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Soru S, Berlino M, Sarà G, Mangano MC, De Vittor C, Pusceddu A. Effects of acidification on the biogeochemistry of unvegetated and seagrass marine sediments. MARINE POLLUTION BULLETIN 2024; 199:115983. [PMID: 38277962 DOI: 10.1016/j.marpolbul.2023.115983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 12/22/2023] [Accepted: 12/23/2023] [Indexed: 01/28/2024]
Abstract
Many studies addressed ocean acidification (OA) effects on marine life, whereas its effects on sedimentary organic matter (OM) have received less attention. We investigated differences in OM features in sediments from unvegetated and seagrass (Posidonia oceanica) beds in a shallow hydrothermal area (Aeolian Archipelago, Mediterranean Sea), under natural (8.1-8.0) and acidified (7.8-7.9) conditions. We show that a pH difference of -0.3 units have minor effects on OM features in unvegetated sediments, but relevant consequences within acidified seagrass meadows, where OM quantity and nutritional quality are lower than those under natural pH conditions. Effects of acidified conditions on OM biogeochemistry vary between unvegetated and seagrass sediments, with lower C degradation rates and longer C turnover time in the former than in the latter. We conclude that OA, although with effects not consistent between unvegetated and vegetated sediments, can affect OM quantity, composition, and degradation, thus having possible far-reaching consequences for benthic trophic webs.
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Affiliation(s)
- Santina Soru
- Department of Life and Environmental Sciences, University of Cagliari, Via Fiorelli 1, 09126 Cagliari, Italy.
| | - Manuel Berlino
- Stazione Zoologica Anton Dohrn, Department of Integrative Marine Ecology (EMI), Sicily Marine Centre, Lungomare Cristoforo Colombo (complesso Roosevelt), 90149 Palermo, Italy; NBFC, National Biodiversity Future Center, Palermo Piazza Marina 61, 90133 Palermo, Italy.
| | - Gianluca Sarà
- NBFC, National Biodiversity Future Center, Palermo Piazza Marina 61, 90133 Palermo, Italy; Department of Earth and Marine Sciences, University of Palermo, Viale delle Scienze Ed. 16, 90128 Palermo, Italy.
| | - Maria Cristina Mangano
- Stazione Zoologica Anton Dohrn, Department of Integrative Marine Ecology (EMI), Sicily Marine Centre, Lungomare Cristoforo Colombo (complesso Roosevelt), 90149 Palermo, Italy; NBFC, National Biodiversity Future Center, Palermo Piazza Marina 61, 90133 Palermo, Italy.
| | - Cinzia De Vittor
- NBFC, National Biodiversity Future Center, Palermo Piazza Marina 61, 90133 Palermo, Italy; National Institute of Oceanography and Applied Geophysics - OGS, 34010 Trieste, Italy.
| | - Antonio Pusceddu
- Department of Life and Environmental Sciences, University of Cagliari, Via Fiorelli 1, 09126 Cagliari, Italy.
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2
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Roche B, White PR, Bull JM, Leighton TG, Li J, Christie C, Fone J. Methods of acoustic gas flux inversion-Investigation into the initial amplitude of bubble excitation. THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA 2022; 152:799. [PMID: 36050165 DOI: 10.1121/10.0013220] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 07/13/2022] [Indexed: 06/15/2023]
Abstract
Passive acoustic inversion techniques for measuring gas flux into the water column have the potential to be a powerful tool for the long-term monitoring and quantification of natural marine seeps and anthropogenic emissions. Prior inversion techniques have had limited precision due to lack of constraints on the initial amplitude of a bubble's excitation following its release into the water column ( R). R is determined by observing the acoustic signal of bubbles released from sediment in a controlled experiment and its use is demonstrated by quantifying the flux from a volcanic CO2 seep offshore Panarea (Italy), improving the precision by 78%.
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Affiliation(s)
- Ben Roche
- School of Ocean and Earth Science, National Oceanography Centre Southampton, University of Southampton Waterfront Campus, European Way, Southampton, United Kingdom
| | - Paul R White
- Institute of Sound and Vibration Research, University of Southampton, Southampton, United Kingdom
| | - Jonathan M Bull
- School of Ocean and Earth Science, National Oceanography Centre Southampton, University of Southampton Waterfront Campus, European Way, Southampton, United Kingdom
| | - Timothy G Leighton
- Institute of Sound and Vibration Research, University of Southampton, Southampton, United Kingdom
| | - Jianghui Li
- School of Ocean and Earth Science, National Oceanography Centre Southampton, University of Southampton Waterfront Campus, European Way, Southampton, United Kingdom
| | - Colin Christie
- School of Ocean and Earth Science, National Oceanography Centre Southampton, University of Southampton Waterfront Campus, European Way, Southampton, United Kingdom
| | - Joseph Fone
- School of Ocean and Earth Science, National Oceanography Centre Southampton, University of Southampton Waterfront Campus, European Way, Southampton, United Kingdom
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Structural and Functional Analyses of Motile Fauna Associated with Cystoseira brachycarpa along a Gradient of Ocean Acidification in a CO2-Vent System off Panarea (Aeolian Islands, Italy). JOURNAL OF MARINE SCIENCE AND ENGINEERING 2022. [DOI: 10.3390/jmse10040451] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Ocean acidification (OA), one of the main climate-change-related stressors linked to increasing CO2 concentration in the atmosphere, is considered an important threat to marine biodiversity and habitats. Studies on CO2-vents systems, naturally acidified environments that mimic future ocean scenarios, help to explore the sensitivity of species and to understand how benthic communities rearrange their structure and functioning under the pressure of OA. We addressed this problem by studying the benthic invertebrates associated with a habitat-forming brown alga (Cystoseira brachycarpa) in the Bottaro crater vents system off Panarea island (Tyrrhenian Sea, Italy), by sampling along an OA gradient from the proximity of the main venting area (station B3, pH 7.9) to a control zone (B1 station, pH 8.1). Samples were collected in September 2016 and 2018. A total of 184 taxa and 23 different functional traits have been identified, considering feeding habit, motility, size, reproductive and developmental biology, and occurrence of calcareous structures. Invertebrates are distributed according to the distance from the high venting zone and low pH levels and results very consistent between the two investigated years. In the low-pH area (B3), 43% of the species are selected. The functional traits of the fauna mirror this zonation pattern, mainly changing the relative proportion of the number of individuals of the various functional guilds along the OA gradient. Invertebrates inhabiting the low-pH zone are mainly composed of weakly or non-calcified species, with small size, burrower/tubicolous habit, omnivorous or suspension feeders, and with direct development and brooding habit. In the other stations, heavily calcified forms, herbivore and herbivore/detritivore, and with medium (1–5 cm) and large (>5 cm) sizes prevail, showing indirect benthic and planktic development. The taxonomic analysis, coupled with functional aspects, increases our prediction of which traits could be potentially more advantageous for species to adapt to the hypothesized scenarios of OA, and identify present and future winner and/or loser organisms in the future ocean of the Anthropocene.
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Ecological and Biotechnological Relevance of Mediterranean Hydrothermal Vent Systems. MINERALS 2022. [DOI: 10.3390/min12020251] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
Marine hydrothermal systems are a special kind of extreme environments associated with submarine volcanic activity and characterized by harsh chemo-physical conditions, in terms of hot temperature, high concentrations of CO2 and H2S, and low pH. Such conditions strongly impact the living organisms, which have to develop adaptation strategies to survive. Hydrothermal systems have attracted the interest of researchers due to their enormous ecological and biotechnological relevance. From ecological perspective, these acidified habitats are useful natural laboratories to predict the effects of global environmental changes, such as ocean acidification at ecosystem level, through the observation of the marine organism responses to environmental extremes. In addition, hydrothermal vents are known as optimal sources for isolation of thermophilic and hyperthermophilic microbes, with biotechnological potential. This double aspect is the focus of this review, which aims at providing a picture of the ecological features of the main Mediterranean hydrothermal vents. The physiological responses, abundance, and distribution of biotic components are elucidated, by focusing on the necto-benthic fauna and prokaryotic communities recognized to possess pivotal role in the marine ecosystem dynamics and as indicator species. The scientific interest in hydrothermal vents will be also reviewed by pointing out their relevance as source of bioactive molecules.
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Sokołowski A, Świeżak J, Hallmann A, Olsen AJ, Ziółkowska M, Øverjordet IB, Nordtug T, Altin D, Krause DF, Salaberria I, Smolarz K. Cellular level response of the bivalve Limecola balthica to seawater acidification due to potential CO 2 leakage from a sub-seabed storage site in the southern Baltic Sea: TiTank experiment at representative hydrostatic pressure. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 794:148593. [PMID: 34323752 DOI: 10.1016/j.scitotenv.2021.148593] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 06/15/2021] [Accepted: 06/17/2021] [Indexed: 06/13/2023]
Abstract
Understanding of biological responses of marine fauna to seawater acidification due to potential CO2 leakage from sub-seabed storage sites has improved recently, providing support to CCS environmental risk assessment. Physiological responses of benthic organisms to ambient hypercapnia have been previously investigated but rarely at the cellular level, particularly in areas of less common geochemical and ecological conditions such as brackish water and/or reduced oxygen levels. In this study, CO2-related responses of oxygen-dependent, antioxidant and detoxification systems as well as markers of neurotoxicity and acid-base balance in the Baltic clam Limecola balthica from the Baltic Sea were quantified in 50-day experiments. Experimental conditions included CO2 addition producing pH levels of 7.7, 7.0 and 6.3, respectively and hydrostatic pressure 900 kPa, simulating realistic seawater acidities following a CO2 seepage accident at the potential CO2-storage site in the Baltic. Reduced pH interfered with most biomarkers studied, and modifications to lactate dehydrogenase and malate dehydrogenase indicate that aerobiosis was a dominant energy production pathway. Hypercapnic stress was most evident in bivalves exposed to moderately acidic seawater environment (pH 7.0), showing a decrease of glutathione peroxidase activity, activation of catalase and suppression of glutathione S-transferase activity likely in response to enhanced free radical production. The clams subjected to pH 7.0 also demonstrated acetylcholinesterase activation that might be linked to prolonged impact of contaminants released from sediment. The most acidified conditions (pH 6.3) stimulated glutathione and malondialdehyde concentration in the bivalve tissue suggesting potential cell damage. Temporal variations of most biomarkers imply that after a 10-to-15-day initial phase of an acute disturbance, the metabolic and antioxidant defence systems recovered their capacities.
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Affiliation(s)
- Adam Sokołowski
- University of Gdańsk, Faculty of Oceanography and Geography, Institute of Oceanography, Al. Piłsudskiego 46, 81-378 Gdynia, Poland
| | - Justyna Świeżak
- University of Gdańsk, Faculty of Oceanography and Geography, Institute of Oceanography, Al. Piłsudskiego 46, 81-378 Gdynia, Poland.
| | - Anna Hallmann
- Medical University of Gdańsk, Department of Pharmaceutical Biochemistry, Dębinki 1, 80-211 Gdańsk, Poland
| | - Anders J Olsen
- Norwegian University of Science and Technology, NO-7491 Trondheim, Norway
| | - Marcelina Ziółkowska
- University of Gdańsk, Faculty of Oceanography and Geography, Institute of Oceanography, Al. Piłsudskiego 46, 81-378 Gdynia, Poland
| | | | - Trond Nordtug
- SINTEF Ocean AS, Brattorkaia 17C, NO-7465 Trondheim, Norway
| | - Dag Altin
- Altins Biotrix, Finn Bergs veg 3, 7022 Trondheim, Norway
| | | | - Iurgi Salaberria
- Norwegian University of Science and Technology, NO-7491 Trondheim, Norway
| | - Katarzyna Smolarz
- University of Gdańsk, Faculty of Oceanography and Geography, Institute of Oceanography, Al. Piłsudskiego 46, 81-378 Gdynia, Poland
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Borrero-Santiago AR, Ribicic D, Bonnail E, Netzer R, Koseto D, Ardelan MV. Response of bacterial communities in Barents Sea sediments in case of a potential CO 2 leakage from carbon reservoirs. MARINE ENVIRONMENTAL RESEARCH 2020; 160:105050. [PMID: 32907742 DOI: 10.1016/j.marenvres.2020.105050] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 06/04/2020] [Accepted: 06/09/2020] [Indexed: 06/11/2023]
Abstract
Carbon capture and storage sites in Barents Sea shelf are currently in progress as part of climate change mitigation activities. However environmental impacts of a possible CO2 seepage on bacterial community are lacking knowledge. This work addressed potential consequences on bacterial communities from Snøvit region in Barents Sea sediments. Long-term experiment (92 days) was carried out mimicking realistic conditions of pressure (∼30 bars) using the unique hyperbaric chamber (Karl Erik TiTank). The experiment was divided in three stages: i) 21 days of no CO2, ii) 50 days of simulation of carbon dioxide leakage (depletion of pH to 7.0) and iii) 14 days emulating a leakage cessation. Results suggested that bacterial communities can adapt to a CO2 leakage in short term. However, bacteria showed negative effects in terms of activity, community structure, and number of cells after long term CO2 exposure. After CO2 leakage cessation, bacterial communities did not show a significant recovery. These findings highlighted that, even though marine bacteria showed adaptation to the new conditions (acidified environment), in case of a small but continuous CO2 leakage marine bacteria might not be recovered upon pre-exposure status.
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Affiliation(s)
- A R Borrero-Santiago
- Norwegian University of Science and Technology, Department of Chemistry, 7491, Trondheim, Norway.
| | - Deni Ribicic
- SINTEF Ocean, Department of Environment and New Resources, Brattørkaia 17c, 7010, Trondheim, Norway
| | - Estefania Bonnail
- Centro de Investigaciones Costeras-Universidad de Atacama (CIC-UDA), Avenida Copayapu 485, University of Atacama, Copiapó, Chile
| | - Roman Netzer
- SINTEF Ocean, Department of Environment and New Resources, Brattørkaia 17c, 7010, Trondheim, Norway
| | - Deni Koseto
- SINTEF Industry, Department of Biotechnology and Nanomedicine, P.O.Box 4760 Torgarden, 7465, Trondheim, Norway
| | - M V Ardelan
- Norwegian University of Science and Technology, Department of Chemistry, 7491, Trondheim, Norway
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Palanivel PS, Veeraiyan B, Palingam G, Perumal M. Influence of physico-chemical parameters and pCO2 concentration on mangroves-associated polychaetes at Pichavaram, southeast coast of India. SN APPLIED SCIENCES 2019. [DOI: 10.1007/s42452-019-1581-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Rastelli E, Corinaldesi C, Dell'Anno A, Tangherlini M, Lo Martire M, Nishizawa M, Nomaki H, Nunoura T, Danovaro R. Drivers of Bacterial α- and β-Diversity Patterns and Functioning in Subsurface Hadal Sediments. Front Microbiol 2019; 10:2609. [PMID: 31798555 PMCID: PMC6868121 DOI: 10.3389/fmicb.2019.02609] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 10/28/2019] [Indexed: 12/28/2022] Open
Abstract
Oceanic trenches at hadal (>6,000 m) depths are hot spots of organic matter deposition and mineralization and can host abundant and active bacterial assemblages. However, the factors able to shape their biodiversity and functioning remain largely unexplored, especially in subsurface sediments. Here, we investigated the patterns and drivers of benthic bacterial α- and β-diversity (i.e., OTU richness and turnover diversity) along the vertical profile down to 1.5 m sediment depth in the Izu-Bonin Trench (at ~10,000 m water depth). The protease and glucosidase enzymatic activity rates were also determined, as a proxy of organic matter degradation potential in the different sediment layers. Molecular fingerprinting based on automated ribosomal intergenic spacer analysis (ARISA) indicated that the α-diversity of bacterial assemblages remained high throughout the vertical profile and that the turnover (β-) diversity among sediment horizons reached values up to 90% of dissimilarity. Multivariate distance-based linear modeling (DISTLM) pointed out that the diversity and functioning of the hadal bacterial assemblages were influenced by the variability of environmental conditions (including the availability of organic resources and electron donors/acceptors) and of viral production rates along the sediment vertical profile. Based on our results, we can argue that the heterogeneity of physical-chemical features of the hadal sediments of the Izu-Bonin Trench contribute to increase the niches availability for different bacterial taxa, while viruses contribute to maintain high levels of bacterial turnover diversity and to enhance organic matter cycling in these extremely remote and isolated ecosystems.
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Affiliation(s)
- Eugenio Rastelli
- Department of Marine Biotechnology, Stazione Zoologica Anton Dohrn, Naples, Italy
| | - Cinzia Corinaldesi
- Department of Materials, Environmental Sciences and Urban Planning, Polytechnic University of Marche, Ancona, Italy
| | - Antonio Dell'Anno
- Department of Life and Environmental Sciences, Polytechnic University of Marche, Ancona, Italy
| | - Michael Tangherlini
- Department of Research Infrastructures for Marine Biological Resources, Stazione Zoologica Anton Dohrn, Naples, Italy
| | - Marco Lo Martire
- Department of Life and Environmental Sciences, Polytechnic University of Marche, Ancona, Italy
| | - Manabu Nishizawa
- Institute for Extra-cutting-edge Science and Technology Avant-garde Research (X-star), Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokosuka, Japan
| | - Hidetaka Nomaki
- Institute for Extra-cutting-edge Science and Technology Avant-garde Research (X-star), Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokosuka, Japan
| | - Takuro Nunoura
- Research Center for Bioscience and Nanoscience (CeBN), Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokosuka, Japan
| | - Roberto Danovaro
- Department of Marine Biotechnology, Stazione Zoologica Anton Dohrn, Naples, Italy.,Department of Life and Environmental Sciences, Polytechnic University of Marche, Ancona, Italy
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Hua E, Sun Y, Zhang Z, He L, Cui C, Mu F. Effects of reduced seawater pH on nematode community composition and diversity in sandy sediments. MARINE ENVIRONMENTAL RESEARCH 2019; 150:104773. [PMID: 31450037 DOI: 10.1016/j.marenvres.2019.104773] [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: 01/04/2019] [Revised: 08/01/2019] [Accepted: 08/15/2019] [Indexed: 06/10/2023]
Abstract
The present study investigated the potential effects of seawater acidification on the taxonomic structure and diversity of nematode communities using a microcosm experiment. Nematode samples for the microcosm experiment were collected from the low tidal zone of two sandy beaches with different sediment compositions (medium sand vs. very fine sand) in Qingdao (China). In the microcosm, nematode communities were exposed to nine experimental treatments comprising two pH levels for 56 days: 8.0 (ambient control) and 7.3. Communities were exposed for 0, 7, 14, 28, or 56 days. Results showed that the most distinguishable differences in nematode community structure and diversity indices were caused by sediment type. Reduced pH changed the taxonomic structure of nematode communities in medium sand sediments. An increase in species with higher tolerance to lowered pH occurred as a response and resulted in increased diversity in medium sand sediments. Nematode communities in finer sediments appeared less sensitive to reduced pH.
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Affiliation(s)
- Er Hua
- College of Marine Life Science, Ocean University of China, 5 Yushan Road, Qingdao, 266003, PR China
| | - Yantao Sun
- College of Marine Life Science, Ocean University of China, 5 Yushan Road, Qingdao, 266003, PR China
| | - Zhinan Zhang
- College of Marine Life Science, Ocean University of China, 5 Yushan Road, Qingdao, 266003, PR China
| | - Lei He
- College of Marine Life Science, Ocean University of China, 5 Yushan Road, Qingdao, 266003, PR China
| | - Chunyan Cui
- College of Marine Life Science, Ocean University of China, 5 Yushan Road, Qingdao, 266003, PR China
| | - Fanghong Mu
- College of Marine Life Science, Ocean University of China, 5 Yushan Road, Qingdao, 266003, PR China.
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