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Edmunds PJ. Coral recruitment: patterns and processes determining the dynamics of coral populations. Biol Rev Camb Philos Soc 2023; 98:1862-1886. [PMID: 37340617 DOI: 10.1111/brv.12987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 05/30/2023] [Accepted: 06/02/2023] [Indexed: 06/22/2023]
Abstract
Coral recruitment describes the addition of new individuals to populations, and it is one of the most fundamental demographic processes contributing to population size. As many coral reefs around the world have experienced large declines in coral cover and abundance, there has been great interest in understanding the factors causing coral recruitment to vary and the conditions under which it can support community resilience. While progress in these areas is being facilitated by technological and scientific advances, one of the best tools to quantify recruitment remains the humble settlement tile, variants of which have been in use for over a century. Here I review the biology and ecology of coral recruits and the recruitment process, largely as resolved through the use of settlement tiles, by: (i) defining how the terms 'recruit' and 'recruitment' have been used, and explaining why loose terminology has impeded scientific advancement; (ii) describing how coral recruitment is measured and why settlement tiles have value for this purpose; (iii) summarizing previous efforts to review quantitative analyses of coral recruitment; (iv) describing advances from hypothesis-driven studies in determining how refuges, seawater flow, and grazers can modulate coral recruitment; (v) reviewing the biology of small corals (i.e. recruits) to understand better how they respond to environmental conditions; and (vi) updating a quantitative compilation of coral recruitment studies extending from 1974 to present, thus revealing long-term global declines in density of recruits, juxtaposed with apparent resilience to coral bleaching. Finally, I review future directions in the study of coral recruitment, and highlight the need to expand studies to deliver taxonomic resolution, and explain why time series of settlement tile deployments are likely to remain pivotal in quantifying coral recruitment.
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Affiliation(s)
- Peter J Edmunds
- Department of Biology, California State University, 18111 Nordhoff Street, Northridge, CA, 91330-8303, USA
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2
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Golding LA, Binet MT, Adams MS, Hochen J, Humphrey CA, Price GAV, Reichelt-Brushett AJ, Salmon M, Stauber JL. Acute and chronic toxicity of manganese to tropical adult coral (Acropora millepora) to support the derivation of marine manganese water quality guideline values. MARINE POLLUTION BULLETIN 2023; 194:115242. [PMID: 37453169 DOI: 10.1016/j.marpolbul.2023.115242] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 06/28/2023] [Accepted: 06/30/2023] [Indexed: 07/18/2023]
Abstract
Adult corals are among the most sensitive marine organisms to dissolved manganese and experience tissue sloughing without bleaching (i.e., no loss of Symbiodinium spp.) but there are no chronic toxicity data for this sensitive endpoint. We exposed adult Acropora millepora to manganese in 2-d acute and 14-d chronic experiments using tissue sloughing as the toxicity endpoint. The acute tissue sloughing median effect concentration (EC50) was 2560 μg Mn/L. There was no chronic toxicity to A. millepora at concentrations up to and including the highest concentration of 1090 μg Mn/L i.e., the chronic no observed effect concentration (NOEC). A coral-specific acute-to-chronic ratio (ACR) (EC50/NOEC) of 2.3 was derived. These data were combined with chronic toxicity data for other marine organisms in a species sensitivity distribution (SSD). Marine manganese guidelines were 190, 300, 390 and 570 μg Mn/L to provide long-term protection of 99, 95, 90, and 80 % of marine species, respectively.
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Affiliation(s)
- Lisa A Golding
- CSIRO, Environment, Tharawal Country, New Illawarra Road, Lucas Heights, New South Wales 2234, Australia.
| | - Monique T Binet
- CSIRO, Environment, Tharawal Country, New Illawarra Road, Lucas Heights, New South Wales 2234, Australia
| | - Merrin S Adams
- CSIRO, Environment, Tharawal Country, New Illawarra Road, Lucas Heights, New South Wales 2234, Australia
| | - Justin Hochen
- National Sea Simulator, Australian Institute of Marine Science, Townsville, Queensland 4810, Australia
| | - Craig A Humphrey
- National Sea Simulator, Australian Institute of Marine Science, Townsville, Queensland 4810, Australia
| | - Gwilym A V Price
- CSIRO, Environment, Tharawal Country, New Illawarra Road, Lucas Heights, New South Wales 2234, Australia; Faculty of Science, University of Technology Sydney, Ultimo, New South Wales 2007, Australia
| | | | - Matthew Salmon
- National Sea Simulator, Australian Institute of Marine Science, Townsville, Queensland 4810, Australia
| | - Jenny L Stauber
- CSIRO, Environment, Tharawal Country, New Illawarra Road, Lucas Heights, New South Wales 2234, Australia; La Trobe University, Wodonga, Victoria 3690, Australia
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Binet MT, Reichelt-Brushett A, McKnight K, Golding LA, Humphrey C, Stauber JL. Adult Corals Are Uniquely More Sensitive to Manganese Than Coral Early-Life Stages. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2023; 42:1359-1370. [PMID: 36946339 DOI: 10.1002/etc.5618] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 01/08/2023] [Accepted: 03/20/2023] [Indexed: 05/09/2023]
Abstract
Manganese (Mn) is an essential element and is generally considered to be one of the least toxic metals to aquatic organisms, with chronic effects rarely seen at concentrations below 1000 µg/L. Anthropogenic activities lead to elevated concentrations of Mn in tropical marine waters. Limited data suggest that Mn is more acutely toxic to adults than to early life stages of scleractinian corals in static renewal tests. However, to enable the inclusion of sufficient sensitive coral data in species sensitivity distributions to derive water quality guideline values for Mn, we determined the acute toxicity of Mn to the adult scleractinian coral, Acropora muricata, in flow-through exposures. The 48-h median effective concentration was 824 µg Mn/L (based on time-weighted average, measured, dissolved Mn). The endpoint was tissue sloughing, a lethal process by which coral tissue detaches from the coral skeleton. Tissue sloughing was unrelated to superoxidase dismutase activity in coral tissue, and occurred in the absence of bleaching, that is, toxic effects were observed for the coral host, but not for algal symbionts. We confirm that adult scleractinian corals are uniquely sensitive to Mn in acute exposures at concentrations 10-340 times lower than those reported to cause acute or chronic toxicity to coral early life stages, challenging the traditional notion that early life stages are more sensitive than mature organisms. Environ Toxicol Chem 2023;00:1-12. © 2023 Commonwealth Scientific and Industrial Research Organisation. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC.
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Affiliation(s)
- Monique T Binet
- Centre for Environmental Contaminants Research, Commonwealth Scientific and Industial Research Organisation Land and Water, Lucas Heights, New South Wales, Australia
| | - Amanda Reichelt-Brushett
- School of Environment, Science and Engineering, Southern Cross University, Lismore, New South Wales, Australia
| | - Kitty McKnight
- The National Sea Simulator, Australian Institute of Marine Science, Townsville, Queensland, Australia
| | - Lisa A Golding
- Centre for Environmental Contaminants Research, Commonwealth Scientific and Industial Research Organisation Land and Water, Lucas Heights, New South Wales, Australia
| | - Craig Humphrey
- The National Sea Simulator, Australian Institute of Marine Science, Townsville, Queensland, Australia
| | - Jenny L Stauber
- Centre for Environmental Contaminants Research, Commonwealth Scientific and Industial Research Organisation Land and Water, Lucas Heights, New South Wales, Australia
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Iyagbaye L, Reichelt-Brushett A, Benkendorff K. Ni accumulation and effects on a representative Cnidaria - Exaiptasia pallida during single element exposure and in combination with Mn. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 313:120110. [PMID: 36075335 DOI: 10.1016/j.envpol.2022.120110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 08/14/2022] [Accepted: 09/01/2022] [Indexed: 06/15/2023]
Abstract
Nickel (Ni) and manganese (Mn) are well known for the production of steel and alloys and are commonly found co-occurring in Ni ores. They are metals of environmental concern and contamination in the marine environment is problematic single exposures and in combination. Several studies have documented the effects of single metal exposure on the model anemone E. pallida, but research on the effects of metal mixtures is far less common. This novel study assesses the accumulation and stress effects of Ni and Mn over a 12-d exposure period. E. pallida were exposed in two separate experiments; Ni alone and Ni in combination with Mn, to assess accumulation, along with any effect on the density of symbionts and anemone tentacle length. Anemones were transferred to ambient seawater to assess depuration and recovery over 6 d. Anemone tissue accumulated Ni at a magnitude of five times higher in a mixture of 0.5 mg Ni/L with 2.5 mg Mn/L compared to the same concentration in a single Ni exposure experiment. In both experiments, Ni and Mn preferentially accumulated in the Symbiodinium spp. compared to the anemone tissue, but Ni depuration was more rapid in the mixture than Ni alone exposure. This study reveals a significant reduction in anemone Symbiodinium spp. density after exposure to Ni and Mn mixtures, but not with Ni exposure alone. A significant dose-dependent reduction in tentacle length was observed in anemones after 12 d of the Ni exposure both with and without Mn. The estimated sublethal concentration that causes tentacle retraction in 50% of test anemones (EC50) by Ni was 0.51 (0.25-0.73) mg/L, while in combination with Mn the EC50 was 0.30 mg Ni/L (confidence limits not calculatable). The present data reveals the importance of testing metal effects in combination before establishing safe limits for marine invertebrates.
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Affiliation(s)
- Louis Iyagbaye
- Faculty of Science and Engineering, Southern Cross University, Lismore, NSW, Australia; Department of Environmental Management and Toxicology, Faculty of Life Sciences, University of Benin, Benin City, Nigeria
| | | | - Kirsten Benkendorff
- National Marine Science Centre, Faculty of Science and Engineering, Southern Cross University, Coffs Harbour, NSW, Australia
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Tang J, Cai W, Yan Z, Zhang K, Zhou Z, Zhao J, Lin S. Interactive effects of acidification and copper exposure on the reproduction and metabolism of coral endosymbiont Cladocopium goreaui. MARINE POLLUTION BULLETIN 2022; 177:113508. [PMID: 35259567 DOI: 10.1016/j.marpolbul.2022.113508] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 02/13/2022] [Accepted: 02/25/2022] [Indexed: 06/14/2023]
Abstract
Ocean acidification resulting from increased CO2 and pollution from land-sourced toxicants such as copper have been linked to coral cover declines in coastal reef ecosystems. The impacts of ocean acidification and copper pollution on corals have been intensively investigated, whereas research on their effects on coral endosymbiont Symbiodiniaceae is limited. In this study, reproduction, photosynthetic parameters, nutrient accumulation and metabolome of Symbiodiniaceae Cladocopium goreaui were investigated after a weeklong treatment with acute CO2-induced acidification and copper ion. Acidification promoted algal reproduction through increased nutrients assimilation, upregulated citrate cycle and biomolecular biosynthesis pathway, while copper exposure repressed algal reproduction through toxic effects. The combined acidification and copper exposure caused the same decline in algal reproduction as copper exposure alone, but the upregulation of pentose phosphate pathway and the downregulation of aromatic amino acid biosynthesis. These results suggest that copper pollution could override the positive effects of acidification on the symbiodiniacean reproduction.
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Affiliation(s)
- Jia Tang
- Muping Coastal Environment Research Station, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong, China
| | - Wenqi Cai
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Aquaculture Breeding Engineering Research Center, Hainan University, Haikou, Hainan, China
| | - Zhicong Yan
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Aquaculture Breeding Engineering Research Center, Hainan University, Haikou, Hainan, China
| | - Kaidian Zhang
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Aquaculture Breeding Engineering Research Center, Hainan University, Haikou, Hainan, China
| | - Zhi Zhou
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Aquaculture Breeding Engineering Research Center, Hainan University, Haikou, Hainan, China.
| | - Jianmin Zhao
- Muping Coastal Environment Research Station, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong, China.
| | - Senjie Lin
- Department of Marine Sciences, University of Connecticut, Groton, CT, USA
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Burns EE, Davies IA. Coral Ecotoxicological Data Evaluation for the Environmental Safety Assessment of Ultraviolet Filters. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2021; 40:3441-3464. [PMID: 34758162 PMCID: PMC9299478 DOI: 10.1002/etc.5229] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 10/04/2021] [Accepted: 10/08/2021] [Indexed: 06/13/2023]
Abstract
There is growing interest in the environmental safety of ultraviolet (UV) filters found in cosmetic and personal care products (CPCPs). The CPCP industry is assessing appropriate environmental risk assessment (ERA) methods to conduct robust environmental safety assessments for these ingredients. Relevant and reliable data are needed for ERA, particularly when the assessment is supporting regulatory decision-making. In the present study, we apply a data evaluation approach to incorporate nonstandard toxicity data into the ERA process through an expanded range of reliability scores over commonly used approaches (e.g., Klimisch scores). The method employs an upfront screening followed by a data quality assessment based largely on the Criteria for Reporting and Evaluating Ecotoxicity Data (CRED) approach. The method was applied in a coral case study in which UV filter toxicity data was evaluated to identify data points potentially suitable for higher tier and/or regulatory ERA. This is an optimal case study because there are no standard coral toxicity test methods, and UV filter bans are being enacted based on findings reported in the current peer-reviewed data set. Eight studies comprising nine assays were identified; four of the assays did not pass the initial screening assessment. None of the remaining five assays received a high enough reliability score (Rn ) to be considered of decision-making quality (i.e., R1 or R2). Four assays were suitable for a preliminary ERA (i.e., R3 or R4), and one assay was not reliable (i.e., R6). These results highlight a need for higher quality coral toxicity studies, potentially through the development of standard test protocols, to generate reliable toxicity endpoints. These data can then be used for ERA to inform environmental protection and sustainability decision-making. Environ Toxicol Chem 2021;40:3441-3464. © 2021 Personal Care Products Council. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC.
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Nalley EM, Tuttle LJ, Barkman AL, Conklin EE, Wulstein DM, Richmond RH, Donahue MJ. Water quality thresholds for coastal contaminant impacts on corals: A systematic review and meta-analysis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 794:148632. [PMID: 34323749 DOI: 10.1016/j.scitotenv.2021.148632] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 06/15/2021] [Accepted: 06/19/2021] [Indexed: 06/13/2023]
Abstract
Reduced water quality degrades coral reefs, resulting in compromised ecosystem function and services to coastal communities. Increasing management capacity on reefs requires prioritization of the development of data-based water-quality thresholds and tipping points. To meet this urgent need of marine resource managers, we conducted a systematic review and meta-analysis that quantified the effects on scleractinian corals of chemical pollutants from land-based and atmospheric sources. We compiled a global dataset addressing the effects of these pollutants on coral growth, mortality, reproduction, physiology, and behavior. The resulting quantitative review of 55 articles includes information about industrial sources, modes of action, experimentally tested concentrations, and previously identified tolerance thresholds of corals to 13 metals, 18 pesticides, 5 polycyclic aromatic hydrocarbons (PAHs), a polychlorinated biphenyl (PCB), and a pharmaceutical. For data-rich contaminants, we make more robust threshold estimates by adapting models for Bayesian hierarchical meta-analysis that were originally developed for biopharmaceutical application. These models use information from multiple studies to characterize the dose-response relationships (i.e., Emax curves) between a pollutant's concentration and various measures of coral health. Metals used in antifouling paints, especially copper, have received a great deal of attention to-date, thus enabling us to estimate the cumulative impact of copper across coral's early life-history. The effects of other land-based pollutants on corals are comparatively understudied, which precludes more quantitative analysis. We discuss opportunities to improve future research so that it can be better integrated into quantitative assessments of the effects of more pollutant types on sublethal coral stress-responses. We also recommend that managers use this information to establish more conservative water quality thresholds that account for the synergistic effects of multiple pollutants on coral reefs. Ultimately, active remediation of local stressors will improve the resistance, resilience, and recovery of individual reefs and reef ecosystems facing the global threat of climate change.
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Affiliation(s)
- Eileen M Nalley
- Hawai'i Institute of Marine Biology, University of Hawai'i at Mānoa, 46-007 Lilipuna Road, Kāne'ohe, HI 96744, USA.
| | - Lillian J Tuttle
- Hawai'i Institute of Marine Biology, University of Hawai'i at Mānoa, 46-007 Lilipuna Road, Kāne'ohe, HI 96744, USA; NOAA Pacific Islands Regional Office, Honolulu, HI 96860, USA
| | - Alexandria L Barkman
- Kewalo Marine Laboratory, Pacific Biosciences Research Center, University of Hawai'i at Mānoa, 41 Ahui Street, Honolulu, HI 96813, USA
| | - Emily E Conklin
- Hawai'i Institute of Marine Biology, University of Hawai'i at Mānoa, 46-007 Lilipuna Road, Kāne'ohe, HI 96744, USA
| | - Devynn M Wulstein
- Hawai'i Institute of Marine Biology, University of Hawai'i at Mānoa, 46-007 Lilipuna Road, Kāne'ohe, HI 96744, USA
| | - Robert H Richmond
- Kewalo Marine Laboratory, Pacific Biosciences Research Center, University of Hawai'i at Mānoa, 41 Ahui Street, Honolulu, HI 96813, USA
| | - Megan J Donahue
- Hawai'i Institute of Marine Biology, University of Hawai'i at Mānoa, 46-007 Lilipuna Road, Kāne'ohe, HI 96744, USA
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Bayless AL, Christopher SJ, Day RD, Ness JM, Bryan CE, Toline CA, Woodley CM. Trace element proxies and stable isotopes used to identify water quality threats to elkhorn coral (Acropora palmata) at two national parks in St. Croix, USVI. MARINE POLLUTION BULLETIN 2021; 169:112575. [PMID: 34119965 DOI: 10.1016/j.marpolbul.2021.112575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 05/06/2021] [Accepted: 05/27/2021] [Indexed: 06/12/2023]
Abstract
Biological impairments have been documented on reefs at two national parks in St. Croix, USVI. Although several water quality parameters have been out of compliance with USVI criteria, whether these parameters or other pollutants are responsible for coral health impacts is unknown. Trace elements quantified in sediment showed four sites at SARI, which is closer than BUIS to settlements and land-derived anthropogenic outflows, had Cu mass fractions above sediment quality guidelines for invertebrate toxicity. Trace elements were also analyzed in the skeleton of threatened elkhorn coral, Acropora palmata, to evaluate potential exposure. Heavy metals (Pb, Zn) were significantly greater in coral skeleton at SARI than BUIS. Cu, Pb, and Zn may be impacting coral health in these parks. Potential anthropogenic sources of these metals were revealed by the coral tissue stable isotope levels (δ13C and δ15N). These findings provide a framework for determining heavy metal impacts on these invaluable reefs.
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Affiliation(s)
- Amanda L Bayless
- College of Charleston, Department of Biology contractor for National Institute of Standards and Technology, Chemical Sciences Division, Hollings Marine Laboratory, 331 Fort Johnson Rd., Charleston, SC 29412, USA; The University of Charleston, SC at the College of Charleston, Grice Marine Laboratory, 205 Fort Johnson Rd., Charleston, SC 29412, USA.
| | - Steven J Christopher
- National Institute of Standards and Technology, Chemical Sciences Division, Hollings Marine Laboratory, 331 Fort Johnson Rd., Charleston, SC 29412, USA
| | - Russell D Day
- Marine Science and Nautical Training Academy (MANTA), 520 Folly Rd., Charleston, SC 29412, USA
| | - Jennifer M Ness
- National Institute of Standards and Technology, Chemical Sciences Division, Hollings Marine Laboratory, 331 Fort Johnson Rd., Charleston, SC 29412, USA
| | - Colleen E Bryan
- National Institute of Standards and Technology, Chemical Sciences Division, Hollings Marine Laboratory, 331 Fort Johnson Rd., Charleston, SC 29412, USA
| | - C Anna Toline
- United States National Park Service, Region 2, South Atlantic Gulf, Charleston, SC 29412, USA
| | - Cheryl M Woodley
- National Oceanic and Atmospheric Administration, National Ocean Service, National Centers for Coastal Ocean Science, Stressor Detection and Impacts Division, Hollings Marine Laboratory, 331 Fort Johnson Rd., Charleston, SC 29412, USA
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Gillmore ML, Golding LA, Chariton AA, Stauber JL, Stephenson S, Gissi F, Greenfield P, Juillot F, Jolley DF. Metabarcoding Reveals Changes in Benthic Eukaryote and Prokaryote Community Composition along a Tropical Marine Sediment Nickel Gradient. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2021; 40:1894-1907. [PMID: 33751674 DOI: 10.1002/etc.5039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Revised: 01/27/2021] [Accepted: 03/09/2021] [Indexed: 06/12/2023]
Abstract
The Southeast Asia and Melanesia region has extensive nickel (Ni)-rich lateritic regoliths formed from the tropical weathering of ultramafic rocks. As the global demand for Ni continues to rise, these lateritic regoliths are increasingly being exploited for their economic benefit. Mining of these regoliths contributes to the enrichment of coastal sediments in trace metals, especially Ni. The present study used high-throughput sequencing (metabarcoding) to determine changes in eukaryote (18s v7 recombinant DNA [rDNA] and diatom-specific subregion of the 18s v4 rDNA) and prokaryote (16s v4 rDNA) community compositions along a sediment Ni concentration gradient offshore from a large lateritized ultramafic regolith in New Caledonia (Vavouto Bay). Significant changes in the eukaryote, diatom, and prokaryote community compositions were found along the Ni concentration gradient. These changes correlated most with the dilute-acid extractable concentration of Ni in the sediments, which explained 26, 23, and 19% of the variation for eukaryote, diatom, and prokaryote community compositions, respectively. Univariate analyses showed that there was no consistent change in indices of biodiversity, evenness, or richness. Diatom richness and diversity did, however, decrease as sediment acid extractable-Ni concentrations increased. Threshold indicator taxa analysis was conducted separately for each of the 3 targeted genes to detect changes in taxa whose occurrences decreased or increased along the acid extractable-Ni concentration gradient. Based on these data, 46 mg acid extractable-Ni/kg was determined as a threshold value where sensitive species began to disappear. In the case of the estuarine sediments offshore from lateritized ultramafic regolith in New Caledonia, this is recommended as an interim threshold value until further lines of evidence can contribute to a region-specific Ni sediment quality guideline value. Environ Toxicol Chem 2021;40:1894-1907. © 2021 SETAC.
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Affiliation(s)
- Megan L Gillmore
- School of Earth, Atmosphere and Life Sciences, University of Wollongong, Wollongong, New South Wales, Australia
- Commonwealth Scientific and Industrial Research Organisation Land and Water, Lucas Heights, New South Wales, Australia
| | - Lisa A Golding
- Commonwealth Scientific and Industrial Research Organisation Land and Water, Lucas Heights, New South Wales, Australia
| | - Anthony A Chariton
- Department of Biological Sciences, Macquarie University, North Ryde, New South Wales, Australia
| | - Jenny L Stauber
- Commonwealth Scientific and Industrial Research Organisation Land and Water, Lucas Heights, New South Wales, Australia
| | - Sarah Stephenson
- Commonwealth Scientific and Industrial Research Organisation Oceans and Atmosphere, Lucas Heights, New South Wales, Australia
| | - Francesca Gissi
- School of Earth, Atmosphere and Life Sciences, University of Wollongong, Wollongong, New South Wales, Australia
- Commonwealth Scientific and Industrial Research Organisation Oceans and Atmosphere, Lucas Heights, New South Wales, Australia
| | - Paul Greenfield
- Commonwealth Scientific and Industrial Research Organisation Energy, North Ryde, New South Wales, Australia
| | - Farid Juillot
- Institut de Recherche pour le Developpement, Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, Noumea, New Caledonia
| | - Dianne F Jolley
- School of Earth, Atmosphere and Life Sciences, University of Wollongong, Wollongong, New South Wales, Australia
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Garman ER, Schlekat CE, Middleton E, Merrington G, Peters A, Smith R, Stauber JL, Leung KMY, Gissi F, Binet MT, Adams MS, Gillmore ML, Golding LA, Jolley D, Wang Z, Reichelt‐Brushett A. Development of a bioavailability-based risk assessment framework for nickel in Southeast Asia and Melanesia. INTEGRATED ENVIRONMENTAL ASSESSMENT AND MANAGEMENT 2021; 17:802-813. [PMID: 33404201 PMCID: PMC8359217 DOI: 10.1002/ieam.4384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 11/25/2020] [Accepted: 12/17/2020] [Indexed: 06/12/2023]
Abstract
Nickel laterite ore deposits are becoming increasingly important sources of Ni for the global marketplace and are found mainly in tropical and subtropical regions, including Indonesia, the Philippines, Papua New Guinea, Cuba, and New Caledonia. There are few legislatively derived standards or guidelines for the protection of aquatic life for Ni in many of these tropical regions, and bioavailability-based environmental risk assessment (ERA) approaches for metals have mainly been developed and tested in temperate regions, such as the United States and Europe. This paper reports on a multi-institutional, 5-y testing program to evaluate Ni exposure, effects, and risk characterization in the Southeast Asia and Melanesia (SEAM) region, which includes New Caledonia, Papua New Guinea, the Philippines, and Indonesia. Further, we have developed an approach to determine if the individual components of classical ERA, including effects assessments, exposure assessments, and risk characterization methodologies (which include bioavailability normalization), are applicable in this region. A main conclusion of this research program is that although ecosystems and exposures may be different in tropical systems, ERA paradigms are constant. A large chronic ecotoxicity data set for Ni is now available for tropical species, and the data developed suggest that tropical ecosystems are not uniquely sensitive to Ni exposure; hence, scientific support exists for combining tropical and temperate data sets to develop tropical environmental quality standards (EQSs). The generic tropical database and tropical exposure scenarios generated can be used as a starting point to examine the unique biotic and abiotic characteristics of specific tropical ecosystems in the SEAM region. Integr Environ Assess Manag 2021;17:802-813. © 2021 The Authors. Integrated Environmental Assessment and Management published by Wiley Periodicals LLC on behalf of Society of Environmental Toxicology & Chemistry (SETAC).
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Affiliation(s)
| | | | | | | | | | | | | | - Kenneth MY Leung
- State Key Laboratory of Marine Pollution and Department of Chemistry, City University of Hong KongKowloonHong KongChina
| | - Francesca Gissi
- CSIRO, Oceans and AtmosphereLucas HeightsNew South WalesAustralia
- School of Earth, Atmosphere and Life Sciences, University of WollongongNew South WalesAustralia
| | | | - Merrin S Adams
- CSIRO Land and WaterLucas HeightsNew South WalesAustralia
| | - Megan L Gillmore
- CSIRO Land and WaterLucas HeightsNew South WalesAustralia
- School of Earth, Atmosphere and Life Sciences, University of WollongongNew South WalesAustralia
| | - Lisa A Golding
- CSIRO Land and WaterLucas HeightsNew South WalesAustralia
| | - Dianne Jolley
- School of Earth, Atmosphere and Life Sciences, University of WollongongNew South WalesAustralia
| | - Zhen Wang
- Institute of Marine Sciences and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou UniversityShantouChina
| | - Amanda Reichelt‐Brushett
- Marine Ecology Research Centre, School of Environment, Science and Engineering, Southern Cross UniversityLismoreNew South WalesAustralia
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11
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Assessing the Ecotoxicity of Copper and Polycyclic Aromatic Hydrocarbons: Comparison of Effects on Paracentrotus lividus and Botryllus schlosseri, as Alternative Bioassay Methods. WATER 2021. [DOI: 10.3390/w13050711] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Adult sea urchins and their embryos are ideal targets to investigate the medium- and long-term effects of various toxic agents, such as organic and inorganic pollutants, to forecast and mitigate their environmental effects. Similarly, small colonial tunicates such as Botryllid ascidians may reveal acute toxicity processes and permit quick responses for the management of contaminants impacting coastal waters, to preserve the functional integrity of marine ecosystems. This investigation compares the functional responses of two model invertebrates, the sea urchin Paracentrotus lividus and the sea squirt Botryllus schlosseri, to chronic and acute exposures to organic and inorganic toxic agents. Such heavy metals as copper produce both acute and chronic effects on marine biota, while polycyclic aromatic hydrocarbons (PAHs) mainly produce chronic effects at the concentrations ordinarily measured in marine coastal waters. Both models were tested over a range of concentrations of copper and PAHs. Copper triggered a clear effect in both species, producing a delay in the embryo development of P. lividus and a rapid death of sea squirts. B. schlosseri was less sensitive to PAHs than P. lividus. The results on both species may synergistically contribute to assess the toxicity of organic and inorganic compounds at various concentrations and different physiologic levels.
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12
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Banc-Prandi G, Cerutti JMB, Fine M. Recovery assessment of the branching coral Stylophora pistillata following copper contamination and depuration. MARINE POLLUTION BULLETIN 2021; 162:111830. [PMID: 33234258 DOI: 10.1016/j.marpolbul.2020.111830] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Revised: 11/05/2020] [Accepted: 11/06/2020] [Indexed: 06/11/2023]
Abstract
Most contemporary coral reefs live under both global (e.g. warming and acidification) and local (e.g. overfishing, pollution) stressors, which may synergistically undermine their resilience to thermal bleaching and diseases. While heavy metal toxicity in reefs has been well characterized, information on corals recovery from acute contamination is lacking. We studied for 42 days the ability of the coral Stylophora pistillata from the Gulf of Aqaba (northern Red Sea) to recover from a short (3 days) and prolonged (14 days) copper (Cu) contamination (1 μg L-1), after 11 ('Exp3/D11') and 28 ('Exp14/D28') days of depuration, respectively. Cu caused a decrease in chlorophyll content after 3 days, and in net photosynthesis (Pn) after 14 and 42 days. 'Exp14/D28' showed successful recovery based on Pn and relative electron transport rate, as opposed to 'Exp3/D11'. Results suggest the depuration time may be of greater importance than the exposure period to recover from such contamination.
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Affiliation(s)
- Guilhem Banc-Prandi
- The Goodman Faculty of Life Sciences, Bar Ilan University, Ramat-Gan 52900, Israel; The Interuniversity Institute for Marine Sciences, Eilat 88103, Israel.
| | - Julia M B Cerutti
- The Goodman Faculty of Life Sciences, Bar Ilan University, Ramat-Gan 52900, Israel; The Interuniversity Institute for Marine Sciences, Eilat 88103, Israel
| | - Maoz Fine
- The Goodman Faculty of Life Sciences, Bar Ilan University, Ramat-Gan 52900, Israel; The Interuniversity Institute for Marine Sciences, Eilat 88103, Israel
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13
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Wang Z, Yeung KWY, Zhou GJ, Yung MMN, Schlekat CE, Garman ER, Gissi F, Stauber JL, Middleton ET, Lin Wang YY, Leung KMY. Acute and chronic toxicity of nickel on freshwater and marine tropical aquatic organisms. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 206:111373. [PMID: 33002820 DOI: 10.1016/j.ecoenv.2020.111373] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 07/07/2020] [Accepted: 09/14/2020] [Indexed: 06/11/2023]
Abstract
Water quality guidelines and ecological risk assessment of chemical substances like nickel (Ni) in tropical regions such as South East Asia and Melanesia are often based on temperate information as a result of fewer Ni ecotoxicity data available for tropical species. This leaves an unknown margin of uncertainty in the risk assessment in the tropics. In order to fill this data gap, this study was designed to conduct standard toxicity tests on Ni with two freshwater species (acute tests) and three marine species (acute and chronic tests) originated from tropical Hong Kong. All tests were carried out using measured concentrations of Ni with control mortality below 15%. The median lethal concentrations (LC50s) were determined as 2520 (95% confidence interval: 2210, 2860) and 426 (351, 515) μg Ni L-1 for the freshwater gastropods Pomacea lineata (48 h) and Sulcospira hainanensis (96 h), respectively, while 96 h LC50s of 4300 (3610, 5090), 18,200 (6470, 51,200), 62,400 (56,800, 68,500), and 71,700 (68,200, 75,400) μg Ni L-1 were derived for the marine copepod Tigriopus japonicus, the gastropod Monodonta labio, juvenile and adult of the marine fish Oryzias melastigma, respectively. The chronic effect concentration of 10% (EC10) based on the intrinsic rate of increase of the population of T. japonicus was 29 (12, 69) μg Ni L-1. In terms of growth inhibition, the chronic EC10 for M. labio was 34 (17, 67) μg Ni L-1. The results also indicated that T. japonicus in maturation stage (LC10: 484 (349, 919) μg Ni L-1) was less sensitive than its nauplii stage (LC10: 44 (27, 72) μg Ni L-1). This study represents an important addition of high-quality toxicity data to the tropical Ni toxicity database which can be used for future ecological risk assessment of Ni and derivation of its water quality guidelines in tropical regions.
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Affiliation(s)
- Zhen Wang
- Institute of Marine Sciences and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou, 515063, China; The Swire Institute of Marine Science and School of Biological Sciences, the University of Hong Kong, Pokfulam, Hong Kong, China.
| | - Katie W Y Yeung
- The Swire Institute of Marine Science and School of Biological Sciences, the University of Hong Kong, Pokfulam, Hong Kong, China
| | - Guang-Jie Zhou
- The Swire Institute of Marine Science and School of Biological Sciences, the University of Hong Kong, Pokfulam, Hong Kong, China
| | - Mana M N Yung
- The Swire Institute of Marine Science and School of Biological Sciences, the University of Hong Kong, Pokfulam, Hong Kong, China; Department of Science, School of Science and Technology, the Open University of Hong Kong, Hong Kong, China
| | | | | | - Francesca Gissi
- School of Chemistry, University of Wollongong, NSW, 2500, Australia; CSIRO Oceans and Atmosphere, Lucas Heights, NSW, 2234, Australia
| | | | | | - Yolina Yu Lin Wang
- Institute of Marine Sciences and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou, 515063, China
| | - Kenneth M Y Leung
- State Key Laboratory of Marine Pollution and Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China; State Key Laboratory of Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong, China.
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14
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Gissi F, Wang Z, Batley GE, Leung KM, Schlekat CE, Garman ER, Stauber JL. Deriving a Chronic Guideline Value for Nickel in Tropical and Temperate Marine Waters. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2020; 39:2540-2551. [PMID: 32955772 PMCID: PMC7756218 DOI: 10.1002/etc.4880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 07/02/2020] [Accepted: 09/17/2020] [Indexed: 05/15/2023]
Abstract
The absence of chronic toxicity data for tropical marine waters has limited our ability to derive appropriate water quality guideline values for metals in tropical regions. To aid environmental management, temperate data are usually extrapolated to other climatic (e.g., tropical) regions. However, differences in climate, water chemistry, and endemic biota between temperate and tropical systems make such extrapolations uncertain. Chronic nickel (Ni) toxicity data were compiled for temperate (24 species) and tropical (16 species) marine biota and their sensitivities to Ni compared. Concentrations to cause a 10% effect for temperate biota ranged from 2.9 to 20 300 µg Ni/L, with sea urchin larval development being the most sensitive endpoint. Values for tropical data ranged from 5.5 to 3700 µg Ni/L, with copepod early-life stage development being the most sensitive test. There was little difference in temperate and tropical marine sensitivities to Ni, with 5% hazardous concentrations (95% confidence interval) of 4.4 (1.8-17), 9.6 (1.7-26), and 5.8 (2.8-15) µg Ni/L for temperate, tropical, and combined temperate and tropical species, respectively. To ensure greater taxonomic coverage and based on guidance provided in Australia and New Zealand, it is recommended that the combined data set be used as the basis to generate a jurisdiction-specific water quality guideline of 6 µg Ni/L for 95% species protection applicable to both temperate and tropical marine environments. Environ Toxicol Chem 2020;39:2540-2551. © 2020 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC.
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Affiliation(s)
- Francesca Gissi
- CSIRO Oceans and Atmosphere, Lucas Heights, New South WalesAustralia
| | - Zhen Wang
- Institute of Marine Sciences and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou UniversityShantouChina
| | | | - Kenneth M.Y. Leung
- State Key Laboratory of Marine Pollution and Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, KowloonHong KongChina
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15
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Fujise L, Suggett DJ, Stat M, Kahlke T, Bunce M, Gardner SG, Goyen S, Woodcock S, Ralph PJ, Seymour JR, Siboni N, Nitschke MR. Unlocking the phylogenetic diversity, primary habitats, and abundances of free-living Symbiodiniaceae on a coral reef. Mol Ecol 2020; 30:343-360. [PMID: 33141992 DOI: 10.1111/mec.15719] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2019] [Revised: 10/21/2020] [Accepted: 10/27/2020] [Indexed: 01/04/2023]
Abstract
Dinoflagellates of the family Symbiodiniaceae form mutualistic symbioses with marine invertebrates such as reef-building corals, but also inhabit reef environments as free-living cells. Most coral species acquire Symbiodiniaceae horizontally from the surrounding environment during the larval and/or recruitment phase, however the phylogenetic diversity and ecology of free-living Symbiodiniaceae on coral reefs is largely unknown. We coupled environmental DNA sequencing and genus-specific qPCR to resolve the community structure and cell abundances of free-living Symbiodiniaceae in the water column, sediment, and macroalgae and compared these to coral symbionts. Sampling was conducted at two time points, one of which coincided with the annual coral spawning event when recombination between hosts and free-living Symbiodiniaceae is assumed to be critical. Amplicons of the internal transcribed spacer (ITS2) region were assigned to 12 of the 15 Symbiodiniaceae genera or genera-equivalent lineages. Community compositions were separated by habitat, with water samples containing a high proportion of sequences corresponding to coral symbionts of the genus Cladocopium, potentially as a result of cell expulsion from in hospite populations. Sediment-associated Symbiodiniaceae communities were distinct, potentially due to the presence of exclusively free-living species. Intriguingly, macroalgal surfaces displayed the highest cell abundances of Symbiodiniaceae, suggesting a key role for macroalgae in ensuring the ecological success of corals through maintenance of a continuum between environmental and symbiotic populations of Symbiodiniaceae.
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Affiliation(s)
- Lisa Fujise
- Faculty of Science, Climate Change Cluster, University of Technology Sydney, Sydney, NSW, Australia
| | - David J Suggett
- Faculty of Science, Climate Change Cluster, University of Technology Sydney, Sydney, NSW, Australia
| | - Michael Stat
- Trace and Environmental DNA (TrEnD) Laboratory, Curtin University, Bentley, Perth, WA, Australia.,School of Environmental and Life Sciences, The University of Newcastle, Callaghan, NSW, Australia
| | - Tim Kahlke
- Faculty of Science, Climate Change Cluster, University of Technology Sydney, Sydney, NSW, Australia
| | - Michael Bunce
- Trace and Environmental DNA (TrEnD) Laboratory, Curtin University, Bentley, Perth, WA, Australia
| | - Stephanie G Gardner
- Faculty of Science, Climate Change Cluster, University of Technology Sydney, Sydney, NSW, Australia.,Centre for Marine Science and Innovation, University of New South Wales Australia, Kensington, NSW, Australia
| | - Samantha Goyen
- Faculty of Science, Climate Change Cluster, University of Technology Sydney, Sydney, NSW, Australia
| | - Stephen Woodcock
- Faculty of Science, Climate Change Cluster, University of Technology Sydney, Sydney, NSW, Australia
| | - Peter J Ralph
- Faculty of Science, Climate Change Cluster, University of Technology Sydney, Sydney, NSW, Australia
| | - Justin R Seymour
- Faculty of Science, Climate Change Cluster, University of Technology Sydney, Sydney, NSW, Australia
| | - Nachshon Siboni
- Faculty of Science, Climate Change Cluster, University of Technology Sydney, Sydney, NSW, Australia
| | - Matthew R Nitschke
- Faculty of Science, Climate Change Cluster, University of Technology Sydney, Sydney, NSW, Australia.,School of Biological Sciences, Victoria University of Wellington, Wellington, New Zealand
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16
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Flores F, Kaserzon S, Elisei G, Ricardo G, Negri AP. Toxicity thresholds of three insecticides and two fungicides to larvae of the coral Acropora tenuis. PeerJ 2020; 8:e9615. [PMID: 33194337 PMCID: PMC7394062 DOI: 10.7717/peerj.9615] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 07/06/2020] [Indexed: 12/22/2022] Open
Abstract
Tropical marine ecosystems, such as coral reefs, face several threats to their health and resilience, including poor water quality. Previous studies on the risks posed by pesticides have focused on five priority herbicides; however, as the number of pesticides applied in coastal agriculture increases, a suite of 'alternative' pesticides is being detected in tropical nearshore waters. To improve our understanding of the risks posed by alternative pesticides to tropical marine organisms, the effects of three insecticides (diazinon, fipronil, imidacloprid) and two fungicides (chlorothalonil, propiconazole) were tested on larval metamorphosis of the coral Acropora tenuis. A. tenuis larvae were affected by all five pesticides and the reference toxicant copper. The no effect concentration (NEC) and the 10% and 50% effect concentrations (EC10 and EC50, respectively) for larval metamorphosis were estimated from concentration-response curves after 48 h exposure. The NEC, EC10 and EC50 (in µg L-1), respectively, of each pesticide were as follows: chlorothalonil (2.4, 2.8, 6.0); fipronil (12.3, 13.9, 29.1); diazinon (38.0, 40.8, 54.7); imidacloprid (263, 273, 347); and propiconazole (269, 330, 1008). These toxicity thresholds are higher than reported concentrations in monitoring programs; however, these data will contribute to improving water quality guideline values, which inform the total risk assessments posed by complex contaminant mixtures to which these pesticides contribute.
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Affiliation(s)
- Florita Flores
- Australian Institute of Marine Science, Townsville, QLD, Australia
| | - Sarit Kaserzon
- Queensland Alliance for Environmental Health Sciences (QAEHS), The University of Queensland, Woolloongabba, QLD, Australia
| | - Gabriele Elisei
- Queensland Alliance for Environmental Health Sciences (QAEHS), The University of Queensland, Woolloongabba, QLD, Australia
| | - Gerard Ricardo
- Australian Institute of Marine Science, Townsville, QLD, Australia
| | - Andrew P. Negri
- Australian Institute of Marine Science, Townsville, QLD, Australia
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17
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Gillmore ML, Gissi F, Golding LA, Stauber JL, Reichelt-Brushett AJ, Severati A, Humphrey CA, Jolley DF. Effects of dissolved nickel and nickel-contaminated suspended sediment on the scleractinian coral, Acropora muricata. MARINE POLLUTION BULLETIN 2020; 152:110886. [PMID: 32479277 DOI: 10.1016/j.marpolbul.2020.110886] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Revised: 12/27/2019] [Accepted: 01/06/2020] [Indexed: 06/11/2023]
Abstract
Intensification of lateritic nickel mining in Southeast Asia and Melanesia potentially threatens coastal ecosystems from increased exposure to nickel and suspended sediment. This study investigated the response of Acropora muricata when exposed to either dissolved nickel, clean suspended sediment or nickel-contaminated suspended sediment for 7 days, followed by a 7-d recovery period. Significant bleaching and accumulation of nickel in coral tissue was observed only after exposure to high dissolved nickel concentrations and nickel-spiked suspended sediment. No effect on A. muricata was observed from exposure to a particulate-bound nickel concentration of 60 mg/kg acid-extractable nickel at a suspended sediment concentration of 30 mg/L TSS. This study demonstrates that bioavailability of nickel associated with suspended sediment exposure plays a key role in influencing nickel toxicity to corals. These findings assist in assessments of risk posed by increasing nickel mining activities on tropical marine ecosystems.
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Affiliation(s)
- Megan L Gillmore
- School of Earth, Atmospheric and Life Sciences, University of Wollongong, Wollongong, NSW 2522, Australia; CSIRO Land and Water, Lucas Heights, NSW 2234, Australia.
| | - Francesca Gissi
- School of Earth, Atmospheric and Life Sciences, University of Wollongong, Wollongong, NSW 2522, Australia; CSIRO Oceans and Atmosphere, Lucas Heights, NSW 2234, Australia
| | - Lisa A Golding
- CSIRO Land and Water, Lucas Heights, NSW 2234, Australia
| | | | - Amanda J Reichelt-Brushett
- Marine Ecology Research Centre, School of Environment Science and Engineering, Southern Cross University, Lismore, NSW 2480, Australia
| | - Andrea Severati
- National Sea Simulator, Australian Institute of Marine Science, Townsville, QLD 4810, Australia
| | - Craig A Humphrey
- National Sea Simulator, Australian Institute of Marine Science, Townsville, QLD 4810, Australia
| | - Dianne F Jolley
- School of Earth, Atmospheric and Life Sciences, University of Wollongong, Wollongong, NSW 2522, Australia
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18
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Abstract
Nickel (Ni) metal and Ni compounds are widely used in applications like stainless steel, alloys, and batteries. Nickel is a naturally occurring element in water, soil, air, and living organisms, and is essential to microorganisms and plants. Thus, human and environmental nickel exposures are ubiquitous. Production and use of nickel and its compounds can, however, result in additional exposures to humans and the environment. Notable human health toxicity effects identified from human and/or animal studies include respiratory cancer, non-cancer toxicity effects following inhalation, dermatitis, and reproductive effects. These effects have thresholds, with indirect genotoxic and epigenetic events underlying the threshold mode of action for nickel carcinogenicity. Differences in human toxicity potencies/potentials of different nickel chemical forms are correlated with the bioavailability of the Ni2+ ion at target sites. Likewise, Ni2+ has been demonstrated to be the toxic chemical species in the environment, and models have been developed that account for the influence of abiotic factors on the bioavailability and toxicity of Ni2+ in different habitats. Emerging issues regarding the toxicity of nickel nanoforms and metal mixtures are briefly discussed. This review is unique in its covering of both human and environmental nickel toxicity data.
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19
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Gissi F, Reichelt-Brushett AJ, Chariton AA, Stauber JL, Greenfield P, Humphrey C, Salmon M, Stephenson SA, Cresswell T, Jolley DF. The effect of dissolved nickel and copper on the adult coral Acropora muricata and its microbiome. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 250:792-806. [PMID: 31042619 DOI: 10.1016/j.envpol.2019.04.030] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2018] [Revised: 02/14/2019] [Accepted: 04/06/2019] [Indexed: 06/09/2023]
Abstract
The potential impacts of mining activities on tropical coastal ecosystems are poorly understood. In particular, limited information is available on the effects of metals on scleractinian corals which are foundation species that form vital structural habitats supporting other biota. This study investigated the effects of dissolved nickel and copper on the coral Acropora muricata and its associated microbiota. Corals collected from the Great Barrier Reef were exposed to dissolved nickel (45, 90, 470, 900 and 9050 μg Ni/L) or copper (4, 11, 32 and 65 μg Cu/L) in flow through chambers at the National Sea Simulator, Townsville, Qld, Australia. After a 96-h exposure DNA metabarcoding (16S rDNA and 18S rDNA) was undertaken on all samples to detect changes in the structure of the coral microbiome. The controls remained healthy throughout the study period. After 36 h, bleaching was only observed in corals exposed to 32 and 65 μg Cu/L and very high nickel concentrations (9050 μg Ni/L). At 96 h, significant discolouration of corals was only observed in 470 and 900 μg Ni/L treatments, the highest concentrations tested. While high concentrations of nickel caused bleaching, no changes in the composition of their microbiome communities were observed. In contrast, exposure to copper not only resulted in bleaching, but altered the composition of both the eukaryote and bacterial communities of the coral's microbiomes. Our findings showed that these effects were only evident at relatively high concentrations of nickel and copper, reflecting concentrations observed only in extremely polluted environments. Elevated metal concentrations have the capacity to alter the microbiomes which are inherently linked to coral health.
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Affiliation(s)
- Francesca Gissi
- CSIRO Oceans and Atmosphere, Locked Bag 2007, Kirrawee, NSW, 2232, Australia; School of Chemistry, University of Wollongong, NSW, Australia.
| | | | | | | | - Paul Greenfield
- Department of Biological Sciences, Macquarie University, NSW, Australia; CSIRO Energy, North Ryde, NSW, Australia
| | - Craig Humphrey
- National Sea Simulator, Australian Institute of Marine Science, Townsville, QLD, Australia
| | - Matt Salmon
- National Sea Simulator, Australian Institute of Marine Science, Townsville, QLD, Australia
| | - Sarah A Stephenson
- CSIRO Oceans and Atmosphere, Locked Bag 2007, Kirrawee, NSW, 2232, Australia
| | | | - Dianne F Jolley
- Faculty of Science, University of Technology Sydney, Australia
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20
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Summer K, Reichelt-Brushett A, Howe P. Toxicity of manganese to various life stages of selected marine cnidarian species. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 167:83-94. [PMID: 30312889 DOI: 10.1016/j.ecoenv.2018.09.116] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Revised: 09/07/2018] [Accepted: 09/26/2018] [Indexed: 05/25/2023]
Abstract
Manganese (Mn) pollution in marine waters is increasing and sensitivities to this metal vary widely among marine species. The aims of this study were to characterise Mn chemistry in seawater, and evaluate the toxic effects of Mn on various life stages of two scleractinian corals - the branching sp. Acropora spathulata and massive sp. Platygyra daedalea, and the anemone Exaiptasia pallida. Analytical and theoretical characterisation experiments showed that 97-100% of Mn (II) additions ≤ 200 mg/L in seawater were soluble over 72 h and largely assumed labile complexes. Concentrations estimated to reduce coral fertilisation success by 50% (5.5-h EC50) were 237 mg/L for A. spathulata and 164 mg/L for P. daedalea. A relatively low 72-h LC50 of 7 mg/L was calculated for A. spathulata larvae. In a pilot test using fragments of adult A. spathulata, intact coral tissue rapidly sloughed away from the underlying skeleton at very low concentrations with a 48-h EC50 of just 0.7 mg/L. For E. pallida, survival, tentacle retraction and reproduction were unaffected by prolonged high exposures (12-d NOEC 54 mg/L). This study provides important data supporting the derivation of separate water quality guidelines for Mn in systems with and without coral - a decision recently considered by Australian and New Zealand authorities. It demonstrates the high sensitivity of coral larvae and adult colonies to Mn and the potential risks associated with relying on other early life stage tests and/or E. pallida as ecotoxicological representatives of critically important scleractinian corals.
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Affiliation(s)
- Kate Summer
- Marine Ecology Research Centre, School of Environment, Science and Engineering, Southern Cross University, Military Road, East Lismore, NSW 2480, Australia
| | - Amanda Reichelt-Brushett
- Marine Ecology Research Centre, School of Environment, Science and Engineering, Southern Cross University, Military Road, East Lismore, NSW 2480, Australia.
| | - Pelli Howe
- Marine Ecology Research Centre, School of Environment, Science and Engineering, Southern Cross University, Military Road, East Lismore, NSW 2480, Australia
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21
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Pichler T, Biscéré T, Kinch J, Zampighi M, Houlbrèque F, Rodolfo-Metalpa R. Suitability of the shallow water hydrothermal system at Ambitle Island (Papua New Guinea) to study the effect of high pCO 2 on coral reefs. MARINE POLLUTION BULLETIN 2019; 138:148-158. [PMID: 30660256 DOI: 10.1016/j.marpolbul.2018.11.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Revised: 11/02/2018] [Accepted: 11/03/2018] [Indexed: 06/09/2023]
Abstract
Volcanic CO2 seeps were successfully used to predict coral reef response to ocean acidification, although toxic elements, often characteristic of hydrothermal vents were rarely reported. We measured the physicochemical conditions, seawater carbonate chemistry and trace elements in Tutum Bay, Papua New Guinea. There, intense emission of hydrothermal fluids and CO2 expose the coral reef to a seawater pHT between 7.6 and 7.7. Arsenic and silica were enriched by up to six times in surface seawater, while bottom concentrations were lower and thus similar to coral reefs worldwide. Manganese, cesium, iron and zinc concentrations fell into the range of other coastal environments. Our measurements suggest that Tutum Bay is a suitable site to study the response of coral reefs to high pCO2. Considering that arsenic is a common metal in hydrothermal fluids, its characterization should be included in any study that uses volcanic CO2 seeps as natural laboratories for ocean acidification.
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Affiliation(s)
- T Pichler
- Geosciences, University of Bremen, Klagenfurter Str. 2-4, 28359 Bremen, Germany.
| | - T Biscéré
- ENTROPIE IRD - Université de La Réunion - CNRS, Nouméa 98848, New Caledonia
| | - J Kinch
- National Fisheries College, PO Box 239, Kavieng, New Ireland Province 611, Papua New Guinea
| | - M Zampighi
- ENTROPIE IRD - Université de La Réunion - CNRS, Nouméa 98848, New Caledonia
| | - F Houlbrèque
- ENTROPIE IRD - Université de La Réunion - CNRS, Nouméa 98848, New Caledonia
| | - R Rodolfo-Metalpa
- ENTROPIE IRD - Université de La Réunion - CNRS, Nouméa 98848, New Caledonia
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22
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Abstract
Unprecedented mass coral bleaching events due to global warming and overall seawater pollution have been observed worldwide over the last decades. Although metals are often considered as toxic substances for corals, some are essential at nanomolar concentrations for physiological processes such as photosynthesis and antioxidant defenses. This study was designed to elucidate, the individual and combined effects of nanomolar seawater enrichment in manganese (Mn) and iron (Fe), on the main physiological traits of Stylophora pistillata, maintained under normal growth and thermal stress conditions. We provide, for the first time, evidence that Mn is a key trace element for coral symbionts, enhancing cellular chlorophyll concentrations, photosynthetic efficiency and gross photosynthetic rates at ambient temperature. Our experiment also highlights the key role of Mn in increasing coral resistance to heat stress-induced bleaching. While Mn-enriched corals did not bleach and did not reduce their rates of photosynthesis and calcification, control corals experienced significant bleaching. On the contrary to Mn, Fe enrichment not only impaired calcification but induced significant bleaching. Such information is an important step towards a better understanding of the response of corals to seawater enrichment in metals. It can also explain, to some extent, species susceptibility to environmental stress.
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23
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Kumar V, Mishra RK, Kaur G, Dutta D. Cobalt and nickel impair DNA metabolism by the oxidative stress independent pathway. Metallomics 2018; 9:1596-1609. [PMID: 29058747 DOI: 10.1039/c7mt00231a] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The oxidative stress that evolves under cobalt and nickel exposure is thought to exert toxicity, though the exact routes of such metal poisoning remain ambiguous. We revisited the metal toxicity in Escherichia coli to show that cobalt and nickel exposure at levels as low as 0.5 and 1 mM, respectively, visibly inhibits growth. We also observed that acidic conditions aggravated, while alkaline conditions alleviated the metal toxicity. Besides, 1 mM manganese, which is non-cytotoxic, as judged by the growth of E. coli, synergistically elevated cobalt and nickel stress. However, the metal toxicity did not lead to oxidative stress in E. coli. On the other hand, we show that cobalt and nickel, but not manganese, reduced the rate of DNA replication to 50% within 2 hours. Interestingly, the metal ions promoted DNA double-strand breaks but did not induce SOS repair pathways, indicating that the metal ions could block SOS induction. To test this, we show that cobalt and nickel, but not manganese, suppressed the nalidixic acid-induced SOS response. Finally, using an in vitro assay system, we demonstrated that cobalt and nickel inhibit RecBCD function, which is essential for SOS induction. Therefore, our data indicate that cobalt and nickel affect DNA replication, damage DNA, and inhibit the SOS repair pathway to exert toxicity.
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Affiliation(s)
- Vineet Kumar
- CSIR-Institute of Microbial Technology, Sector 39-A, Chandigarh 160036, India.
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Biscéré T, Ferrier-Pagès C, Grover R, Gilbert A, Rottier C, Wright A, Payri C, Houlbrèque F. Enhancement of coral calcification via the interplay of nickel and urease. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2018; 200:247-256. [PMID: 29803165 DOI: 10.1016/j.aquatox.2018.05.013] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 05/16/2018] [Accepted: 05/18/2018] [Indexed: 06/08/2023]
Abstract
Corals are the main reef builders through the formation of calcium carbonate skeletons. In recent decades, coral calcification has however been impacted by many global (climate change) and local stressors (such as destructive fishing practices and changes in water quality). In this particular context, it is crucial to identify and characterize the various factors that promote coral calcification. We thus performed the first investigation of the effect of nickel and urea enrichment on the calcification rates of three coral species. These two factors may indeed interact with calcification through the activity of urease, which catalyzes the hydrolysis of urea to produce inorganic carbon and ammonia that are involved in the calcification process. Experiments were performed with the asymbiotic coral Dendrophyllia arbuscula and, to further assess if urea and/or nickel has an indirect link with calcification through photosynthesis, results were compared with those obtained with two symbiotic corals, Acropora muricata and Pocillopora damicornis, for which we also measured photosynthetic rates. Ambient and enriched nickel (0.12 and 3.50 μg L-1) combined with ambient and enriched urea concentrations (0.26 and 5.52 μmol L-1) were tested during 4 weeks in aquaria. We demonstrate in the study that a nickel enrichment alone or combined with a urea enrichment strongly stimulated urea uptake rates of the three tested species. In addition, this enhancement of urea uptake and hydrolysis significantly increased the long-term calcification rates (i.e. growth) of the three coral species investigated, inducing a 1.49-fold to 1.64-fold increase, respectively for D. arbuscula and P. damicornis. Since calcification was greatly enhanced by nickel in the asymbiotic coral species - i.e. in absence of photosynthesis - we concluded that the effect of increased urease activity on calcification was mainly direct. According to our results, it can be assumed that corals in some fringing reefs, benefiting from seawater enriched in nickel may have advantages and might be able to use urea more effectively as a carbon and nitrogen source. It can also be suggested that urea, for which hotspots are regularly measured in reef waters may alleviate the negative consequences of thermal stress on corals.
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Affiliation(s)
- T Biscéré
- IRD, ENTROPIE (UMR 9220), BP A5, 98848 Nouméa Cedex, New Caledonia; Ginger Soproner, BP 3583, 98846 Nouméa Cedex, New Caledonia.
| | - C Ferrier-Pagès
- Centre Scientifique de Monaco, Ecophysiology Team, 8 quai Antoine 1er, 98000 Monaco, France
| | - R Grover
- Centre Scientifique de Monaco, Ecophysiology Team, 8 quai Antoine 1er, 98000 Monaco, France
| | - A Gilbert
- Ginger Soproner, BP 3583, 98846 Nouméa Cedex, New Caledonia
| | - C Rottier
- Centre Scientifique de Monaco, Ecophysiology Team, 8 quai Antoine 1er, 98000 Monaco, France
| | - A Wright
- Koniambo Nickel SAS, BP679, 98860 Koné Cedex, New Caledonia
| | - C Payri
- IRD, ENTROPIE (UMR 9220), BP A5, 98848 Nouméa Cedex, New Caledonia
| | - F Houlbrèque
- IRD, ENTROPIE (UMR 9220), BP A5, 98848 Nouméa Cedex, New Caledonia
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