Laverick et al. 2016

scientific review | Environmental Evidence | open access Open access small aa108fa7f478951c693af64a05bc4b46e6711dbb69a20809512a129d4d6b870f

To what extent do mesophotic coral ecosystems and shallow reefs share species of conservation interest?

Laverick JH, Andradi-Brown DA, Exton DA, Bongaerts P, Bridge TC, Lesser MP, Pyle RL, Slattery M, Wagner D, Rogers AD

Adobe pdf ff6e8bea21f0598930b59d2452bacbad49a13eb0fa773865059b4c2ed088a358
Www fec836ca290318f37dc3ecd481f22b98faf488d5ddef687807ca6b76d8e893ed
Gscholar 58dd9f05df3b8d1811d087e8507325500777053d6677b471fd75373a30a4cee1

Background: Mesophotic coral ecosystems (MCEs) are tropical and sub-tropical reefs between 30 m and poten‑ tially >150 m depth, the maximum for photosynthetic hard corals. The definition’s upper boundary is ecologically arbitrary. Recently, research has focused on the deep reef refugia hypothesis suggesting MCEs can be protected from shallow-water threats, potentially acting as a local source for re-colonisation of shallow reefs. This led to recent calls to increase their protection. It remains unclear whether the current MCE definition reflects changing biodiversity with depth, and so whether protecting MCEs based on this definition will protect shallow reef species. We ask where shifts in ecological community structure occur across the shallow-mesophotic depth gradient. We consider to what extent MCEs as currently defined protect shallow reef taxa. Research on coral reef depth gradients has a long history. Research relevant to MCEs has been published under a variety of terms. We will use the systematic review framework to collect older data sources, increasing accessibility by depositing the meta-data in an online library for researchers and managers. Methods: A systematic review will be conducted, searching online databases, grey literature and personal libraries of experts. The primary question was formulated after consulting an advisory committee. Inclusion criteria discrimi‑ nate among studies by sampling depths and community data. Critical appraisal of studies will consider key criteria concerning internal validity. We shall identify where more biodiversity and community-level data are required, deter‑ mined by whether a meta-analysis is possible. Considering how to structure a meta-analysis once community metric and variability data have been collected will help to advise future data collection. Provided enough data are extracted, we shall conduct a meta-analysis examining changes in species richness, abundance and biomass across the depth gradient. If ecological community level data are present, we shall conduct an additional meta-analysis looking at com‑ munity turnover with depth.

10.1186   s13750 016 0068 5
Meta-data (pending validation)
Depth range
30- 150 m

Mesophotic “mentions”
72 x (total of 4081 words)

Biodiversity Ecology Community structure Connectivity

Research focus
Scleractinia (Hard Corals)
Author profiles
Jack Laverick ( 3 pubs)
Dominic Andradi-Brown ( 8 pubs)
Pim Bongaerts ( 25 pubs)
Tom (Thomas) Bridge ( 18 pubs)
Michael P. Lesser ( 14 pubs)
Richard Pyle ( 16 pubs)
Marc Slattery ( 11 pubs)
Daniel Wagner ( 21 pubs)