Publications:

Englebert et al. 2017


scientific article | PLoS ONE | open access Open access

Lower mesophotic coral communities (60-125 m depth) of the Northern Great Barrier Reef and Coral Sea

Englebert N, Bongaerts P, Muir PR, Hay KB, Pichon M, Hoegh-Guldberg O

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Abstract

Mesophotic coral ecosystems in the Indo-Pacific remain relatively unexplored, particularly at lower mesophotic depths (≥60 m), despite their potentially large spatial extent. Here, we used a remotely operated vehicle to conduct a qualitative assessment of the zooxanthellate coral community at lower mesophotic depths (60–125 m) at 10 different locations in the Great Barrier Reef Marine Park and the Coral Sea Commonwealth Marine Reserve. Lower mesophotic coral communities were present at all 10 locations, with zooxanthellate scleractinian corals extending down to ~100 metres on walls and ~125 m on steep slopes. Lower mesophotic coral communities were most diverse in the 60–80 m zone, while at depths of ≥100 m the coral community consisted almost exclusively of the genus Leptoseris. Collections of coral specimens (n = 213) between 60 and 125 m depth confirmed the presence of at least 29 different species belonging to 18 genera, including several potential new species and geographic/depth range extensions. Overall, this study highlights that lower mesophotic coral ecosystems are likely to be ubiquitous features on the outer reefs of the Great Barrier Reef and atolls of the Coral Sea, and harbour a generic and species richness of corals that is much higher than thus far reported. Further research efforts are urgently required to better understand and manage these ecosystems as part of the Great Barrier Reef Marine Park and Coral Sea Commonwealth Marine Reserve.

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10.1371   journal.pone.0170336
Keywords
Meta-data
Depth range
60- 125 m

Mesophotic “mentions”
72 x (total of 5593 words)

Fields
Biodiversity
Community structure

Focusgroups
Scleractinia (Hard Corals)

Locations
Australia - Coral Sea
Australia - Great Barrier Reef

Platforms
Remotely Operated Vehicle (ROV)

Author profiles
Norbert Englebert ( 8 pubs)
Pim Bongaerts ( 25 pubs)
Paul Muir ( 8 pubs)
Michel Pichon ( 2 pubs)