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Johnston SG, Aaso T, Maher DT, Burton ED, Call M, Birch M, Schmidt J, Ferguson A. Extreme iron cycling in a coastal lake-lagoon system driven by interactions between climate and entrance management. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 935:173345. [PMID: 38782265 DOI: 10.1016/j.scitotenv.2024.173345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 05/06/2024] [Accepted: 05/16/2024] [Indexed: 05/25/2024]
Abstract
Intermittently closed and open coastal lakes and lagoons (ICOLLs) are ecologically important and hydrologically sensitive estuarine systems. We explore how extreme drought and ICOLL entrance management intersect to influence the geochemical cycling of iron. Opening the ICOLL entrance just prior to an extreme drought in 2019 led to prolonged extremely low water levels, thereby exposing intertidal/subtidal sulfidic sediments and causing oxidation of sedimentary pyrite. Subsequent reflooding of exposed sediments for ∼4 months led to extremely elevated Fe2+(aq) (>10 mM) in intertidal hyporheic porewaters, consistent with Fe2+(aq) release via pyrite oxidation and via reductive dissolution of newly-formed Fe(III) phases. Re-opening the ICOLL entrance caused a rapid fall in water levels (∼1.5 m over 7 d), driving the development of effluent groundwater gradients in the intertidal zone, thereby transporting Fe2+-rich porewater into surface sediments and surface waters. This was accompanied by co-mobilisation of some trace metals and nutrients. On contact with oxic, circumneutral-pH estuarine water, the abundant Fe2+(aq) oxidised, forming a spatially extensive accumulation of poorly crystalline Fe(III) oxyhydroxide floc (up to 25 % Fe dry weight) in shallow intertidal zone benthic sediments throughout the ICOLL. Modelling estimates ∼4050 × 103 kg of poorly-crystalline Fe was translocated into surficial sediments. The newly formed Fe(III)-oxyhydroxides serve as a metastable sink encouraging enrichment of both phosphate and various trace metal(loid)s in near-surface sediments, which may have consequences for future cycling of nutrients, metals and ICOLL ecological function. The additional Fe also may enhance ICOLL sensitivity to similar future drought events by encouraging pyrite formation in shallow (<5 cm) benthic sediments. This system-wide translocation of Fe from deeper sediments into surficial benthic sediments represents a form of geochemical hysteresis with an uncertain recovery trajectory. This study demonstrates how climate extremes can interact with anthropogenic management to amplify ICOLL hydrological oscillations and influence biogeochemistry in complex ways.
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Affiliation(s)
- Scott G Johnston
- Catchments, Coasts and Communities Cluster, Southern Cross University, Lismore, NSW 2480, Australia; Faculty of Science and Engineering, Southern Cross University, Lismore, NSW 2480, Australia.
| | - Thor Aaso
- Soil Conservation Service, 13 Short Street, Port Macquarie, NSW, Australia
| | - Damien T Maher
- Catchments, Coasts and Communities Cluster, Southern Cross University, Lismore, NSW 2480, Australia; Faculty of Science and Engineering, Southern Cross University, Lismore, NSW 2480, Australia
| | - Edward D Burton
- Catchments, Coasts and Communities Cluster, Southern Cross University, Lismore, NSW 2480, Australia; Faculty of Science and Engineering, Southern Cross University, Lismore, NSW 2480, Australia
| | - Mitchell Call
- Catchments, Coasts and Communities Cluster, Southern Cross University, Lismore, NSW 2480, Australia; Faculty of Science and Engineering, Southern Cross University, Lismore, NSW 2480, Australia
| | - Mathew Birch
- Soil Conservation Service, 13 Short Street, Port Macquarie, NSW, Australia
| | - John Schmidt
- Science Division, Department of Climate Change, Energy, the Environment and Water, NSW, Australia
| | - Angus Ferguson
- Science Division, Department of Climate Change, Energy, the Environment and Water, NSW, Australia
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Shen Y, Pan Y, Chen Q, Sun Z, Cai WJ, Jiang ZP, Qu F, Wang X, Chen Y. Development of SPEEK-Coated IrO x Sensor for High-Biomass Aquatic pH Monitoring. ACS Sens 2024; 9:3367-3376. [PMID: 38885468 DOI: 10.1021/acssensors.4c00704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/20/2024]
Abstract
Instability is a key challenge for current pH sensors in practical applications, especially in aquatic environments with high biomass and redox substances. Herein, we present a novel approach that uses a highly stable IrOx sensing layer enveloped in a composite film of SPEEK doped with a silicon-stabilized ionic liquid (SP-IrOx). This design mitigates drift due to sensitive layer variations and minimizes interference from complex external conditions. After exhibiting robustness under moderately reducing conditions caused by S2-, I-, and ascorbic acid, the SP-IrOx sensor's efficacy was validated through real-time pH measurements in demanding aquatic settings. These included laboratory algal culture medium, sediment substrates, and mussel aquaculture areas. The sensor sustained accuracy and stability over extended periods of 6-8 days when compared to calibrated commercial electrodes. The deviations from reference samples were minimal, with a variance of no more than 0.03 pH units in mussel aquaculture areas (n = 17) and 0.07 pH units in an algal culture medium (n = 37). As a potentiometric, this solid-state electrode features a compact structure and low energy consumption, making it an economical and low-maintenance solution for precise pH monitoring in diverse challenging environments with high biomass and turbidity.
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Affiliation(s)
- Yunwen Shen
- Ocean College, Zhejiang University, Zhoushan 316021, China
| | - Yiwen Pan
- Ocean College, Zhejiang University, Zhoushan 316021, China
- Ocean Research Center of Zhoushan, Zhejiang University, Zhoushan 316021, China
| | - Qixian Chen
- Ocean College, Zhejiang University, Zhoushan 316021, China
| | - Zhentao Sun
- Ocean College, Zhejiang University, Zhoushan 316021, China
| | - Wei-Jun Cai
- School of Marine Science and Policy, University of Delaware, Newark, Delaware 19716, United States
| | - Zong-Pei Jiang
- Ocean College, Zhejiang University, Zhoushan 316021, China
| | - Fengzhong Qu
- Ocean College, Zhejiang University, Zhoushan 316021, China
| | - Xiaoping Wang
- Ocean College, Zhejiang University, Zhoushan 316021, China
| | - Ying Chen
- Ocean College, Zhejiang University, Zhoushan 316021, China
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Hao L, Sanada A, Chi B, Xiong B, Maruya Y, Yano S. Long-term developments in seasonal hypoxia and response to climate change: A three-decade modeling study in the Ariake Sea, Japan. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 929:172471. [PMID: 38615772 DOI: 10.1016/j.scitotenv.2024.172471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 04/11/2024] [Accepted: 04/11/2024] [Indexed: 04/16/2024]
Abstract
Hypoxia in the Ariake Sea, Japan, is steadily increasing in both duration and spatial coverage. Hypoxia, defined as dissolved oxygen (DO) below 3 mg/L, is strongly associated with the amplified frequency of extreme rainfall events driven by climate change, which poses a mounting threat to marine ecosystems on a global scale. In this study, we employed a general three-dimensional (3-D) hydrodynamic coastal model and a phytoplankton-based ecosystem model to identify the potential cause of seasonal hypoxic events over three decades. The results indicated a substantial decrease in bottom DO levels from 1992 to 2021, with the rate of increase in hypoxic area being 8 km2/yr (95 % CI: -0.38, 16.2) and the anoxic area increasing from almost non-existent to 100 km2. Notably, among various environmental drivers, increased river discharge was identified as a pivotal factor in the occurrence of hypoxia. Large-scale river discharge events can potentially increase water stratification, leading to the formation of hypoxia. River discharge volume and the duration of bottom hypoxia in the Ariake Sea were correlated. The duration of hypoxia was strongly associated with river discharge magnitude, with correlation coefficients ranging from 0.56 to 0.82 across six observational stations. Furthermore, analysis of varied simulated environmental factors over multiple years revealed diverse responses to climate change, indicating that the Ariake Sea is prone to experiencing a decline in its physical and water quality conditions.
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Affiliation(s)
- Lin Hao
- Department of Civil Engineering, Kyushu University, Fukuoka, Japan
| | - Ai Sanada
- Department of Civil Engineering, Kyushu University, Fukuoka, Japan
| | - Baixin Chi
- Department of Maritime Engineering, Kyushu University, Fukuoka, Japan
| | - Bing Xiong
- College of Life and Environmental Science, Wenzhou University, Wenzhou, China
| | - Yasuyuki Maruya
- Department of Civil Engineering, Kyushu University, Fukuoka, Japan
| | - Shinichiro Yano
- Department of Civil Engineering, Kyushu University, Fukuoka, Japan.
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Montúfar-Romero M, Valenzuela-Muñoz V, Valenzuela-Miranda D, Gallardo-Escárate C. Hypoxia in the Blue Mussel Mytilus chilensis Induces a Transcriptome Shift Associated with Endoplasmic Reticulum Stress, Metabolism, and Immune Response. Genes (Basel) 2024; 15:658. [PMID: 38927594 PMCID: PMC11203016 DOI: 10.3390/genes15060658] [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: 03/28/2024] [Revised: 05/01/2024] [Accepted: 05/15/2024] [Indexed: 06/28/2024] Open
Abstract
The increase in hypoxia events, a result of climate change in coastal and fjord ecosystems, impacts the health and survival of mussels. These organisms deploy physiological and molecular responses as an adaptive mechanism to maintain cellular homeostasis under environmental stress. However, the specific effects of hypoxia on mussels of socioeconomic interest, such as Mytilus chilensis, are unknown. Using RNA-seq, we investigated the transcriptomic profiles of the gills, digestive gland, and adductor muscle of M. chilensis under hypoxia (10 days at 2 mg L-1) and reoxygenation (10 days at 6 mg L-1). There were 15,056 differentially expressed transcripts identified in gills, 11,864 in the digestive gland, and 9862 in the adductor muscle. The response varied among tissues, showing chromosomal changes in Chr1, Chr9, and Chr10 during hypoxia. Hypoxia regulated signaling genes in the Toll-like, mTOR, citrate cycle, and apoptosis pathways in gills, indicating metabolic and immunological alterations. These changes suggest that hypoxia induced a metabolic shift in mussels, reducing reliance on aerobic respiration and increasing reliance on anaerobic metabolism. Furthermore, hypoxia appeared to suppress the immune response, potentially increasing disease susceptibility, with negative implications for the mussel culture industry and natural bed populations. This study provides pivotal insights into metabolic and immunological adaptations to hypoxia in M. chilensis, offering candidate genes for adaptive traits.
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Affiliation(s)
- Milton Montúfar-Romero
- Interdisciplinary Center for Aquaculture Research (INCAR), Universidad de Concepción, P.O. Box 160-C, Concepción 4030000, Chile; (M.M.-R.); (V.V.-M.); (D.V.-M.)
- Biotecnology Center, Universidad de Concepción, Concepción 4030000, Chile
- Instituto Público de Investigación de Acuicultura y Pesca (IPIAP), Guayaquil 090314, Ecuador
| | - Valentina Valenzuela-Muñoz
- Interdisciplinary Center for Aquaculture Research (INCAR), Universidad de Concepción, P.O. Box 160-C, Concepción 4030000, Chile; (M.M.-R.); (V.V.-M.); (D.V.-M.)
- Escuela de Medicina Veterinaria, Facultad de Ciencias de la Naturaleza, Universidad San Sebastián, Concepción 4030000, Chile
| | - Diego Valenzuela-Miranda
- Interdisciplinary Center for Aquaculture Research (INCAR), Universidad de Concepción, P.O. Box 160-C, Concepción 4030000, Chile; (M.M.-R.); (V.V.-M.); (D.V.-M.)
- Biotecnology Center, Universidad de Concepción, Concepción 4030000, Chile
| | - Cristian Gallardo-Escárate
- Interdisciplinary Center for Aquaculture Research (INCAR), Universidad de Concepción, P.O. Box 160-C, Concepción 4030000, Chile; (M.M.-R.); (V.V.-M.); (D.V.-M.)
- Biotecnology Center, Universidad de Concepción, Concepción 4030000, Chile
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Scanes E, Kutti T, Fang JKH, Johnston EL, Ross PM, Bannister RJ. The long-lived deep-sea bivalve Acesta excavata is sensitive to the dual stressors of sediment and warming. MARINE POLLUTION BULLETIN 2024; 202:116323. [PMID: 38598927 DOI: 10.1016/j.marpolbul.2024.116323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 03/21/2024] [Accepted: 03/28/2024] [Indexed: 04/12/2024]
Abstract
Human influence in the deep-sea is increasing as mining and drilling operations expand, and waters warm because of climate change. Here, we investigate how the long-lived deep-sea bivalve, Acesta excavata responds to sediment pollution and/or acute elevated temperatures. A. excavata were exposed to suspended sediment, acute warming, and a combination of the two treatments for 40 days. We measured O2 consumption, NH4+ release, Total Organic Carbon (TOC), and lysosomal membrane stability (LMS). We found suspended sediment and warming interacted to decrease O:N ratios, while sediment as a single stressor increased the release of TOC and warming increased NH4+ release in A. excavata. Warming also increased levels of LMS. We found A. excavata used protein catabolism to meet elevated energetic demands indicating a low tolerance to stress. A. excavata has limited capacity for physiological responses to the stressors of warming and sediment which may lead to decreased fitness of A. excavata.
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Affiliation(s)
- Elliot Scanes
- School of Life and Environmental Science, The University of Sydney, Camperdown, 2006, NSW, Australia; Climate Change Cluster, University of Technology Sydney, Ultimo, 2007, NSW, Australia.
| | - Tina Kutti
- Institute of Marine Research, PO Box 1870, 5817 Bergen, Norway
| | - James K H Fang
- Department of Food Science and Nutrition, and Research Institute for Future Food, The Hong Kong Polytechnic University, Hung Hom, Hong Kong; State Key Laboratory of Marine Pollution, City University of Hong Kong, Kowloon Tong, Hong Kong; Evolution and Ecology Research Centre, School of Biological and Environmental Sciences, the University of New South Wales, Sydney, NSW 2052, Australia
| | - Emma L Johnston
- School of Life and Environmental Science, The University of Sydney, Camperdown, 2006, NSW, Australia; State Key Laboratory of Marine Pollution, City University of Hong Kong, Kowloon Tong, Hong Kong; Evolution and Ecology Research Centre, School of Biological and Environmental Sciences, the University of New South Wales, Sydney, NSW 2052, Australia
| | - Pauline M Ross
- School of Life and Environmental Science, The University of Sydney, Camperdown, 2006, NSW, Australia
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Fathy RF. Divergent perspectives on the synergistic impacts of thermal-chemical stress on aquatic biota within the framework of climate change scenarios. CHEMOSPHERE 2024; 355:141810. [PMID: 38554872 DOI: 10.1016/j.chemosphere.2024.141810] [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: 01/25/2024] [Revised: 03/23/2024] [Accepted: 03/25/2024] [Indexed: 04/02/2024]
Abstract
Climate change, including global warming, leads to rising temperatures in aquatic ecosystems, which is one of the numerous repercussions it brings. Furthermore, water warming can indirectly impact aquatic organisms by modifying the toxicity levels of pollutants. Nevertheless, numerous studies have explored the potential impacts of chemical stress on aquatic biota, but little is known about how such chemicals and toxins interact with climate change factors, especially elevated temperatures. As such, this review paper focuses on exploring the potential effects of thermochemical stress on a wide sector of aquatic organisms, including aquatic vertebrates and invertebrates, in various aquatic ecosystems (freshwater and marine systems). Herein, the objective of this study is to explore the most up-to-date the impact of water warming (without chemical stress) and thermochemical stress on various biochemical and physiological processes in aquatic fauna and how this greatly affects biodiversity and sustainability. Therefore, there is a growing need to understand and evaluate this synergistic mechanism and its potential hazardous impacts. However, we need further investigations and scientific reports to address this serious environmental issue in order to confront anthropogenic pollutants regarding climate change and chemical pollution risks in the near future and subsequently find sustainable solutions for them.
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Affiliation(s)
- Ragaa F Fathy
- Hydrobiology Department, Veterinary Research Institute, National Research Centre (NRC), 33 El-Buhouth St, 12622 Dokki, Giza, Egypt.
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7
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Li X, Qi M, Li Q, Wu B, Fu Y, Liang X, Yin G, Zheng Y, Dong H, Liu M, Hou L. Acidification Offset Warming-Induced Increase in N 2O Production in Estuarine and Coastal Sediments. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:4989-5002. [PMID: 38442002 DOI: 10.1021/acs.est.3c10691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/07/2024]
Abstract
Global warming and acidification, induced by a substantial increase in anthropogenic CO2 emissions, are expected to have profound impacts on biogeochemical cycles. However, underlying mechanisms of nitrous oxide (N2O) production in estuarine and coastal sediments remain rarely constrained under warming and acidification. Here, the responses of sediment N2O production pathways to warming and acidification were examined using a series of anoxic incubation experiments. Denitrification and N2O production were largely stimulated by the warming, while N2O production decreased under the acidification as well as the denitrification rate and electron transfer efficiency. Compared to warming alone, the combination of warming and acidification decreased N2O production by 26 ± 4%, which was mainly attributed to the decline of the N2O yield by fungal denitrification. Fungal denitrification was mainly responsible for N2O production under the warming condition, while bacterial denitrification predominated N2O production under the acidification condition. The reduced site preference of N2O under acidification reflects that the dominant pathways of N2O production were likely shifted from fungal to bacterial denitrification. In addition, acidification decreased the diversity and abundance of nirS-type denitrifiers, which were the keystone taxa mediating the low N2O production. Collectively, acidification can decrease sediment N2O yield through shifting the responsible production pathways, partly counteracting the warming-induced increase in N2O emissions, further reducing the positive climate warming feedback loop.
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Affiliation(s)
- Xiaofei Li
- State Key Laboratory of Estuarine and Coastal Research, Yangtze Delta Estuarine Wetland Ecosystem Observation and Research Station, Ministry of Education & Shanghai, East China Normal University, Shanghai 200241, China
- Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographic Sciences, East China Normal University, Shanghai 200241, China
| | - Mengting Qi
- Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographic Sciences, East China Normal University, Shanghai 200241, China
| | - Qiuxuan Li
- Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographic Sciences, East China Normal University, Shanghai 200241, China
| | - Boshuang Wu
- State Key Laboratory of Estuarine and Coastal Research, Yangtze Delta Estuarine Wetland Ecosystem Observation and Research Station, Ministry of Education & Shanghai, East China Normal University, Shanghai 200241, China
| | - Yuxuan Fu
- State Key Laboratory of Estuarine and Coastal Research, Yangtze Delta Estuarine Wetland Ecosystem Observation and Research Station, Ministry of Education & Shanghai, East China Normal University, Shanghai 200241, China
| | - Xia Liang
- State Key Laboratory of Estuarine and Coastal Research, Yangtze Delta Estuarine Wetland Ecosystem Observation and Research Station, Ministry of Education & Shanghai, East China Normal University, Shanghai 200241, China
| | - Guoyu Yin
- Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographic Sciences, East China Normal University, Shanghai 200241, China
| | - Yanling Zheng
- Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographic Sciences, East China Normal University, Shanghai 200241, China
| | - Hongpo Dong
- State Key Laboratory of Estuarine and Coastal Research, Yangtze Delta Estuarine Wetland Ecosystem Observation and Research Station, Ministry of Education & Shanghai, East China Normal University, Shanghai 200241, China
| | - Min Liu
- Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographic Sciences, East China Normal University, Shanghai 200241, China
| | - Lijun Hou
- State Key Laboratory of Estuarine and Coastal Research, Yangtze Delta Estuarine Wetland Ecosystem Observation and Research Station, Ministry of Education & Shanghai, East China Normal University, Shanghai 200241, China
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8
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Giles AB, Correa RE, Santos IR, Kelaher B. Using multispectral drones to predict water quality in a subtropical estuary. ENVIRONMENTAL TECHNOLOGY 2024; 45:1300-1312. [PMID: 36322116 DOI: 10.1080/09593330.2022.2143284] [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: 03/31/2022] [Accepted: 10/27/2022] [Indexed: 06/16/2023]
Abstract
Drones are revolutionising earth system observations, and are increasingly used for high resolution monitoring of water quality. The objective of this research was to test whether drone-based multispectral imagery could predict important water quality parameters in an ICOLL (intermittently closed and opened lake or lagoon). Three water quality sampling campaigns were undertaken, measuring temperature, salinity, pH, dissolved oxygen (DO), chlorophyll (CHL), turbidity, total suspended sediments (TSS), coloured dissolved organic matter (CDOM), green algae, crytophyta, diatoms, bluegreen algae and total algal concentrations. DistilM statistical analyses were conducted to reveal the bands accounting for the most variation across all water quality data, then linear correlations between specific band/band ratios and individual water quality parameters were performed. DistilM analyses revealed the NIR band accounted for most variation in March, the Green band in April and the RE band in May, and showed that the most important contributors varied significantly among campaigns and variables. Significant linear correlations with R2 > 0.4 were obtained for eleven of the water quality parameters tested, with the strongest correlation obtained for CHL and the green band (R2 = 0.72). The relative importance of predictor bands and observed water quality parameters varied temporally. We conclude that drones with a multispectral sensor can produce useful 'snapshot' prediction maps for a range of water quality parameters, such as chlorophyll, bluegreen algae and dissolved oxygen. However, a single model was insufficient to reproduce the temporal variation of water parameters in dynamic estuarine systems.
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Affiliation(s)
- Anna B Giles
- National Marine Science Centre, Southern Cross University, Coffs Harbour, Australia
| | - Rogger E Correa
- National Marine Science Centre, Southern Cross University, Coffs Harbour, Australia
- Corporacion Merceditas - Merceditas Corporation, Medellín, Colombia
| | - Isaac R Santos
- National Marine Science Centre, Southern Cross University, Coffs Harbour, Australia
- Department of Marine Sciences, University of Gothenburg, Gothenburg, Sweden
| | - Brendan Kelaher
- National Marine Science Centre, Southern Cross University, Coffs Harbour, Australia
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Oleynik HA, Bizzarro JJ, Hale EA, Carlisle AB. Environmental drivers of biogeography and community structure in a Mid-Atlantic estuary. Oecologia 2024; 204:543-557. [PMID: 38351269 PMCID: PMC10980636 DOI: 10.1007/s00442-023-05500-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Accepted: 12/10/2023] [Indexed: 04/01/2024]
Abstract
Estuaries include some of the most productive yet anthropogenically impacted marine ecosystems on the planet, and provide critical habitat to many ecologically and economically important marine species. In order to elucidate ecological function in estuaries, we must understand what factors drive community dynamics. Delaware Bay is the third largest estuary in the United States and hosts over 200 species of migrant and resident fishes and invertebrates. The Delaware Division of Fish and Wildlife has conducted two long-term trawl surveys at monthly intervals in Delaware Bay since 1966. The two surveys collect data on environmental conditions, species composition, and number of fishes and macroinvertebrates across different size classes and life histories. Using a suite of multivariate approaches including hierarchical cluster analysis, canonical correlation analysis, and permutational multivariate analysis of variance, we characterized the fish and macroinvertebrate community in Delaware Bay and found that community composition and environmental conditions varied across spatial and seasonal scales. We identified four distinct biogeographic regions, based on environmental conditions and community composition, which were consistent across surveys. We found that the community was driven primarily by gradients in temperature and salinity and that abundant, frequently occurring species in the Bay have well-defined environmental associations. Our work represents the first attempt to use an existing historical survey to better understand how environmental parameters influence diversity and distribution of macrofauna within Delaware Bay, providing insight into how abiotic variables, influenced by climate, may impact the Delaware Bay ecosystem and similar estuarine ecosystems worldwide.
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Affiliation(s)
- Haley A Oleynik
- School of Marine Science and Policy, College of Earth, Ocean and Environment, University of Delaware, 700 Pilottown Road, Lewes, DE, 19958, USA.
| | - Joseph J Bizzarro
- Fisheries Collaborative Program, Cooperative Institute for Marine Ecosystems and Climate, University of California, Santa Cruz and Fisheries Ecology Division Southwest Fisheries Science Center, National Marine Fisheries Service, 110 McAllister Way, Santa Cruz, CA, 95060, USA
| | - Edward A Hale
- Delaware Sea Grant, School of Marine Science and Policy, College of Earth, Ocean and Environment, University of Delaware, 700 Pilottown Road, Lewes, DE, 19958, USA
| | - Aaron B Carlisle
- School of Marine Science and Policy, College of Earth, Ocean and Environment, University of Delaware, 700 Pilottown Road, Lewes, DE, 19958, USA
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10
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Enriquez-Urzelai U, Gvoždík L. Impacts of behaviour and acclimation of metabolic rate on energetics in sheltered ectotherms: a climate change perspective. Proc Biol Sci 2024; 291:20232152. [PMID: 38378146 PMCID: PMC10878825 DOI: 10.1098/rspb.2023.2152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Accepted: 01/17/2024] [Indexed: 02/22/2024] Open
Abstract
Many ectothermic organisms counter harsh abiotic conditions by seeking refuge in underground retreats. Variations in soil hydrothermal properties within these retreats may impact their energy budget, survival and population dynamics. This makes retreat site choice a critical yet understudied component of their strategies for coping with climate change. We used a mechanistic modelling approach to explore the implications of behavioural adjustments and seasonal acclimation of metabolic rate on retreat depth and the energy budget of ectotherms, considering both current and future climate conditions. We used a temperate amphibian, the alpine newt (Ichthyosaura alpestris), as a model species. Our simulations predict an interactive influence of different thermo- and hydroregulatory strategies on the vertical positioning of individuals in underground refuges. The adoption of a particular strategy largely determines the impact of climate change on retreat site choice. Additionally, we found that, given the behavioural thermoregulation/hydroregulation and metabolic acclimation patterns considered, behaviour within the retreat has a greater impact on ectotherm energetics than acclimation of metabolic rate under different climate change scenarios. We conclude that further empirical research aimed at determining ectotherm behavioural strategies during both surface activity and inactivity is needed to understand their population dynamics and species viability under climate change.
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Affiliation(s)
- Urtzi Enriquez-Urzelai
- Czech Academy of Sciences, Institute of Vertebrate Biology, Květná 8, 60300 Brno, Czech Republic
| | - Lumír Gvoždík
- Czech Academy of Sciences, Institute of Vertebrate Biology, Květná 8, 60300 Brno, Czech Republic
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11
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Parker LM, Scanes E, O'Connor WA, Dove M, Elizur A, Pörtner HO, Ross PM. Resilience against the impacts of climate change in an ecologically and economically significant native oyster. MARINE POLLUTION BULLETIN 2024; 198:115788. [PMID: 38056289 DOI: 10.1016/j.marpolbul.2023.115788] [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: 06/06/2023] [Revised: 11/08/2023] [Accepted: 11/11/2023] [Indexed: 12/08/2023]
Abstract
Climate change is acidifying and warming our oceans, at an unprecedented rate posing a challenge for marine invertebrates vital across the globe for ecological services and food security. Here we show it is possible for resilience to climate change in an ecologically and economically significant oyster without detrimental effects to the energy budget. We exposed 24 pair-mated genetically distinct families of the Sydney rock oyster, Saccostrea glomerata to ocean acidification and warming for 4w and measured their resilience. Resilience was identified as the capacity to defend their acid-base balance without a loss of energy available for Scope for Growth (SFG). Of the 24 families, 13 were better able to defend their acid-base balance while eight had no loss of energy availability with a positive SFG. This study has found oyster families with reslience against climate change without a loss of SFG, is an essential mitigation strategy, in a critical mollusc.
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Affiliation(s)
- Laura M Parker
- School of Biological, Earth and Environmental Sciences, The University of New South Wales, Kensington, Sydney, New South Wales 2052, Australia
| | - Elliot Scanes
- School of Life and Environmental Sciences, The University of Sydney, Camperdown, Sydney, New South Wales 2006, Australia; Climate Change Cluster, University of Technology, Ultimo, Sydney, New South Wales 2007, Australia
| | - Wayne A O'Connor
- NSW Department of Primary Industries, Port Stephens Fisheries Institute, Taylors Beach, New South Wales 2316, Australia
| | - Michael Dove
- NSW Department of Primary Industries, Port Stephens Fisheries Institute, Taylors Beach, New South Wales 2316, Australia
| | - Abigail Elizur
- Centre for Bioinnovation, University of the Sunshine Coast, Sippy Downs, Queensland 4556, Australia
| | - Hans-Otto Pörtner
- Alfred Wegener Institute for Polar and Marine Research, Bremerhaven 27570, Germany
| | - Pauline M Ross
- School of Life and Environmental Sciences, The University of Sydney, Camperdown, Sydney, New South Wales 2006, Australia.
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12
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A K P, M M, Rajamanickam S, Sivarethinamohan S, Gaddam MKR, Velusamy P, R G, Ravindiran G, Gurugubelli TR, Muniasamy SK. Impact of climate change and anthropogenic activities on aquatic ecosystem - A review. ENVIRONMENTAL RESEARCH 2023; 238:117233. [PMID: 37793591 DOI: 10.1016/j.envres.2023.117233] [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: 06/24/2023] [Revised: 09/12/2023] [Accepted: 09/26/2023] [Indexed: 10/06/2023]
Abstract
All living things depend on their natural environment, either directly or indirectly, for their high quality of life, growth, nutrition, and development. Due to the fast emissions of greenhouse gases (GHGs), the Earth's climate system is being negatively impacted by global warming. Stresses caused by climate change, such as rising and hotter seas, increased droughts and floods, and acrid waters, threaten the world's most populated areas and aquatic ecosystems. As a result, the aquatic ecosystems of the globe are quickly reaching hazardous conditions. Marine ecosystems are essential parts of the world's environment and provide several benefits to the human population, such as water for drinking and irrigation, leisure activities, and habitat for commercially significant fisheries. Although local human activities have influenced coastal zones for millennia, it is still unclear how these impacts and stresses from climate change may combine to endanger coastal ecosystems. Recent studies have shown that rising levels of greenhouse gases are causing ocean systems to experience conditions not seen in several million years, which may cause profound and irreversible ecological shifts. Ocean productivity has declined, food web dynamics have changed, habitat-forming species are less common, species ranges have changed, and disease prevalence has increased due to human climate change. We provide an outline of the interaction between global warming and the influence of humans along the coastline. This review aims to demonstrate the significance of long-term monitoring, the creation of ecological indicators, and the applications of understanding how aquatic biodiversity and ecosystem functioning respond to global warming. This review discusses the effects of current climate change on marine biological processes both now and in the future, describes present climate change concerning historical change, and considers the potential roles aquatic systems could play in mitigating the effects of global climate change.
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Affiliation(s)
- Priya A K
- Department of Chemical Engineering, KPR Institute of Engineering and Technology, Coimbatore, Tamilnadu, India; Centre for Nanoscience and Technology, KPR Institute of Engineering and Technology, Coimbatore, Tamilnadu, India.
| | - Muruganandam M
- Project Prioritization, Monitoring & Evaluation and Knowledge Management Unit, ICAR-Indian Institute of Soil & Water Conservation (ICAR-IISWC), Dehradun, India.
| | - Sivarethinamohan Rajamanickam
- Symbiosis Centre for Management Studies (Constituent of Symbiosis International Deemed University), Bengaluru - 560 100, Karnataka, India.
| | - Sujatha Sivarethinamohan
- Department of Civil Engineering, K. Ramakrishnan College of Technology, Trichy, Tamil Nadu, 621 112, India.
| | | | - Priya Velusamy
- Department of Civil Engineering, GMR Institute of Technology, Rajam, Andhra Pradesh, India.
| | - Gomathi R
- Department of Civil Engineering, KPR Institute of Engineering and Technology, Coimbatore, Tamilnadu, India.
| | - Gokulan Ravindiran
- Department of Civil Engineering, VNR Vignana Jyothi Institute of Engineering and Technology, Hyderabad, 500090, Telangana, India.
| | | | - Senthil Kumar Muniasamy
- Department of Biotechnology, Karpaga Vinayaga College of Engineering and Technology, Chengalpattu, 603308, Tamilnadu, India.
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13
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Nimbs MJ, Champion C, Lobos SE, Malcolm HA, Miller AD, Seinor K, Smith SD, Knott N, Wheeler D, Coleman MA. Genomic analyses indicate resilience of a commercially and culturally important marine gastropod snail to climate change. PeerJ 2023; 11:e16498. [PMID: 38025735 PMCID: PMC10676721 DOI: 10.7717/peerj.16498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Accepted: 10/31/2023] [Indexed: 12/01/2023] Open
Abstract
Genomic vulnerability analyses are being increasingly used to assess the adaptability of species to climate change and provide an opportunity for proactive management of harvested marine species in changing oceans. Southeastern Australia is a climate change hotspot where many marine species are shifting poleward. The turban snail, Turbo militaris is a commercially and culturally harvested marine gastropod snail from eastern Australia. The species has exhibited a climate-driven poleward range shift over the last two decades presenting an ongoing challenge for sustainable fisheries management. We investigate the impact of future climate change on T. militaris using genotype-by-sequencing to project patterns of gene flow and local adaptation across its range under climate change scenarios. A single admixed, and potentially panmictic, demographic unit was revealed with no evidence of genetic subdivision across the species range. Significant genotype associations with heterogeneous habitat features were observed, including associations with sea surface temperature, ocean currents, and nutrients, indicating possible adaptive genetic differentiation. These findings suggest that standing genetic variation may be available for selection to counter future environmental change, assisted by widespread gene flow, high fecundity and short generation time in this species. We discuss the findings of this study in the content of future fisheries management and conservation.
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Affiliation(s)
- Matt J. Nimbs
- National Marine Science Centre, Southern Cross University, Coffs Harbour, New South Wales, Australia
- NSW Department of Primary Industries, Fisheries, National Marine Science Centre, Coffs Harbour, Australia
| | - Curtis Champion
- National Marine Science Centre, Southern Cross University, Coffs Harbour, New South Wales, Australia
- NSW Department of Primary Industries, Fisheries, National Marine Science Centre, Coffs Harbour, Australia
| | - Simon E. Lobos
- Deakin Genomics Centre, Deakin University, Geelong, Vic, Australia
- School of Life and Environmental Sciences, Deakin University, Warrnambool, Vic, Australia
| | - Hamish A. Malcolm
- NSW Department of Primary Industries, Fisheries Research, Coffs Harbour, NSW, Australia
| | - Adam D. Miller
- Deakin Genomics Centre, Deakin University, Geelong, Vic, Australia
- School of Life and Environmental Sciences, Deakin University, Warrnambool, Vic, Australia
| | - Kate Seinor
- National Marine Science Centre, Southern Cross University, Coffs Harbour, New South Wales, Australia
| | - Stephen D.A. Smith
- National Marine Science Centre, Southern Cross University, Coffs Harbour, New South Wales, Australia
- Aquamarine Australia, Mullaway, NSW, Australia
| | - Nathan Knott
- NSW Department of Primary Industries, Fisheries Research, Huskisson, NSW, Australia
| | - David Wheeler
- NSW Department of Primary Industries, Orange, NSW, Australia
| | - Melinda A. Coleman
- National Marine Science Centre, Southern Cross University, Coffs Harbour, New South Wales, Australia
- NSW Department of Primary Industries, Fisheries, National Marine Science Centre, Coffs Harbour, Australia
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14
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Ajani PA, Savela H, Kahlke T, Harrison D, Jeffries T, Kohli GS, Verma A, Laczka O, Doblin MA, Seymour JR, Larsson ME, Potts J, Scanes P, Gribben PE, Harrison L, Murray SA. Response of planktonic microbial assemblages to disturbance in an urban sub-tropical estuary. WATER RESEARCH 2023; 243:120371. [PMID: 37506634 DOI: 10.1016/j.watres.2023.120371] [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: 02/14/2023] [Revised: 06/26/2023] [Accepted: 07/15/2023] [Indexed: 07/30/2023]
Abstract
Microbes are sensitive indicators of estuarine processes because they respond rapidly to dynamic disturbance events. As most of the world's population lives in urban areas and climate change-related disturbance events are becoming more frequent, estuaries bounded by cities are experiencing increasing stressors, at the same time that their ecosystem services are required more than ever. Here, using a multidisciplinary approach, we determined the response of planktonic microbial assemblages in response to seasonality and a rainfall disturbance in an urban estuary bounded by Australia's largest city, Sydney. We used molecular barcoding (16S, 18S V4 rRNA) and microscopy-based identification to compare microbial assemblages at locations with differing characteristics and urbanisation histories. Across 142 samples, we identified 8,496 unique free-living bacterial zOTUs, 8,175 unique particle associated bacterial zOTUs, and 1,920 unique microbial eukaryotic zOTUs. Using microscopy, we identified only the top <10% abundant, larger eukaryotic taxa (>10 µm), however quantification was possible. The site with the greater history of anthropogenic impact showed a more even community of associated bacteria and eukaryotes, and a significant increase in dissolved inorganic nitrogen following rainfall, when compared to the more buffered site. This coincided with a reduced proportional abundance of Actinomarina and Synechococcus spp., a change in SAR 11 clades, and an increase in the eukaryotic microbial groups Dinophyceae, Mediophyceae and Bathyoccocaceae, including a temporary dominance of the harmful algal bloom dinoflagellate Prorocentrum cordatum (syn. P. minimum). Finally, a validated hydrodynamic model of the estuary supported these results, showing that the more highly urbanised and upstream location consistently experienced a higher magnitude of salinity reduction in response to rainfall events during the study period. The best abiotic variables to explain community dissimilarities between locations were TDP, PN, modelled temperature and salinity (r = 0.73) for the free living bacteria, TP for the associated bacteria (r = 0.43), and modelled temperature (r = 0.28) for the microbial eukaryotic communities. Overall, these results show that a minor disturbance such as a brief rainfall event can significantly shift the microbial assemblage of an anthropogenically impacted area within an urban estuary to a greater degree than a seasonal change, but may result in a lesser response to the same disturbance at a buffered, more oceanic influenced location. Fine scale research into the factors driving the response of microbial communities in urban estuaries to climate related disturbances will be necessary to understand and implement changes to maintain future estuarine ecosystem services.
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Affiliation(s)
- Penelope A Ajani
- University of Technology Sydney, School of Life Sciences, 15 Broadway, Ultimo NSW 2007, Australia; Sydney Institute of Marine Sciences, Mosman, New South Wales 2088, Australia.
| | - Henna Savela
- University of Technology Sydney, School of Life Sciences, 15 Broadway, Ultimo NSW 2007, Australia
| | - Tim Kahlke
- University of Technology Sydney, School of Life Sciences, 15 Broadway, Ultimo NSW 2007, Australia; University of Technology Sydney, Climate Change Cluster, 15 Broadway, Ultimo NSW 2007, Australia
| | - Daniel Harrison
- National Marine Science Centre, Southern Cross University, 2 Bay Drive, Coffs Harbour NSW 2450, Australia
| | - Thomas Jeffries
- Western Sydney University, School of Science, Locked Bag 1797, Penrith NSW 2751, Australia
| | - Gurjeet S Kohli
- University of Technology Sydney, Climate Change Cluster, 15 Broadway, Ultimo NSW 2007, Australia
| | - Arjun Verma
- University of Technology Sydney, School of Life Sciences, 15 Broadway, Ultimo NSW 2007, Australia; University of Technology Sydney, Climate Change Cluster, 15 Broadway, Ultimo NSW 2007, Australia
| | - Olivier Laczka
- University of Technology Sydney, Climate Change Cluster, 15 Broadway, Ultimo NSW 2007, Australia
| | - Martina A Doblin
- Sydney Institute of Marine Sciences, Mosman, New South Wales 2088, Australia; University of Technology Sydney, Climate Change Cluster, 15 Broadway, Ultimo NSW 2007, Australia
| | - Justin R Seymour
- University of Technology Sydney, Climate Change Cluster, 15 Broadway, Ultimo NSW 2007, Australia
| | - Michaela E Larsson
- University of Technology Sydney, Climate Change Cluster, 15 Broadway, Ultimo NSW 2007, Australia
| | - Jaimie Potts
- Science, Economics and Insights Division, NSW Department of Planning and Environment
| | - Peter Scanes
- Science, Economics and Insights Division, NSW Department of Planning and Environment
| | - Paul E Gribben
- Sydney Institute of Marine Sciences, Mosman, New South Wales 2088, Australia; University of NSW, Centre for Marine Science and Innovation, School of Biological, Earth and Environmental Sciences, New South Wales 2052, Australia
| | - Luke Harrison
- Marine Studies Institute, School of Geosciences, University of Sydney, Australia
| | - Shauna A Murray
- University of Technology Sydney, School of Life Sciences, 15 Broadway, Ultimo NSW 2007, Australia; Sydney Institute of Marine Sciences, Mosman, New South Wales 2088, Australia
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15
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Zhao Y, Chen M, Chung TH, Chan LL, Qiu JW. The 2022 summer marine heatwaves and coral bleaching in China's Greater Bay Area. MARINE ENVIRONMENTAL RESEARCH 2023:106044. [PMID: 37321888 DOI: 10.1016/j.marenvres.2023.106044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2023] [Revised: 05/24/2023] [Accepted: 06/02/2023] [Indexed: 06/17/2023]
Abstract
From July to August 2022, scleractinian coral communities in China's Greater Bay Area (GBA) in the northern South China Sea (nSCS) experienced an unprecedented bleaching event, despite the fact that coral communities in this area are often considered coral thermal refugia due to their high latitude distribution. Field surveys of six sites covering three main coral distribution areas of the GBA revealed that coral bleaching occurred at all sites. Bleaching was more severe in shallow water (1-3 m) than in deep water (4-6 m), as indicated by both percent bleached cover (51.80 ± 10.04% vs. 7.09 ± 7.37%) and bleached colonies (45.86 ± 11.22% vs. 6.58 ± 6.53%). Coral genera Acropora, Favites, Montipora, Platygyra, Pocillopora, and Porites showed high susceptibility to bleaching, and Acropora and Pocillopora suffered high post-bleaching mortality. In the three areas surveyed, analysis of oceanographic data detected marine heatwaves (MHWs) during the summer, with mean intensities between 1.62 and 1.97 °C and durations between 5 and 22 days. These MHWs were primarily driven by increased shortwave radiation due to strong western Pacific Subtropical High (WPSH), combined with reduced mixing between the surface and deep upwelling waters due to reduced wind speed. Comparing with histological oceanographic data showed that the 2022 MHWs were unprecedented, and there was a significant increase in the frequency, intensity, and total days of MHWs during 1982-2022. Furthermore, the heterogeneous distribution of summer MHW characteristics indicates that the coastal upwelling may modulate the spatial distribution of summer MHWs in nSCS through its cooling effect. Overall, our study indicates that MHWs may have affected the structure of the subtropical coral communities in the nSCS, and impaired their potential as thermal refugia.
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Affiliation(s)
- Yu Zhao
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, 361102, PR China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, 511458, PR China
| | - Mingru Chen
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, 361102, PR China; Xiamen Key Laboratory of Urban Sea Ecological Conservation and Restoration (USER), Xiamen University, Xiamen, 361102, PR China.
| | - Tzu Hao Chung
- State Key Laboratory of Marine Pollution and Department of Biomedical Sciences, City University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Leo Lai Chan
- State Key Laboratory of Marine Pollution and Department of Biomedical Sciences, City University of Hong Kong, Hong Kong Special Administrative Region, China; Shenzhen Key Laboratory for the Sustainable Use of Marine Biodiversity, Research Centre for the Oceans and Human Health, City University of Hong Kong Shenzhen Research Institute, Shenzhen, 518057, PR China
| | - Jian-Wen Qiu
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, 511458, PR China; Department of Biology, Hong Kong Baptist University, Hong Kong Special Administrative Region, China.
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16
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Bertolini C, Glaser D, Canu M, Pastres R. Coupling habitat-specific temperature scenarios with tolerance landscape to predict the impacts of climate change on farmed bivalves. MARINE ENVIRONMENTAL RESEARCH 2023; 188:106038. [PMID: 37267665 DOI: 10.1016/j.marenvres.2023.106038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 05/26/2023] [Accepted: 05/28/2023] [Indexed: 06/04/2023]
Abstract
Due to climate change, heatwaves are likely to become more frequent, prolonged and characterized by higher peak values, compared with climatological averages. However, the thermal tolerance of organisms depends on the actual exposure, which can be modulated by environmental context and microhabitat characteristics. This study investigated the frequency of occurrence of mass mortality events in the next decades for two species of farmed bivalves, the mussel Mytilus galloprovincialis and the clam Ruditapes philippinarum, in a shallow coastal lagoon, characterised by marked diurnal oscillations of water temperature. The effect of heatwaves was estimated by means of tolerance landscape models, which predict the occurrence of 50% mortality based on the exposure intensity and duration. Scenarios of water temperature up to the year 2100 were modelled by combining two mechanistic components, namely: 1) monthly mean water temperatures, simulated using a hydrodynamic model including the heat budget; 2) daily oscillations, estimated from the harmonic analysis of a twenty year-long site-specific time series of water temperature. Scenarios of mean daily sediment temperature were estimated by means of a cross-correlation model, using as input the water temperature one: the model parameters were estimated based on a comprehensive set of site-specific water and sediment temperature observations. The results indicate that for both species the risk of mass mortality rapidly increases starting from the 2060s. Furthermore, the daily patterns of water temperature seemed to be relevant, as overnight it falls below the predicted mortality thresholds for a few hours. These findings suggest that further studies should address: 1) the improvement of tolerance landscape models, in order to take into account the integrated effect of repeated non-lethal stress events on mortality rate; 2) the prediction of environmental temperature in specific habitat, by means of both process-based and data driven models.
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Affiliation(s)
- C Bertolini
- DAIS, Ca' Foscari University of Venice, 30170, Venezia, Italy.
| | - D Glaser
- DAIS, Ca' Foscari University of Venice, 30170, Venezia, Italy
| | - M Canu
- Istituto Nazionale di Oceanografia e di Geofisica Sperimentale (OGS), 34010, Trieste, Italy
| | - R Pastres
- DAIS, Ca' Foscari University of Venice, 30170, Venezia, Italy
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17
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Oliveira AF, Marques SC, Pereira JL, Azeiteiro UM. A review of the order mysida in marine ecosystems: What we know what is yet to be known. MARINE ENVIRONMENTAL RESEARCH 2023; 188:106019. [PMID: 37207567 DOI: 10.1016/j.marenvres.2023.106019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 04/24/2023] [Accepted: 05/05/2023] [Indexed: 05/21/2023]
Abstract
Mysids have a high ecological importance, particularly by their role in marine food chains as a link between the benthic and pelagic realms. Here we describe the relevant taxonomy, ecological aspects such as distribution and production, and their potential as ideal test organisms for environmental research. We also highlight their importance in estuarine communities, trophic webs, and their life history, while demonstrating their potential in addressing emergent problems. This review emphasizes the importance of mysids in understanding the impacts of climate change and their role in the ecology of estuarine communities. Although there is a dearth of research in genomic studies, this review emphasizes the relevance of mysids and their potential as a model organism in environmental assessment studies of prospective or retrospective nature and highlights the need for further research to enhance our understanding of this group's ecological significance.
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Affiliation(s)
- Ana Filipa Oliveira
- Centre for Environmental and Marine Studies (CESAM) and Department of Biology, University of Aveiro, Portugal.
| | - Sónia Cotrim Marques
- MARE / ARNET, School of Tourism and Maritime Technology, Polytechnic of Leiria, Portugal
| | - Joana Luísa Pereira
- Centre for Environmental and Marine Studies (CESAM) and Department of Biology, University of Aveiro, Portugal
| | - Ulisses Miranda Azeiteiro
- Centre for Environmental and Marine Studies (CESAM) and Department of Biology, University of Aveiro, Portugal
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18
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Scanes E, Byrne M. Warming and hypoxia threaten a valuable scallop fishery: A warning for commercial bivalve ventures in climate change hotspots. GLOBAL CHANGE BIOLOGY 2023; 29:2043-2045. [PMID: 36655296 DOI: 10.1111/gcb.16606] [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: 12/15/2022] [Accepted: 01/08/2023] [Indexed: 05/28/2023]
Abstract
Marine molluscs constitute the second largest marine fishery and are often caught in coastal and estuarine habitats. Temperature is increasing in these habitats at a rate greater than predicted, especially in warming "hotspots". This warming is accompanied by hypoxia in a duo of stressors that threatens coastal mollusc fisheries and aquaculture. Collapses of the northern bay scallop (Argopecten irradians irradians) fisheries on the Atlantic coast of the USA are likely to be driven by rapid rates of coastal warming and may provide an ominous glimpse into the prospects of other coastal mollusc fisheries in climate warming hotspots.
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Affiliation(s)
- Elliot Scanes
- Climate Change Cluster, University of Technology Sydney, Ultimo, New South Wales, Australia
| | - Maria Byrne
- School of Life and Environmental Sciences, The University of Sydney, Camperdown, New South Wales, Australia
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19
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Tomasetti SJ, Hallinan BD, Tettelbach ST, Volkenborn N, Doherty OW, Allam B, Gobler CJ. Warming and hypoxia reduce the performance and survival of northern bay scallops (Argopecten irradians irradians) amid a fishery collapse. GLOBAL CHANGE BIOLOGY 2023; 29:2092-2107. [PMID: 36625070 DOI: 10.1111/gcb.16575] [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: 09/30/2022] [Accepted: 11/28/2022] [Indexed: 05/28/2023]
Abstract
Warming temperatures and diminishing dissolved oxygen (DO) concentrations are among the most pervasive drivers of global coastal change. While regions of the Northwest Atlantic Ocean are experiencing greater than average warming, the combined effects of thermal and hypoxic stress on marine life in this region are poorly understood. Populations of the northern bay scallop, Argopecten irradians irradians across the northeast United States have experienced severe declines in recent decades. This study used a combination of high-resolution (~1 km) satellite-based temperature records, long-term temperature and DO records, field and laboratory experiments, and high-frequency measures of scallop cardiac activity in an ecosystem setting to quantify decadal summer warming and assess the vulnerability of northern bay scallops to thermal and hypoxic stress across their geographic distribution. From 2003 to 2020, significant summer warming (up to ~0.2°C year-1 ) occurred across most of the bay scallop range. At a New York field site in 2020, all individuals perished during an 8-day estuarine heatwave that coincided with severe diel-cycling hypoxia. Yet at a Massachusetts site with comparable DO levels but lower daily mean temperatures, mortality was not observed. A 96-h laboratory experiment recreating observed daily temperatures of 25 or 29°C, and normoxia or hypoxia (22.2% air saturation), revealed a 120-fold increased likelihood of mortality in the 29°C-hypoxic treatment compared with control conditions, with scallop clearance rates also reduced by 97%. Cardiac activity measurements during a field deployment indicated that low DO and elevated daily temperatures modulate oxygen consumption rates and likely impact aerobic scope. Collectively, these findings suggest that concomitant thermal and hypoxic stress can have detrimental effects on scallop physiology and survival and potentially disrupt entire fisheries. Recovery of hypoxic systems may benefit vulnerable fisheries under continued warming.
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Affiliation(s)
| | - Brendan D Hallinan
- School of Marine and Atmospheric Sciences, Stony Brook University, Southampton, New York, USA
| | | | - Nils Volkenborn
- School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, New York, USA
| | | | - Bassem Allam
- School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, New York, USA
| | - Christopher J Gobler
- School of Marine and Atmospheric Sciences, Stony Brook University, Southampton, New York, USA
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20
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Zhou J, Zheng Y, Hou L, An Z, Chen F, Liu B, Wu L, Qi L, Dong H, Han P, Yin G, Liang X, Yang Y, Li X, Gao D, Li Y, Liu Z, Bellerby R, Liu M. Effects of acidification on nitrification and associated nitrous oxide emission in estuarine and coastal waters. Nat Commun 2023; 14:1380. [PMID: 36914644 PMCID: PMC10011576 DOI: 10.1038/s41467-023-37104-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Accepted: 02/28/2023] [Indexed: 03/16/2023] Open
Abstract
In the context of an increasing atmospheric carbon dioxide (CO2) level, acidification of estuarine and coastal waters is greatly exacerbated by land-derived nutrient inputs, coastal upwelling, and complex biogeochemical processes. A deeper understanding of how nitrifiers respond to intensifying acidification is thus crucial to predict the response of estuarine and coastal ecosystems and their contribution to global climate change. Here, we show that acidification can significantly decrease nitrification rate but stimulate generation of byproduct nitrous oxide (N2O) in estuarine and coastal waters. By varying CO2 concentration and pH independently, an expected beneficial effect of elevated CO2 on activity of nitrifiers ("CO2-fertilization" effect) is excluded under acidification. Metatranscriptome data further demonstrate that nitrifiers could significantly up-regulate gene expressions associated with intracellular pH homeostasis to cope with acidification stress. This study highlights the molecular underpinnings of acidification effects on nitrification and associated greenhouse gas N2O emission, and helps predict the response and evolution of estuarine and coastal ecosystems under climate change and human activities.
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Affiliation(s)
- Jie Zhou
- State Key Laboratory of Estuarine and Coastal Research, Yangtze Delta Estuarine Wetland Ecosystem Observation and Research Station, East China Normal University, Shanghai, 200241, China
| | - Yanling Zheng
- State Key Laboratory of Estuarine and Coastal Research, Yangtze Delta Estuarine Wetland Ecosystem Observation and Research Station, East China Normal University, Shanghai, 200241, China. .,School of Geographic Sciences, East China Normal University, Shanghai, 200241, China. .,Key Laboratory of Geographic Information Science (Ministry of Education), East China Normal University, Shanghai, 200241, China. .,Key Laboratory of Spatial-temporal Big Data Analysis and Application of Natural Resources in Megacities, Ministry of Natural Resources, Shanghai, 200241, China.
| | - Lijun Hou
- State Key Laboratory of Estuarine and Coastal Research, Yangtze Delta Estuarine Wetland Ecosystem Observation and Research Station, East China Normal University, Shanghai, 200241, China.
| | - Zhirui An
- State Key Laboratory of Estuarine and Coastal Research, Yangtze Delta Estuarine Wetland Ecosystem Observation and Research Station, East China Normal University, Shanghai, 200241, China
| | - Feiyang Chen
- State Key Laboratory of Estuarine and Coastal Research, Yangtze Delta Estuarine Wetland Ecosystem Observation and Research Station, East China Normal University, Shanghai, 200241, China
| | - Bolin Liu
- State Key Laboratory of Estuarine and Coastal Research, Yangtze Delta Estuarine Wetland Ecosystem Observation and Research Station, East China Normal University, Shanghai, 200241, China
| | - Li Wu
- School of Geographic Sciences, East China Normal University, Shanghai, 200241, China.,Key Laboratory of Geographic Information Science (Ministry of Education), East China Normal University, Shanghai, 200241, China
| | - Lin Qi
- School of Geographic Sciences, East China Normal University, Shanghai, 200241, China.,Key Laboratory of Geographic Information Science (Ministry of Education), East China Normal University, Shanghai, 200241, China
| | - Hongpo Dong
- State Key Laboratory of Estuarine and Coastal Research, Yangtze Delta Estuarine Wetland Ecosystem Observation and Research Station, East China Normal University, Shanghai, 200241, China
| | - Ping Han
- School of Geographic Sciences, East China Normal University, Shanghai, 200241, China.,Key Laboratory of Geographic Information Science (Ministry of Education), East China Normal University, Shanghai, 200241, China.,Key Laboratory of Spatial-temporal Big Data Analysis and Application of Natural Resources in Megacities, Ministry of Natural Resources, Shanghai, 200241, China
| | - Guoyu Yin
- School of Geographic Sciences, East China Normal University, Shanghai, 200241, China.,Key Laboratory of Geographic Information Science (Ministry of Education), East China Normal University, Shanghai, 200241, China.,Key Laboratory of Spatial-temporal Big Data Analysis and Application of Natural Resources in Megacities, Ministry of Natural Resources, Shanghai, 200241, China
| | - Xia Liang
- State Key Laboratory of Estuarine and Coastal Research, Yangtze Delta Estuarine Wetland Ecosystem Observation and Research Station, East China Normal University, Shanghai, 200241, China
| | - Yi Yang
- School of Geographic Sciences, East China Normal University, Shanghai, 200241, China.,Key Laboratory of Geographic Information Science (Ministry of Education), East China Normal University, Shanghai, 200241, China.,Key Laboratory of Spatial-temporal Big Data Analysis and Application of Natural Resources in Megacities, Ministry of Natural Resources, Shanghai, 200241, China
| | - Xiaofei Li
- State Key Laboratory of Estuarine and Coastal Research, Yangtze Delta Estuarine Wetland Ecosystem Observation and Research Station, East China Normal University, Shanghai, 200241, China
| | - Dengzhou Gao
- State Key Laboratory of Estuarine and Coastal Research, Yangtze Delta Estuarine Wetland Ecosystem Observation and Research Station, East China Normal University, Shanghai, 200241, China
| | - Ye Li
- School of Geographic Sciences, East China Normal University, Shanghai, 200241, China.,Key Laboratory of Geographic Information Science (Ministry of Education), East China Normal University, Shanghai, 200241, China.,Key Laboratory of Spatial-temporal Big Data Analysis and Application of Natural Resources in Megacities, Ministry of Natural Resources, Shanghai, 200241, China
| | - Zhanfei Liu
- The University of Texas at Austin Marine Science Institute, Port Aransas, TX, 78373, USA
| | - Richard Bellerby
- Norwegian Institute for Water Research, Thormøhlensgt 53D, 5006, Bergen, Norway
| | - Min Liu
- School of Geographic Sciences, East China Normal University, Shanghai, 200241, China. .,Key Laboratory of Geographic Information Science (Ministry of Education), East China Normal University, Shanghai, 200241, China. .,Key Laboratory of Spatial-temporal Big Data Analysis and Application of Natural Resources in Megacities, Ministry of Natural Resources, Shanghai, 200241, China.
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21
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Keppeler FW, Junker JR, Shaw MJ, Alford SB, Engel AS, Hooper‐Bùi LM, Jensen OP, Lamb K, López‐Duarte PC, Martin CW, McDonald AM, Olin JA, Paterson AT, Polito MJ, Rabalais NN, Roberts BJ, Rossi RE, Swenson EM. Can biodiversity of preexisting and created salt marshes match across scales? An assessment from microbes to predators. Ecosphere 2023. [DOI: 10.1002/ecs2.4461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023] Open
Affiliation(s)
- Friedrich W. Keppeler
- Center for Limnology University of Wisconsin–Madison Madison Wisconsin USA
- Núcleo de Ecologia Aquática e Pesca da Amazônia Federal University of Pará Belém Pará Brazil
| | - James R. Junker
- Great Lakes Research Center Michigan Technological University Houghton Michigan USA
| | - Margaret J. Shaw
- Center for Limnology University of Wisconsin–Madison Madison Wisconsin USA
| | - Scott B. Alford
- Nature Coast Biological Station University of Florida Cedar Key Florida USA
| | - Annette S. Engel
- Department of Earth and Planetary Sciences The University of Tennessee–Knoxville Knoxville Tennessee USA
| | - Linda M. Hooper‐Bùi
- Department of Environmental Sciences Louisiana State University Baton Rouge Louisiana USA
| | - Olaf P. Jensen
- Center for Limnology University of Wisconsin–Madison Madison Wisconsin USA
| | - Katelyn Lamb
- Department of Oceanography and Coastal Sciences Louisiana State University Baton Rouge Louisiana USA
| | - Paola C. López‐Duarte
- Department of Biological Sciences University of North Carolina at Charlotte Charlotte North Carolina USA
| | - Charles W. Martin
- Nature Coast Biological Station University of Florida Cedar Key Florida USA
| | - Ashley M. McDonald
- Nature Coast Biological Station University of Florida Cedar Key Florida USA
| | - Jill A. Olin
- Great Lakes Research Center Michigan Technological University Houghton Michigan USA
| | - Audrey T. Paterson
- Department of Earth and Planetary Sciences The University of Tennessee–Knoxville Knoxville Tennessee USA
| | - Michael J. Polito
- Department of Oceanography and Coastal Sciences Louisiana State University Baton Rouge Louisiana USA
| | - Nancy N. Rabalais
- Department of Oceanography and Coastal Sciences Louisiana State University Baton Rouge Louisiana USA
| | | | - Ryann E. Rossi
- Louisiana Universities Marine Consortium Chauvin Louisiana USA
- St. Andrew and St. Joseph Bays Estuary Program Florida State University Panama City Panama City Florida USA
| | - Erick M. Swenson
- Department of Oceanography and Coastal Sciences Louisiana State University Baton Rouge Louisiana USA
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22
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Suzzi AL, Stat M, Gaston TF, Siboni N, Williams NLR, Seymour JR, Huggett MJ. Elevated estuary water temperature drives fish gut dysbiosis and increased loads of pathogenic vibrionaceae. ENVIRONMENTAL RESEARCH 2023; 219:115144. [PMID: 36584839 DOI: 10.1016/j.envres.2022.115144] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 12/19/2022] [Accepted: 12/21/2022] [Indexed: 06/17/2023]
Abstract
Marine water temperatures are increasing globally, with eastern Australian estuaries warming faster than predicted. There is growing evidence that this rapid warming of coastal waters is increasing the abundance and virulence of pathogenic members of the Vibrionaceae, posing a significant health risk to both humans and aquatic organisms. Fish disease, notably outbreaks of emerging pathogens in response to environmental perturbations such as heatwaves, have been recognised in aquaculture settings. Considerably less is known about how rising sea surface temperatures will impact the microbiology of wild fish populations, particularly those within estuarine systems that are more vulnerable to warming. We used a combination of Vibrio-specific quantitative PCR and amplicon sequencing of the 16S rRNA and hsp60 genes to examine seawater and fish (Pelates sexlineatus) gut microbial communities across a quasi-natural experimental system, where thermal pollution from coal-fired power stations creates a temperature gradient of up to 6 °C, compatible with future predicted temperature increases. At the warmest site, fish hindgut microbial communities were in a state of dysbiosis characterised by shifts in beta diversity and a proliferation (71.5% relative abundance) of the potential fish pathogen Photobacterium damselae subsp. damselae. Comparable patterns were not identified in the surrounding seawater, indicating opportunistic proliferation within estuarine fish guts under thermal stress. A subsequent evaluation of predicted future warming-related risk due to pathogenic Vibrionaceae in temperate estuarine fish demonstrated that warming is likely to drive opportunistic pathogen increases in the upper latitudinal range of this estuarine fish, potentially impacting adaptations to future warming. These findings represent a breakthrough in our understanding of the dynamics of emerging pathogens in populations of wild aquatic organisms within environments likely to experience rapid warming under future climate change.
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Affiliation(s)
- Alessandra L Suzzi
- School of Environmental and Life Sciences, The University of Newcastle, Ourimbah, NSW, 2258, Australia.
| | - Michael Stat
- School of Environmental and Life Sciences, The University of Newcastle, Ourimbah, NSW, 2258, Australia
| | - Troy F Gaston
- School of Environmental and Life Sciences, The University of Newcastle, Ourimbah, NSW, 2258, Australia
| | - Nachshon Siboni
- Climate Change Cluster, University of Technology Sydney, NSW, 2007, Australia
| | - Nathan L R Williams
- Climate Change Cluster, University of Technology Sydney, NSW, 2007, Australia
| | - Justin R Seymour
- Climate Change Cluster, University of Technology Sydney, NSW, 2007, Australia
| | - Megan J Huggett
- School of Environmental and Life Sciences, The University of Newcastle, Ourimbah, NSW, 2258, Australia; Centre for Marine Ecosystems Research, School of Science, Edith Cowan University, Joondalup, WA, 6027, Australia
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23
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Biguino B, Haigh ID, Dias JM, Brito AC. Climate change in estuarine systems: Patterns and gaps using a meta-analysis approach. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 858:159742. [PMID: 36341849 DOI: 10.1016/j.scitotenv.2022.159742] [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: 07/18/2022] [Revised: 10/21/2022] [Accepted: 10/22/2022] [Indexed: 06/16/2023]
Abstract
Although regional studies and projections suggest the deterioration of estuaries as a consequence of climate change, it is still difficult to fully understand the importance of such changes in estuarine systems. This limitation is particularly important considering their high dynamism and the lack of temporally extended in situ databases with a good spatial coverage for these systems worldwide. Furthermore, contradictory patterns have been observed across the globe. Motivated by these issues, in this study we question the availability of in situ observational evidence of climate change in estuarine systems through a detailed meta-analysis of existing publications. A topic-related search considering the outputs of the Web of Science library was conducted in order to obtain a characterization of the existing studies on climate change in estuarine systems. Results confirmed that climate change has increasingly been studied since 2000 and that marine climate change constituted the focus of 9.69 % of those studies. From these, only 9.30 % encompassed estuarine studies and just 1.13 % used in situ observations from estuarine systems (i.e., 0.11 % of the total climate change publications). Reanalysis products were the most used tools to assess changes in estuarine systems and sea temperature was the most analyzed variable. These results highlight the need to further address such questions using in situ observational data and to implement long-term observatories to fully identify evidence of climate change in estuarine systems, supporting modelling approaches and promoting the development of effective mitigation plans.
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Affiliation(s)
- Beatriz Biguino
- MARE - Marine and Environmental Sciences Centre/ARNET - Aquatic Research Network, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal.
| | - Ivan D Haigh
- School of Ocean and Earth Science, National Oceanography Centre, University of Southampton, Waterfront Campus, European Way, Southampton SO14 3ZH, UK
| | - João Miguel Dias
- CESAM - Centre for Environmental and Marine Studies, Departamento de Física, Universidade de Aveiro, 3810-193 Aveiro, Portugal
| | - Ana C Brito
- MARE - Marine and Environmental Sciences Centre/ARNET - Aquatic Research Network, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal; Departamento de Biologia Vegetal, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal
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24
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Kalidindi S, Yi H. Robust and Reliable Fabrication of Gelatin Films Containing Micropatterned Opal Structures via Evaporative Deposition and Thermal Gelation. ACS APPLIED MATERIALS & INTERFACES 2022; 14:57481-57491. [PMID: 36512441 DOI: 10.1021/acsami.2c20266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Biopolymeric hydrogel materials containing tunable optical properties such as micropatterned artificial opal structures hold significant potential in various applications. Despite recent advances in fabrication techniques, simple, reliable, and tunable production of stimuli-responsive micropatterned opal hydrogels under mild conditions remains challenging. We report a simple micromolding-based evaporative deposition-thermal gelation technique for gelatin films that capture uniform opal micropatterns, aided by a potent aminopolysaccharide chitosan (CS) that provides binding affinity and structural stability. Our results show reliable, tunable, and high-fidelity fabrication of gelatin hydrogel films containing CS-opal micropatterns, while the as-prepared films show responsiveness to pH, ionic strength, and water content indicating a robust nature. Uniform CS-opal microparticles can also be readily prepared via removal of the gelatin through various simple routes, illustrating the crucial roles of CS and gelatin. We envision that this robust, reliable, and simple evaporative deposition-thermal gelation technique can be readily extended to prepare responsive biopolymeric materials for various applications.
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Affiliation(s)
- Subhash Kalidindi
- Department of Chemical and Biological Engineering, Tufts University, Medford, Massachusetts02155, United States
| | - Hyunmin Yi
- Department of Chemical and Biological Engineering, Tufts University, Medford, Massachusetts02155, United States
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25
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Yoon HJ, Lee G, Kim JT, Yoo JY, Luan H, Cheng S, Kang S, Huynh HLT, Kim H, Park J, Kim J, Kwak SS, Ryu H, Kim J, Choi YS, Ahn HY, Choi J, Oh S, Jung YH, Park M, Bai W, Huang Y, Chamorro LP, Park Y, Rogers JA. Biodegradable, three-dimensional colorimetric fliers for environmental monitoring. SCIENCE ADVANCES 2022; 8:eade3201. [PMID: 36563148 PMCID: PMC9788784 DOI: 10.1126/sciadv.ade3201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 11/16/2022] [Indexed: 06/17/2023]
Abstract
Recently reported winged microelectronic systems offer passive flight mechanisms as a dispersal strategy for purposes in environmental monitoring, population surveillance, pathogen tracking, and other applications. Initial studies indicate potential for technologies of this type, but advances in structural and responsive materials and in aerodynamically optimized geometries are necessary to improve the functionality and expand the modes of operation. Here, we introduce environmentally degradable materials as the basis of 3D fliers that allow remote, colorimetric assessments of multiple environmental parameters-pH, heavy metal concentrations, and ultraviolet exposure, along with humidity levels and temperature. Experimental and theoretical investigations of the aerodynamics of these systems reveal design considerations that include not only the geometries of the structures but also their mass distributions across a range of bioinspired designs. Preliminary field studies that rely on drones for deployment and for remote colorimetric analysis by machine learning interpretation of digital images illustrate scenarios for practical use.
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Affiliation(s)
- Hong-Joon Yoon
- Department of Electronic Engineering, Gachon University, Seongnam-si, Gyeonggi-do 13120, Republic of Korea
| | - Geumbee Lee
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL 60208, USA
| | - Jin-Tae Kim
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL 60208, USA
| | - Jae-Young Yoo
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL 60208, USA
| | - Haiwen Luan
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL 60208, USA
| | - Shyuan Cheng
- Department of Mechanical Science and Engineering, University of Illinois, Urbana, IL 61801, USA
| | - Soohyeon Kang
- Department of Mechanical Science and Engineering, University of Illinois, Urbana, IL 61801, USA
| | - Huong Le Thien Huynh
- Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208, USA
| | - Hyeonsu Kim
- Department of Chemical and Biomolecular Engineering, University of Illinois, Urbana, IL 61801, USA
| | - Jaehong Park
- Department of Chemical and Biomolecular Engineering, University of Illinois, Urbana, IL 61801, USA
| | - Joohee Kim
- Center for Bionics of Biomedical Research Institute, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Sung Soo Kwak
- Center for Bionics of Biomedical Research Institute, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Hanjun Ryu
- Department of Advanced Materials Engineering, Chung-Ang University, 4726 Seodong-daero, Daedeok-myeon, Anseong-si, Gyeonggi-do 17546, Republic of Korea
| | - Jihye Kim
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL 60208, USA
| | - Yeon Sik Choi
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL 60208, USA
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Hak-Young Ahn
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL 60208, USA
| | - Junhwan Choi
- Department of Chemical Engineering, Dankook University, Yongin 16890, Republic of Korea
| | - Seyong Oh
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL 60208, USA
| | - Yei Hwan Jung
- Department of Electronic Engineering, Hanyang University, Seoul, Republic of Korea
| | - Minsu Park
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL 60208, USA
| | - Wubin Bai
- Department of Applied Physical Sciences, University of North Carolina at Chapel Hill, Chapel Hill, NC 27514, USA
| | - Yonggang Huang
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL 60208, USA
- Department of Civil and Environmental Engineering, Northwestern University, Evanston, IL 60208, USA
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL 60208, USA
| | - Leonardo P. Chamorro
- Department of Mechanical Science and Engineering, University of Illinois, Urbana, IL 61801, USA
| | - Yoonseok Park
- Department of Advanced Materials Engineering for Information and Electronics, Kyung Hee University, Yongin 17104, Republic of Korea
| | - John A. Rogers
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL 60208, USA
- Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208, USA
- Department of Mechanical Engineering, Northwestern University, Evanston, IL 60208, USA
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL 60208, USA
- Department of Neurological Surgery, Northwestern University, Evanston, IL 60208, USA
- Feinberg School of Medicine, Northwestern University, Evanston, IL 60208, USA
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26
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da Silva RB, Dos Santos GAP, de Farias ALL, França DAA, Cavalcante RA, Zanardi-Lamardo E, de Souza JRB, Esteves AM. Effects of PAHs on meiofauna from three estuaries with different levels of urbanization in the South Atlantic. PeerJ 2022; 10:e14407. [PMID: 36518285 PMCID: PMC9744168 DOI: 10.7717/peerj.14407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 10/26/2022] [Indexed: 12/05/2022] Open
Abstract
Estuarine environments are suggested to be the final receivers of human pollution and are impacted by surrounding urbanization and compounds carried by the river waters that flow from the continent. Polycyclic aromatic hydrocarbons (PAHs) are among the contaminants that can reach estuaries and can directly affect marine conservation, being considered highly deleterious to organisms living in these environments. This research investigated the meiofauna of three estuaries exposed to different levels of urbanization and consequently different levels of PAH concentrations, in order to assess how these compounds and environmental factors affect the distribution, structure and diversity of these interstitial invertebrates. A total of 15 major meiofauna groups were identified, with Nematoda being the dominant taxon (74.64%), followed by Copepoda (9.55%) and Polychaeta (8.56%). It was possible to observe significant differences in all diversity indices studied in the estuaries. With the exception of average density, the diversity indices (richness, Shannon index and evenness) were higher in the reference estuary, Goiana estuarine system (GES). On the other hand, the Timbó estuarine system (TES) had the lowest Shannon index value and richness, while the Capibaribe estuarine system (CES) had the lowest evenness value. The latter two estuaries (TES and CES) presented intermediate and high levels of urbanization, respectively. The ecological quality assessment (EcoQ) in the studied estuaries was classified from Poor to Moderate and the estuary with the lowest demographic density in its surroundings, GES, showed a better ecological quality (Moderate EcoQ). A significant distance-based multivariate linear modelling regression (DistLM) was observed between the environmental variables and the density of the meiobenthic community, where PAHs and pH were the main contributors to organism variation. The sediments were characterized by predominance of very fine sand and silt-clay in the most polluted environments, while the control site environment (GES) was dominated by medium grains. The highest concentrations of PAHs were found in the most urbanized estuaries, and directly affected the structure of the interstitial benthic community. The metrics used in the present study proved to be adequate for assessing the environmental quality of the investigated estuaries.
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Affiliation(s)
- Renan B. da Silva
- Campus Recife, Center for Biosciences, Department of Zoology, Federal University of Pernambuco, Recife, Pernambuco, Brazil
| | - Giovanni A. P. Dos Santos
- Campus Recife, Center for Biosciences, Department of Zoology, Federal University of Pernambuco, Recife, Pernambuco, Brazil
| | - Ana Luiza L. de Farias
- Campus Recife, Center for Biosciences, Department of Zoology, Federal University of Pernambuco, Recife, Pernambuco, Brazil
| | - Débora A. A. França
- Campus Recife, Center for Biosciences, Department of Zoology, Federal University of Pernambuco, Recife, Pernambuco, Brazil
| | - Raianne Amorim Cavalcante
- Campus Recife, Center for Biosciences, Department of Zoology, Federal University of Pernambuco, Recife, Pernambuco, Brazil
| | - Eliete Zanardi-Lamardo
- Campus Recife, Technology and Geoscience Center, Department of Oceanography, Federal University of Pernambuco, Recife, Pernambuco, Brazil
| | - Jose Roberto Botelho de Souza
- Campus Recife, Center for Biosciences, Department of Zoology, Federal University of Pernambuco, Recife, Pernambuco, Brazil
| | - Andre M. Esteves
- Campus Recife, Center for Biosciences, Department of Zoology, Federal University of Pernambuco, Recife, Pernambuco, Brazil
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27
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Raes EJ, Tolman J, Desai D, Ratten JM, Zorz J, Robicheau BM, Haider D, LaRoche J. Seasonal bacterial niche structures and chemolithoautotrophic ecotypes in a North Atlantic fjord. Sci Rep 2022; 12:15335. [PMID: 36097189 PMCID: PMC9468339 DOI: 10.1038/s41598-022-19165-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2022] [Accepted: 08/25/2022] [Indexed: 11/27/2022] Open
Abstract
Quantifying the temporal change of bacterial communities is essential to understanding how both natural and anthropogenic pressures impact the functions of coastal marine ecosystems. Here we use weekly microbial DNA sampling across four years to show that bacterial phyla have distinct seasonal niches, with a richness peak in winter (i.e., an inverse relationship with daylength). Our results suggest that seasonal fluctuations, rather than the kinetic energy or resource hypotheses, dominated the pattern of bacterial diversity. These findings supplement those from global analyses which lack temporal replication and present few data from winter months in polar and temperate regions. Centered log-ratio transformed data provided new insights into the seasonal niche partitioning of conditionally rare phyla, such as Modulibacteria, Verrucomicrobiota, Synergistota, Deinococcota, and Fermentibacterota. These patterns could not be identified using the standard practice of ASV generation followed by rarefaction. Our study provides evidence that five globally relevant ecotypes of chemolithoautotrophic bacteria from the SUP05 lineage comprise a significant functional group with varying seasonal dominance patterns in the Bedford Basin.
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Affiliation(s)
- Eric J Raes
- Department of Biology, Dalhousie University, Halifax, NS, B3H 4R2, Canada. .,Flourishing Oceans, Minderoo Foundation, Broadway, WA, 6009, Australia.
| | - Jennifer Tolman
- Department of Biology, Dalhousie University, Halifax, NS, B3H 4R2, Canada
| | - Dhwani Desai
- Department of Biology, Dalhousie University, Halifax, NS, B3H 4R2, Canada.,Department of Pharmacology, Dalhousie University, Halifax, NS, B3H 4R2, Canada
| | - Jenni-Marie Ratten
- Department of Biology, Dalhousie University, Halifax, NS, B3H 4R2, Canada
| | - Jackie Zorz
- Department of Geoscience, University of Calgary, Calgary, AB, T2N 1N4, Canada
| | - Brent M Robicheau
- Department of Biology, Dalhousie University, Halifax, NS, B3H 4R2, Canada
| | - Diana Haider
- Department of Biology, Dalhousie University, Halifax, NS, B3H 4R2, Canada.,Faculty of Computer Science, Dalhousie University, Halifax, NS, B3H 4R2, Canada
| | - Julie LaRoche
- Department of Biology, Dalhousie University, Halifax, NS, B3H 4R2, Canada
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28
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Castro-Olivares A, Des M, Olabarria C, deCastro M, Vázquez E, Sousa MC, Gómez-Gesteira M. Does global warming threaten small-scale bivalve fisheries in NW Spain? MARINE ENVIRONMENTAL RESEARCH 2022; 180:105707. [PMID: 35963134 DOI: 10.1016/j.marenvres.2022.105707] [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: 04/06/2022] [Revised: 07/19/2022] [Accepted: 07/19/2022] [Indexed: 06/15/2023]
Abstract
Shellfisheries of the intertidal and shallow subtidal infaunal bivalves Ruditapes decussatus, Ruditapes philippinarum, Venerupis corrugata and Cerastoderma edule are of great socio-economic importance (in terms of landings) in Europe, specifically in the Galician Rías Baixas (NW Spain). However, ocean warming may threaten these fisheries by modifying the geographic distribution of the species and thus affecting productive areas. The present study analysed the impact of rising ocean temperature on the geographical distribution of the thermal comfort areas of these bivalves throughout the 21st century. The Delft3D model was used to downscale climate data from CORDEX and CMIP5 and was run for July and August in three future periods (2025-2049, 2050-2074 and 2075-2099) under the RCP8.5 scenario. The areas with optimal temperature conditions for shellfish harvesting located in the middle and outer parts of the rias may increase in the near future for R. decussatus, V. corrugata and C. edule and decrease in the far future for R. philippinarum. Moreover, shellfish beds located in the shallower areas of the inner parts of the Rías Baixas could be affected by increased water temperature, reducing the productive areas of the four species by the end of the century. The projected changes in thermal condition will probably lead to changes in shellfish harvesting modality (on foot or aboard vessels) with further socio-economic consequences.
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Affiliation(s)
- A Castro-Olivares
- Centro de Investigación Mariña, Universidade de Vigo, Environmental Physics Laboratory (EPhysLab), Campus As Lagoas s/n, Ourense, 32004, Spain.
| | - M Des
- Centro de Investigación Mariña, Universidade de Vigo, Environmental Physics Laboratory (EPhysLab), Campus As Lagoas s/n, Ourense, 32004, Spain
| | - C Olabarria
- Centro de Investigación Mariña, Universidade de Vigo, Departamento de Ecoloxía e Bioloxía Animal, Facultade de Ciencias do Mar, 36310, Vigo, Spain
| | - M deCastro
- Centro de Investigación Mariña, Universidade de Vigo, Environmental Physics Laboratory (EPhysLab), Campus As Lagoas s/n, Ourense, 32004, Spain
| | - E Vázquez
- Centro de Investigación Mariña, Universidade de Vigo, Departamento de Ecoloxía e Bioloxía Animal, Facultade de Ciencias do Mar, 36310, Vigo, Spain
| | - M C Sousa
- CESAM, Physics Department, University of Aveiro, Aveiro, 3810-193, Portugal
| | - M Gómez-Gesteira
- Centro de Investigación Mariña, Universidade de Vigo, Environmental Physics Laboratory (EPhysLab), Campus As Lagoas s/n, Ourense, 32004, Spain
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29
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Mos B, Mos D. Range expansion of a widespread Indo-Pacific haemulid, the barred javelin Pomadasys kaakan (Cuvier, 1830), in a climate change hotspot. JOURNAL OF FISH BIOLOGY 2022; 101:736-740. [PMID: 35638389 PMCID: PMC9540066 DOI: 10.1111/jfb.15125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Accepted: 05/29/2022] [Indexed: 06/15/2023]
Abstract
The authors report a first sighting of a euryhaline fish in the climate change hotspot along Australia's south-eastern coast. The barred javelin, Pomadasys kaakan (Cuvier, 1830) was found in the Nambucca River in New South Wales, Australia, during 2021 and 2022. Specimens were adult, suggesting they may not be transitory vagrants. The new southernmost location recorded here represents a c. 200 km out-of-range sighting compared to previous records, and is c. 380 km south of the southernmost Australian stronghold of the species in Moreton Bay, Queensland.
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Affiliation(s)
- Benjamin Mos
- National Marine Science Centre, Faculty of Science and EngineeringSouthern Cross UniversityCoffs HarbourNew South WalesAustralia
| | - Daniel Mos
- Dan Mos ConstructionWirrimbiNew South WalesAustralia
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30
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Gacutan J, Lal K, Herath S, Lantz C, Taylor M, Milligan B. Using Ocean Accounting towards an integrated assessment of ecosystem services and benefits within a coastal lake. ONE ECOSYSTEM 2022. [DOI: 10.3897/oneeco.7.e81855] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Coasts lie at the interface between terrestrial and marine environments, where complex interrelationships and feedbacks between environmental, social and economic factors provide a challenge for decision-making. The knowledge and data needed to link and measure these multiple domains are often highly fragmented and incoherent. Ocean Accounting provides a means to organise relevant ocean data into a common framework, grounded in existing international statistical standards for national and environmental-economic accounting. Here, we test Ocean Accounting within Lake Illawarra, New South Wales (Australia), compiling accounts for the years between 2010 and 2020, inclusive, to measure the extent of coastal vegetation (mangrove, tidal marsh and seagrass) and associated ecosystem services flows (climate change mitigation, eutrophication mitigation) in physical and monetary terms and associated production and employment within sectors of the ocean economy. The accounts show an increase in mangroves by 2 ha and a decrease in seagrass of 80 ha. A net increase was observed in the amount of carbon, nitrogen and phosphorus sequestered across coastal vegetation, due to the expansion of mangroves. Alongside changes in ecosystem extent, a 2-fold increase in full-time ocean-related employment was observed. Fisheries catch also showed significant variation over the 10-year period, where dependencies were observed between commercial species with seagrass and tidal marsh. The relationships and measures derived from accounts provide a cohesive and integrated understanding to provide information for the management and standardised ecosystem service assessments.
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Benthotage C, Schulz KG, Cole VJ, Benkendorff K. Water quality and the health of remnant leaf oyster (Isognomon ephippium) populations in four Australian estuaries. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 826:154061. [PMID: 35231523 DOI: 10.1016/j.scitotenv.2022.154061] [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: 12/07/2021] [Revised: 01/30/2022] [Accepted: 02/17/2022] [Indexed: 06/14/2023]
Abstract
Leaf oysters (Isognomon ephippium) are large intertidal bivalves that form shellfish reefs. They have a patchy and restricted distribution in estuaries in northern New South Wales, Australia, where the water quality is impacted by a range of anthropogenic stressors from coastal agriculture, urbanisation, industry and recreational activities, along with natural stochastic events such as flooding. Little, however, is currently known about the tolerance of leaf oysters to poor water quality. This study investigated the condition of leaf oyster populations in four estuaries, by assessing the density, size-frequency and condition index. These biological parameters were modelled against habitat water quality parameters including nutrient loads, organic and inorganic carbon, algal biomass, sedimentation and total alkalinity. The water quality assessments were replicated during dry conditions and after rain in two estuaries. Leaf oyster density, size, and body condition significantly differed among the four estuaries. Density ranged from as few as 0.04 oysters per m2 in the heavily impacted Richmond River, up to 267 oysters per m2 in the Tweed River. Overall water quality was also significantly different among the four estuaries, and significant declines in water quality were observed after rain. Distance based linear models revealed significant correlations between biological indicators of leaf oyster reef health and a range of water quality parameters. Leaf oysters with higher condition occur in locations with high dissolved oxygen and salinity levels, whereas low pH and high nutrient run-off were associated with low density and poorer oyster condition. Nevertheless, dense populations were found to persist in areas with pH below 7.9, in high turbidity (over 27 NTU) and areas dominated by fine silt. Their ability to form dense reefs on estuarine soft muddy bottom habitats with low water flow, suggests that leaf oysters could be used to complement rock oysters in future intertidal shellfish reef restoration programs.
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Affiliation(s)
- Chamara Benthotage
- Marine Ecology Research Centre, Faculty of Science and Engineering, Southern Cross University, Military Road, East Lismore, NSW 2480, Australia
| | - Kai G Schulz
- Centre for Coastal Biogeochemistry, Faculty of Science and Engineering, Southern Cross University, Military Road, East Lismore, NSW 2480, Australia
| | - Victoria J Cole
- Department of Primary Industries Fisheries, Port Stephens Fisheries Institute, Taylors Beach Road, Taylors Beach, NSW 2316, Australia
| | - Kirsten Benkendorff
- Marine Ecology Research Centre, Faculty of Science and Engineering, Southern Cross University, Military Road, East Lismore, NSW 2480, Australia; National Marine Science Centre, Faculty of Science and Engineering, Southern Cross University, 2 Bay Drive, Coffs Harbour, NSW 2450, Australia.
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Impacts of Climate Change and Non-Point-Source Pollution on Water Quality and Algal Blooms in the Shoalhaven River Estuary, NSW, Australia. WATER 2022. [DOI: 10.3390/w14121914] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
This study quantifies some of the potential impacts of climate change and nutrient pollution to identify the most important factors on water quality changes and algal blooms in the study region. Three variables, air temperature and streamflow, representing climate change, and nutrient runoff, were varied in eight hypothetical scenarios to determine their impact on water quality and algal blooms by the calibrated and validated water quality model QUAL2K. Water quality was assessed by the concentrations of dissolved oxygen, total nitrogen, and phosphorus. Algal blooms were identified by phytoplankton concentration. An increase in air temperature of up to 2 °C resulted in an average increase of 3% in water temperature and 4.79% in phytoplankton concentration, and an average decrease of 0.48% in dissolved-oxygen concentration. Projected decreases in streamflow not only made the above phenomenon more significant but also significantly increased the concentration of total nitrogen, total phosphorus, and phytoplankton with the same pollution inputs. Under climate change, the biggest cause of concern for estuarine water quality is reduced streamflow due to decreases in rainfall. Water quality improvement is possible by regulating the concentration of non-point-source pollution discharge. By reducing nutrient runoff, the total nitrogen and phosphorus concentrations were also reduced, resulting in a significant increase in the dissolved oxygen concentration. This study highlights the most significant factors for managing water quality in estuaries subject to climate change.
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Luis Val A, Wood CM. Global change and physiological challenges for fish of the Amazon today and in the near future. J Exp Biol 2022; 225:275450. [PMID: 35582942 DOI: 10.1242/jeb.216440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Amazonia is home to 15% (>2700, in 18 orders) of all the freshwater fish species of the world, many endemic to the region, has 65 million years of evolutionary history and accounts for 20% of all freshwater discharge to the oceans. These characteristics make Amazonia a unique region in the world. We review the geological history of the environment, its current biogeochemistry and the evolutionary forces that led to the present endemic fish species that are distributed amongst three very different water types: black waters [acidic, ion-poor, rich in dissolved organic carbon (DOC)], white waters (circumneutral, particle-rich) and clear waters (circumneutral, ion-poor, DOC-poor). The annual flood pulse is the major ecological driver for fish, providing feeding, breeding and migration opportunities, and profoundly affecting O2, CO2 and DOC regimes. Owing to climate change and other anthropogenic pressures such as deforestation, pollution and governmental mismanagement, Amazonia is now in crisis. The environment is becoming hotter and drier, and more intense and frequent flood pulses are now occurring, with greater variation between high and low water levels. Current projections are that Amazon waters of the near future will be even hotter, more acidic, darker (i.e. more DOC, more suspended particles), higher in ions, higher in CO2 and lower in O2, with many synergistic effects. We review current physiological information on Amazon fish, focusing on temperature tolerance and ionoregulatory strategies for dealing with acidic and ion-poor environments. We also discuss the influences of DOC and particles on gill function, the effects of high dissolved CO2 and low dissolved O2, with emphasis on water- versus air-breathing mechanisms, and strategies for pH compensation. We conclude that future elevations in water temperature will be the most critical factor, eliminating many species. Climate change will likely favour predominantly water-breathing species with low routine metabolic rates, low temperature sensitivity of routine metabolic rates, high anaerobic capacity, high hypoxia tolerance and high thermal tolerance.
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Affiliation(s)
- Adalberto Luis Val
- Laboratory of Ecophysiology and Molecular Evolution, Brazilian National Institute for Research of the Amazon, Manaus, Brazil, 69080-971
| | - Chris M Wood
- Department of Zoology, University of British Columbia, Vancouver, BC, CanadaV6T 1Z4.,Department of Biology, McMaster University, Hamilton, ON, CanadaL8S 4K1
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Zheng D, Yin G, Liu M, Hou L, Yang Y, Liu X, Jiang Y, Chen C, Wu H. Metagenomics highlights the impact of climate and human activities on antibiotic resistance genes in China's estuaries. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 301:119015. [PMID: 35183662 DOI: 10.1016/j.envpol.2022.119015] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 01/28/2022] [Accepted: 02/15/2022] [Indexed: 06/14/2023]
Abstract
Estuarine environments faced with contaminations from coastal zones and the inland are vital sinks of antibiotic resistance genes (ARGs). However, little is known about the temporal-spatial pattern of ARGs and its predominant constraints in estuarine environments. Here, we leveraged metagenomics to investigate ARG profiles from 16 China's estuaries across 6 climate zones in dry and wet seasons, and disentangled their relationships with environmental constraints. Our results revealed that ARG abundance, richness, and diversity in dry season were higher than those in wet season, and ARG abundance exhibited an increasing trend with latitude. The prevalence of ARGs was significantly driven by human activities, mobile gene elements, microbial communities, antibiotic residuals, physicochemical properties, and climatic variables. Among which, climatic variables and human activities ranked the most important factors, contributing 44% and 36% of the total variance of observed ARGs, respectively. The most important climatic variable shaping ARGs is temperature, where increasing temperature is associated with decreased ARGs. Our results highlight that the prevalence of ARGs in estuarine environments would be co-driven by anthropogenic activities and climate, and suggest the dynamics of ARGs under future changing climate and socioeconomic development.
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Affiliation(s)
- Dongsheng Zheng
- Key Laboratory of Geographic Information Science (Ministry of Education), East China Normal University, Shanghai, 200241, China; School of Geographic Sciences, East China Normal University, Shanghai, 200241, China
| | - Guoyu Yin
- Key Laboratory of Geographic Information Science (Ministry of Education), East China Normal University, Shanghai, 200241, China; School of Geographic Sciences, East China Normal University, Shanghai, 200241, China.
| | - Min Liu
- Key Laboratory of Geographic Information Science (Ministry of Education), East China Normal University, Shanghai, 200241, China; School of Geographic Sciences, East China Normal University, Shanghai, 200241, China
| | - Lijun Hou
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai, 200241, China
| | - Yi Yang
- Key Laboratory of Geographic Information Science (Ministry of Education), East China Normal University, Shanghai, 200241, China; School of Geographic Sciences, East China Normal University, Shanghai, 200241, China
| | - Xinran Liu
- Key Laboratory of Geographic Information Science (Ministry of Education), East China Normal University, Shanghai, 200241, China; School of Geographic Sciences, East China Normal University, Shanghai, 200241, China
| | - Yinghui Jiang
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai, 200241, China
| | - Cheng Chen
- Key Laboratory of Geographic Information Science (Ministry of Education), East China Normal University, Shanghai, 200241, China; School of Geographic Sciences, East China Normal University, Shanghai, 200241, China
| | - Han Wu
- Key Laboratory of Geographic Information Science (Ministry of Education), East China Normal University, Shanghai, 200241, China; School of Geographic Sciences, East China Normal University, Shanghai, 200241, China
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Wu L, An Z, Zhou J, Chen F, Liu B, Qi L, Yin G, Dong H, Liu M, Hou L, Zheng Y. Effects of Aquatic Acidification on Microbially Mediated Nitrogen Removal in Estuarine and Coastal Environments. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:5939-5949. [PMID: 35465670 DOI: 10.1021/acs.est.2c00692] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Acidification of estuarine and coastal waters is anticipated to influence nitrogen (N) removal processes, which are critical pathways for eliminating excess N from these ecosystems. We found that denitrification rates decreased significantly under acidified conditions (P < 0.05), which reduced by 41-53% in estuarine and coastal sediments under an approximately 0.3 pH reduction of the overlying water. However, the N removal rates through the anaerobic ammonium oxidation (anammox) process were concomitantly promoted under the same acidification conditions (increased by 47-109%, P < 0.05), whereas the total rates of N loss were significantly inhibited by aquatic acidification (P < 0.05), as denitrification remained the dominant N removal pathway. More importantly, the emission of nitrous oxide (N2O) from estuarine and coastal sediments was greatly stimulated by aquatic acidification (P < 0.05). Molecular analyses further demonstrated that aquatic acidification also altered the functional microbial communities in estuarine and coastal sediments; and the abundance of denitrifiers was significantly reduced (P < 0.05), while the abundance of anammox bacteria remained relatively stable. Collectively, this study reveals the effects of acidification on N removal processes and the underlying mechanisms and suggests that the intensifying acidification in estuarine and coastal waters might reduce the N removal function of these ecosystems, exacerbate eutrophication, and accelerate global climate change.
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Affiliation(s)
- Li Wu
- School of Geographic Sciences, East China Normal University, Shanghai 200241, China
- Key Laboratory of Geographic Information Science (Ministry of Education), East China Normal University, Shanghai 200241, China
| | - Zhirui An
- School of Geographic Sciences, East China Normal University, Shanghai 200241, China
- Key Laboratory of Geographic Information Science (Ministry of Education), East China Normal University, Shanghai 200241, China
| | - Jie Zhou
- State Key Laboratory of Estuarine and Coastal Research, Yangtze Delta Estuarine Wetland Ecosystem Observation and Research Station, Ministry of Education & Shanghai, East China Normal University, Shanghai 200241, China
| | - Feiyang Chen
- State Key Laboratory of Estuarine and Coastal Research, Yangtze Delta Estuarine Wetland Ecosystem Observation and Research Station, Ministry of Education & Shanghai, East China Normal University, Shanghai 200241, China
| | - Bolin Liu
- State Key Laboratory of Estuarine and Coastal Research, Yangtze Delta Estuarine Wetland Ecosystem Observation and Research Station, Ministry of Education & Shanghai, East China Normal University, Shanghai 200241, China
| | - Lin Qi
- School of Geographic Sciences, East China Normal University, Shanghai 200241, China
- Key Laboratory of Geographic Information Science (Ministry of Education), East China Normal University, Shanghai 200241, China
| | - Guoyu Yin
- School of Geographic Sciences, East China Normal University, Shanghai 200241, China
- Key Laboratory of Geographic Information Science (Ministry of Education), East China Normal University, Shanghai 200241, China
| | - Hongpo Dong
- State Key Laboratory of Estuarine and Coastal Research, Yangtze Delta Estuarine Wetland Ecosystem Observation and Research Station, Ministry of Education & Shanghai, East China Normal University, Shanghai 200241, China
| | - Min Liu
- School of Geographic Sciences, East China Normal University, Shanghai 200241, China
- Key Laboratory of Geographic Information Science (Ministry of Education), East China Normal University, Shanghai 200241, China
| | - Lijun Hou
- State Key Laboratory of Estuarine and Coastal Research, Yangtze Delta Estuarine Wetland Ecosystem Observation and Research Station, Ministry of Education & Shanghai, East China Normal University, Shanghai 200241, China
| | - Yanling Zheng
- School of Geographic Sciences, East China Normal University, Shanghai 200241, China
- Key Laboratory of Geographic Information Science (Ministry of Education), East China Normal University, Shanghai 200241, China
- State Key Laboratory of Estuarine and Coastal Research, Yangtze Delta Estuarine Wetland Ecosystem Observation and Research Station, Ministry of Education & Shanghai, East China Normal University, Shanghai 200241, China
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Using a clustering algorithm to identify patterns of valve-gaping behaviour in mussels reared under different environmental conditions. ECOL INFORM 2022. [DOI: 10.1016/j.ecoinf.2022.101659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Garner N, Ross PM, Falkenberg LJ, Seymour JR, Siboni N, Scanes E. Can seagrass modify the effects of ocean acidification on oysters? MARINE POLLUTION BULLETIN 2022; 177:113438. [PMID: 35276613 DOI: 10.1016/j.marpolbul.2022.113438] [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: 10/06/2021] [Revised: 02/02/2022] [Accepted: 02/05/2022] [Indexed: 06/14/2023]
Abstract
Solutions are being sought to ameliorate the impacts of anthropogenic climate change. Seagrass may be a solution to provide refugia from climate change for marine organisms. This study aimed to determine if the seagrass Zostera muelleri sub spp. capricorni benefits the Sydney rock oyster Saccostrea glomerata, and if these benefits can modify any anticipated negative impacts of ocean acidification. Future and ambient ocean acidification conditions were simulated in 52 L mesocosms at control (381 μatm) and elevated (848 μatm) CO2 with and without Z. muelleri. Oyster growth, physiology and microbiomes of oysters and seagrass were measured. Seagrass was beneficial to oyster growth at ambient pCO2, but did not positively modify the impacts of ocean acidification on oysters at elevated pCO2. Oyster microbiomes were altered by the presence of seagrass but not by elevated pCO2. Our results indicate seagrasses may not be a panacea for the impacts of climate change.
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Affiliation(s)
- Natasha Garner
- School of Life and Environmental Sciences, The University of Sydney, Camperdown, New South Wales 2006, Australia; The Sydney Institute of Marine Science (SIMS), Mosman, New South Wales 2088, Australia
| | - Pauline M Ross
- School of Life and Environmental Sciences, The University of Sydney, Camperdown, New South Wales 2006, Australia; The Sydney Institute of Marine Science (SIMS), Mosman, New South Wales 2088, Australia.
| | - Laura J Falkenberg
- Simon F.S. Li Marine Science Laboratory, School of Life Sciences, The Chinese University of Hong Kong, Hong Kong Special Administrative Region
| | - Justin R Seymour
- Climate Change Cluster, University of Technology Sydney, Ultimo, New South Wales 2007, Australia
| | - Nachshon Siboni
- Climate Change Cluster, University of Technology Sydney, Ultimo, New South Wales 2007, Australia
| | - Elliot Scanes
- School of Life and Environmental Sciences, The University of Sydney, Camperdown, New South Wales 2006, Australia; The Sydney Institute of Marine Science (SIMS), Mosman, New South Wales 2088, Australia; Climate Change Cluster, University of Technology Sydney, Ultimo, New South Wales 2007, Australia
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Shalders TC, Champion C, Coleman MA, Benkendorff K. The nutritional and sensory quality of seafood in a changing climate. MARINE ENVIRONMENTAL RESEARCH 2022; 176:105590. [PMID: 35255319 DOI: 10.1016/j.marenvres.2022.105590] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 02/14/2022] [Accepted: 02/19/2022] [Indexed: 06/14/2023]
Abstract
Climate change is impacting living marine resources, whilst concomitantly, global reliance on seafood as a source of nutrition is increasing. Here we review an emerging research frontier, identifying significant impacts of climate-driven environmental change on the nutritional and sensory quality of seafood, and implications for human health. We highlight that changing ocean temperature, pH and salinity can lead to reductions in seafood macro and micronutrients, including essential nutrients such as protein and lipids. However, the nutritional quality of seafood appears to be more resilient in taxa that inhabit naturally variable environments such as estuaries and shallow near-coastal habitats. We develop criteria for assessing confidence in categorising the nutritional quality of seafood as vulnerable or resilient to climate change. The application of this criteria to a subset of seafood nutritional studies demonstrates confidence levels are generally low and could be improved by more realistic experimental designs and research collaboration. We highlight knowledge gaps to guide future research in this emerging field.
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Affiliation(s)
- Tanika C Shalders
- National Marine Science Centre, Southern Cross University, Faculty of Science and Engineering, Coffs Harbour, New South Wales, Australia; Fisheries Research, NSW Department of Primary Industries, National Marine Science Centre, Coffs Harbour, New South Wales, Australia.
| | - Curtis Champion
- National Marine Science Centre, Southern Cross University, Faculty of Science and Engineering, Coffs Harbour, New South Wales, Australia; Fisheries Research, NSW Department of Primary Industries, National Marine Science Centre, Coffs Harbour, New South Wales, Australia
| | - Melinda A Coleman
- National Marine Science Centre, Southern Cross University, Faculty of Science and Engineering, Coffs Harbour, New South Wales, Australia; Fisheries Research, NSW Department of Primary Industries, National Marine Science Centre, Coffs Harbour, New South Wales, Australia
| | - Kirsten Benkendorff
- National Marine Science Centre, Southern Cross University, Faculty of Science and Engineering, Coffs Harbour, New South Wales, Australia
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Phylogenetic diversity and spatiotemporal dynamics of bacterial and microeukaryotic plankton communities in Gwangyang Bay of the Korean Peninsula. Sci Rep 2022; 12:2980. [PMID: 35194107 PMCID: PMC8863807 DOI: 10.1038/s41598-022-06624-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Accepted: 01/18/2022] [Indexed: 11/25/2022] Open
Abstract
Nutrient dynamics function globally, flowing from rivers to the ocean (estuarine–coastal zone), and are vulnerable to climate change. Microbial habitats can be affected by marine nutrient dynamics and may provide a clue to predict microbial responses to environmental heterogeneity in estuarine–coastal zones. We surveyed surface seawater in Gwangyang Bay, a semi-enclosed estuary in Korea, from 2016 to 2018 using a metabarcoding approach with prokaryotic 16S and eukaryotic 18S rRNA genes. Bacterial and microeukaryotic communities in these waters showed distinct local communities in response to environmental heterogeneity and community transition at spatiotemporal scales in the estuarine–coastal zone. The relative abundance of prokaryotic and eukaryotic operational taxonomic units suggested a microbial trophic interaction in the Gwangyang Bay waters. We found that the community assembly process in prokaryotic communities was primarily influenced by biological interaction (immigration–emigration), whereas that in eukaryotic communities was more affected by environmental stress (habitat specificity) rather than by biotic factors. Our findings in the Gwangyang Bay waters may provide information on underlying (biotic or abiotic) factors of the assembly process in microbial communities in the estuarine–coastal zone.
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Han L, Li Y, Zou Y, Gao X, Gu Y, Wang L. Relationship between lake salinity and the climatic gradient in northeastern China and its implications for studying climate change. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 805:150403. [PMID: 34818812 DOI: 10.1016/j.scitotenv.2021.150403] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 09/02/2021] [Accepted: 09/13/2021] [Indexed: 05/13/2023]
Abstract
The rising temperatures, increased evaporation, and altered precipitation patterns associated with global warming pose threats to aquatic ecosystems, especially the salinization of lake water and changes in the terrestrial carbon budget. We studied a series of samples of catchment soils, surface sediments, and sediment cores from 51 lakes and reservoirs covering an extensive climatic range in northeastern China. Measurements included salinity indices (electrical conductivity and pH) and other physicochemical parameters, including magnetic properties and color (chroma). The results indicate that the occurrence of salt minerals and the salinity of the lake sediments are dominated by the arid climatic conditions of the region. This enabled us to develop climatic transfer functions between salinity, precipitation and evaporation, with potential applications in paleoclimatic research. As carbonates are the dominant salts in most of the studied lakes and reservoirs, past salinity variations are likely reflected by changes in HCO3- and CO32- concentrations, which provides the opportunity to study the response of water-CO2-carbonate interactions to climate change. Our findings emphasize the important role of alkaline lakes in carbon burial and carbon neutralization, in the context of ongoing global warming.
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Affiliation(s)
- Long Han
- School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China; Key Laboratory of Computational Geodynamics, College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China; Molecular Fossil Laboratory, Testing and Analysis Center, University of Chinese Academy of Sciences, Beijing 101408, China
| | - Yumei Li
- Key Laboratory of Computational Geodynamics, College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China; Molecular Fossil Laboratory, Testing and Analysis Center, University of Chinese Academy of Sciences, Beijing 101408, China.
| | - Yafei Zou
- Yunnan Key Laboratory of Earth System Science, Yunnan University, Kunming 650500, China
| | - Xinbo Gao
- Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China
| | - Yongjian Gu
- Key Laboratory of Computational Geodynamics, College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China; Molecular Fossil Laboratory, Testing and Analysis Center, University of Chinese Academy of Sciences, Beijing 101408, China
| | - Luo Wang
- Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China
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Influences of Climate Change and Variability on Estuarine Ecosystems: An Impact Study in Selected European, South American and Asian Countries. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19010585. [PMID: 35010857 PMCID: PMC8744635 DOI: 10.3390/ijerph19010585] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 12/29/2021] [Accepted: 12/31/2021] [Indexed: 11/16/2022]
Abstract
It is well-known that climate change significantly impacts ecosystems (at the macro-level) and individual species (at the micro-level). Among the former, estuaries are the most vulnerable and affected ecosystems. However, despite the strong relations between climate change and estuaries, there is a gap in the literature regarding international studies across different regions investigating the impacts of climate change and variability on estuaries in different geographical zones. This paper addresses this need and reviews the impacts of climate change, variability and extreme weather on estuaries. It emphasises the following: (i) a set of climate parameters governing estuarine hydrology and processes; and (ii) a sample of countries in Asia (Bangladesh), Europe (Portugal) and South America (Uruguay). We reviewed the influences of the climatic drivers of the estuarine hydrology, ecological processes and specific species in estuarine communities across the selected geographical regions, along with an analysis of their long-term implications. The key results from the three estuaries are as following: (i) Hilsa fish, of which the catches contribute to 10% of the total earnings of the fishery sector (1% of GDP), are affected by climate-forced hydrological and productivity changes in the Meghna; (ii) extreme droughts and short-term severe precipitation have driven the long-term abundance and spatial distribution of both fish larvae and juveniles/adults in the Mondego; and (iii) the river inflow and fluctuations increases since the early 1970s have contributed to variations in the salinity, the stratification, the oxygen, nutrient and trophic levels and the spatial pattern for the life stages of planktonic species, fish biomass and captures in the Rio de la Plata. The results suggested that immediate action is needed to reduce the vulnerability of estuaries to climate stressors, mainly the changing river flows, storms and sea-level rise. As a contribution to addressing current problems, we described a set of adaptation strategies to foster climate resilience and adaptive capacity (e.g., early-warning systems, dam management to prevent overflows and adaptive fisheries management). The implications of this paper are two-fold. Firstly, it showcases a variety of problems that estuaries face from changing climate conditions. Secondly, the paper outlines the need for suitable adaptive management strategies to safeguard the integrity of such vital ecosystems.
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Tidal variability of water quality parameters in a mesotidal estuary (Sado Estuary, Portugal). Sci Rep 2021; 11:23112. [PMID: 34848797 PMCID: PMC8633344 DOI: 10.1038/s41598-021-02603-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 11/18/2021] [Indexed: 11/16/2022] Open
Abstract
To establish effective water quality monitoring strategies in estuaries, it is imperative to identify and understand the main drivers for the variation of water quality parameters. The tidal effect is an important factor of the daily and fortnightly variability in several estuaries. However, the extent of that influence on the different physicochemical and biological parameters is still overlooked in some estuarine systems, such as the Sado Estuary, a mesotidal estuary located on the west coast of Portugal. The main objective of this study was to determine how the water quality parameters of the Sado Estuary varied with the fortnightly and the semidiurnal tidal variation. To achieve this goal, sampling campaigns were conducted in May/18, Nov/18 and Jun/19, under neap and spring tidal conditions, with data collection over the tidal cycle. Results were observed to be significantly influenced by the tidal variation, in a large area of the estuary. Flood seemed to mitigate possible effects of nutrient enrichment in the water column. Additionally, significant differences were also observed when considering the different sampling stations. Temperature, Suspended Particulate Matter (SPM) and nutrients showed the highest values at low water. Lastly, the implications of the tidal variability in the evaluation of the water quality according to Water Framework Directive were also discussed, highlighting the importance of studying short-time scale variations and the worst-case scenario to ensure water quality is maintained. These findings are relevant for the implementation of regional management plans and to promote sustainable development.
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Ledet J, Campbell H, Byrne M, Poore AGB. Differential tolerance of species alters the seasonal response of marine epifauna to extreme warming. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 797:149215. [PMID: 34346350 DOI: 10.1016/j.scitotenv.2021.149215] [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: 04/23/2021] [Revised: 07/18/2021] [Accepted: 07/19/2021] [Indexed: 06/13/2023]
Abstract
Marine heatwaves are occurring with greater frequency and magnitude worldwide and can significantly alter community structure and ecosystem function. Predicting changes in community structure in extreme temperatures requires an understanding of variation among species in their thermal tolerance, and how potential acclimatization to recent temperatures influences survival. To address this, we determined the tolerance to extreme temperatures in a crustacean epifaunal assemblage that inhabits macroalgae in the southeast Australian ocean warming hotspot. Amphipods were the most abundant group and the thermal tolerance of the most abundant species (two in winter and four in summer) was tested to determine their thermal limits and probability of survival in near-future extreme temperatures. Survival, measured as time to immobilization, was compared across species, sexes, life stage and body size. The greatest variation in tolerance to extreme temperatures was among species (not body sizes or life stages), indicating that heatwaves could shift the composition of the macroalgal associated epifaunal assemblage. Comparison of recent thermal history (between 18 °C to 22 °C) revealed greater thermal tolerance of warm acclimatized individuals. Our results indicate that the impacts of a marine heatwave will depend on local species composition and their timing relative to recent climate conditions.
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Affiliation(s)
- Janine Ledet
- Evolution and Ecology Research Centre, School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, NSW 2052, Australia.
| | - Hamish Campbell
- School of Medical and Life and School of Environmental Sciences, University of Sydney, Sydney, NSW 2006, Australia
| | - Maria Byrne
- School of Medical and Life and School of Environmental Sciences, University of Sydney, Sydney, NSW 2006, Australia
| | - Alistair G B Poore
- Evolution and Ecology Research Centre, School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, NSW 2052, Australia
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Peng W, Wang D, Cai Y. Assessing Ecological Vulnerability under Climate Change and Anthropogenic Influence in the Yangtze River Estuarine Island-Chongming Island, China. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph182111642. [PMID: 34770154 PMCID: PMC8583347 DOI: 10.3390/ijerph182111642] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Revised: 10/15/2021] [Accepted: 11/03/2021] [Indexed: 11/16/2022]
Abstract
Understanding and assessing ecological vulnerability for estuarine islands are important for maintaining estuarine island ecosystem services and its sustainable development. However, due to its complex fresh water-sea-land interaction mechanism and multiple stressors from both climate change and anthropogenic influence, a comprehensive evaluation of ecological vulnerability for estuarine islands has been limited. Therefore, taking the typical estuary island of Chongming Island as an example, we developed a comprehensive evaluation system of ecological vulnerability for an estuarine island ecosystem based on the pressure-state-response (PSR) conceptual model, and explored the spatial and temporal distribution of ecological vulnerability in 2005 and 2015. The results indicated that the main pressures of Chongming Island from saltwater intrusion intensity and land use intensity were mainly distributed in northern coastal areas and eastern areas of wetland; the ecological vulnerability index (EV) of Chongming Island showed a slight decrease from 2005 to 2015; and three categories of towns based on ecological vulnerability assessment for an eco-island planning and environmental management were identified. Our study provides an effective evaluation system of ecological vulnerability for estuarine islands, which could be helpful for planners and decision makers in improving eco-island planning and environmental management.
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Affiliation(s)
- Wanting Peng
- School of Design & China Institute for Urban Governance, Shanghai Jiao Tong University, Shanghai 200240, China;
| | - Duoduo Wang
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China;
| | - Yongli Cai
- School of Design & China Institute for Urban Governance, Shanghai Jiao Tong University, Shanghai 200240, China;
- Correspondence:
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Scanes E, Parker LM, Seymour JR, Siboni N, Dove MC, O'Connor WA, Ross PM. Microbiomes of an oyster are shaped by metabolism and environment. Sci Rep 2021; 11:21112. [PMID: 34702926 PMCID: PMC8548560 DOI: 10.1038/s41598-021-00590-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Accepted: 10/14/2021] [Indexed: 11/24/2022] Open
Abstract
Microbiomes can both influence and be influenced by metabolism, but this relationship remains unexplored for invertebrates. We examined the relationship between microbiome and metabolism in response to climate change using oysters as a model marine invertebrate. Oysters form economies and ecosystems across the globe, yet are vulnerable to climate change. Nine genetic lineages of the oyster Saccostrea glomerata were exposed to ambient and elevated temperature and PCO2 treatments. The metabolic rate (MR) and metabolic by-products of extracellular pH and CO2 were measured. The oyster-associated bacterial community in haemolymph was characterised using 16 s rRNA gene sequencing. We found a significant negative relationship between MR and bacterial richness. Bacterial community composition was also significantly influenced by MR, extracellular CO2 and extracellular pH. The effects of extracellular CO2 depended on genotype, and the effects of extracellular pH depended on CO2 and temperature treatments. Changes in MR aligned with a shift in the relative abundance of 152 Amplicon Sequencing Variants (ASVs), with 113 negatively correlated with MR. Some spirochaete ASVs showed positive relationships with MR. We have identified a clear relationship between host metabolism and the microbiome in oysters. Altering this relationship will likely have consequences for the 12 billion USD oyster economy.
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Affiliation(s)
- Elliot Scanes
- School of Life and Environmental Sciences, The University of Sydney, Camperdown, NSW, 2006, Australia.
- Climate Change Cluster, University of Technology Sydney, Vicki Sara Building, Ultimo, NSW, 2007, Australia.
| | - Laura M Parker
- School of Biological, Earth and Environmental Sciences, The University of New South Wales, Kensington, NSW, 2052, Australia
| | - Justin R Seymour
- Climate Change Cluster, University of Technology Sydney, Vicki Sara Building, Ultimo, NSW, 2007, Australia
| | - Nachshon Siboni
- Climate Change Cluster, University of Technology Sydney, Vicki Sara Building, Ultimo, NSW, 2007, Australia
| | - Michael C Dove
- New South Wales Department of Primary Industries, Port Stephens Fisheries Institute, Taylors Beach, NSW, 2316, Australia
| | - Wayne A O'Connor
- New South Wales Department of Primary Industries, Port Stephens Fisheries Institute, Taylors Beach, NSW, 2316, Australia
| | - Pauline M Ross
- School of Life and Environmental Sciences, The University of Sydney, Camperdown, NSW, 2006, Australia
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Markich SJ. Comparative embryo/larval sensitivity of Australian marine bivalves to ten metals: A disjunct between physiology and phylogeny. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 789:147988. [PMID: 34323817 DOI: 10.1016/j.scitotenv.2021.147988] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 04/28/2021] [Accepted: 05/19/2021] [Indexed: 06/13/2023]
Abstract
Metal contamination within the urbanized coastal zon is one threat linked to a decline in the abundance, distribution and/or species diversity of wild marine bivalve populations. This study determined the 48-h embryo/larval sensitivity (no-effect concentration (NEC) and median-effect concentration (EC50)) of ten marine bivalve species (nine endemic to Australia) to aluminium (Al), cadmium (Cd), chromium (Cr), cobalt (Co), copper (Cu), iron (Fe), lead (Pb), manganese (Mn), nickel (Ni) and zinc (Zn), key metal contaminants impacting urbanized coastal zones in south-eastern Australia, in natural seawater (20-22 °C, 30‰ salinity, pH 7.8-7.9, 1.2 mg/L dissolved organic carbon). For all metals, except Fe, the order of sensitivity was oysters > mussels ≥ scallops ≥ cockles ≥ clams, where the economically-important oysters, Magallana gigas and Saccostrea glomerata, were 2.6 (Al) to 4.2 (Cd) times more sensitive than the least sensitive clam species. For all bivalve species, the order of metal sensitivity was Cu > Pb > Zn = Ni > Co > Cd > Al > Cr(VI) > Mn ≥ Fe(III), where Cu was eight times more toxic than Zn or Ni, 28 times more toxic than Cd, 220 times more toxic than Cr(VI) and 570 times more toxic than Fe(III). Iron, unlike the other nine soluble metals, occurred as particulate Fe(III) oxyhydroxide, where EC50 values decreased with increasing exposure time as the larval (D-veliger) stage. There was no significant (p > 0.05) effect of embryo/larval mass, or surface area/volume, on metal sensitivity. Further, there was no significant (p > 0.05) relationship between metal sensitivity and phylogeny (genetic distance). Divalent metal sensitivity was positively related (r2 = 0.87) to cell surface metal-binding affinity. The current Australian marine water quality guideline for Ni is not protective of the ten bivalve species (NECs were 2-6-fold below the guideline), while the guideline for Zn is not protective of oysters.
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Affiliation(s)
- Scott J Markich
- Aquatic Solutions International, North Narrabeen Beach, NSW 2101, Australia; Department of Earth and Environmental Sciences, Macquarie University, North Ryde, NSW 2109, Australia.
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Falkenberg LJ, Scanes E, Ducker J, Ross PM. Biotic habitats as refugia under ocean acidification. CONSERVATION PHYSIOLOGY 2021; 9:coab077. [PMID: 34540232 PMCID: PMC8445512 DOI: 10.1093/conphys/coab077] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 07/25/2021] [Accepted: 08/19/2021] [Indexed: 06/13/2023]
Abstract
Habitat-forming organisms have an important role in ameliorating stressful conditions and may be of particular relevance under a changing climate. Increasing CO2 emissions are driving a range of environmental changes, and one of the key concerns is the rapid acceleration of ocean acidification and associated reduction in pH. Such changes in seawater chemistry are anticipated to have direct negative effects on calcifying organisms, which could, in turn, have negative ecological, economic and human health impacts. However, these calcifying organisms do not exist in isolation, but rather are part of complex ecosystems. Here, we use a qualitative narrative synthesis framework to explore (i) how habitat-forming organisms can act to restrict environmental stress, both now and in the future; (ii) the ways their capacity to do so is modified by local context; and (iii) their potential to buffer the effects of future change through physiological processes and how this can be influenced by management adopted. Specifically, we highlight examples that consider the ability of macroalgae and seagrasses to alter water carbonate chemistry, influence resident organisms under current conditions and their capacity to do so under future conditions, while also recognizing the potential role of other habitats such as adjacent mangroves and saltmarshes. Importantly, we note that the outcome of interactions between these functional groups will be context dependent, influenced by the local abiotic and biotic characteristics. This dependence provides local managers with opportunities to create conditions that enhance the likelihood of successful amelioration. Where individuals and populations are managed effectively, habitat formers could provide local refugia for resident organisms of ecological and economic importance under an acidifying ocean.
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Affiliation(s)
- Laura J Falkenberg
- Simon F.S. Li Marine Science Laboratory, School of Life Sciences, The Chinese University of Hong Kong, Hong Kong SAR
| | - Elliot Scanes
- School of Life and Environmental Sciences, The University of Sydney, Camperdown, New South Wales, 2006, Australia
- Climate Change Cluster, University of Technology Sydney, Ultimo, New South Wales, 2007, Australia
| | - James Ducker
- Simon F.S. Li Marine Science Laboratory, School of Life Sciences, The Chinese University of Hong Kong, Hong Kong SAR
| | - Pauline M Ross
- School of Life and Environmental Sciences, The University of Sydney, Camperdown, New South Wales, 2006, Australia
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Howie AH, Bishop MJ. Contemporary Oyster Reef Restoration: Responding to a Changing World. Front Ecol Evol 2021. [DOI: 10.3389/fevo.2021.689915] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Globally, there is growing interest in restoring previously widespread oyster reefs to reinstate key ecosystem services such as shoreline protection, fisheries productivity and water filtration. Yet, since peak expiration of oysters in the 1800s, significant and ongoing environmental change has occurred. Estuaries and coasts are undergoing some of the highest rates of urbanization, warming and ocean acidification on the planet, necessitating novel approaches to restoration. Here, we review key design considerations for oyster reef restoration projects that maximize the probability that they will meet biological and socio-economic goals not only under present-day conditions, but into the future. This includes selection of sites, and where required, substrates and oyster species and genotypes for seeding, not only on the basis of their present and future suitability in supporting oyster survival, growth and reproduction, but also based on their match to specific goals of ecosystem service delivery. Based on this review, we provide a road map of design considerations to maximize the success of future restoration projects.
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Scanes E, Parker LM, Seymour JR, Siboni N, King WL, Wegner KM, Dove MC, O'Connor WA, Ross PM. Microbiome response differs among selected lines of Sydney rock oysters to ocean warming and acidification. FEMS Microbiol Ecol 2021; 97:6311813. [PMID: 34190992 DOI: 10.1093/femsec/fiab099] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Accepted: 06/28/2021] [Indexed: 12/12/2022] Open
Abstract
Oyster microbiomes are integral to healthy function and can be altered by climate change conditions. Genetic variation among oysters is known to influence the response of oysters to climate change and may ameliorate any adverse effects on oyster microbiome; however, this remains unstudied. Nine full-sibling selected breeding lines of the Sydney rock oyster (Saccostrea glomerata) were exposed to predicted warming (ambient = 24°C, elevated = 28°C) and ocean acidification (ambient pCO2 = 400, elevated pCO2 = 1000 µatm) for 4 weeks. The haemolymph bacterial microbiome was characterized using 16S rRNA (V3-V4) gene sequencing and varied among oyster lines in the control (ambient pCO2, 24°C) treatment. Microbiomes were also altered by climate change dependent on oyster lines. Bacterial α-diversity increased in response to elevated pCO2 in two selected lines, while bacterial β-diversity was significantly altered by combinations of elevated pCO2 and temperature in four selected lines. Climate change treatments caused shifts in the abundance of multiple amplicon sequence variants driving change in the microbiome of some selected lines. We show that oyster genetic background may influence the Sydney rock oyster haemolymph microbiome under climate change and that future assisted evolution breeding programs to enhance resilience should consider the oyster microbiome.
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Affiliation(s)
- Elliot Scanes
- Climate Change Cluster, University of Technology Sydney, Ultimo, New South Wales 2007, Australia.,The University of Sydney, School of Life and Environmental Sciences, Camperdown, New South Wales 2006, Australia
| | - Laura M Parker
- The University of New South Wales, School of Biological, Earth and Environmental Sciences, Kensington, New South Wales 2052, Australia
| | - Justin R Seymour
- Climate Change Cluster, University of Technology Sydney, Ultimo, New South Wales 2007, Australia
| | - Nachshon Siboni
- Climate Change Cluster, University of Technology Sydney, Ultimo, New South Wales 2007, Australia
| | - William L King
- Climate Change Cluster, University of Technology Sydney, Ultimo, New South Wales 2007, Australia.,Department of Plant Pathology and Environmental Microbiology, The Pennsylvania State University, University Park, PA 16802, USA
| | - K Mathias Wegner
- Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Coastal Ecology, Wadden Sea Station Sylt, List 25992, Germany
| | - Michael C Dove
- New South Wales Department of Primary Industries, Port Stephens Fisheries Institute, Taylors Beach, New South Wales 2316, Australia
| | - Wayne A O'Connor
- New South Wales Department of Primary Industries, Port Stephens Fisheries Institute, Taylors Beach, New South Wales 2316, Australia
| | - Pauline M Ross
- The University of Sydney, School of Life and Environmental Sciences, Camperdown, New South Wales 2006, Australia
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