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A half-century record of coral skeletal P/Ca reveals late 20th century nutrient pollution in Port Dickson, Malaysia
Chen, M.; Chia, H.K.; Martin, P.; Lee, J.N.; Bettens, R.P.A.; Tanzil, J.T.I. (2022). A half-century record of coral skeletal P/Ca reveals late 20th century nutrient pollution in Port Dickson, Malaysia. Mar. Pollut. Bull. 181: 113875. https://dx.doi.org/10.1016/j.marpolbul.2022.113875
In: Marine Pollution Bulletin. Macmillan: London. ISSN 0025-326X; e-ISSN 1879-3363, meer
Peer reviewed article  
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Trefwoord
    Marien/Kust
Author keywords
    Nutrient pollution; Phosphate; Southeast Asia; Port Dickson; Coral; P; ca
Auteurs  Top 
  • Chen, M.
  • Chia, H.K.
  • Martin, P., meer
  • Lee, J.N.
  • Bettens, R.P.A.
  • Tanzil, J.T.I.
Abstract
    Anthropogenic nutrient pollution has been identified as one of the key stressors of coastal ecosystems. However, the paucity of long-term nutrient records limits our understanding of both the extent of nutrient pollution as well as of the ecological impacts. Here, using coral skeletal phosphorus (P/Ca), we reconstructed a half-a-century record of seawater phosphate at Port Dickson, Malaysia. The P/Ca in the coral revealed an up to 8-fold increase in coral P/Ca from the late 1970s to 2000s, likely linked to increases in fertilizer use (R2 = 0.47) and variabilities in rainfall (R2 = 0.17). The rise in coral P/Ca in coincided with a contemporaneous 18 % decrease in coral skeletal density, suggesting phosphate enrichment may impact the growth and structural integrity of reef-building corals. Given the importance of both agriculture and heavy reliance on coral reefs by populations in Southeast Asia, our study highlights continue the need to develop environmental management upstream of coastal zones.
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