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Antarctic ecosystem responses following ice‐shelf collapse and iceberg calving: Science review and future research

Ingels, Jeroen and Aronson, Richard B and Smith, Craig R and Baco, Amy and Bik, Holly M and Blake, James A and Brandt, Angelika and Cape, Mattias and Demaster, David and Dolan, Emily and Domack, Eugene and Fire, Spencer and Geisz, Heidi and Gigliotti, Michael and Griffiths, Huw and Halanych, Kenneth M and Havermans, Charlotte and Huettmann, Falk and Ishman, Scott and Kranz, Sven A and Leventer, Amy and Mahon, Andrew R and McClintock, James and McCormick, Michael L and Mitchell, B Greg and Murray, Alison E and Peck, Lloyd and Rogers, Alex and Shoplock, Barbara and Smith, Kathryn E and Steffel, Brittan and Stukel, Michael R and Sweetman, Andrew K and Taylor, Michelle and Thurber, Andrew R and Truffer, Martin and Putte, Anton and Vanreusel, Ann and Zamora‐Duran, Maria Angelica (2021) 'Antarctic ecosystem responses following ice‐shelf collapse and iceberg calving: Science review and future research.' Wiley Interdisciplinary Reviews: WIREs Climate Change, 12 (1). ISSN 1757-7780

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Abstract

The calving of A‐68, the 5,800‐km², 1‐trillion‐ton iceberg shed from the Larsen C Ice Shelf in July 2017, is one of over 10 significant ice‐shelf loss events in the past few decades resulting from rapid warming around the Antarctic Peninsula. The rapid thinning, retreat, and collapse of ice shelves along the Antarctic Peninsula are harbingers of warming effects around the entire continent. Ice shelves cover more than 1.5 million km² and fringe 75% of Antarctica's coastline, delineating the primary connections between the Antarctic continent, the continental ice, and the Southern Ocean. Changes in Antarctic ice shelves bring dramatic and large‐scale modifications to Southern Ocean ecosystems and continental ice movements, with global‐scale implications. The thinning and rate of future ice‐shelf demise is notoriously unpredictable, but models suggest increased shelf‐melt and calving will become more common. To date, little is known about sub‐ice‐shelf ecosystems, and our understanding of ecosystem change following collapse and calving is predominantly based on responsive science once collapses have occurred. In this review, we outline what is known about (a) ice‐shelf melt, volume loss, retreat, and calving, (b) ice‐shelf‐associated ecosystems through sub‐ice, sediment‐core, and pre‐collapse and post‐collapse studies, and (c) ecological responses in pelagic, sympagic, and benthic ecosystems. We then discuss major knowledge gaps and how science might address these gaps.

Item Type: Article
Divisions: Faculty of Science and Health > Life Sciences, School of
Depositing User: Elements
Date Deposited: 29 Mar 2021 12:32
Last Modified: 29 Mar 2021 12:32
URI: http://repository.essex.ac.uk/id/eprint/28838

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