Spatiotemporal Overlap of Baleen Whales and Krill Fisheries in the Western Antarctic Peninsula Region DOI Creative Commons
Ryan R Reisinger, Philip N. Trathan, Christopher M. Johnson

et al.

Frontiers in Marine Science, Journal Year: 2022, Volume and Issue: 9

Published: July 21, 2022

In Antarctica, abundant consumers rely on Antarctic krill for food, but are also the subject of a commercial fishery. The fishery overlaps in time and space with foraging areas these consumers, thus potential competition between fisheries is major management concern. managed by Commission Conservation Marine Living Resources an ecosystem approach, according to which fishing should not interfere either population growth krill, or krill-dependent consumers. Krill catches have become increasingly spatially concentrated small number hotspots, raising concerns about how local depletion impacts Such demonstrates that there mismatch spatial temporal scale at currently managed, operate forage. Information seasonal dynamics predator abundance their behaviour fundamental future precautionary We analysed spatiotemporal distribution two – humpback minke whales fishing, off Western Peninsula. used whale tracking data (58 tracks 19 tracks) develop random forest models predicting monthly from January-July. Using predictions, we calculated spatiotemporally-explicit geographic overlap fisheries, latter represented effort catch data. Over season, hotspots shifted southwest, into Bransfield Strait where was highest. Predicted increased over same period, while predicted showed opposite trend. For both whale-fishing interaction hotspot Strait, strongest April May. Our results illustrate fine likely interactions baleen fishery, concentration underlining need more closely aligned predator-fishery interactions.

Language: Английский

Climate change and extreme events are changing the biology of Polar Regions DOI Open Access
Sharon A. Robinson

Global Change Biology, Journal Year: 2022, Volume and Issue: 28(20), P. 5861 - 5864

Published: July 12, 2022

Polar landscapes and their unique biodiversity are threatened by climate change. Wild reindeer cultural ecological keystone species, traversing across the northern Eurasian Arctic throughout year (Wild in sub-Arctic Kuhmo, Finland. Photo: Antti Leinonen, Snowchange Cooperative. Used with permission). In contrast, Antarctic terrestrial is found on islands ice (or ocean) which support assemblages of plants animals (King George Island, South Shetlands; photo Andrew Netherwood. This VSI examines how changing threatens these diverse marine habitats that they support.

Language: Английский

Citations

26
Towards a regional baseline of Greenland's continental shelf seabed biodiversity DOI Creative Commons
Nadescha Zwerschke,

Nanette Hammeken Arboe,

Johanna Behrisch

et al.

Journal of Environmental Management, Journal Year: 2025, Volume and Issue: 382, P. 125285 - 125285

Published: April 19, 2025

Polar ecosystems are on the forefront of climate change, yet large parts our polar seas remain unexplored. This affects ability to detect change in these regions and hampers global science driven conservation efforts. In Greenland, which is heavily reliant demersal fisheries, this also economy by complicating sustainability certification. Based a 8-year benthic bycatch monitoring programme recording primarily megabenthos (>1 cm), we provide first baseline ecosystem Greenland. We calculated richness, rarity, vulnerable marine indicator taxon richness (VME) biomass across 21 % Greenlandic EEZ suggest seven areas be considered for management effort based 75th percentile sample distribution rarity VMEs. could identify clear pattern between East West Greenland greater abundance ostur sponges presence rare species West. identified patterns geographic-scale (Gamma richness) depth, latitude, distance from coast temperature found that decreased with latitude depth increased towards shelf-break as expected. Some deviation might have been due sampling bias. Generally, taxa were occupy spatial few endemic or study region. largest assessment shelf date offers essential guidance policymakers Arctic providing key knowledge hitherto understudied area implementing an easily applicable approach selection achievable nations limited resources.

Language: Английский

Citations

0
Monitoring persistent organic chemicals in Antarctica in support of global chemical policy: a horizon scan of priority actions and challenges DOI Creative Commons
Susan Bengtson Nash, Pernilla Bohlin‐Nizzetto, Cristobal Galbán‐Malagón

et al.

The Lancet Planetary Health, Journal Year: 2023, Volume and Issue: 7(5), P. e435 - e440

Published: May 1, 2023

Global production and emission of chemicals exceeds societal capacities for assessment monitoring. This situation calls improved chemical regulatory policy frameworks increased support expedited decision making within existing frameworks. The polar regions the Earth represent unique sentinel areas study global behaviour, data arising from these can strengthen However, pollution research monitoring in Antarctic is underdeveloped, with geopolitical complexities absence legal recognition international serving to neutralise progress made other regions. Personal View represents a horizon scan by action group Input Pathways Persistent Organic Pollutants Antarctica, Scientific Committee Research. Four priority facilitation gaps are outlined, recommendations Antarctica Treaty parties strategic against priorities.

Language: Английский

Citations

9
Managing for climate resilient fisheries: Applications to the Southern Ocean DOI Creative Commons
Vasco Chavez‐Molina, Emily S. Nocito, Eloise Carr

et al.

Ocean & Coastal Management, Journal Year: 2023, Volume and Issue: 239, P. 106580 - 106580

Published: March 27, 2023

Climate change is having profound effects on populations of fished species and the ecosystems which they depend, lending to a growing body work that advocates for climate resilience be priority in fishery management.Here, we provide comprehensive analysis tools needed manage resiliency.The Antarctic region among most vulnerable change, thus, then consider resilient management utilized by Commission Conservation Marine Living Resources (CCAMLR), responsible marine living resources as part Treaty System.We note progress, gaps, opportunities implementation.Across literature, ecosystembased was cited an appropriate tool ecosystems, use model outputs (projections simulations), protected areas (MPAs), dynamic stock assessments.CCAMLR has unique position where its Convention effectively mandates principles ecosystem-based precautionary approach managing fisheries, many Member States have been advocating initiatives within this approach.While CCAMLR made limited overall progress towards ensuring resilience, it advanced some areas, such MPA implementation, developing risk assessment krill, including statements reports, although there much done.While remains worldwide issue must addressed global scale, holds responsibility adaptively Southern Ocean resilience.

Language: Английский

Citations

8
Climate Crisis Impact on Ecosystem Services and Human Well-Being DOI
Aju David Raj,

R. Padmapriya,

Anu David Raj

et al.

Climate change management, Journal Year: 2024, Volume and Issue: unknown, P. 3 - 36

Published: Jan. 1, 2024

Language: Английский

Citations

2
Spatiotemporal Overlap of Baleen Whales and Krill Fisheries in the Western Antarctic Peninsula Region DOI Creative Commons
Ryan R Reisinger, Philip N. Trathan, Christopher M. Johnson

et al.

Frontiers in Marine Science, Journal Year: 2022, Volume and Issue: 9

Published: July 21, 2022

In Antarctica, abundant consumers rely on Antarctic krill for food, but are also the subject of a commercial fishery. The fishery overlaps in time and space with foraging areas these consumers, thus potential competition between fisheries is major management concern. managed by Commission Conservation Marine Living Resources an ecosystem approach, according to which fishing should not interfere either population growth krill, or krill-dependent consumers. Krill catches have become increasingly spatially concentrated small number hotspots, raising concerns about how local depletion impacts Such demonstrates that there mismatch spatial temporal scale at currently managed, operate forage. Information seasonal dynamics predator abundance their behaviour fundamental future precautionary We analysed spatiotemporal distribution two – humpback minke whales fishing, off Western Peninsula. used whale tracking data (58 tracks 19 tracks) develop random forest models predicting monthly from January-July. Using predictions, we calculated spatiotemporally-explicit geographic overlap fisheries, latter represented effort catch data. Over season, hotspots shifted southwest, into Bransfield Strait where was highest. Predicted increased over same period, while predicted showed opposite trend. For both whale-fishing interaction hotspot Strait, strongest April May. Our results illustrate fine likely interactions baleen fishery, concentration underlining need more closely aligned predator-fishery interactions.

Language: Английский

Citations

11