What is needed to implement a sustainable expansion of the Antarctic krill fishery in the Southern Ocean?

Marine Policy, Journal Year: 2023, Volume and Issue: 155, P. 105770 - 105770

Published: July 18, 2023

Policy differences amongst CCAMLR Members are increasingly affecting decision-making with regards to management of Southern Ocean fisheries. Major reflect differing interpretations the Convention's primary objective: conservation marine living resources, where includes rational use. The best available science historically informed decisions, but policy objectives coming fore. Resolving how scientific evidence is used in essential, given this has consequences for all topics. In southwest Atlantic, and it central controlled development Antarctic krill fishery. Much work already been undertaken allow catches increase, more needed, including ensuring that, as yet untested, procedures intended. Precautionary should therefore now focus upon ecosystem resilience not compromised. Generally, area managed by experiences relatively light human pressures, newly proposed catch limits, set change. Before appropriate monitoring spatial tools agreed ensure that biodiversity adequately maintained, especially regional climate Without such constraints, fishery expand. An integrated programme could help adapt. implementing this, areas economic interests most intense, is, over shelf elevated bathymetry. Large-scale remote little interest be aside closed areas, until future time ecological impact assessments these largely unexploited areas.

Language: Английский

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The future of the South Georgia and South Sandwich Islands marine protected area in a changing environment: The choice between industrial fisheries, or ecosystem protection

Marine Policy, Journal Year: 2023, Volume and Issue: 155, P. 105773 - 105773

Published: July 18, 2023

South Georgia and the Sandwich Islands (SGSSI) comprise an Overseas Territory of UK. For over two centuries, islands surrounding waters were subject to serial over-exploitation commercially valuable marine species. First seals, then whales, later some species fish harvested virtual economic extinction. Today, exploitation is strictly regulated: through multilateral Convention on Conservation Antarctic Marine Living Resources; commercial whaling moratorium International Whaling Commission; now, increasingly, local sovereign government legislation. Commercial fisheries still operate for three one crustacean, krill. Here, I consider aspects these fisheries, help inform current review SGSSI Protected Area (MPA), highlighting how future management must take into account important ongoing changes in this biodiverse ecosystem. Two issues are paramount importance: recovery baleen whale species; climate change. Both increase uncertainty managers, so that considerations about their implications now be directly included dependent With previously exploited species, others, MPA could managed with additional ecologically-appropriate large no-take areas, commensurate increasing levels ocean protection advocated by a growing number scientists governments. Spatial reflecting habitat use whales prey, krill, would, umbrella protection, also protect other biodiversity integral operation

Language: Английский

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A new dynamic distribution model for Antarctic krill reveals interactions with their environment, predators, and the commercial fishery in the south Scotia Sea region

Limnology and Oceanography, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 1, 2025

Abstract The management strategy for the Antarctic krill ( Euphausia superba ) fishery is being revised. A key aim to spatially and temporally allocate catches in a manner that minimizes impacts both stock dependent predators. This process requires spatial information on distribution abundance of krill, yet gaps exist an important fishing area surrounding South Orkney Islands south Scotia Sea. To fill this need, we create dynamic model region. We used data from consistent acoustic survey (2011–2020) year‐specific environmental covariates within two‐part hurdle model. successfully captured observed temporal patterns density. found be most included distance shelf break, summer sea ice extent, salinity. northern eastern edges were areas consistently high density displayed strong overlap between intense activity foraging chinstrap penguins. High mean was also linked oceanographic features located Weddell Our suggest years which these closer positive Southern Annular Mode higher densities. findings highlight existing fishery–predator–prey region support hypothesis Sea oceanography may play role transporting into These results will feed next phase fisheries assessment.

Language: Английский

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Changing the focus: The need for cross-scale dynamic management in the Southern Ocean and implications for holistic conservation of Antarctic marine living resources

Marine Policy, Journal Year: 2024, Volume and Issue: 170, P. 106361 - 106361

Published: Aug. 30, 2024

Language: Английский

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Integrating the needs of recovering populations of baleen whales into the revised management framework for the commercial fishery for Antarctic krill

Frontiers in Marine Science, Journal Year: 2024, Volume and Issue: 11

Published: Dec. 20, 2024

We consider how the ongoing recovery of baleen whale populations requires improved understanding when managing largest commercial fishery in Southern Ocean, for Antarctic krill. Baleen whales already represent one major consumers krill, and as such compete with fishery. However, they are not explicitly included either monitoring programme or krill fisheries management approach Commission Conservation Marine Living Resources (CCAMLR). Individual at direct mortality risk from ship strike, entanglement, by-catch. In addition, sub-lethal impacts on individuals, albeit population-level consequences, via decreased body condition reproductive rates, may arise local depletion prey prey-field disturbance that increases energetic costs. Mitigating these risks whales, including those species yet recovered, fully integrated into procedures. A vital issue will be to facilitate blue, fin sei which still heavily depleted relative their pre-whaling abundance. Part answer this CCAMLR resolves outstanding issues related its newly emerging revised framework. Management is data-poor, much scientific support reliant upon data now decades old. The decision rules determining sustainable yields need careful re-evaluation, given were negotiated a time rarely observed, catches low relation estimated available biomass. marine ecosystem spatially temporally dynamic, changing, assumes static system. An explicit commitment collect up-to-date about help inform Precaution argues catch levels should increase until adequate effective management. Knowledge status inevitably require close collaboration International Whaling Commission.

Language: Английский

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Cross-platform Mobile Web Development Framework with Data Interaction Approach

Published: Dec. 1, 2023

The role of framework and data interaction in the mobile web is important, but there a problem inaccurate outcome evaluation. AJAX model does not solve web, evaluation unreasonable. Therefore, this paper proposes cross-platform way to analyze between data. First, metadata used evaluate data, indicators are divided according requirements interaction, which reduced Interference factors framework's with Then, interacts forms scheme, performs results Comprehensive analysis. Adobe Edge Inspect simulation shows that approach correct under certain criteria accuracy time Web better than model.

Language: Английский

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