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Adjusting Tropical Marine Water Quality Guideline Values for Elevated Ocean Temperatures

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dc.contributor Sch Earth & Environm Sci
dc.contributor Australian Institute Of Marine Science
dc.contributor Australian Rivers Inst Coast & Estuaries
dc.contributor Ctr Agroecol Water & Resilience
dc.contributor Griffith University
dc.contributor Australian Inst Marine Sci
dc.contributor Fac Sci
dc.contributor Off Great Barrier Reef
dc.contributor Griffith Univ
dc.contributor Univ Queensland
dc.contributor Sch Environm & Sci
dc.contributor Queensland Dept Environm & Sci
dc.contributor Dept Environm & Sci
dc.contributor Coventry University
dc.contributor University Of Queensland
dc.contributor Coventry Univ UTHICKE, SVEN NEGRI, ANDREW P. SMITH, RACHAEL A. KING, OLIVIA FRANGOS, JULIUS WARNE, MICHAEL ST J. 2020-02-11T23:32:10Z 2020-02-11T23:32:10Z 2020-09-02T03:44:59Z 2020-02-11T23:32:10Z 2020-02-11T23:32:10Z 2020-09-02T03:44:59Z 2020-01-21
dc.identifier.citation Negri AP, Smith RA, King O, Frangos J, Warne MS, Uthicke S (2020) Adjusting Tropical Marine Water Quality Guideline Values for Elevated Ocean Temperatures. Environmental Science and Technology 54:1102-1110
dc.identifier.issn 0013-936X
dc.description.abstract Increased frequency of summer heatwaves and poor water quality are two of the most prevalent and severe pressures faced by coral reefs. While these pressures often co-occur, their potential risks to tropical marine species are usually considered independently. Here, we extended the application of multisubstance-Potentially Affected Fraction (ms-PAF) to a nonchemical stressor, elevated sea surface temperature. We then applied this method to calculate climate-adjusted water quality guideline values (GVs) for two reference toxicants, copper and the herbicide diuron, for tropical marine species. First, we developed a species sensitivity distribution (SSD) for thermal stress based on published experimental data for 41 tropical benthic marine species using methods adapted from water quality GV derivation. This enabled quantitative predictions of community effects as temperatures exceeded acclimation values. The resulting protective temperature values (PTx) were similar to temperatures known to initiate coral bleaching and are therefore relevant for application in multistressor risk assessments. The extended ms-PAF method enabled the adjustment of current water quality GVs to account for thermal stress events. This approach could be applied to other ecosystems and other non-contaminant stressors (e.g., sediment, low salinity, anoxia, and ocean acidification), offering an alternative approach for deriving environmental GVs, reporting and assessing the risk posed by multiple stressors.
dc.description.sponsorship We thank Dr. Rebecca Fisher, Australian Institute of Marine (AIMS), for the statistical advice. A.P.N. and S.U. were funded by the Australian Government's National Environmental Science Program (NESP) Tropical Water Quality (TWQ) Hub Projects 2.1.6 and 5.2 ("From exposure to risk: novel experimental approaches to analyze cumulative impacts and determine thresholds in the GBRWHA") and NESP TWQ Project 3.1.5 ("Ecotoxicology of pesticides on the Great Barrier Reef for guideline development and risk assessments").
dc.language English
dc.subject Species Sensitivity Distributions
dc.subject Appropriate
dc.subject Mortality
dc.subject Ecosystems
dc.subject Chemical Toxicity
dc.subject Fresh
dc.subject Environmental Sciences
dc.subject Organisms
dc.subject Environmental Risk-assessment
dc.subject Environmental Sciences & Ecology
dc.subject Thresholds
dc.subject Tolerance
dc.subject Engineering
dc.subject Engineering, Environmental
dc.title Adjusting Tropical Marine Water Quality Guideline Values for Elevated Ocean Temperatures
dc.type journal article
dc.identifier.doi 10.1021/acs.est.9b05961
dc.identifier.wos WOS:000509419700048

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