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Long-term climate-associated dynamics of a tropical seagrass meadow: implications for the future

MA Rasheed, RKF Unsworth, Richard Unsworth Orcid Logo

Marine Ecology Progress Series, Volume: 422, Pages: 93 - 103

Swansea University Author: Richard Unsworth Orcid Logo

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DOI (Published version): 10.3354/meps08925

Abstract

The long-term changes of tropical intertidal seagrass, mainly Halodule uninervis and Halophila ovalis meadows and their relationship to climate are poorly documented. Developing a greater understanding of the effects of climate on seagrass meadows is critical for estimating the effects of future cli...

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Published in: Marine Ecology Progress Series
ISSN: 0171-8630 1616-1599
Published: 2011
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URI: https://cronfa.swan.ac.uk/Record/cronfa6755
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first_indexed 2013-07-23T11:55:23Z
last_indexed 2018-02-09T04:34:16Z
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spelling 2017-12-18T11:54:47.3764689 v2 6755 2012-01-23 Long-term climate-associated dynamics of a tropical seagrass meadow: implications for the future b0f33acd13a3ab541cf2aaea27f4fc2f 0000-0003-0036-9724 Richard Unsworth Richard Unsworth true false 2012-01-23 SBI The long-term changes of tropical intertidal seagrass, mainly Halodule uninervis and Halophila ovalis meadows and their relationship to climate are poorly documented. Developing a greater understanding of the effects of climate on seagrass meadows is critical for estimating the effects of future climate change scenarios. Here we document the temporal dynamics of coastal intertidal seagrass in tropical northeast Australia over 16 yr of detailed monitoring. This study is the first to directly relate such change to long-term climate variability in the Indo-Pacific region and southern hemisphere. Regression modelling was used to relate seagrass biomass and meadow area measurements to climate data. The aboveground biomass and area of the meadow were correlated with the interacting factors of air temperature, precipitation, daytime tidal exposure and freshwater runoff from nearby rivers. Elevated temperature and reduced flow from rivers were significantly correlated (R2 = 0.6, p < 0.001) with periods of lower seagrass biomass. Results of this study have important implications for the long-term viability of seagrasses with regard to climate change scenarios. Modelling of our findings indicates that future higher temperatures could be detrimental to Indo-Pacific intertidal, coastal and estuarine seagrass meadows. Journal Article Marine Ecology Progress Series 422 93 103 0171-8630 1616-1599 31 12 2011 2011-12-31 10.3354/meps08925 COLLEGE NANME Biosciences COLLEGE CODE SBI Swansea University 2017-12-18T11:54:47.3764689 2012-01-23T16:48:38.6500000 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Biosciences MA Rasheed 1 RKF Unsworth 2 Richard Unsworth 0000-0003-0036-9724 3
title Long-term climate-associated dynamics of a tropical seagrass meadow: implications for the future
spellingShingle Long-term climate-associated dynamics of a tropical seagrass meadow: implications for the future
Richard Unsworth
title_short Long-term climate-associated dynamics of a tropical seagrass meadow: implications for the future
title_full Long-term climate-associated dynamics of a tropical seagrass meadow: implications for the future
title_fullStr Long-term climate-associated dynamics of a tropical seagrass meadow: implications for the future
title_full_unstemmed Long-term climate-associated dynamics of a tropical seagrass meadow: implications for the future
title_sort Long-term climate-associated dynamics of a tropical seagrass meadow: implications for the future
author_id_str_mv b0f33acd13a3ab541cf2aaea27f4fc2f
author_id_fullname_str_mv b0f33acd13a3ab541cf2aaea27f4fc2f_***_Richard Unsworth
author Richard Unsworth
author2 MA Rasheed
RKF Unsworth
Richard Unsworth
format Journal article
container_title Marine Ecology Progress Series
container_volume 422
container_start_page 93
publishDate 2011
institution Swansea University
issn 0171-8630
1616-1599
doi_str_mv 10.3354/meps08925
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Biosciences{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Biosciences
document_store_str 0
active_str 0
description The long-term changes of tropical intertidal seagrass, mainly Halodule uninervis and Halophila ovalis meadows and their relationship to climate are poorly documented. Developing a greater understanding of the effects of climate on seagrass meadows is critical for estimating the effects of future climate change scenarios. Here we document the temporal dynamics of coastal intertidal seagrass in tropical northeast Australia over 16 yr of detailed monitoring. This study is the first to directly relate such change to long-term climate variability in the Indo-Pacific region and southern hemisphere. Regression modelling was used to relate seagrass biomass and meadow area measurements to climate data. The aboveground biomass and area of the meadow were correlated with the interacting factors of air temperature, precipitation, daytime tidal exposure and freshwater runoff from nearby rivers. Elevated temperature and reduced flow from rivers were significantly correlated (R2 = 0.6, p < 0.001) with periods of lower seagrass biomass. Results of this study have important implications for the long-term viability of seagrasses with regard to climate change scenarios. Modelling of our findings indicates that future higher temperatures could be detrimental to Indo-Pacific intertidal, coastal and estuarine seagrass meadows.
published_date 2011-12-31T03:08:19Z
_version_ 1763749815347314688
score 11.014537

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