The Impact of Regional Climate Change on the Marine Ecosystem of the Western Antarctic Peninsula

Clarke, Andrew; Barnes, David K. A.; Bracegirdle, Thomas J.; Ducklow, Hugh W.; King, John C.; Meredith, Michael P.; Murphy, Eugene J.; Peck, Lloyd S.

doi:10.1002/9781444347241.ch4

Cited by 6 publications

(4 citation statements)

References 243 publications

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“…Canyon dynamics along some regions of the Antarctic continental margin may be affected both by latitudinal trends in atmospheric warming and sea ice loss, as well as regional shifts in winds and ocean circulation. Along the Amundsen and Bellinghausen Seas, the southern boundary of the Antarctic Circumpolar Current (ACC) is not spatially separated by the presence of a large subpolar gyre (like in the Weddell and Ross Seas) but abuts the continental shelf (Nitsche et al 2007, Clarke et al 2012, Martinson 2012. Upper Circumpolar Deep Water (UCDW) is found in the mid-level ACC and is characterized by a vertical maximum in potential temperature, low dissolved oxy gen, and relatively high macro-and micronutrient concentrations (Hofmann et al 1996, Meredith & King 2005.…”

Section: Introductionmentioning

confidence: 99%

Effect of continental shelf canyons on phytoplankton biomass and community composition along the western Antarctic Peninsula

Kavanaugh¹,

Abdala²,

Ducklow³

et al. 2015

Mar. Ecol. Prog. Ser.

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Section: Introductionmentioning

confidence: 99%

Effect of continental shelf canyons on phytoplankton biomass and community composition along the western Antarctic Peninsula

Kavanaugh¹,

Abdala²,

Ducklow³

et al. 2015

Mar. Ecol. Prog. Ser.

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“…Diverse marine biological projects are connected to RaTS, with particular emphasis on benthic ecology and the impacts of environmental disturbance and change (e.g. Clarke et al, 2012;and refs therein).…”

Section: How Were the New Studies Done?mentioning

confidence: 99%

Marine studies at the western Antarctic Peninsula: Priorities, progress and prognosis

Meredith

Stefels

Leeuwe

2017

Deep Sea Research Part II: Topical Studies in Oceanography

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“…There is increasing concern about the endurance of life forms on Earth in the face of rising environmental temperatures [ 1 , 2 ]. As part of that awareness, the potential vulnerability of high latitude marine ecosystems, such as the Antarctic shelf, has drawn particular attention [ 3 , 4 ], as they are likely facing some of the most rapid environmental changes on the planet [5, 6; see, however, 7]. Furthermore, isolated from the rest of the world by the Antarctic Circumpolar Current, inhabitants of this ecosystem have evolved under extremely cold conditions which remained thermally stable for millions of years [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

Antarctic teleosts with and without hemoglobin behaviorally mitigate deleterious effects of acute environmental warming

et al. 2021

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Recent studies forecast that many ectothermic animals, especially aquatic stenotherms, may not be able to thrive or even survive predicted climate change. These projections, however, generally do not call much attention to the role of behavior, an essential thermoregulatory mechanism of many ectotherms. Here we characterize species-specific locomotor and respiratory responses to acute ambient warming in two highly stenothermic Antarctic Notothenioid fishes, one of which (Chaenocephalus aceratus) lacks hemoglobin and appears to be less tolerant to thermal stress as compared to the other (Notothenia coriiceps), which expresses hemoglobin. At the onset of ambient warming, both species perform distinct locomotor maneuvers that appear to include avoidance reactions. In response to unavoidable progressive hyperthermia, fishes demonstrate a range of species-specific maneuvers, all of which appear to provide some mitigation of the deleterious effects of obligatory thermoconformation and to compensate for increasing metabolic demand by enhancing the efficacy of branchial respiration. As temperature continues to rise, Chaenocephalus aceratus supplements these behaviors with intensive pectoral fin fanning which may facilitate cutaneous respiration through its scaleless integument, and Notothenia coriiceps manifests respiratory-locomotor coupling during repetitive startle-like maneuvers which may further augment gill ventilation. The latter behaviors, found only in Notothenia coriiceps, have highly stereotyped appearance resembling Fixed Action Pattern sequences. Altogether, this behavioral flexibility could contribute to the reduction of the detrimental effects of acute thermal stress within a limited thermal range. In an ecologically relevant setting, this may enable efficient thermoregulation of fishes by habitat selection, thus facilitating their resilience in persistent environmental change.

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The Impact of Regional Climate Change on the Marine Ecosystem of the Western Antarctic Peninsula

Cited by 6 publications

References 243 publications

Effect of continental shelf canyons on phytoplankton biomass and community composition along the western Antarctic Peninsula

Effect of continental shelf canyons on phytoplankton biomass and community composition along the western Antarctic Peninsula

Marine studies at the western Antarctic Peninsula: Priorities, progress and prognosis

Antarctic teleosts with and without hemoglobin behaviorally mitigate deleterious effects of acute environmental warming

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