Deep-sea benthic megafauna hotspot shows indication of resilience to impact from massive turbidity flow

Frontiers in Marine Science

Marine Science

Alan R. Orpin¹  Scott D. Nodder¹  Joshu J. Mountjoy¹  Daniel Leduc¹  Arne Pallentin¹  Caroline Chin¹  David A. Bowden¹  Ashley A. Rowden²  Katharine T. Bigham² 

[1] National Institute of Water and Atmospheric Research (NIWA), Wellington, New Zealand;National Institute of Water and Atmospheric Research (NIWA), Wellington, New Zealand;School of Biological Sciences, Victoria University of Wellington, Wellington, New Zealand;

关键词: deep sea;    morphology;    resilience (environmental);    megafauna;    benthic community;    disturbance;    canyon;    turbidity flow;   

DOI  :  10.3389/fmars.2023.1180334

 received in 2023-03-06, accepted in 2023-04-25,  发布年份 2023

来源: Frontiers

【 摘 要 】

Sediment density flows are large scale disturbances that can have dramatic impacts on seafloor animal communities in the deep sea. Seafloor imagery collected in Kaikōura Canyon (New Zealand), before and after a sediment density flow event that included debris and turbidity flows triggered by a 2016 Mw 7.8 Kaikōura Earthquake, shows the recovery trajectory of the animal community in the canyon head in the weeks, months, and years following the disturbance. The canyon community appears resilient to this event, with models estimating full recovery within a minimum of 4.5–5.1 years and as long as 12 years. The implications of the resilience of this deep-sea community are discussed in the context of the local marine protected area, the surrounding fishery, and global seabed mining.

【 授权许可】

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Copyright © 2023 Bigham, Rowden, Bowden, Leduc, Pallentin, Chin, Mountjoy, Nodder and Orpin