WG-EMM-18

Soumis par:
Doro Forck (Secrétariat de la CCAMLR)

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Résumé:

On behalf of the Scientific Committee Bettina Meyer (Germany) received the mandate to initiate a krill specialist group within SCAR’s Life Sciences Group with strong linkage to CCAMLR. In this regard a proposal was submitted on 18^th February 2018 to SCAR (see attachment). The defence of the proposal is on the 18^th June 2018 at the SCAR Open Science Conference in Davos. An Read More
Soumis par:
Bettina Meyer (Allemagne)

Approuvé par:
Thomas Brey

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Résumé:

This paper provides a summary of research carried out during New Zealand’s 2018 voyage 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 Read More
Soumis par:
Alistair Dunn (Nouvelle-Zélande)

Approuvé par:
Alistair Dunn (Nouvelle-Zélande)

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Résumé:

During the 1995 and 1996 summer seasons the foraging patterns of the Antarctic Shag Phalacrocorax bransfieldensis were studied by direct observation on individuals breeding at Harmony Point, Nelson Island, South Shetland Islands. During pre-laying and incubation individuals of both sexes usually foraged once a day, females early in the morning and males when their partners returned to Read More
Soumis par:
María Mercedes Santos (Argentina)

Approuvé par:
Enrique Marschoff (Argentina)

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Résumé:

In order to understand interspecific trophic relationships among top predators, we analyzed diet information on nine bird and two seal species collected in the austral summer from 1996 to 2000 at South Orkney Islands. Overall, the diet of most of the predators was mainly composed of krill, fish or penguins. The re-occurrence of prey among predators was intermediate and ranged from 25.3 to 36.7 Read More
Soumis par:
María Mercedes Santos (Argentina)

Approuvé par:
Enrique Marschoff (Argentina)

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Résumé:

During open discussions at the Third International Symposium on Krill (St Andrews, Scotland, June 2017) attended by representatives of the Association of Responsible Krill harvesting companies (ARK), the Marine Stewardship Council (MSC) and CCAMLR, it became apparent that no bycatch of Ice krill (Euphausia crystallorophias) had been reported from fishing vessels targeting Antarctic Read More
Soumis par:
Chris Darby

Approuvé par:
Chris Darby

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Résumé:

This paper provides an update on the joint UK-Norway MMAK project, funded by the Antarctic Wildlife Research Fund, to improve current understanding of the regional and local-scale processes that influence the distribution of Antarctic krill in CCAMLR Area 48, focussing in particular on the South Orkney Islands region.  MMAK uses modelling studies at varying spatial and temporal Read More
Soumis par:
Philip Trathan

Approuvé par:
Chris Darby

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Résumé:

Antarctic Krill, Euphausia superba, is the key species of the Southern Ocean ecosystem. Earlier analysis suggested decrease in krill abundance by 50% since the mid 1970’s to early 2000’s in the Southwest Atlantic Sector, which has been specifically linked to a decrease in extent and duration of sea-ice coverage. More recent studies suggest more complex and/or dynamic nature of krill Read More
Soumis par:
So Kawaguchi (Australia)

Approuvé par:
Dirk Welsford (Australia)

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Résumé:

The primary objective for this project is to develop knowledge on the marine environment essential for the implementation of a Feed-Back Management (FBM) system. In terms of FBM, Marine Protected Area (MPA) development in CCAMLR Planning Domain 1 encompasses the major krill fishing grounds. Thus, data supporting FBM as an integral part of the broader management strategies of the krill Read More
Soumis par:
Bjørn Krafft (Norvège)

Approuvé par:
Odd Aksel Bergstad (Norvège)

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Résumé:

Climate change will alter the structure and functioning of Southern Ocean ecosystems and affect the ecosystem services they provide. The impacts of climate change will require development of conservation and management strategies that anticipate and adapt to potential changes in krill population dynamics. A recent collaborative workshop between the Integrating Climate and Ecosystem Dynamics in Read More
Soumis par:
Susie Grant

Approuvé par:
Chris Darby

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Résumé:

The estimates of fur seal consumption of krill in subareas 48.1 to 48.3 which have been used in ecosystem modelling and CCAMLR’s risk assessment approach, are based on the distribution of fur seal breeding populations. Fur seal breeding colonies south of 60^o have remained relatively small and their biomass is orders of magnitude less than those of penguins. As a result the estimates Read More
Soumis par:
Simeon Hill (Royaume-Uni)

Approuvé par:
Chris Darby

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Résumé:

The RAPID-KRILL project is funded by the Antarctic Wildlife Research Fund to develop at-sea automated processing of acoustic data on fishing and research vessels. An update on the project progress is presented here, including an overview of the data processing methods.

Soumis par:
Philip Trathan

Approuvé par:
Chris Darby

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Résumé:

The previously presented document at the 2018 ASAM WG meeting (ASAM-18-07) described a design and plans for a synoptic krill acoustic survey in CCAMLR area 48 in 2019. The survey involves the collaborative efforts of Norway, Association of Responsible Krill fishing companies (ARK: companies from Norway, Korea, China and Chile), the United Kingdom, Ukraine, Korea and China, all of whom have Read More
Soumis par:
Bjørn Krafft (Norvège)

Approuvé par:
Odd Aksel Bergstad (Norvège)

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Résumé:

The aim of the ECOgaps is to improve the knowledgebase on physical conditions and biota east of the 0 meridian in the MPA planning Domain 4. Focusing on the Astrid ridge, the continental shelf off of Dronning Maud Land, and the Maud rise, multidisciplinary investigations will be conducted in 2019 by the RV Kronprins Haakon. In this working document, the cruise being planned is Read More
Soumis par:
Andrew Lowther (Norvège)

Approuvé par:
Odd Aksel Bergstad (Norvège)

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Résumé:

A Marine Ecosystem Assessment for the Southern Ocean (MEASO) is a quantitative assessment of the status and trends of habitats, species and food webs in different regions.  It aims to provide a common foundation for all end-users on which science can be developed, and policies and decisions can be made.  It is intended to enable managers to achieve consensus in adapting their Read More
Soumis par:
Dirk Welsford (Australia)

Approuvé par:
Dirk Welsford (Australia)

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Résumé:

Science based management of krill suffers from limitation of time-space information in distribution dynamics. Similarly, the industry burns unnecessary amounts of oil in long range searching of fishable biomass due to lack of density distribution information. In this paper, we demonstrate that new drone technology now available through the Sailbuoy concept, offers new opportunity for an Read More
Soumis par:
Olav Godø (Norvège)

Approuvé par:
Odd Aksel Bergstad (Norvège)

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Résumé:

The western Antarctic Peninsula (WAP) is warming rapidly and we need to understand the impact of these physical changes on the marine ecosystem. The WAP is surrounded by a complex marine food web involving a number of predator and prey populations, and empirical data on abundance and trends is required to understand these trophic dynamics. The apex predator inWAP coastal waters is the killer Read More
Soumis par:
George Watters (États-Unis d'Amérique)

Approuvé par:
George Watters (États-Unis d'Amérique)

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Résumé:

A dedicated krill survey for CCAMLR Division 58.4.1 during 2018/19 season will be carried out by Japanese research vessel, Kaiyo-maru. No krill biomass has been estimated in the Division since 1996 when Australia conducted BROKE. There are two main objectives of our survey: (1) estimation of krill biomass to update B₀ in the division and (2) oceanographic Read More
Soumis par:
Hiroto Murase (Japon)

Approuvé par:
Chiaki Yamada (Japon)

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Résumé:

Baleen whales are important components of the Antarctic marine ecosystem as ‘sea-based’ top predators. Information on their distribution, movement and abundance trend is important as input data for ecosystem modelling studies. Genetic analyses were conducted to investigate the population identity as well the individual identity of southern right whales distributed in summer in the Antarctic Read More
Soumis par:
Luis Alberto Pastene Perez (Japon)

Approuvé par:
Chiaki Yamada (Japon)

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Résumé:

This document is a short extraction from the article “Benthic ecoregionalisation and conservation issues in the French Exclusive Economic Zone of Kerguelen” submitted the 16/05/2018 to the journal CCAMLR Science for the proceedings of The Second Symposium on Kerguelen Plateau Marine Ecosystems and Fisheries (13–15 November 2017, Hobart, Tasmania). Full text, figures, results, Read More
Soumis par:
Alexis Martin (France)

Approuvé par:
Marc Eléaume (France)

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Résumé:

The Muséum national d’Histoire naturelle presented at the 2017 EMM Working Group of the CCAMLR a new data acquisition protocol for benthos bycatch in the French fisheries of the Southern Ocean. This new framework has been used to set the field work during the Poker 4 fish biomass survey. The protocol is based on the sampling of specimens and the weighing and photographic sampling of the whole Read More
Soumis par:
Alexis Martin (France)

Approuvé par:
Marc Eléaume (France)

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Résumé:

The spatial variability of krill flux in the Scotia Sea calculated by using the geostrophic method, is analysed. For this, CCAMLR-2000 international survey data was used. The analysis was carried out in the 0-500 m depth ranges 50 m layers. Water mass geostrophic circulation, spatial distribution of krill density, water flow intensity (m³/s) and krill biomass (g/m3) transported by Read More
Soumis par:
Svetlana Kasatkina (Fédération de Russie)

Approuvé par:
Svetlana Kasatkina (Fédération de Russie)

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Résumé:

During the 2017 CCAMLR WG-EMM Norway was requested to act towards the industry to ensure catch reporting in accordance with the present conservation measure (CM 21-03) and to investigate potential errors in historical catch report data. As a response, the Norwegian delegation presented a list of actions that would facilitate further consideration and clarification of these technical issues, Read More
Soumis par:
Georg Skaret (Norvège)

Approuvé par:
Odd Aksel Bergstad (Norvège)

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Résumé:

Experience gained through participation in international programmes like BIOMASS and the CCAMLR 2000 Survey has demonstrated that standardization of equipment and methods is one of the most crucial steps for any successful work during the field sampling period and later analytical work. The following net sampling and laboratory protocols are based on the protocols developed for the CCAMLR 2000 Read More
Soumis par:
Tor Knutsen (Norvège)

Approuvé par:
Odd Aksel Bergstad (Norvège)

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Résumé:

We provide a 2^nd update on the progress of our project “Tracking the overwinter habitat use of krill-dependent predators from Subarea 48.1”. The project was initiated with support from the CEMP Special Fund in 2015/16. Of 150 tags purchased in 2016, all have been deployed and the data collection phase has recently concluded. As of 28 May 2018, the last viable tags had ceased Read More
Soumis par:
Jefferson Hinke (États-Unis d'Amérique)

Approuvé par:
George Watters (États-Unis d'Amérique)

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Résumé:

The Pygoscelis penguin colonies census in the Vernadsky Antarctic station area has been provided during 2017-2018 breeding season. The Pygoscelis penguins in the region of research are mainly gentoo penguin, which has formed 14 autonomous colonies with about 13320 of breeding pairs total and about 780 immature penguins. The Adelie specie is much less common in the area and Read More
Soumis par:
Leonid Pshenichnov (Ukraine)

Approuvé par:
Kostiantyn Demianenko (Ukraine)

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Résumé:

We inform on the results of data validation experiment provided for pictures from time lapse cameras of the CEMP camera monitoring project of CCAMLR at Galindez Island gentoo colonies. During the 2017-2018 season biologists winterers at Vernadsky station, situated at Galindez Island, provided continuous observations every day of gentoo nests in the three sites where automatic time lapse Read More
Soumis par:
Leonid Pshenichnov (Ukraine)

Approuvé par:
Kostiantyn Demianenko (Ukraine)

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Résumé:

We provide an outline of data that can be generated from nest camera images and describe how they relate to the parameters outlined in the CEMP Standard Methods. We discuss where the two are similar, provide comment on nest camera data utility for CEMP, and outline gaps in our assessment of their use for this purpose. We provide suggestions for how CEMP data submission forms could be varied to Read More
Soumis par:
Louise Emmerson (Australia)

Approuvé par:
Dirk Welsford (Australia)

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Résumé:

We provide a brief update on the software developed for assessing nest camera images through the CEMP Special Fund project ‘Developing an image processing software tool for analysis of camera network monitoring data’. This CEMP Special Fund project was initiated in 2015/16 to refine existing software and develop post-processing code for data download according to specifications developed in Read More
Soumis par:
Louise Emmerson (Australia)

Approuvé par:
Dirk Welsford (Australia)

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Résumé:

• The diet composition of key species of penguin is currently monitored as part of the CCAMLR Ecosystem Monitoring Program (CEMP). Stomach lavage techniques are used in order to identify prey composition and mass. Analysing prey DNA in faeces may be a useful, less invasive, approach to complement existing diet monitoring.
• We undertook a pilot study to directly compare these two Read More
  Soumis par:
  Louise Emmerson (Australia)
  
  Approuvé par:
  Dirk Welsford (Australia)
  
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Résumé:

• Juvenile/larval fish taken as bycatch in the Antarctic krill fishery (CCAMLR subarea 48.1, 48.2 and 48.3) were identified by DNA barcoding and results compared with morphological identifications made on vessels by scientific observers.
• A total of 344 fish (primarily in the families Channichthyidae and Notothenidae) were identified using genetic barcoding markers.
• Read More
  Soumis par:
  Dale Maschette (Australia)
  
  Approuvé par:
  Dirk Welsford (Australia)
  
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Résumé:

In 2009, CCAMLR agreed that the establishment of a representative system of marine protected areas (RSMPA) by 2012 was a priority. This assessment shows that the Scientific Committee and Commission can be kept informed of progress towards this goal using a relatively short list of simple criteria that are based on robust ecological and experimental design principles, and the Commission’s Read More
Soumis par:
Dirk Welsford (Australia)

Approuvé par:
Dirk Welsford (Australia)

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Résumé:

The results of the research aimed at further substantiation and development of the Marine Protected Area in the area of the Ukrainian Antarctic Station Academician Vernadsky are presented. In order to study the structure and biodiversity of benthic communities in the water area of the Argentine Islands, the underwater research and acoustic survey were conducted. During the period of 2014-2016 Read More
Soumis par:
Leonid Pshenichnov (Ukraine)

Approuvé par:
Kostiantyn Demianenko (Ukraine)

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Résumé:

Summary

Over the past years, the subject of whether there is a functional overlap between the krill fishery and pelagic krill predators has been discussed throughout the SC-CAMLR Working Groups. Specifically, these discussions centre around two key issues: a) whether there are potential interactions and competition between the krill fishery and krill-dependent predators during Read More
Approuvé par:
Chris Darby

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Résumé:

We elucidated characteristics of interannual variability in density index, recruitment index and diurnal vertical distribution for Antarctic krill in krill fishing grounds (hotspots) at South 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 Read More
Soumis par:
Taro Ichii

Approuvé par:
Taro Ichii

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Résumé:

In order to adequately achieve CCAMLR’s conservation objectives and preserve the biodiversity of the Southern Ocean, a variety of ecosystems must be protected. This holds especially true for the benthic communities of this region that are characteristically mosaic in their distributions. As such, disparate communities cannot be assessed by a single blanket methodology, as explicitly expressed Read More
Soumis par:
Jefferson Hinke (États-Unis d'Amérique)

Approuvé par:
George Watters (États-Unis d'Amérique)

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Résumé:

High densities of pennatulaceans (Phylum Cnidaria: Order Pennatulacea), a vulnerable marine ecosystem (VME) indicator taxa, were encountered at three sites on the northeastern shelf of the South Orkney Islands (Subarea 48.2). The details of these encounters, utilizing occurrence and abundance in bottom trawl catches, are provided.  These three new sites are in close proximity to two other Read More
Soumis par:
Christopher Jones (États-Unis d'Amérique)

Approuvé par:
George Watters (États-Unis d'Amérique)

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Résumé:

Australia is adapting the risk assessment framework used in Area 48 to assess the risks involved in any redevelopment of a commercial krill (Euphausia superba) fishery in CCAMLR Divisions 58.4.1 and 58.4.2, off the coast of East Antarctica, and to evaluate whether the current management procedure has a high likelihood of achieving CCAMLR’s objectives in this region. This paper Read More
Soumis par:
Nat Kelly (Australia)

Approuvé par:
Dirk Welsford (Australia)

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Résumé:

There are some limits to the accurate counting of the total number of nests by ground survey at large scale breeding sites of penguins. To compensate for these shortcomings of the classical method, we tested the effectiveness of aerial photography for penguin monitoring at Cape Hallett. Images taken with a drone had a higher resolution than those taken by helicopter, and in the drone images, Read More
Soumis par:
Jeong-Hoon Kim (Corée, Rép. de)

Approuvé par:
Seok-Gwan Choi (Corée, Rép. de)

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Résumé:

During the 2017 Scheme of International Scientific Observation workshop (WS-SISO), the data collection requirements for krill observers were discussed, with recommendations tabled in the WS-SISO Convener’s Report (SC-CAMLR-XXXVI/08) for amendments to the krill e-logbook used by SISO observers. This paper summarizes the changes to the e-logbook for proposed introduction in the 2019 season.

Soumis par:
Isaac Forster (Secrétariat de la CCAMLR)

Approuvé par:
David Agnew (Secrétariat de la CCAMLR)

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Résumé:

Data of basic parameters of foraging behaviour (foraging trip duration, total foraging trip distance, and maximum distance from the colony) and of foraging range for Gentoo penguin and Chinstrap penguin studied in Byers Peninsula and Deception Island respectively are given.

Soumis par:
Andrés Barbosa (Espagne)

Approuvé par:
Belinda Blackburn (Secrétariat de la CCAMLR)

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Résumé:

Understanding of the dynamics of the Antarctic krill fishery and the krill population played an important role in the feed-back management of krill fishery. The CPUE data collected from the Chinese F/V Fu Rong Hai from 2012/13 to 2016/17 fishing seasons were used to describe the temporal and spatial dynamics of the population and the fishery of krill in CCAMLR Subarea 48.1. The Read More
Soumis par:
Yi-Ping Ying (Chine)

Approuvé par:
Xianyong Zhao (Chine)

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Résumé:

The spatial distribution and swarm characteristics of Antarctic krill were studied using the swarm-based method established in SG-ASAM-17. Acoustic data were collected from the FV Fu Rong Hai using Simrad EK60 echosounder (38/70/120 kHz) during four transect surveys conducted in December 2013, March 2015, January 2016 and February 2018 around South Shetland Islands. The swarm Read More
Soumis par:
Xiaotao Yu (Chine)

Approuvé par:
Xianyong Zhao (Chine)

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Résumé:

Results presented here contribute to the currently poor knowledge of fin whales (Balaenoptera physalus) in Southern Ocean, based on preliminary results regarding the distribution of the species around the northern Antarctic Peninsula. We show a broad view of the sightings based on data collected from 2013 to 2018 by the Brazilian Antarctic Program the Polar Vessel (NPo) Almirante Read More
Soumis par:
Elisa Seyboth

Approuvé par:
Benhur Peruch Viana (Brésil)

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Résumé:

This paper reports on available CEMP data and details of use as a guide for CEMP-related analyses, including an update on CEMP metadata available on the CCAMLR GIS and as hosted on the NASA Global Change Master Directory (GCMD). CEMP data submissions for the 2017/18 season are detailed by site and species, and a brief overview on general trends from the past three seasons by Subarea or Read More
Soumis par:
Emily Grilly

Approuvé par:
Belinda Blackburn (Secrétariat de la CCAMLR)

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Résumé:

Over time there has been a general decline in the collection of penguin diet composition data through the A8 parameter of the CEMP program, due to concerns surrounding the invasive nature of the methods. A pilot study was conducted at Esperanza Station for the 2017/18 season to consider opportunistic data collection methods as an alternate approach. Data on diet composition and krill length Read More
Soumis par:
Emily Grilly

Approuvé par:
Belinda Blackburn (Secrétariat de la CCAMLR)

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Résumé:

Updates to the CEMP data submission e-forms for parameters A3 and A8 have been proposed to allow for more detailed data collection fields on prey species type and krill length, and to ensure consistency in data collection methodology. Updating these e-forms will also require an update to the method descriptions for these parameters in the CEMP Standard Methods manual. Read More
Soumis par:
Emily Grilly

Approuvé par:
Belinda Blackburn (Secrétariat de la CCAMLR)

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Résumé:

We wish to draw the attention of Members to an online application of the R code published in the attached paper. The web-based app ‘photoR’ (https://jefferson.shinyapps.io/photor2) implements  the methods of the paper and provides summary outputs for direct input to CEMP A6b and A9 eforms. The abstract of the paper follows:

Read More
Soumis par:
Jefferson Hinke (États-Unis d'Amérique)

Approuvé par:
George Watters (États-Unis d'Amérique)

Publication:
Methods Ecol. Evol. (2018), doi: 10.1111/2041-210X.13015

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Résumé:

Climate change is a threat to marine ecosystems and the services they provide, and reducing fishing pressure is one option for mitigating the overall consequences for marine biota. We used a minimally realistic ecosystem model to examine how projected effects of ocean warming on the growth of Antarctic krill, Euphausia superba, might affect populations of krill and dependent predators Read More
Soumis par:
George Watters (États-Unis d'Amérique)

Approuvé par:
George Watters (États-Unis d'Amérique)

Publication:
PLoS ONE 13 (1) (2018): e0191011. https://doi.org/10.1371/journal.pone.0191011

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Résumé:

This report presents activities and preliminary results from a krill and ecosystem monitoring survey conducted in February 2018 at the South Orkney Islands.

Soumis par:
Bjørn Krafft (Norvège)

Approuvé par:
Odd Aksel Bergstad (Norvège)

Publication:
Rapport fra Havforskningen, 18 (2018), ISSN 1893-4536: www.hi.no/filarkiv/2018/05/krilltokt_2018_juvel_krafft_fv_3.pdf/nb-no

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Résumé:

A dominant Antarctic ecological paradigm suggests that winter sea ice is generally the main feeding ground for krill larvae. Observations from our winter cruise to the southwest Atlantic sector of the Southern Ocean contradict this view and present the first evidence that the pack-ice zone is a food-poor habitat for larval development. In contrast, the more open marginal ice zone provides a Read More
Soumis par:
So Kawaguchi (Australia)

Approuvé par:
Dirk Welsford (Australia)

Publication:
Nature Ecology & Evolution, 1 (2017): 1853–1861, doi:10.1038/s41559-017-0368-3

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Résumé:

Antarctic krill (Euphausia superba)—one of the most abundant animal species on Earth—exhibits a five to six year population cycle, with oscillations in biomass exceeding one order of magnitude. Previous studies have postulated that the krill cycle is induced by periodic climatological factors, but these postulated drivers neither show consistent agreement, nor are they supported by Read More
Soumis par:
So Kawaguchi (Australia)

Approuvé par:
Dirk Welsford (Australia)

Publication:
Nature Ecology & Evolution, 1 (2017): 0177, doi: 10.1038/s41559-017-0177

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Résumé:

Mid-trophic level organisms (MTLO) of open-ocean marine ecosystems play a key role linking primary and tertiary consumers. Despite their importance, characterisation of MTLO is limited due to sampling difficulty, and is largely obtained through active acoustics. Acoustic data collected from vessels of opportunity transiting across the Southern Ocean between New Zealand and the Ross Sea Read More
Soumis par:
Alistair Dunn (Nouvelle-Zélande)

Approuvé par:
Alistair Dunn (Nouvelle-Zélande)

Publication:
Mar. Ecol. Prog. Ser., 592 (2018): 19–35

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Résumé:

Data on the distribution and abundance of mid-trophic level organisms (MTLOs) in the pelagic open-ocean ecosystem are normally sparse or absent. Consequently, ecosystem models are limited in their ability to support decision-making for issues ranging from fisheries management to ecosystem resilience to climate change. We used acoustic data collected at 38 kHz frequency across the Southern Read More
Soumis par:
Alistair Dunn (Nouvelle-Zélande)

Approuvé par:
Alistair Dunn (Nouvelle-Zélande)

Publication:
Mar. Ecol. Prog. Ser., 592 (2018): 37–56

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Résumé:

Foreword to 14 papers in a themed issue ‘The marine system of the West Antarctic Peninsula: status and strategy for progress in a region of rapid change’.

Soumis par:
Philip Trathan

Approuvé par:
Kylie Bamford (Royaume-Uni)

Publication:
Phil. Trans. R. Soc. A, 376 (2018): 20170179, http://dx.doi.org/10.1098/rsta.2017.0179

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Résumé:

Leopard seals are an important Antarctic apex predator that can affect marine ecosystems through local predation. Here we report on the successful use of micro geolocation logging sensor tags to track the movements, and activity, of four leopard seals for trips of between 142-446 days including one individual in two separate years.  Whilst the sample size is small the results represent an Read More
Soumis par:
Philip Trathan

Approuvé par:
Kylie Bamford (Royaume-Uni)

Publication:
PLoS ONE, (2018), https://doi.org/10.1371/journal.pone.0197767

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Résumé:

The Southern Ocean is fundamentally important to the Earth system, influencing global climate, biogeochemical and ecological cycles. Limited observations suggest the Southern Ocean is changing, yet chronic under-sampling makes the causes and consequences of such changes difficult to assess, and limits the effectiveness of any response. A Southern Ocean Observing System (SOOS) is thus being Read More
Soumis par:
Philip Trathan

Approuvé par:
Kylie Bamford (Royaume-Uni)

Publication:
Curr. Opin. Env. Sust., 5 (2013): 306–313

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Résumé:

The present document is an update of document EMM-16/52, presenting refine analysis of the krill fishing hotspots and a description of the daily CPUE pattern for the krill fishery. This paper has now been accepted for publication in Fisheries Research.

Results identified several fishing hotspots (FHs), where the fleet took 48 to 57% of the seasonal catch, and are relatively Read More
Soumis par:
César Cárdenas (Chili)

Approuvé par:
Admin Admin (Secrétariat de la CCAMLR)

Publication:
Fish. Res., 2018 (in press)

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Résumé:

In order to understand and mitigate for the potential impacts of anthropogenic disturbance on marine predators it is fundamental to gain insight into the drivers behind the temporal variation in their current distribution. With this in mind, we used Platform Terminal Transmitter (PTT) devices to track Adélie and chinstrap penguins breeding on the South Orkney Islands during the pre-moult phase Read More
Soumis par:
Philip Trathan

Approuvé par:
Chris Darby

Publication:
Polar Biol. (submitted)

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Résumé:

We aim to investigate the qualitative changes in the habitats of two most common species penguin populations in the Wilhelm Archipelago Pygoscelis papua (gentoo) and Pygoscelis adeliae (Adelie) penguins in the CCAMLR Subarea 48.1 under the impact of climate changes and krill fishery. To minimize the effect of human disturbance on the breeding success Read More
Soumis par:
Leonid Pshenichnov (Ukraine)

Approuvé par:
Kostiantyn Demianenko (Ukraine)

Publication:
Ukrainian Antarctic Journal, 16 (2018)

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Résumé:

There is increasing interest in using higher-trophic level predators as ecosystem indicators because their performance is presumed to be linked to the overall function of the ecosystem that supports them. In the southwest Atlantic sector of the Southern Ocean, Antarctic krill (Euphausia superba) supports huge predator populations as well as a growing commercial fishery.  To Read More
Soumis par:
Andrew Lowther (Norvège)

Approuvé par:
Odd Aksel Bergstad (Norvège)

Publication:
ICES J. Mar. Sci. (accepted)

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Résumé:

The abundance of the Antarctic krill (Euphausia superba) has been declining in the western Antarctic Peninsula (WAP), probably as a consequence of the effects of the considerable increase in the sea surface temperature observed in the region. Thus, the performance (reproduction and survival) of the krill consumers may be compromised. In the present study, we investigated the Read More
Soumis par:
Elisa Seyboth

Approuvé par:
Benhur Peruch Viana (Brésil)

Publication:
Nature Climate Change, 2018 (submitted)

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Résumé:

Age information for commercial fish species is crucial to fishery management. Age information for Antarctic krill (Euphausia superba) will be important for stock assessment modeling and future feedback management of krill fisheries. Samples stored in 70% ethanol provide an opportunity to detect the growth bands of eyestalk sections. Moreover, information derived from samples preserved Read More
Soumis par:
Guoping Zhu (Chine)

Approuvé par:
Xianyong Zhao (Chine)

Publication:
Fish. Res., 197 (2018): 1–6, http://dx.doi.org/10.1016/j.fishres.2017.09.020

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Résumé:

Understanding the energy flux through food webs is important for estimating the capacity of marine ecosystems to support stocks of living resources. This paper provides a summary of a review on currently available Southern Ocean energetic density data. This review is a result of the Southern Ocean Diet and Energetics Database, an initiative of the SCAR Expert on Group Birds and Marine Mammals Read More
Soumis par:
Fokje Schaafsma (Pays-Bas, Royaume des)

Approuvé par:
Doro Forck (Secrétariat de la CCAMLR)

Publication:
Marine Biology (under review)

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Résumé:

Antarctic krill Euphausia superba is an ecological key species in the Southern Ocean and a major fisheries resource. The winter survival of age class 0 (AC0) krill is susceptible to changes in the sea-ice environment due to their association with sea ice and their need to feed during their first winter. However, our understanding of their overwintering diet and its variability is Read More
Soumis par:
Fokje Schaafsma (Pays-Bas, Royaume des)

Approuvé par:
Doro Forck (Secrétariat de la CCAMLR)

Publication:
Mar. Ecol. Prog. Ser., 580 (2017): 101–115

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Résumé:

• The Antarctic region is characterized by complex interaction of natural climate variability and anthropogenic climate change that produce high levels of variability in both physical and biological systems, including impacts on key fishery taxa such as Antarctic krill.

• The impact of anthropogenic climate change in the short-term could be expected to be related to changes in sea ice Read More
Soumis par:
Keith Reid

Approuvé par:
Belinda Blackburn (Secrétariat de la CCAMLR)

Publication:
Impacts of climate change on fisheries and aquaculture Synthesis of current knowledge, adaptation and mitigation options, FAO Fisheries and Aquaculture Technical Paper No. 627 (2018)

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Résumé:

This paper presents a ‘first-step’ proposal for CCAMLR to consider the effects of environmental variability and change on management advice from toothfish assessments. We focus on changes to environmental conditions that are maintained over a number of years, which includes the effects of global climate change. The effects of environmental variability and change on toothfish population Read More
Soumis par:
Alistair Dunn (Nouvelle-Zélande)

Approuvé par:
Alistair Dunn (Nouvelle-Zélande)

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Résumé:

Recognising that CM 51-07 is scheduled to lapse at the end of the 2020/2021 fishing season, we outline a plan of work to engage with the CCAMLR community to move towards refining the krill risk assessment framework. WG-EMM has previously offered advice about how the risk assessment might be improved for the future. We therefore indicate key areas for community engagement to help develop the Read More
Soumis par:
Philip Trathan

Approuvé par:
Kylie Bamford (Royaume-Uni)

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Résumé:

We review reasons why the fishery for Antarctic krill is challenging to manage and consider ways in which management could be improved, whilst responsible and precautionary harvesting continues. We propose an experimental framework to help improve the scientific basis for management. This framework will enhance conservation, and increase ecological understanding by using an experimental Read More
Soumis par:
Philip Trathan

Approuvé par:
Kylie Bamford (Royaume-Uni)

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Résumé:

In this paper we drawn comparison between the existing CCAMLR Ecosystem Monitoring Programme (CEMP) and plans to develop Research and Monitoring Plans for Marine Protected Areas. We recall the outcomes of the CEMP Review in 2003, and as a result highlight the intensity of monitoring required to detect change and to ascribe cause. We therefore propose that CCAMLR build even stronger links with Read More
Soumis par:
Philip Trathan

Approuvé par:
Kylie Bamford (Royaume-Uni)

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