WG-EMM-2023

Établir des critères d'évaluation de l'efficacité des aires marines protégées (AMP) de la CCAMLR peut permettre la résolution de problèmes qui empêchent actuellement de parvenir à un consensus sur l'établissement d'AMP en Antarctique de l'Est, dans la mer de Weddell et dans le domaine de planification 1. Les critères SMART expriment les résultats souhaités en matière d'indicateurs Read More
Soumis par:
George Watters (États-Unis d'Amérique)

Approuvé par:
Elizabeth Phelps

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This document presents 46 candidate SMART (specific, measurable, achievable, relevant and time-bound) criteria for assessing the effectiveness of the Ross Sea region Marine Protected Area (RSRMPA). Each criterion links to a specific objective from CM 91-05 paragraph 3, a generic objective Read More
Soumis par:
George Watters (États-Unis d'Amérique)

Approuvé par:
Elizabeth Phelps

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Environmental monitoring along 5 set transect lines off South Orkney Islands in the Southern Ocean have been carried out annually (since 2011) by the Institute of Marine Research, Norway. Data are used to calculate biomass of Antarctic krill (Euphausia superba) as well as mapping distribution and demographic Read More
Soumis par:
Bjørn Krafft (Norvège)

Approuvé par:
Bjørn Krafft (Norvège)

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To examine the movement of Antarctic krill (Euphausia superba), between and within key regions of the Southern Ocean including within Area 48, we are modeling Lagrangian drifters to simulate transport pathways during early life stages. The simulated drifters are embedded within a 5-km horizontal resolution ocean/sea ice/ice shelf Read More
Soumis par:
George Watters (États-Unis d'Amérique)

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

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This document summarizes the current and ongoing development of the revised approach to the management of the Antarctic krill fishery. The revised approach was adopted by CCAMLR in 2019 and integrates three components, namely regular updates of biomass estimates, a population projection model to estimate precautionary harvest rates, and a krill-predator spatial overlap analysis to determine Read More
Soumis par:
Stephane Thanassekos (Secrétariat de la CCAMLR)

Approuvé par:
David Agnew (Secrétariat de la CCAMLR)

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The fish community of the Scotia Sea is diverse and plays key roles in Antarctic food webs and biogeochemical cycling. However, knowledge of the spatial and community structure of larval and juvenile fish is limited, particularly in the region surrounding the South Orkney Islands. Here we examine the structure of the 0-group (aged <1 year) fish community using data from a Read More
Soumis par:
Tracey Dornan (Royaume-Uni)

Approuvé par:
Martin Collins (Royaume-Uni)

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As an essential part of the krill fishery management imposed by CCAMLR, fishery observers are regularly deployed onboard commercial fishing vessels to monitor the fishing operations. One of their tasks is to take regular samples of the caught krill to record length-frequency distributions and stage composition. These data provide Read More
Soumis par:
Bettina Meyer (Allemagne)

Approuvé par:
Bettina Meyer (Allemagne)

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The SCAR Krill Expert Group (SKEG) aims to improve the understanding of krill biology and ecology and serve as a link between the scientific krill community and the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR), which manages the Antarctic krill fishery. SKEG also provides a Read More
Soumis par:
Bettina Meyer (Allemagne)

Approuvé par:
Bettina Meyer (Allemagne)

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In 2016 the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) adopted Conservation Measure (CM) 91-05, establishing the Ross Sea region Marine Protected Area (RSrMPA). This paper summarises the research and monitoring activities for New Zealand that are relevant to the RSrMPA, as required by CM 91-05 paragraph 16(i)–(ii).

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Soumis par:
Nathan Walker (Nouvelle-Zélande)

Approuvé par:
Nathan Walker (Nouvelle-Zélande)

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A deepwater skate egg case nursery is defined in a discrete location at ~460 m off Cape Adare in the Southern Ocean after observations were recorded from a deepwater video imaging system. The morphology and size of the egg cases were consistent with the genus Bathyraja, and most likely belong to the species, Bathyraja sp. (cf. eatonii Read More
Soumis par:
Nathan Walker (Nouvelle-Zélande)

Approuvé par:
Nathan Walker (Nouvelle-Zélande)

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This paper provides a summary of the New Zealand research voyage to the Ross Sea region in January-February 2023 on RV Tangaroa (voyage code TAN2302). The over-arching purpose of this multi-disciplinary research voyage was to increase knowledge about key environmental and biological processes in the Ross Sea region of the Southern Ocean, and thereby improve Read More
Soumis par:
Nathan Walker (Nouvelle-Zélande)

Approuvé par:
Nathan Walker (Nouvelle-Zélande)

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In 2016, the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) adopted what was then the world’s largest marine protected area (MPA), the Ross Sea region marine protected area (RSrMPA). One fishery currently operates in the Ross Sea region (RSr) and targets Antarctic toothfish (Dissostichus mawsoni), which has an ontogenically-segregated life- Read More
Soumis par:
Nathan Walker (Nouvelle-Zélande)

Approuvé par:
Nathan Walker (Nouvelle-Zélande)

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In this paper, continuing the topic of gear selectivity in relation to krill, the authors discuss the issues of collecting biometric information, paying attention to the specifics of biometrics from krill biology and the impact of krill biometrics on gear selectivity in the context of its scientific and practical significance for current CCAMLR topics Read More
Soumis par:
Svetlana Kasatkina (Fédération de Russie)

Approuvé par:
Svetlana Kasatkina (Fédération de Russie)

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The multidisciplinary investigations accompanied with acoustic, trawl and oceanographic sampling, regular at-sea observations on marine birds and mammals carried out by the RV Atlantida in 2020 in the Antarctic Peninsula Subarea (48.1) casts doubt on the hypothesis of the impact of fishing on krill resource as well as on dependent predators via the tropic chains in the context of Read More
Soumis par:
Svetlana Kasatkina (Fédération de Russie)

Approuvé par:
Svetlana Kasatkina (Fédération de Russie)

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We present a preliminary analysis of data from the krill fishery and sea ice  in traditional fishing grounds in Subareas 48.1 and 48.2, where the current fishery achieves the bulk of the krill catch over the period 1997-2022.  The complex inter-annual and seasonal dynamics of ice conditions were discussed  in context  of developing management schemes for the krill fishery, Read More
Soumis par:
Svetlana Kasatkina (Fédération de Russie)

Approuvé par:
Svetlana Kasatkina (Fédération de Russie)

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CCAMLR monitors marine debris in the Convention Area through the Marine Debris Monitoring Program (MDMP) established in 1986. The MDMP compiles data from surveys and opportunistic sightings conducted by Members, fishing gear reported by CCAMLR Scheme of International Scientific Observation (SISO) observers as lost by fishing vessels, and marine debris ( Read More
Soumis par:
Claire Van Werven (Secrétariat de la CCAMLR)

Approuvé par:
Todd Dubois (Secrétariat de la CCAMLR)

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The mesozooplankton community in the Ross Sea region marine protected area (RSR MPA) was investigated to explain the community Read More
Soumis par:
Hyoung Sul La (Corée, Rép. de)

Approuvé par:
Jeongseok Park (Corée, Rép. de)

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The Expert Workshop on Pelagic Spatial Planning for the Eastern Sub-Antarctic Region (CCAMLR MPA Planning Areas 4, 5, and 6) held in Cape Town in 2019 aimed to develop a scientific work program for the regionalization of abiotic and biotic pelagic zones. The workshop emphasized the importance of plankton, mesopelagic fish, and top predators in understanding the sub-Antarctic Read More
Soumis par:
Philippe Koubbi (France)

Approuvé par:
Marc Eléaume (France)

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The TAAF are located at the junction of the South Indian Ocean and the Southern Ocean, an area of great environmental contrasts due to the meeting of subtropical warm and salty waters and polar cold waters. Frontal structures generated by the Antarctic Circumpolar Current divide these oceans into several frontal zones. Read More
Soumis par:
Philippe Koubbi (France)

Approuvé par:
Marc Eléaume (France)

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Physical regionalisations have been previously performed at the global scale to define biogeochemical provinces from surface data or in the mesopelagic zone. However, these regionalisations often lack finer-scale separations as they do not always consider regional patterns such as island effects or physically dynamic zones. Our Read More
Soumis par:
Philippe Koubbi (France)

Approuvé par:
Marc Eléaume (France)

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This abstract presents some new results on mesopelagic fish populations from surveys from Crozet to Kerguelen and in the subtropical Indian Ocean. The mesopelagic fauna plays a crucial role in the marine ecosystem trophic web. The study integrates both the subtropical and Southern Ocean species. The surveys from 2017 to 2019 revealed the presence of 141 species, with Read More
Soumis par:
Philippe Koubbi (France)

Approuvé par:
Marc Eléaume (France)

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The recent Biogeographic Atlas of the Southern Ocean (De Broyer et al., 2014) synthesises knowledge of this ocean's biodiversity from historical explorations to now. It includes a tremendous amount of data from the International Polar Year (2007-2009) and the Census of Antarctic Marine Life - CAML (2005-2010). CAML did not focus on the subantarctic zone. The results of the Read More
Soumis par:
Philippe Koubbi (France)

Approuvé par:
Marc Eléaume (France)

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Euphausia superba (Antarctic krill) is a key component of the South Georgia (SG) ecosystem, supporting important populations of higher predators including seabirds, seals and whales. It is also the focus of a commercial fishery, which operates exclusively during winter. However, little is currently known about the distribution or abundance of krill or krill predators Read More
Soumis par:
Martin Collins (Royaume-Uni)

Approuvé par:
Martin Collins (Royaume-Uni)

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Following the recommendation by WG-FSA-2022 (paragraph 8.26) to provide an analysis of SISO observer sampling rates in the krill fishery to WG-EMM-2023, this document presents an analysis of sampling rates for each vessel that fished for krill in the last five completed seasons (2018–2022). Current sampling rates requirements are given to aid in the interpretation Read More
Soumis par:
Stephane Thanassekos (Secrétariat de la CCAMLR)

Approuvé par:
Todd Dubois (Secrétariat de la CCAMLR)

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The CCAMLR Ecosystem Monitoring Program (CEMP) is a circumpolar research effort designed to detect changes in predator populations and distinguish between changes attributable to fisheries and those due to environmental variation. This report provides an updated summary of the CCAMLR Ecosystem Monitoring Program (CEMP) data submissions through the 2022/23 Read More
Soumis par:
Claire Van Werven (Secrétariat de la CCAMLR)

Approuvé par:
Todd Dubois (Secrétariat de la CCAMLR)

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Working group papers WG-EMM-2022/15 and WG-FSA-2022/02 were presented at last year's EMM and FSA meetings. The papers gave detailed information regarding the discovery of a nest area for notothenioid icefish (Neopagetopsis ionah, Nybelin 1947) of an unprecedented extent that had been observed Read More
Soumis par:
Katharina Teschke (Allemagne)

Approuvé par:
Bettina Meyer (Allemagne)

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• This paper provides an overview of CCAMLR-related ecosystem monitoring and scientific activities undertaken by the British Antarctic Survey (BAS) during the period April 2022 to March 2023.
• BAS research is focussed on the Scotia Sea region (Area 48) and the 2022/23 season saw very low sea ice (record low in austral summer Read More
  Soumis par:
  Martin Collins (Royaume-Uni)
  
  Approuvé par:
  Martin Collins (Royaume-Uni)
  
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On June 5 and 6 2023, a total of 19 new chilean scientific observers were trained on the conservation measures implemented by CCAMLR to manage fisheries in the Southern Ocean. Topics covered included CCAMLR’s objectives, SISO procedures, and a range of conservation measures related to compliance, Read More
Soumis par:
Francisco Santa Cruz (Chili)

Approuvé par:
César Cárdenas (Chili)

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In western Antarctic Peninsula (WAP), one of the polar areas most affected by global warming, Adelie (Pygoscelis adelie) and Chinstrap ( Read More
Soumis par:
Alvaro Soutullo (Uruguay)

Approuvé par:
Yamandú Marín (Uruguay)

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Antarctic fur seals (Arctocephalus gazella) are an iconic marine mammal, an important component of Antarctic ecosystems, and a key indicator species for regional fisheries management. Recent studies have demonstrated A. gazella is composed of at least four distinct subpopulations, including one in the South Shetland Islands. These South Read More
Soumis par:
Douglas Krause (États-Unis d'Amérique)

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

Publication:
Submitted for publication, currently in review at Mammal Review

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The Expert Workshop on Pelagic Spatial Planning for the eastern Sub-Antarctic Region (CCAMLR MPA Planning Areas 4, 5 and 6) took place in Cape Town, South Africa, from 26 to 30 August 2019 (Makhado et al., 2019). The workshop aimed to develop a scientific work programme that will lead to abiotic and biotic pelagic regionalisation using geographic, biological Read More
Soumis par:
Azwianewi Makhado (Afrique du Sud)

Approuvé par:
Azwianewi Makhado (Afrique du Sud)

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Numerous seabird and marine mammal species occur in the subtropical and subantarctic zones of the southern Indian Ocean region. They breed, moult and rest at French, South African and Australian islands in the region and forage at sea in the Exclusive Economic Zones of these nations, the Convention Area, and Areas Beyond National Jurisdiction. Read More
Soumis par:
Azwianewi Makhado (Afrique du Sud)

Approuvé par:
Azwianewi Makhado (Afrique du Sud)

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In fulfillment of the duties assumed by Ukraine at the XXXVI session of the CCAMLR in 2017, Ukrainian observers, in addition to their main tasks, also carried out some oceanographic works that were possible on fishing vessels without special scientific equipment. Part of results of the works was presented in WG-SAM-18 Read More
Soumis par:
Kostiantyn Demianenko (Ukraine)

Approuvé par:
Kostiantyn Demianenko (Ukraine)

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Antarctic krill (Euphausia superba) is a key species within the Southern Ocean ecosystem and also the target of its largest commercial fishery. Statistical models that correlate krill biomass to environmental covariates can help understand the drivers of krill distribution, an important factor Read More
Soumis par:
Simeon Hill (Royaume-Uni)

Approuvé par:
Martin Collins (Royaume-Uni)

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The central stock assessment tool for the Antarctic Krill fishery is a single-species model developed in 1996 named the Generalized Yield Model (GYM). This model mainly uses the proportion of recruits and their growth parameters to project fluctuations of the krill abundance under different levels of fishing pressure, Read More
Soumis par:
Elling Deehr Johannessen (Norvège)

Approuvé par:
Bjørn Krafft (Norvège)

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Understanding the factors driving seabirds’ spatial and temporal distribution is important to infer the likely impact of a changing climate. At sea observational data onboard the vessels can provide such an insight into the distribution of this species. Preliminary results associated sightings with Read More
Soumis par:
Azwianewi Makhado (Afrique du Sud)

Approuvé par:
Azwianewi Makhado (Afrique du Sud)

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The Prince Edward Islands (PEIs) in the sub-Antarctic Indian Ocean bioregion provide crucial breeding habitat for large populations of seabirds and marine mammals and were declared a Marine Protected Area in 2013. The distribution of plankton in this region is one of the essential components being investigated to support ecoregionalisation of the sub-Antarctic region, a prerequisite Read More
Soumis par:
Azwianewi Makhado (Afrique du Sud)

Approuvé par:
Azwianewi Makhado (Afrique du Sud)

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One approach for understanding the dynamics of krill populations in the Antarctic Peninsula is through the analysis of empirical data, such as size composition obtained from fishery monitoring. By studying this data over multiple years and considering life history parameters, we can assess the intrinsic productivity of krill and potential changes over time and in different areas. To achieve Read More
Soumis par:
Mauricio Mardones (Chili)

Approuvé par:
César Cárdenas (Chili)

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Modern biologging technology (Global Positioning System [GPS], accelerometer, time-depth recorders [TDR], animal-borne cameras, etc.) coupled with advances in analytical techniques (e.g., convolutional neural networks) and increased computing power provide an opportunity to improve estimates of functional responses of marine predators to changes in their prey field. Read More
Soumis par:
Chris Oosthuizen

Approuvé par:
Azwianewi Makhado (Afrique du Sud)

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Chinstrap penguin (Pygoscelis antarctica) populations have declined at monitored sites in the Western Antarctic Peninsula since (at least) the 1980s. Recent efforts, such as the Mapping Application for Penguin Populations and Projected Dynamics (MAPPPD) have increased and improved the availability of data on penguin abundance, including chinstrap penguin population Read More
Soumis par:
Chris Oosthuizen

Approuvé par:
Azwianewi Makhado (Afrique du Sud)

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The CCAMLR Ecosystem Monitoring Program (CEMP) was established in 1985 to detect and record significant changes in critical components of the marine ecosystem in the CCAMLR area. It uses standard methodologies to monitor a range of land-based marine predators. CEMP has remained largely unchanged since its inception, but with the increase in krill catch and spatial Read More
Soumis par:
Martin Collins (Royaume-Uni)

Approuvé par:
Martin Collins (Royaume-Uni)

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Antarctic seabirds are important indicator species for CCAMLR's ecosystem monitoring program (CEMP) to identify and assess impacts and change in Southern Ocean ecosystems and to manage the krill fishery taking account of the needs of krill-consuming predators. Previously, focus for the use of remotely-operating time-lapse cameras as a tool for cost-effective Read More
Soumis par:
Louise Emmerson (Australia)

Approuvé par:
Philippe Ziegler (Australia)

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The recent surveys in Division 58.4.1 in 2018/19 by Japan (Murase et al., 2019) and in the eastern sector of Division 58.4.2 in 2021 by Australia (Cox et al., 2022) provide necessary data set for updating precautionary catch allocations in these Divisions.

Similar to the process undertaken in 2021 for Subarea 48.1, here we Read More
Soumis par:
So Kawaguchi (Australia)

Approuvé par:
Philippe Ziegler (Australia)

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Antarctic seabirds are important indicator species for CCAMLR’s ecosystem monitoring program (CEMP) to identify and assess impacts and change in Southern Ocean ecosystems, and to ensure a sustainable krill fishery taking account the needs of krill-dependent predators. Previously, we reported on developments in seabird monitoring approaches (e.g. remote- Read More
Soumis par:
Louise Emmerson (Australia)

Approuvé par:
Philippe Ziegler (Australia)

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CCAMLR has taken on an important role in the world oceans conservation planning and has agreed to develop a representative Read More
Soumis par:
Marc Eléaume (France)

Approuvé par:
Marc Eléaume (France)

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This document details the scientific evidence to support the conservation objectives of the draft Conservation Measure for a Weddell Sea Marine Protected Area Phase 2

The openMSE open-source project offers a framework and tools for performing Management Strategy Evaluation (MSE) and has been used for dozens of species. Antarctic krill management is currently informed from the Generalized Yield Model, and its implementation in the Grym R package. Here we develop the parameterisations and modifications required to approximate Read More
Soumis par:
Elling Deehr Johannessen (Norvège)

Approuvé par:
Bjørn Krafft (Norvège)

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This document outlines the results of the first to fourth (2019/2020–2022/2023) dedicated sighting surveys under the Japanese Abundance and Stock structure Surveys in the Antarctic (JASS-A program). The main research objectives of JASS-A are i) the study of the abundance and abundance trends of large whale species, and ii) the study of the distribution, movement and stock structure of large Read More
Soumis par:
Tatsuya ISODA (Japon)

Approuvé par:
Takehiro Okuda (Japon)

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Understanding of krill population structure and distribution patterns is critical for effective conservation and management, especially it is urgent need to reveal the relationships among geographical ‘populations’ of Antarctic krill in the Area 48 and its subareas, Read More
Soumis par:
Yi-Ping Ying (Chine)

Approuvé par:
Xianyong Zhao (Chine)

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Acoustic data greatly improves spatial resolution in determining marine ecosystem structures, biodiversity assessments, trophic level interactions and identification of ecosystem functional groups within the Ocean down to species level. Acoustic data can prove qualitative and Read More
Soumis par:
Azwianewi Makhado (Afrique du Sud)

Approuvé par:
Azwianewi Makhado (Afrique du Sud)

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Nests of the icefish Chionodraco hamatus were documented for the first time at about 500 m depth at Terra Nova Bay (Victoria Land, western Ross Sea), in an area included in the Antarctic Specially Protected Area (ASPA) No. 173 in a portion of the General Protection Zone of the largest marine protected area of the world established, the Ross Sea Region Marine Protected Area (RSRMPA). Read More
Soumis par:
Erica Carlig (Italie)

Approuvé par:
Helene Attrill

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We present a summary of the euphausiid larvae collected during the summer seasons of 2019 and 2020 in waters off the West Antarctic Peninsula (Mar de la Flota/Bransfield Strait) and Elephant Island surroundings. During 2019 E. superba and Thysanoessa macrura abundances were very high, while during 2020 all euphausiid larvae had very low densities. Read More
Soumis par:
Emilce Florencia Rombolá (Argentina)

Approuvé par:
Helene Attrill

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This paper provides a summarised history of the development of CCAMLR’s management of the Antarctic krill fishery, including recent developments towards a revised management approach. The revised krill management approach combines three components: periodic krill biomass estimates, estimation of precautionary harvest rates, and a ’spatial overlap analysis’, which incorporates the Read More
Soumis par:
Nat Kelly (Australia)

Approuvé par:
Philippe Ziegler (Australia)

Publication:
Paper SC/69A/EM/03, presented to the Scientific Committee of the International Whaling Commission (SC69A), Bled, Slovenia, April 2023

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The wind and solar powered Sailbuoy unmanned surface vehicle was used to survey Antarctic Krill abundance during two missions in the Southern Ocean. The 2021 mission to cover transects off the South Orkney islands to obtain a classical biomass estimate was hampered by collisions with sea ice and limited navigational precision. The 2023 mission to monitor prey on a krill Read More
Soumis par:
Bjørn Krafft (Norvège)

Approuvé par:
Bjørn Krafft (Norvège)

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This paper provides a summary description and analysis of the activities the Chilean fishing ship Antarctic Endeavour carried out in the Antarctic krill (Euphausia superba) fishery to produce krill meal between January and July 2022. The effort, catch, CPUE, and length-frequency distributions of captured krill are recorded per trip and subarea. Also, trip-by-trip bycatch data from Read More
Soumis par:
Francisco Santa Cruz (Chili)

Approuvé par:
César Cárdenas (Chili)

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A significant portion of mid-trophic level organisms, including micronekton and macrozooplankton, inhabit the (meso-)pelagic zone (0-1000 m). These organisms play a crucial role in the marine ecosystem and the cycling of biochemical compounds. However, uncertainties remain regarding their global biomass, diversity and spatiotemporal distribution. Previous research has shown that backscatter Read More
Soumis par:
Philippe Koubbi (France)

Approuvé par:
Philippe Koubbi (France)

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The Southern Ocean Continuous Plankton Recorder (SO-CPR) program represents a 30+ years long dataset that can be used to map the distribution of Southern Ocean zooplankton. For the needs of this project, namely the ecoregionalisation of ‘High Seas’ regions of the subantarctic to complement protected regions under national jurisdictions (MPAs), we have focussed on links between zooplankton prey Read More
Soumis par:
Philippe Ziegler (Australia)

Approuvé par:
Philippe Ziegler (Australia)

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This paper is the result of discussions during the EMM meeting held in 2015 (CCAMLR EMM report 2015, para 2.13-2.16). To calculate krill-catch (green weight) reported from the commercial fishery, current methods are based on data from codend volume, holding tank volume, data from flow meters, flow scales and meal conversions. To determine where the catch originates with high Read More
Soumis par:
Bjørn Krafft (Norvège)

Approuvé par:
Bjørn Krafft (Norvège)

Publication:
Fish. Manag. Ecol., 30 (3) (2023): 323–331, doi: 10.1111/fme.12625

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Antarctic krill is a key species in the Southern Ocean and subject to the most extensive fishery in the Antarctic. The Norwegian Institute of Marine Research has conducted acoustic-trawl monitoring of krill off the South Orkneys annually since 2011 in collaboration with the krill fishing industry. Average krill Read More
Soumis par:
Bjørn Krafft (Norvège)

Approuvé par:
Bjørn Krafft (Norvège)

Publication:
ICES J. Mar. Sci., 0 (2023): 1–15, doi: 10.1093/icesjms/fsad076

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The Ross Sea region Marine Protected Area (RSRMPA) encompasses one of the healthiest marine ecosystems remaining on this planet, but one that is under increasing alteration from ongoing climate change and fishing pressure. The RSRMPA is among the world’s largest MPAs, and the biggest and most comprehensive in multi-national waters. However, an RSRMPA workshop held in April 2021 identified Read More
Soumis par:
George Watters (États-Unis d'Amérique)

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

Publication:
Published 2022, http://www.rosssearesearch.org/

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We investigated the seasonal and spatial occurrence of sperm whale (Physeter macrocephalus) in the Ross Sea region of the Southern Ocean derived from passive acoustic data. Two Autonomous Multichannel Acoustic Recorders (AMARs) moored about 10m above the seabed were deployed in the austral summer of 2018 and recovered 1 year later. The northern AMAR (A3) was located on the Pacific-Antarctic Read More
Soumis par:
Nathan Walker (Nouvelle-Zélande)

Approuvé par:
Nathan Walker (Nouvelle-Zélande)

Publication:
Front. Remote Sens., 4 (2023), doi: 10.3389/frsen.2023.940627

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Data on marine biota exist in many formats and sources, such as published literature, data repositories,
and unpublished material. Due to this heterogeneity, information is difficult to find, access and
combine, severely impeding its reuse for further scientific analysis and its long-term availability
for future generations. To address this challenge, we present CRITTERBASE, Read More
Soumis par:
Katharina Teschke (Allemagne)

Approuvé par:
Bettina Meyer (Allemagne)

Publication:
Scientific Data, 9:483, https://doi.org/10.1038/s41597-022-01590-1

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The bulk of the chinstrap penguin (Pygoscelis antarcticus) global population inhabits the Antarctic Peninsula and Scotia Sea, which is a region undergoing rapid environmental changes. Consequently, regional level decreases for this species are widespread. This study aimed to evaluate
the level of breeding colony changes in the Antarctic Peninsula and South Orkney Islands, which, roughly Read More
Soumis par:
Francisco Santa Cruz (Chili)

Approuvé par:
César Cárdenas (Chili)

Publication:
Diversity, 15 (3) (2023): 327; doi: 10.3390/d15030327

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Dramatic decreases of chinstrap penguin populations across the Antarctic Peninsula (AP) are thought to be influenced by climate-driven changes affecting its main prey, the Antarctic krill, however, empirical evidence supporting such hypotheses are scarce. By coupling data on breeding chinstrap penguins, environmental remote sensing and estimates of krill acoustic density, we were able to Read More
Soumis par:
Francisco Santa Cruz (Chili)

Approuvé par:
César Cárdenas (Chili)

Publication:
Scientific Reports, 13 (2023): 5265, doi: 10.1038/s41598-023-32352-7

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To monitor and conserve a species, it is crucial to understand the size and distribution of populations. For seabirds, population surveys are usually conducted at peak breeding attendance. One of the largest populations of Cape petrels in East Antarctica is at the Vestfold Islands, where environmental and logistical constraints often prevent access to breeding sites at the optimal time for Read More
Soumis par:
Louise Emmerson (Australia)

Approuvé par:
Philippe Ziegler (Australia)

Publication:
Royal Society Open Science, 9 (2022): 211659, doi: 10.1098/rsos.211659

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The influence of resource limitation on spatio-temporal population dynamics is a fundamental theme in ecology and the concepts of carrying capacity, density dependence and population synchrony are central to this theme. The life history characteristics of seabirds, which include use of disjunct patches of breeding habitat, high coloniality during breeding, strong philopatry, and central-place Read More
Soumis par:
Louise Emmerson (Australia)

Approuvé par:
Philippe Ziegler (Australia)

Publication:
Oecologia, 196 (2021): 693–705, doi: 10.1007/s00442-021-04958-z

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Preliminary results from an integrated Casal2 assessment of Antarctic krill around the northern Antarctic Peninsula (in the area historically surveyed by the U.S. AMLR Program) and covering the years 1976-2021 are reported here. The assessment includes a 20-year forward projection. Data supplied to the model were fishery catches (1976-2021), acoustic biomass surveys (1996- Read More
Soumis par:
Doug Kinzey (États-Unis d'Amérique)

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

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