukraine in Subarea 48.2 in 2017 (third season)

    Abstract:  The third year research plan of Ukraine in subarea 48.2 by the fishing vessel SIMEIZ is ... provided. The survey design remains the same as in the second (2016) year. Ukraine proposes to divide the ... stock (the catch limit) in the researched area on two blocks – Northern and Southern, in order to reach ... maximum coverage of the subarea by the research stations. Author(s):  L. Pshenichnov, S. Ajiumerov and D ...

    Meeting Document : WG-SAM-16/23 : Author(s): L. Pshenichnov, S. Ajiumerov and D. Marichev

Pages