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WAMSI 2 DSN 4.7 Coral Demography

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About this Collection

WAMSI 2 DSN 4.7 Coral Demography


In April 2014 and March 2015 surveys of coral populations were undertaken at Enderby and West Lewis Islands in the Dampier Archipelago, Western Australia. The corals investigated in this study were Acropora millepora, Turbinaria mesenterina and massive Porites spp. (mainly P. lobata and P. lutea). For each species, population size-frequency distrib... more


Conservation and Biodiversity Ecological Impacts of Climate Change Ecology not elsewhere classified Invertebrate Biology Wildlife and Habitat Management


https://doi.org/10.4225/08/5b379b2652ef4


20 Apr 2014


30 Jun 2015


Russ Babcock
Russ.Babcock@csiro.au

coral population dynamics impacts recovery demographic processes Dampier


Four permanent transects (30 m in length) were established at West Lewis Island, and two at Enderby Island between 20-30 May 2014. The start and finish points of transects were marked with a star picket and at 5 m intervals with steel reinforcing rod. The position of all star pickets were recorded using a hand-held GPS. Along each permanent transect, benthic photographs were taken to quantify the percentage cover of coral assemblages as well as other benthic substrata. Photographs were taken at a distance of approximately 50 cm from the substratum and spaced every 50 cm on each side of the permanent transects. Percentage cover was quantified by classifying the benthos beneath 6 fixed points on each image (300 points per transect) using the software package Transect Measure (V 2.41 http://www.seagis.com.au/transect.htm). For each species, population size-frequency distributions were obtained by recording the size of all colonies within a one metre distance on either side of permanent transects (60 m2). Using the permanent transect as a reference point, the locations of all tagged colonies were recorded, tagged, measured and photographed. Tagged colonies were re-located and re-measured approximately one year later. A total of 737 corals were examined; 473 corals from Enderby Island and 264 from West Lewis Islands. Similar numbers of massive Porites (279), T. mesenterina (229) and A. millepora (272) colonies were tagged. Of the colonies tagged 733 corals were re-located a year later and assessed for survival, growth, partial mortality and fission. Refer to the full report for further details.


Russ Babcock (CSIRO); Damian Thomson (CSIRO); James Gilmour (AIMS); Western Australian Marine Science Institution (WAMSI)


Creative Commons Attribution 4.0 International Licence


Australian Institute of Marines Sciences (Australia), CSIRO (Australia), Western Australian Marine Science Institution (WAMSI) (Australia)


Babcock, Russ; Thomson, Damian; Gilmour, James (2017): WAMSI 2 DSN 4.7 Coral Demography. v2. CSIRO. Data Collection. https://doi.org/10.4225/08/5b379b2652ef4


All Rights (including copyright) CSIRO 2017.


Although the associated metadata is public, the files (if any) have not been approved for general release. Please phone or email the contact person for this collection to discuss access to the files.

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Location Details

20°33′0″ S


20°35′24″ S


116°38′24″ E


116°32′60″ E


WGS84


About this Project

WAMSI-Dredg T4 Coral response


An understanding of coral population dynamics (demography) is needed when designing and evaluating studies that aim to detect the effects of natural and anthropogenic mediated impacts on coral communities, and in particular when making predictions about the likelihood of and speed of recovery from such impacts. This study was undertaken to gather b... more


Russ Babcock


Demographic processes in corals of Dampier Archipelago


In April 2014 and March 2015 surveys of coral populations were undertaken at Enderby and West Lewis Islands in the Dampier Archipelago, Western Australia. The corals investigated in this study were Acropora millepora, Turbinaria mesenterina and massive Porites spp. (mainly P. lobata and P. lutea).For each species, population size-frequency distribu... more


Measurement


underwater permanent transects


Russ Babcock


Damian Thomson


James Gilmour


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