Century-Long Records of Sedimentary Input on a Caribbean Reef From Coral Ba/Ca Ratios
Publication status: Published Funder: Leverhulme Trust Funder: Royal Society Wolfson Merit Funder: Belize Fisheries Department, Government of Belize <jats:title>Abstract</jats:title><jats:p>Coral reef ecosystems are delicately balanced and are thus prone to disruption by stressors...
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American Geophysical Union (AGU)
2024
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ftunivcam:oai:www.repository.cam.ac.uk:1810/368327 2024-06-23T07:55:54+00:00 Century-Long Records of Sedimentary Input on a Caribbean Reef From Coral Ba/Ca Ratios Shaw, KMM Standish, CD Fowell, SE Stewart, JA Castillo, KD Ries, JB Foster, GL 2024-05-15T12:58:01Z application/pdf text/xml https://www.repository.cam.ac.uk/handle/1810/368327 en eng eng American Geophysical Union (AGU) http://dx.doi.org/10.1029/2023pa004746 Paleoceanography and Paleoclimatology https://www.repository.cam.ac.uk/handle/1810/368327 37 Earth Sciences 3708 Oceanography 31 Biological Sciences 3103 Ecology 15 Life on Land Article 2024 ftunivcam 2024-06-04T23:55:34Z Publication status: Published Funder: Leverhulme Trust Funder: Royal Society Wolfson Merit Funder: Belize Fisheries Department, Government of Belize <jats:title>Abstract</jats:title><jats:p>Coral reef ecosystems are delicately balanced and are thus prone to disruption by stressors such as storms, disease, climate variability and natural disasters. Most tropical coral populations worldwide are now in rapid decline owing to additional anthropogenic pressures, such as global warming, ocean acidification and a variety of local stressors. One such problem is the addition of excess sediment and nutrients flux to reefs from increased soil erosion from land use changes. Here we present century‐long Ba/Ca records from two <jats:italic>Siderastrea siderea</jats:italic> colonies as a proxy for local riverine discharge and sediment flux to the southern Mesoamerican Barrier Reef System (MBRS). The coral colonies have linear extension trends, which can be seen as a first‐order indicator for coral health and response. The coral colony that exhibits a decline in linear extension rate from the forereef of the MBRS, mainly receives riverine input from Honduras, whilst the coral from the backreef, which does not exhibit a decline in extension rate, primarily receives riverine input from more sparsely populated regions of Belize. Coral Ba/Ca increased (>70%) through time in the forereef colony, while the backreef colony showed little long‐term increase in Ba/Ca over the last century. Our results suggest that increasing sediment supply may have played a role in the decline of forereef skeletal extension in the southernmost MBRS region, likely stemming from increasing land‐use changes in Honduras.</jats:p> Article in Journal/Newspaper Ocean acidification Apollo - University of Cambridge Repository |
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Open Polar |
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Apollo - University of Cambridge Repository |
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ftunivcam |
language |
English |
topic |
37 Earth Sciences 3708 Oceanography 31 Biological Sciences 3103 Ecology 15 Life on Land |
spellingShingle |
37 Earth Sciences 3708 Oceanography 31 Biological Sciences 3103 Ecology 15 Life on Land Shaw, KMM Standish, CD Fowell, SE Stewart, JA Castillo, KD Ries, JB Foster, GL Century-Long Records of Sedimentary Input on a Caribbean Reef From Coral Ba/Ca Ratios |
topic_facet |
37 Earth Sciences 3708 Oceanography 31 Biological Sciences 3103 Ecology 15 Life on Land |
description |
Publication status: Published Funder: Leverhulme Trust Funder: Royal Society Wolfson Merit Funder: Belize Fisheries Department, Government of Belize <jats:title>Abstract</jats:title><jats:p>Coral reef ecosystems are delicately balanced and are thus prone to disruption by stressors such as storms, disease, climate variability and natural disasters. Most tropical coral populations worldwide are now in rapid decline owing to additional anthropogenic pressures, such as global warming, ocean acidification and a variety of local stressors. One such problem is the addition of excess sediment and nutrients flux to reefs from increased soil erosion from land use changes. Here we present century‐long Ba/Ca records from two <jats:italic>Siderastrea siderea</jats:italic> colonies as a proxy for local riverine discharge and sediment flux to the southern Mesoamerican Barrier Reef System (MBRS). The coral colonies have linear extension trends, which can be seen as a first‐order indicator for coral health and response. The coral colony that exhibits a decline in linear extension rate from the forereef of the MBRS, mainly receives riverine input from Honduras, whilst the coral from the backreef, which does not exhibit a decline in extension rate, primarily receives riverine input from more sparsely populated regions of Belize. Coral Ba/Ca increased (>70%) through time in the forereef colony, while the backreef colony showed little long‐term increase in Ba/Ca over the last century. Our results suggest that increasing sediment supply may have played a role in the decline of forereef skeletal extension in the southernmost MBRS region, likely stemming from increasing land‐use changes in Honduras.</jats:p> |
format |
Article in Journal/Newspaper |
author |
Shaw, KMM Standish, CD Fowell, SE Stewart, JA Castillo, KD Ries, JB Foster, GL |
author_facet |
Shaw, KMM Standish, CD Fowell, SE Stewart, JA Castillo, KD Ries, JB Foster, GL |
author_sort |
Shaw, KMM |
title |
Century-Long Records of Sedimentary Input on a Caribbean Reef From Coral Ba/Ca Ratios |
title_short |
Century-Long Records of Sedimentary Input on a Caribbean Reef From Coral Ba/Ca Ratios |
title_full |
Century-Long Records of Sedimentary Input on a Caribbean Reef From Coral Ba/Ca Ratios |
title_fullStr |
Century-Long Records of Sedimentary Input on a Caribbean Reef From Coral Ba/Ca Ratios |
title_full_unstemmed |
Century-Long Records of Sedimentary Input on a Caribbean Reef From Coral Ba/Ca Ratios |
title_sort |
century-long records of sedimentary input on a caribbean reef from coral ba/ca ratios |
publisher |
American Geophysical Union (AGU) |
publishDate |
2024 |
url |
https://www.repository.cam.ac.uk/handle/1810/368327 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
https://www.repository.cam.ac.uk/handle/1810/368327 |
_version_ |
1802648691398410240 |