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Domination of mesophotic ecosystems in the Wakatobi Marine National Park (Indonesia) by sponges, soft corals and other non-hard coral species

Published online by Cambridge University Press:  29 October 2018

J.J. Bell ,
J. Jompa ,
A. Haris ,
S. Werorilangi ,
M. Shaffer  and
C. Mortimer
J.J. Bell*
Affiliation:
Victoria University of Wellington, School of Biological Sciences, Wellington, 6140, New Zealand
J. Jompa
Affiliation:
Research and Development Centre on Marine, Coastal and Small Islands, Hasanuddin University, Makassar, Indonesia
A. Haris
Affiliation:
Research and Development Centre on Marine, Coastal and Small Islands, Hasanuddin University, Makassar, Indonesia
S. Werorilangi
Affiliation:
Research and Development Centre on Marine, Coastal and Small Islands, Hasanuddin University, Makassar, Indonesia
M. Shaffer
Affiliation:
Victoria University of Wellington, School of Biological Sciences, Wellington, 6140, New Zealand
C. Mortimer
Affiliation:
Victoria University of Wellington, School of Biological Sciences, Wellington, 6140, New Zealand
*
Author for correspondence: J.J. Bell, E-mail: james.bell@vuw.ac.nz
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Abstract

Mesophotic ecosystems have been relatively poorly studied in the Indo-Pacific and in particular within the Coral Triangle region. Here we used a mini-ROV to explore the changes in major benthic groups at two sites (~200 m apart) in the Wakatobi Marine National Park, SE Sulawesi, Indonesia spanning shallow water coral reefs (5 m) to deeper water mesophotic ecosystems (80 m). We found very similar patterns at both sites where coral cover peaked at 15 m, declined rapidly by 30 m, and was virtually absent at 50 m. As coral declined there was a marked increase in sponges, soft corals and other encrusting organisms (including ascidians, bryozoans, tubeworms, gorgonians and molluscs). Importantly, our results differ from most previous studies in other geographic locations where hard corals extend much deeper. It is unclear what drives this difference but it may be related to higher levels of turbidity and therefore reduced light penetration in the Wakatobi compared with other areas, which limits the vertical extent of coral development.

Keywords

Mesophotic coral reefsmesophotic ecosystemsPoriferaspongeWakatobi
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 99 , Issue 4 , June 2019 , pp. 771 - 775
Copyright
Copyright © Marine Biological Association of the United Kingdom 2018 

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References

Bell, JJ, Davy, SK, Jones, T, Taylor, MW and Webster, NS (2013) Could some coral reefs become sponge reefs as our climate changes? Global Change Biology 19, 2613–2624.Google Scholar
Bell, JJ and Smith, D (2004) Ecology of sponge assemblages (Porifera) in the Wakatobi region, south-east Sulawesi, Indonesia: richness and abundance. Journal of the Marine Biological Association of the United Kingdom 84, 581–591.10.1017/S0025315404009580hGoogle Scholar
Clarke, KR and Gorley, RN (2006) PRIMER v6: User Manual/Tutorial. Plymouth: Primer-E.Google Scholar
Clarke, KR and Warwick, RM (2001) Change in Marine Communities: An Approach to Statistical Analysis and Interpretation, 2nd Edn. Plymouth: PRIMER-E.Google Scholar
Clifton, J and Unsworth, RKF (2010) Introduction to the Wakatobi National Park. In Clifton, J, Unsworth, RKF and Smith, DJ (eds), Marine Conservation and Research in the Coral Triangle: The Wakatobi National Park. New York, NY: Nova Publishers, pp. 1–9.Google Scholar
Crabbe, MJC and Smith, DJ (2005) Sediment impacts on growth rates of Acropora and Porites corals from fringing reefs of Sulawesi, Indonesia. Coral Reefs 24, 437–441.10.1007/s00338-005-0004-6Google Scholar
Englebert, N, Bongaerts, P, Muir, PR, Hay, KB, Pichon, M and Hoegh-Guldberg, O (2017) Lower mesophotic coral communities (60–125 m depth) of the northern Great Barrier Reef and Coral Sea. PLoS ONE 12, e0170336.10.1371/journal.pone.0170336Google Scholar
Hoeksema, BW, Bongaerts, P and Baldwin, CC (2017) High coral cover at lower mesophotic depths: a dense Agaricia community at the leeward side of Curaçao, Dutch Caribbean. Marine Biodiversity 47, 67–70.10.1007/s12526-015-0431-8Google Scholar
Kahng, SE, Copus, JM and Wagner, D (2014) Recent advances in the ecology of mesophotic coral ecosystems (MCEs). Current Opinion in Environmental Sustainability 7, 72–81.10.1016/j.cosust.2013.11.019Google Scholar
Kahng, SE, Garcia-Sais, JR, Spalding, HL, Brokovich, E, Wagner, D, Weil, E, Hinderstein, L and Toonen, RJ (2010) Community ecology of mesophotic coral reef ecosystems. Coral Reefs 29, 255–275.10.1007/s00338-010-0593-6Google Scholar
Kohler, KE and Gill, SM (2006) Coral Point Count with Excel extensions (CPCe): a Visual Basic program for the determination of coral and substrate coverage using random point count methodology. Computers and Geosciences 32, 1259–1269.Google Scholar
López-Legentil, S, Song, B, McMurray, SE and Pawlik, JR (2008) Bleaching and stress in coral reef ecosystems: hsp70 expression by the giant barrel sponge Xestospongia muta. Molecular Ecology 17, 1840–1849.10.1111/j.1365-294X.2008.03667.xGoogle Scholar
Marlow, J, Schönberg, CHL, Davy, SK, Haris, A, Jompa, J and Bell, JJ (2018) Bioeroding sponge assemblages: the importance of substrate availability and sediment. Journal of the Marine Biological Association of the United Kingdom. https://doi.org/10.1017/S0025315418000164.Google Scholar
McMellor, S and Smith, DJ (2010) Coral reefs of the Wakatobi: Abundance and biodiversity. In Clifton, J, Unsworth, RKF and Smith, DJ (eds), Marine Research and Conservation in the Coral Triangle: The Wakatobi National Park. New York, NY: Nova Publishers, pp. 11–26.Google Scholar
Powell, A, Smith, DJ, Hepburn, LJ, Jones, T, Berman, J and Bell, JJ (2014) Reduced diversity and high sponge abundance on a Sedimented Indo-Pacific Reef System: implications for future changes in environmental quality. PLoS ONE 9, e85253.Google Scholar
Rooney, J, Donham, E, Montgomery, A, Spalding, H, Parrish, F, Boland, R, Fenner, D, Gove, J and Vetter, O (2010) Mesophotic coral ecosystems in the Hawaiian Archipelago. Coral Reefs 29, 361–367.10.1007/s00338-010-0596-3Google Scholar