Seasonal growth and calcification of a reef-building crustose coralline alga on the Great Barrier Reef
Crustose coralline algae (CCA) play a central role in tropical reef ecology, helping to build and stabilise the reef framework and, due to their high Mg-calcite skeleton, are potential indicators for assessing the impacts of ocean acidification. However, basic information on CCA seasonal growth and...
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ftgriffithuniv:oai:research-repository.griffith.edu.au:10072/346292 2023-12-03T10:28:22+01:00 Seasonal growth and calcification of a reef-building crustose coralline alga on the Great Barrier Reef Lewis, Bonnie Kennedy, Emma V Diaz-Pulido, Guillermo 2017 http://hdl.handle.net/10072/346292 https://doi.org/10.3354/meps12074 English eng eng Inter-Research Marine Ecology Progress Series http://hdl.handle.net/10072/346292 0171-8630 doi:10.3354/meps12074 © 2017 Inter Research. The attached file is reproduced here in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version. open access Oceanography Ecology Marine and estuarine ecology (incl. marine ichthyology) Zoology Ecological applications Journal article 2017 ftgriffithuniv https://doi.org/10.3354/meps12074 2023-11-06T23:27:53Z Crustose coralline algae (CCA) play a central role in tropical reef ecology, helping to build and stabilise the reef framework and, due to their high Mg-calcite skeleton, are potential indicators for assessing the impacts of ocean acidification. However, basic information on CCA seasonal growth and calcification is relatively unknown on the Great Barrier Reef (GBR). This study provides seasonal baseline rates of vertical growth, marginal (horizontal) growth and calcification of the abundant CCA species Porolithon onkodes, together with the effect of reduced irradiance on these metrics to better understand the natural variability between CCA living in exposed and shaded areas. Seasonal variation was detected in each of the metrics, with maximum vertical growth and calcification observed in spring and marginal extension in autumn. Annual vertical growth rate was 1.45 mm yr-1, absolute marginal growth rate (surface area) was 11.12 cm2 yr-1, and absolute marginal extension rate (diameter) was 24.66 mm yr-1. Net calcification, determined using the buoyant weight method (includes secondary calcification deposits) was approximately 2.72 to 3.40 g CaCO3 cm-2 yr-1, while gross calcification determined using growth metrics (just newly deposited CaCO3) was 0.43 to 0.59 g CaCO3 cm-2 yr-1. Shaded treatments yielded higher growth and gross calcification rates compared to exposed in all seasons except summer. This data provides empirical information necessary to monitor the impacts of future climate change on the GBR and to better understand the response of CCA to manipulative experiments on ocean acidification and warming. Griffith Sciences, Griffith School of Environment Full Text Article in Journal/Newspaper Ocean acidification Griffith University: Griffith Research Online Griffith ENVELOPE(-155.500,-155.500,-85.883,-85.883) Marine Ecology Progress Series 568 73 86 |
institution |
Open Polar |
collection |
Griffith University: Griffith Research Online |
op_collection_id |
ftgriffithuniv |
language |
English |
topic |
Oceanography Ecology Marine and estuarine ecology (incl. marine ichthyology) Zoology Ecological applications |
spellingShingle |
Oceanography Ecology Marine and estuarine ecology (incl. marine ichthyology) Zoology Ecological applications Lewis, Bonnie Kennedy, Emma V Diaz-Pulido, Guillermo Seasonal growth and calcification of a reef-building crustose coralline alga on the Great Barrier Reef |
topic_facet |
Oceanography Ecology Marine and estuarine ecology (incl. marine ichthyology) Zoology Ecological applications |
description |
Crustose coralline algae (CCA) play a central role in tropical reef ecology, helping to build and stabilise the reef framework and, due to their high Mg-calcite skeleton, are potential indicators for assessing the impacts of ocean acidification. However, basic information on CCA seasonal growth and calcification is relatively unknown on the Great Barrier Reef (GBR). This study provides seasonal baseline rates of vertical growth, marginal (horizontal) growth and calcification of the abundant CCA species Porolithon onkodes, together with the effect of reduced irradiance on these metrics to better understand the natural variability between CCA living in exposed and shaded areas. Seasonal variation was detected in each of the metrics, with maximum vertical growth and calcification observed in spring and marginal extension in autumn. Annual vertical growth rate was 1.45 mm yr-1, absolute marginal growth rate (surface area) was 11.12 cm2 yr-1, and absolute marginal extension rate (diameter) was 24.66 mm yr-1. Net calcification, determined using the buoyant weight method (includes secondary calcification deposits) was approximately 2.72 to 3.40 g CaCO3 cm-2 yr-1, while gross calcification determined using growth metrics (just newly deposited CaCO3) was 0.43 to 0.59 g CaCO3 cm-2 yr-1. Shaded treatments yielded higher growth and gross calcification rates compared to exposed in all seasons except summer. This data provides empirical information necessary to monitor the impacts of future climate change on the GBR and to better understand the response of CCA to manipulative experiments on ocean acidification and warming. Griffith Sciences, Griffith School of Environment Full Text |
format |
Article in Journal/Newspaper |
author |
Lewis, Bonnie Kennedy, Emma V Diaz-Pulido, Guillermo |
author_facet |
Lewis, Bonnie Kennedy, Emma V Diaz-Pulido, Guillermo |
author_sort |
Lewis, Bonnie |
title |
Seasonal growth and calcification of a reef-building crustose coralline alga on the Great Barrier Reef |
title_short |
Seasonal growth and calcification of a reef-building crustose coralline alga on the Great Barrier Reef |
title_full |
Seasonal growth and calcification of a reef-building crustose coralline alga on the Great Barrier Reef |
title_fullStr |
Seasonal growth and calcification of a reef-building crustose coralline alga on the Great Barrier Reef |
title_full_unstemmed |
Seasonal growth and calcification of a reef-building crustose coralline alga on the Great Barrier Reef |
title_sort |
seasonal growth and calcification of a reef-building crustose coralline alga on the great barrier reef |
publisher |
Inter-Research |
publishDate |
2017 |
url |
http://hdl.handle.net/10072/346292 https://doi.org/10.3354/meps12074 |
long_lat |
ENVELOPE(-155.500,-155.500,-85.883,-85.883) |
geographic |
Griffith |
geographic_facet |
Griffith |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
Marine Ecology Progress Series http://hdl.handle.net/10072/346292 0171-8630 doi:10.3354/meps12074 |
op_rights |
© 2017 Inter Research. The attached file is reproduced here in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version. open access |
op_doi |
https://doi.org/10.3354/meps12074 |
container_title |
Marine Ecology Progress Series |
container_volume |
568 |
container_start_page |
73 |
op_container_end_page |
86 |
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1784252971750522880 |