1. The lower bathyal and abyssal seafloor fauna of eastern Australia
- Author
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Francesco Criscione, Magdalena N. Georgieva, Elena K. Kupriyanova, Christopher L. Mah, Shane T. Ahyong, Alan Williams, Anders Hallan, Timothy D. O'Hara, Merrick Ekins, Andrew Hosie, Karen Gowlett-Holmes, J. A. Konsgrud, Alastair G C Graham, Anna Murray, Ingo Burghardt, Hannelore Paxton, K. Moore, Jeanette E. Watson, Martin F. Gomon, Hugh MacIntosh, K. L. Merrin, Nicholas J. Bax, David A. Staples, Hiroki Kise, A. Miskelly, Robin S. Wilson, M. L. Mitchell, Phil Alderslade, P. M. O’Loughlin, M. Eléaume, M. Mackenzie, D. Bray, Laetitia M. Gunton, John J. Pogonoski, C. C. Lu, J. Zhang, Frank Köhler, Pat Hutchings, C. A. Farrelly, Tom Alvestad, Nataliya Budaeva, J. K. Finn, Andrea L. Crowther, Museum Victoria [Melbourne], CSIRO Marine and Atmosphere Research [Hobart], Commonwealth Scientific and Industrial Research Organisation [Canberra] (CSIRO), Australian Museum Research Institute (AMRI), Australian Museum [Sydney], Natural History Collections, University of Bergen (UiB), South Australian Museum, Queensland Museum, Institut de Systématique, Evolution, Biodiversité (ISYEB ), Muséum national d'Histoire naturelle (MNHN)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA), The Natural History Museum [London] (NHM), Western Australian Museum (WAM), Department of Biological Sciences [Sydney, Australia] (Macquarie University), Macquarie University, University of the Ryukyus, National Museum of Natural History [Washington], Tasmanian Museum and Art Gallery (TMAG), South China Sea Environmental Monitoring Centre, Institute for Marine and Antarctic Studies [Horbat] (IMAS), and University of Tasmania [Hobart, Australia] (UTAS)
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0106 biological sciences ,lcsh:QH1-199.5 ,Fauna ,[SDV]Life Sciences [q-bio] ,Infauna ,Biodiversity ,Aquatic Science ,lcsh:General. Including nature conservation, geographical distribution ,Oceanography ,Epifauna ,010603 evolutionary biology ,01 natural sciences ,Bathyal zone ,Abyssal zone ,14. Life underwater ,Transect ,Ecology, Evolution, Behavior and Systematics ,ComputingMilieux_MISCELLANEOUS ,Taxonomy ,Ecology ,010604 marine biology & hydrobiology ,Sediment ,15. Life on land ,Seafloor spreading ,Deep sea ,Biogeography ,Benthic zone ,[SDE]Environmental Sciences ,Geology - Abstract
Background Our knowledge of the benthic fauna at lower bathyal to abyssal (LBA, > 2000 m) depths off Eastern Australia was very limited with only a few samples having been collected from these habitats over the last 150 years. In May–June 2017, the IN2017_V03 expedition of the RV Investigator sampled LBA benthic communities along the lower slope and abyss of Australia’s eastern margin from off mid-Tasmania (42°S) to the Coral Sea (23°S), with particular emphasis on describing and analysing patterns of biodiversity that occur within a newly declared network of offshore marine parks. Methods The study design was to deploy a 4 m (metal) beam trawl and Brenke sled to collect samples on soft sediment substrata at the target seafloor depths of 2500 and 4000 m at every 1.5 degrees of latitude along the western boundary of the Tasman Sea from 42° to 23°S, traversing seven Australian Marine Parks. Results The biological sampling included 35 beam trawls, 28 Brenke sleds, 8 box cores, 20 surface meso-zooplankton tows, and 7 Deep Towed Camera transects. In total, 25,710 specimens were identified to 1084 taxonomic entities, including 847 species-level, 144 genus-level and 69 family-level and 24 higher-level taxa. Of the species-level taxa, only 457 were assigned species-level taxonomic names, which implies that up to 58% of the collected fauna is undescribed. In addition, the ranges of numerous species have been extended to include the western Tasman Sea. Conclusions The lower bathyal and abyssal fauna of soft sediment seafloors off eastern Australia has been systematically surveyed for the first time. The resultant collections will provide the foundation for much future ecological, biogeographical, phylogenetic and taxonomic research.
- Published
- 2020
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