Metal contents of Porites corals from Khang Khao Island, Gulf of Thailand: Anthropogenic input of river runoff into a coral reef from urbanized areas, Bangkok

Tanaka, Kentaro; Ohde, Shigeru; Cohen, Michael D.; Snidvongs, Anond; Ganmanee, Monthon; McLeod, Cameron W.

doi:10.1016/j.apgeochem.2013.07.005

Cited by 31 publications

(11 citation statements)

References 53 publications

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“…They enter the marine environment in various ways, including as agricultural and urban stormwater runoff, industrial effluents, sewage treatment discharge, and through fossil fuel combustion (Davis et al, 2001;Flint and Davis, 2007;Pan and Wang, 2012). Disposal of dredged spoil, ash, and antifouling paints for marine vessels and structures also contribute substantially to the heavy metal contamination of the oceans (Tanaka et al, 2013). Since heavy metals cannot be degraded by chemical or biological processes, they often accumulate up to high levels in sediments, acting as a sink.…”

Section: Introductionmentioning

confidence: 99%

The Combined Effects of Ocean Acidification and Heavy Metals on Marine Organisms: A Meta-Analysis

et al. 2021

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Ocean acidification (OA) may interact with anthropogenic pollutants, such as heavy metals (HM), to represent a threat to marine organisms and ecosystems. Here, we perform a quantitative meta-analysis to examine the combined effects of OA and heavy metals on marine organisms. The results reveal predominantly additive interactions (67%), with a considerable proportion of synergistic interactions (25%) and a few antagonistic interactions (8%). The overall adverse effects of heavy metals on marine organisms were alleviated by OA, leading to a neutral impact of heavy metals in combination with OA. However, different taxonomic groups showed large variabilities in their responses, with microalgae being the most sensitive when exposed to heavy metals and OA, and having the highest proportion of antagonistic interactions. Furthermore, the variations in interaction type frequencies are related to climate regions and heavy metal properties, with antagonistic interactions accounting for the highest proportion in temperate regions (28%) and when exposed to Zn (52%). Our study provides a comprehensive insight into the interactive effects of OA and HM on marine organisms, and highlights the importance of further investigating the responses of different marine taxonomic groups from various geographic locations to the combined stress of OA and HM.

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Section: Introductionmentioning

confidence: 99%

The Combined Effects of Ocean Acidification and Heavy Metals on Marine Organisms: A Meta-Analysis

et al. 2021

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“…Land-based inputs of freshwater are substantial sources of nutrients, organic matter (OM) and pollutants to coastal reefs (Fabricius, 2005;Tanaka et al, 2013;Lubarsky et al, 2018). Among these freshwater inputs, submarine groundwater discharge (SGD) has an important contribution, especially in tropical islands, where it can supply large amounts of terrestrialderived nutrients to reef waters (Lewis, 1987;Paytan et al, 2006;Kim et al, 2011;Moosdorf et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Influence of Freshwater Discharges on Biogeochemistry and Benthic Communities of a Coral Reef Ecosystem (La Réunion Island, Indian Ocean)

et al. 2020

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“…Major inputs of heavy metals to the marine environment include urban storm water run-off, industrial effluents, mining operations, and atmospheric contaminants in both particulate and dissolved forms [ 3 ]. Furthermore, motor vehicle emissions, disposal of sewage sludge, dredged spoil, ash and antifouling paints for marine vessels and structures also yield appreciable concentrations of heavy metals to the ocean [ 2 , 4 , 5 ]. Metal pollution affects many reefs worldwide ( e .…”

Section: Introductionmentioning

confidence: 99%

“…g . Costa Rica, Panama, Red Sea, Thailand, Tuvalu, Puerto Rico) [ 5 – 9 ]. Among them, coral reefs of New Caledonia (Pacific Ocean) are particularly concerned by this issue.…”

Section: Introductionmentioning

confidence: 99%

Responses of Two Scleractinian Corals to Cobalt Pollution and Ocean Acidification

Biscéré

Rodolfo‐Metalpa

Lorrain³

et al. 2015

PLoS ONE

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The effects of ocean acidification alone or in combination with warming on coral metabolism have been extensively investigated, whereas none of these studies consider that most coral reefs near shore are already impacted by other natural anthropogenic inputs such as metal pollution. It is likely that projected ocean acidification levels will aggravate coral reef health. We first investigated how ocean acidification interacts with one near shore locally abundant metal on the physiology of two major reef-building corals: Stylophora pistillata and Acropora muricata. Two pH levels (pHT 8.02; pCO2 366 μatm and pHT 7.75; pCO2 1140 μatm) and two cobalt concentrations (natural, 0.03 μg L-1 and polluted, 0.2 μg L-1) were tested during five weeks in aquaria. We found that, for both species, cobalt input decreased significantly their growth rates by 28% while it stimulated their photosystem II, with higher values of rETRmax (relative Electron Transport Rate). Elevated pCO2 levels acted differently on the coral rETRmax values and did not affect their growth rates. No consistent interaction was found between pCO2 levels and cobalt concentrations. We also measured in situ the effect of higher cobalt concentrations (1.06 ± 0.16 μg L-1) on A. muricata using benthic chamber experiments. At this elevated concentration, cobalt decreased simultaneously coral growth and photosynthetic rates, indicating that the toxic threshold for this pollutant has been reached for both host cells and zooxanthellae. Our results from both aquaria and in situ experiments, suggest that these coral species are not particularly sensitive to high pCO2 conditions but they are to ecologically relevant cobalt concentrations. Our study reveals that some reefs may be yet subjected to deleterious pollution levels, and even if no interaction between pCO2 levels and cobalt concentration has been found, it is likely that coral metabolism will be weakened if they are subjected to additional threats such as temperature increase, other heavy metals, and eutrophication.

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Metal contents of Porites corals from Khang Khao Island, Gulf of Thailand: Anthropogenic input of river runoff into a coral reef from urbanized areas, Bangkok

Cited by 31 publications

References 53 publications

The Combined Effects of Ocean Acidification and Heavy Metals on Marine Organisms: A Meta-Analysis

The Combined Effects of Ocean Acidification and Heavy Metals on Marine Organisms: A Meta-Analysis

Influence of Freshwater Discharges on Biogeochemistry and Benthic Communities of a Coral Reef Ecosystem (La Réunion Island, Indian Ocean)

Responses of Two Scleractinian Corals to Cobalt Pollution and Ocean Acidification

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