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Geomorphological evidence of large vertebrates interacting with the seafloor at abyssal depths in a region designated for deep-sea mining
Marsh, L.; Huvenne, V.A.I.; Jones, D.O.B. (2018). Geomorphological evidence of large vertebrates interacting with the seafloor at abyssal depths in a region designated for deep-sea mining. Royal Society Open Science 5(8): 180286. https://dx.doi.org/10.1098/rsos.180286
In: Royal Society Open Science. The Royal Society: London. ISSN 2054-5703; e-ISSN 2054-5703
Peer reviewed article  
Beschikbaar in  Auteurs 
Trefwoorden
    Mammalia [WoRMS]
    Marien/Kust
Author keywords
    marine mammals; deep-sea mining; autonomous underwater vehicle; deep-diving mammals; Clarion-Clipperton zone; ichnology
Auteurs  Top 
  • Marsh, L.
  • Huvenne, V.A.I.
  • Jones, D.O.B.
Abstract
    Exploration licences for seafloor mineral deposits have been granted across large areas of the world's oceans, with the abyssal Pacific Ocean being the primary target for polymetallic nodules—a potentially valuable source of minerals. These nodule-bearing areas support a large diversity of deep-sea life and although studies have begun to characterize the benthic fauna within the region, the ecological interactions between large bathypelagic vertebrates of the open ocean and the abyssal seafloor remain largely unknown. Here we report seafloor geomorphological alterations observed by an autonomous underwater vehicle that suggest large vertebrates could have interacted with the seafloor to a maximum depth of 4258 m in the recent geological past. Patterns of disturbance on the seafloor are broadly comparable to those recorded in other regions of the world's oceans attributed to beaked whales. These observations have important implications for baseline ecological assessments and the environmental management of potential future mining activities within this region of the Pacific.
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