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Coral Skeletal Luminescence Records Changes in Terrestrial Chromophoric Dissolved Organic Matter in Tropical Coastal Waters

t Terrigenous dissolved organic matter (tDOM) carried by rivers represents an important carbon flux to the coastal ocean, which is thought to be increasing globally. Because tDOM is rich in lightabsorbent chromophoric dissolved organic matter (CDOM), it may also reduce the amount of sunlight avail...

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Main Authors: Kaushal, Nikita, Sanwlani, Nivedita, Tanzil, Jani T. I., Cherukuru, Nagur, Sahar, Syamil, Müller, Moritz, Aazani, Mujahid, Lee, Jen N., Goodkin, Nathalie F., Martin, Patrick
Format: Article
Language:English
Published: 2021
Subjects:
Q Science (General)
Online Access:http://ir.unimas.my/id/eprint/37768/1/Coral%20Skeletal%20Luminescence%20Records%20Changes%20in.pdf
http://ir.unimas.my/id/eprint/37768/
https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2020GL092130
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spelling my.unimas.ir.377682022-01-19T01:37:31Z http://ir.unimas.my/id/eprint/37768/ Coral Skeletal Luminescence Records Changes in Terrestrial Chromophoric Dissolved Organic Matter in Tropical Coastal Waters Kaushal, Nikita Sanwlani, Nivedita Tanzil, Jani T. I. Cherukuru, Nagur Sahar, Syamil Müller, Moritz Aazani, Mujahid Lee, Jen N. Goodkin, Nathalie F. Martin, Patrick Q Science (General) t Terrigenous dissolved organic matter (tDOM) carried by rivers represents an important carbon flux to the coastal ocean, which is thought to be increasing globally. Because tDOM is rich in lightabsorbent chromophoric dissolved organic matter (CDOM), it may also reduce the amount of sunlight available in coastal ecosystems. Despite its biogeochemical and ecological significance, there are few long-term records of tDOM, hindering our understanding of its drivers and dynamics. Corals incorporate terrestrial humic acids, an important constituent of CDOM, resulting in luminescent bands that have been previously linked to rainfall and run-off. We show that luminescence green-to-blue (G/B) ratios in a coral core growing in waters affected by peatland run-off correlate strongly with remote sensing-derived CDOM absorption. The 24-year monthly resolution reconstructed record shows that rainfall controls landto-ocean tDOM flux from this protected peatland catchment, and suggests an additional impact by solar radiation, which degrades tDOM at sea. 2021 Article PeerReviewed text en http://ir.unimas.my/id/eprint/37768/1/Coral%20Skeletal%20Luminescence%20Records%20Changes%20in.pdf Kaushal, Nikita and Sanwlani, Nivedita and Tanzil, Jani T. I. and Cherukuru, Nagur and Sahar, Syamil and Müller, Moritz and Aazani, Mujahid and Lee, Jen N. and Goodkin, Nathalie F. and Martin, Patrick (2021) Coral Skeletal Luminescence Records Changes in Terrestrial Chromophoric Dissolved Organic Matter in Tropical Coastal Waters. Geophysical Research Letters, 48 (8). pp. 1-12. https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2020GL092130 10.1029/2020GL092130
institution Universiti Malaysia Sarawak
building Centre for Academic Information Services (CAIS)
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Sarawak
content_source UNIMAS Institutional Repository
url_provider http://ir.unimas.my/
language English
topic Q Science (General)
spellingShingle Q Science (General)
Kaushal, Nikita
Sanwlani, Nivedita
Tanzil, Jani T. I.
Cherukuru, Nagur
Sahar, Syamil
Müller, Moritz
Aazani, Mujahid
Lee, Jen N.
Goodkin, Nathalie F.
Martin, Patrick
Coral Skeletal Luminescence Records Changes in Terrestrial Chromophoric Dissolved Organic Matter in Tropical Coastal Waters
description t Terrigenous dissolved organic matter (tDOM) carried by rivers represents an important carbon flux to the coastal ocean, which is thought to be increasing globally. Because tDOM is rich in lightabsorbent chromophoric dissolved organic matter (CDOM), it may also reduce the amount of sunlight available in coastal ecosystems. Despite its biogeochemical and ecological significance, there are few long-term records of tDOM, hindering our understanding of its drivers and dynamics. Corals incorporate terrestrial humic acids, an important constituent of CDOM, resulting in luminescent bands that have been previously linked to rainfall and run-off. We show that luminescence green-to-blue (G/B) ratios in a coral core growing in waters affected by peatland run-off correlate strongly with remote sensing-derived CDOM absorption. The 24-year monthly resolution reconstructed record shows that rainfall controls landto-ocean tDOM flux from this protected peatland catchment, and suggests an additional impact by solar radiation, which degrades tDOM at sea.
format Article
author Kaushal, Nikita
Sanwlani, Nivedita
Tanzil, Jani T. I.
Cherukuru, Nagur
Sahar, Syamil
Müller, Moritz
Aazani, Mujahid
Lee, Jen N.
Goodkin, Nathalie F.
Martin, Patrick
author_facet Kaushal, Nikita
Sanwlani, Nivedita
Tanzil, Jani T. I.
Cherukuru, Nagur
Sahar, Syamil
Müller, Moritz
Aazani, Mujahid
Lee, Jen N.
Goodkin, Nathalie F.
Martin, Patrick
author_sort Kaushal, Nikita
title Coral Skeletal Luminescence Records Changes in Terrestrial Chromophoric Dissolved Organic Matter in Tropical Coastal Waters
title_short Coral Skeletal Luminescence Records Changes in Terrestrial Chromophoric Dissolved Organic Matter in Tropical Coastal Waters
title_full Coral Skeletal Luminescence Records Changes in Terrestrial Chromophoric Dissolved Organic Matter in Tropical Coastal Waters
title_fullStr Coral Skeletal Luminescence Records Changes in Terrestrial Chromophoric Dissolved Organic Matter in Tropical Coastal Waters
title_full_unstemmed Coral Skeletal Luminescence Records Changes in Terrestrial Chromophoric Dissolved Organic Matter in Tropical Coastal Waters
title_sort coral skeletal luminescence records changes in terrestrial chromophoric dissolved organic matter in tropical coastal waters
publishDate 2021
url http://ir.unimas.my/id/eprint/37768/1/Coral%20Skeletal%20Luminescence%20Records%20Changes%20in.pdf
http://ir.unimas.my/id/eprint/37768/
https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2020GL092130
_version_ 1724078559392169984
score 13.211869

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