WS-CC-2023

This paper provides an overview of a new research project to evaluate climate change risks to toothfish in subareas 48.3 and 48.4. The CCAMLR Convention Area is one of the world’s most rapidly changing oceanic regions, with major impacts both observed and expected on marine ecosystems due to climate change and consequences for the conservation and management of marine living Read More
Soumis par:
Martin Collins (Royaume-Uni)

Approuvé par:
Martin Collins (Royaume-Uni)

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To help build resilience of fisheries and ecosystems in the face of climate change, the Australian Fisheries Management Authority, Commonwealth Scientific and Industrial Research Organisation (CSIRO) and the University of Tasmania have developed an adaptation planning handbook. This handbook is designed to guide fisheries managers, scientists and industry through a risk Read More
Soumis par:
Philippe Ziegler (Australia)

Approuvé par:
Philippe Ziegler (Australia)

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In face of the fast climate changes occurring in the Antarctic Peninsula, inclusion of climate change scenarios within the process of designation of Marine Protected Areas and krill fishing management is important. We conducted an exploratory analysis to evaluate changes of sea surface temperature and sea ice within the proposed Domain 1 Read More
Soumis par:
Lucas Krüger (Chili)

Approuvé par:
César Cárdenas (Chili)

Publication:
Not Published

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Climate change can impact fish stocks through different processes with two main impacts for a given stock: the migration of the stock and the decrease of its biomass. In the case of Patagonian toothfish, it seems unlikely that migration will occur due to the Read More
Soumis par:
Clara Azarian

Approuvé par:
Marc Eléaume (France)

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This paper briefly summarises recent (2015-present) climate change discussions within CCAMLR’s Scientific Committee, including some of the issues raised, approaches suggested and outcomes, to provide background information for the Workshop on Climate Change (WS-CC-2023). This summary does not intend to capture all climate change Read More
Soumis par:
Enrique Pardo (Nouvelle-Zélande)

Approuvé par:
Nathan Walker (Nouvelle-Zélande)

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In this paper, ASOC revisits some of the recommendations it has made in recent years on climate change issues, with a focus on providing examples of potential spatial management actions, and the data information needs and flow required to implement climate change action. ASOC suggests that it is time to turn the page on Read More
Soumis par:
Claire Christian (ASOC)

Approuvé par:
Claire Christian (ASOC)

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In this paper, we examine the effect of projected climate change on adult Dissostichus mawsoni in the Southern Ocean. We use General Boosted Regressions that account for both surface and bottom environmental conditions to estimate distributions under current and projected conditions for the 21 Read More
Soumis par:
Katharina Teschke (Allemagne)

Approuvé par:
Bettina Meyer (Allemagne)

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Climate change is an important issue for CCAMLR to conserve the marine living resources. Recent researches have shown that well-managed fishery can play an important role in promoting the carbon sink function of the ecosystem thereby alleviate the warming trend by absorbing more greenhouse gas CO₂ in the Read More
Soumis par:
Yi-Ping Ying (Chine)

Approuvé par:
Xianyong Zhao (Chine)

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Antarctic marine ecosystems and the Southern Ocean are undergoing significant changes driven by climate-induced processes. These include increased CO2 absorption and ocean acidification, reduced sea ice extent, and rising ocean temperatures due to human-caused greenhouse gas emissions. These Read More
Soumis par:
Sara Labrousse (France)

Approuvé par:
Marc Eléaume (France)

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This paper outlines key activities being undertaken by SCAR affiliated groups that may be of interest to the SC-CAMLR workshop on climate change, particularly in relation to the integration of scientific information on climate change and ecosystem interactions into CCAMLR’s work program. CCAMLR Members are encouraged to make specific requests for information from these Read More
Soumis par:
Susie Grant (Royaume-Uni)

Approuvé par:
Angharad Downes (SCAR)

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The first Marine Ecosystem Assessment for the Southern Ocean (MEASO) is a core program of Integrating Climate and Ecosystem Dynamics of the Southern Ocean (ICED). The outcomes of MEASO are in a Frontiers Research Topic ( Read More
Soumis par:
Susie Grant (Royaume-Uni)

Approuvé par:
Angharad Downes (SCAR)

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Climate variability and change are likely already affecting Antarctic marine ecosystems, fish and fisheries, but monitoring these effects and predicting future trajectories of change is challenging. In this paper for the CCAMLR Climate Change Workshop, we present a summary of the likely effects of climate variability and change on Antarctic skates as a case study for bycatch Read More
Soumis par:
Nathan Walker (Nouvelle-Zélande)

Approuvé par:
Nathan Walker (Nouvelle-Zélande)

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In November 2021 the IWC held a virtual workshop to consider climate change in the context of the conservation and management of cetaceans. Here we provide a brief overview of the main workshop discussions and its recommendations including a call for stronger collaboration between the IWC and CCAMLR. 

Polar seafloor ecosystems are changing rapidly and dramatically, challenging previously held paradigms of extreme dynamical stability. Warming-related declines in polar sea ice are expected to alter fluxes of phytoplankton and under-ice algae to the seafloor. Coastal Antarctic regions are biodiverse and productive regions, covered in sea ice for much of the year. This land- Read More
Soumis par:
Nathan Walker (Nouvelle-Zélande)

Approuvé par:
Nathan Walker (Nouvelle-Zélande)

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Antarctica and Southern Ocean environments are changing rapidly in ways that are not always foreshadowed by model predictions. Using the examples of recent rapid reductions in sea ice areal cover and increased occurrence of extreme climate events, this paper recommends the development of an assessment of risk posed by possible changes to critical processes that fundamentally Read More
Soumis par:
Nathan Walker (Nouvelle-Zélande)

Approuvé par:
Nathan Walker (Nouvelle-Zélande)

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Earth System Models (ESM) are global climate simulation models that are widely used around the world to project future climate and oceanographic status to inform management and conservation. For the Ross Sea region (RSr), we summarise the results of a New Zealand study just published where the physical and biogeochemical performance of 16 CMIP-5 and 16 CMIP-6 (Coupled Model Read More
Soumis par:
Nathan Walker (Nouvelle-Zélande)

Approuvé par:
Nathan Walker (Nouvelle-Zélande)

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Recruitment is one of the key factors affecting productivity of harvested species and the catch levels set under CCAMLR decision rules. Climate variability and change have the potential to affect the recruitment of target species in the CCAMLR Convention Area, including Antarctic toothfish (Dissostichus mawsoni). Improving knowledge of the factors affecting Read More
Soumis par:
Nathan Walker (Nouvelle-Zélande)

Approuvé par:
Nathan Walker (Nouvelle-Zélande)

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Earth-observation satellites and models can provide powerful information on environmental variability and change in the Southern Ocean. “Essential Climate Variables” (ECVs) are physical, chemical and/or biological properties (or a group of linked variables) that critically contribute to the characterisation of the state of a natural system. Around the Antarctic, multi-decadal Read More
Soumis par:
Nathan Walker (Nouvelle-Zélande)

Approuvé par:
Nathan Walker (Nouvelle-Zélande)

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The effects of environmental variability and change on toothfish population dynamics and productivity are largely unknown and are difficult to predict given our current understanding of the Southern Ocean environment, species and ecosystems. In 2018 a preliminary method was endorsed by CCAMLR Scientific Committee whereby existing information from toothfish fisheries could be used Read More
Soumis par:
Nathan Walker (Nouvelle-Zélande)

Approuvé par:
Nathan Walker (Nouvelle-Zélande)

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In this paper we have highlighted and summarised how climate change and fisheries management can interact, and how climate variability and long-term environmental change can be considered in CCAMLR stock assessments and decision rules. Noting these findings, we propose some points for discussion regarding the further integration of climate change considerations into the Read More
Soumis par:
Timothy Earl (Royaume-Uni)

Approuvé par:
Martin Collins (Royaume-Uni)

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This working paper introduces the relevance, justification, and objectives of the project ClimGenAT, presenting novel tools to understand climate change impacts on species in the Southern Ocean, with a particular focus on Antarctic toothfish.

Siegert et al. (2023) seeks to describe the kind of extreme environmental events that have been observed in Antarctica in recent years that are significantly different to the average ranges of variability across a variety of realms (ocean, atmosphere, cryosphere, biosphere etc).  The paper considers the likely causes Read More
Soumis par:
Martin Collins (Royaume-Uni)

Approuvé par:
Martin Collins (Royaume-Uni)

Publication:
Siegert, M.J., M.J. Bentley, A. Atkinson, T.J. Bracegirdle, P. Convey, B. Davies, R. Downie, A.E. Hogg, C. Holmes, K.A. Hughes, M.P. Meredith, N. Ross, J. Rumble and J. Wilkinson. 2023. Front. Environ. Sci., 11:1229283, doi: 10.3389/fenvs.2023.12292

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Over the last half of the 20th century, the western Antarctic Peninsula has been one of the most rapidly warming regions on Earth, leading to substantial reductions in regional sea ice coverage. These changes are modulated by atmospheric forcing, including the Amundsen Sea Low (ASL) pressure system. We utilized a novel 25-year (1993–2017) time series to model the effects of environmental Read More
Soumis par:
George Watters (États-Unis d'Amérique)

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

Publication:
Corso, A.D., D.K. Steinberg, S.E. Stammerjohn and E.J. Hilton 2022. Climate drives long-term change in Antarctic Silverfish along the western Antarctic Peninsula. Commun. Biol., 5:104, doi: 10.1038/s42003-022-03042-3

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Climate change is having profound effects on populations of fished species and the ecosystems on which they depend, lending to a growing body of work that advocates for climate resilience to be a priority in fisheries management. A paper published in Ocean and Coastal Management in May 2023 provides a comprehensive Read More
Soumis par:
Claire Christian (ASOC)

Approuvé par:
Claire Christian (ASOC)

Publication:
Chavez-Molina, V., S.L. Becker, E. Carr, R.D. Cavanagh, D. Dorman, E. Nocito, Z. Sylvester, B. Wallace, C. White and C.M. Brooks. 2023. Ocean Coast. Manag., 239:106580, doi: 10.1016/j.ocecoaman.2023.106580

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