Coral carbonate-bound isotopes reveal monsoonal influence on nitrogen sources in Southeastern China's Greater Bay Area from the mid-Holocene until the Anthropocene
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
Author(s)
Detail(s)
Original language | English |
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Article number | 115757 |
Journal / Publication | Marine Pollution Bulletin |
Volume | 197 |
Online published | 21 Nov 2023 |
Publication status | Published - Dec 2023 |
Externally published | Yes |
Link(s)
DOI | DOI |
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Attachment(s) | Documents
Publisher's Copyright Statement
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Link to Scopus | https://www.scopus.com/record/display.uri?eid=2-s2.0-85179658679&origin=recordpage |
Permanent Link | https://scholars.cityu.edu.hk/en/publications/publication(f472aada-b847-46a4-afaa-32f338ecfe75).html |
Abstract
Most anthropogenic nitrogen (N) reaches coastal waters via rivers carrying increasing loads of sewage, fertilizer, and sediments. To understand anthropogenic N impacts, we need to understand historical N-dynamics before human influence. Stable isotope ratios of N preserved in carbonates are one way to create temporal N records. However, records that span periods of human occupation are scarce, limiting our ability to contextualize modern N dynamics. Here, we produce a fossil-bound N-record using coral subfossils, spanning 6700 years in China's Greater Bay Area (GBA). We found that during the mid-to-late Holocene, the GBA's coastal N was dominated by fluvial sources. The weakening of the Asia monsoon throughout the late-Holocene decreased river outflow, leading to a relative increase of marine nitrate. This source shift from riverine-to-ocean dominance was overprinted by anthropogenic N. During the late 1980s to early 1990s, human development and associated effluent inundated the coastal system, contributing to the decline of coral communities. © 2023 The Authors. Published by Elsevier Ltd.
Research Area(s)
- China's Greater Bay Area, Coral, Denitrifier method, Nitrogen, Stable-isotopes
Citation Format(s)
Coral carbonate-bound isotopes reveal monsoonal influence on nitrogen sources in Southeastern China's Greater Bay Area from the mid-Holocene until the Anthropocene. / Cybulski, Jonathan D.; Duprey, Nicolas N.; Thibodeau, Benoit et al.
In: Marine Pollution Bulletin, Vol. 197, 115757, 12.2023.
In: Marine Pollution Bulletin, Vol. 197, 115757, 12.2023.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
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