Megacity development and the demise of coastal coral communities: Evidence from coral skeleton δ15N records in the Pearl River estuary

  title={Megacity development and the demise of coastal coral communities: Evidence from coral skeleton $\delta$15N records in the Pearl River estuary},
  author={Nicolas N. Duprey and Tony X. Wang and Taihun Kim and Jonathan D. Cybulski and Hubert B. Vonhof and Paul J. Crutzen and Gerald H. Haug and Daniel M. Sigman and Alfredo Mart{\'i}nez‐Garc{\'i}a and David M. Baker},
  journal={Global Change Biology},
  pages={1338 - 1353}
Historical coral skeleton (CS) δ18O and δ15N records were produced from samples recovered from sedimentary deposits, held in natural history museum collections, and cored into modern coral heads. These records were used to assess the influence of global warming and regional eutrophication, respectively, on the decline of coastal coral communities following the development of the Pearl River Delta (PRD) megacity, China. We find that, until 2007, ocean warming was not a major threat to coral… 
Coral reef diversity losses in China’s Greater Bay Area were driven by regional stressors
Poor water quality driven by increased nutrients is the main cause of coral diversity loss in southern China’s Greater Bay Area and a 40% decrease in generic diversity is revealed, concomitant to a shift from competitive to stress-tolerant species dominance since the mid-Holocene.
Stable nitrogen isotopes in octocorals as an indicator of water quality decline from the northwestern region of Cuba
The δ 15 N of the two species and microbiological and physical-chemical variables evidenced water quality decline by sewage discharge that reached reefs near polluted watersheds.
Ontogenetic δ15N Trends and Multidecadal Variability in Shells of the Bivalve Mollusk, Arctica islandica
Bulk stable nitrogen isotope values of the carbonate-bound organic matrix in bivalve shells (δ15NCBOM) are increasingly used to assess past food web dynamics, track anthropogenic nitrogen pollution
Environmental records from coral skeletons: A decade of novel insights and innovation
  • D. Thompson
  • Environmental Science, Geography
    WIREs Climate Change
  • 2021
Hundreds of coral paleoclimate records have been developed over the past several decades, significantly extending the instrumental record and improving our understanding of tropical climate
Light Limitation and Depth-Variable Sedimentation Drives Vertical Reef Compression on Turbid Coral Reefs
Turbid coral reefs experience high suspended sediment loads and low-light conditions that vertically compress the maximum depth of reef growth. Although vertical reef compression is hypothesized to
The war of corals: patterns, drivers and implications of changing coral competitive performances across reef environments
The empirical approach untangles the complexity of species’ battle-like interactions and can help identify winners and losers in various communities caught in the interplay between ecological niches, environmental windows, and global changes.
Changes in Coral Skeleton Growth Recorded by Density Band Stratigraphy, Crystalline Structure, and Hiatuses
Next-generation high resolution brightfield microscopy, x-radiography, and microcomputed tomography (microCT) analyses indicate that coral skeleton high density band (HDB) and low density band (LDB)
Environmental flexibility in Oulastrea crispata in a highly urbanised environment: a microbial perspective
Flexibility in the microbiome does not appear to underpin the robustness of this broadly distributed coral, and the observed structural complexity of the microbiome appears to be relatively conserved across the environmental gradient even at sites where no other hard coral can survive.
Benthic ostracod diversity and biogeography in an urbanized seascape


Life and death of a sewage treatment plant recorded in a coral skeleton δ15N record.
New Insights on the Nitrogen Footprint of a Coastal Megalopolis from Coral-Hosted Symbiodinium δ15N.
The results revealed the value of benthic marine organisms' δ15N for deciphering the complex dynamics of coastal eutrophication and highlighted the pivotal role of transboundary coordination in DIN-pollution mitigation.
Influence of open ocean nitrogen supply on the skeletal δ15N of modern shallow-water scleractinian corals
Nitrogen‐stable isotope signatures in estuarine food webs: A record of increasing urbanization in coastal watersheds
Nutrient enrichment as a result of anthropogenic activity concentrated along the land‐sea margin is increasing eutrophication of near‐shore waters across the globe. Management of eutrophication in
Isotopic evidence for the turnover of biological reactive nitrogen in the Pearl River Estuary, south China
Nitrate (NO3−) concentrations and the isotopic composition (δ15N and δ18O) of water samples from the Pearl River Estuary (PRE), south China, were measured to constrain N sources and processing in
Reefs of tomorrow: eutrophication reduces coral biodiversity in an urbanized seascape
The importance of nutrients over other water quality parameters in coral biodiversity loss is demonstrated and highlights the key role of eutrophication in shaping coastal coral reef ecosystems.
Evidence of Large-Scale Chronic Eutrophication in the Great Barrier Reef: Quantification of Chlorophyll a Thresholds for Sustaining Coral Reef Communities
Some reefs in the far northern GBR where the annual mean chlorophyll a (Chl a) is in the lower range of the proposed Eutrophication Threshold Concentration for Chl a show little or no evidence of degradation over the past century, however, the available evidence suggests that coral diseases and the crown-of-thorns starfish will proliferate in such waters and hence the mandated eUTrophication Trigger values for ChL a will need to be decreased.
21st-century rise in anthropogenic nitrogen deposition on a remote coral reef
In a coral core from Dongsha Atoll, a remote coral reef ecosystem, a decline in the 15N/14N of coral skeleton–bound organic matter is observed, which signals increased deposition of anthropogenic atmospheric N on the open ocean and its incorporation into plankton and, in turn, the atoll corals.