1
|
Bednaršek N, Pelletier G, Beck MW, Feely RA, Siegrist Z, Kiefer D, Davis J, Peabody B. Predictable patterns within the kelp forest can indirectly create temporary refugia from ocean acidification. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 945:174065. [PMID: 38897470 DOI: 10.1016/j.scitotenv.2024.174065] [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: 11/14/2023] [Revised: 06/04/2024] [Accepted: 06/15/2024] [Indexed: 06/21/2024]
Abstract
Kelps are recognized for providing many ecosystem services in coastal areas and considered in ocean acidification (OA) mitigation. However, assessing OA modification requires an understanding of the multiple parameters involved in carbonate chemistry, especially in highly dynamic systems. We studied the effects of sugar kelp (Saccharina latissima) on an experimental farm at the north end of Hood Canal, Washington-a low retentive coastal system. In this field mesocosm study, two oyster species (Magallana gigas, Ostrea lurida) were exposed at locations in the mid, edge, and outside the kelp array. The Hood Head Sugar Kelp Farm Model outputs were used to identify dominating factors in spatial and temporal kelp dynamics, while wavelet spectrum analyses helped in understanding predictability patterns. This was linked to the measured biological responses (dissolution, growth, isotopes) of the exposed organisms. Positioned in an area of high (sub)-diel tidal fluxes with low retention potential, there were no measurable alterations of the seawater pH at the study site, demonstrating that the kelp array could not induce a direct mitigating effect against OA. However, beneficial responses in calcifiers were still observed, which are linked to two causes: increased pH predictability and improved provisioning through kelp-derived particulate organic resource utilization and as such, kelp improved habitat suitability and indirectly created refugia against OA. This study can serve as an analogue for many coastal bay habitats where prevailing physical forcing drives chemical changes. Future macrophyte studies that investigate OA mitigating effects should focus also on the importance of predictability patterns, which can additionally improve the conditions for marine calcifiers and ecosystem services vulnerable to or compromised by OA, including aquaculture sustainability.
Collapse
Affiliation(s)
- Nina Bednaršek
- Cooperative Institute for Marine Resources Studies, Hatfield Marine Science Center, 2030 SE Marine Science Drive Newport, OR 97365, Oregon State University, USA; Institute Jožef Stefan, 1000 Ljubljana, Slovenia.
| | - Greg Pelletier
- Washington Department of Ecology, Olympia, 300 Desmond Dr SE, WA 98503,(Emeritus), USA
| | - Marcus W Beck
- Tampa Bay Estuary Program, St. Petersburg, FL 33701, USA
| | - Richard A Feely
- NOAA Pacific Marine Environmental Laboratory, Seattle, WA 98115, USA
| | - Zach Siegrist
- System Science Applications, Inc, Renton, Washington, USA
| | - Dale Kiefer
- University of Southern California, Los Angeles, CA 90089, USA
| | - Jonathan Davis
- Puget Sound Restoration Fund, Bainbridge Island, WA, 98110, USA
| | | |
Collapse
|
2
|
Segaran TC, Azra MN, Mohd Noor MI, Danish-Daniel M, Burlakovs J, Lananan F, Xu J, Kari ZA, Wei LS. Knowledge mapping analysis of the global seaweed research using CiteSpace. Heliyon 2024; 10:e28418. [PMID: 38560172 PMCID: PMC10981124 DOI: 10.1016/j.heliyon.2024.e28418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 03/10/2024] [Accepted: 03/19/2024] [Indexed: 04/04/2024] Open
Abstract
Seaweed research has gained substantial momentum in recent years, attracting the attention of researchers, academic institutions, industries, policymakers, and philanthropists to explore its potential applications and benefits. Despite the growing body of literature, there is a paucity of comprehensive scientometric analyses, highlighting the need for an in-depth investigation. In this study, we utilized CiteSpace to examine the global seaweed research landscape through the Web of Science Core Collection database, assessing publication trends, collaboration patterns, network structures, and co-citation analyses across 48,278 original works published since 1975. Our results demonstrate a diverse and active research community, with a multitude of authors and journals contributing to the advancement of seaweed science. Thematic co-citation cluster analysis identified three primary research areas: "Coral reef," "Solar radiation," and "Mycosporine-like amino acid," emphasizing the multidisciplinary nature of seaweed research. The increasing prominence of "Chemical composition" and "Antioxidant" keywords indicates a burgeoning interest in characterizing the nutritional value and health-promoting properties of seaweed. Timeline co-citation analysis unveils that recent research priorities have emerged around the themes of coral reefs, ocean acidification, and antioxidants, underlining the evolving focus and interdisciplinary approach of the field. Moreover, our analysis highlights the potential of seaweed as a functional food product, poised to contribute significantly to addressing global food security and sustainability challenges. This study underscores the importance of bibliometric analysis in elucidating the global seaweed research landscape and emphasizes the need for sustained knowledge exchange and collaboration to drive the field forward. By revealing key findings and emerging trends, our research offers valuable insights for academics and stakeholders, fostering a more profound understanding of seaweed's potential and informing future research endeavors in this promising domain.
Collapse
Affiliation(s)
- Thirukanthan Chandra Segaran
- Institute of Climate Adaptation and Marine Biotechnology (ICAMB), Universiti Malaysia Terengganu (UMT), Kuala Nerus, 21030, Terengganu, Malaysia
| | - Mohamad Nor Azra
- Institute of Climate Adaptation and Marine Biotechnology (ICAMB), Universiti Malaysia Terengganu (UMT), Kuala Nerus, 21030, Terengganu, Malaysia
- Research Center for Marine and Land Bioindustry, Earth Sciences and Maritime Organization, National Research and Innovation Agency (BRIN), Pemenang, 83352, Indonesia
| | - Mohd Iqbal Mohd Noor
- Faculty of Business Management, Universiti Teknologi MARA (UiTM) (Pahang), 27600, Raub, Pahang, Malaysia
- Institute for Biodiversity and Sustainable Development, Universiti Teknologi MARA (UiTM), 40450, Shah Alam, Selangor, Malaysia
| | - Muhd Danish-Daniel
- Institute of Climate Adaptation and Marine Biotechnology (ICAMB), Universiti Malaysia Terengganu (UMT), Kuala Nerus, 21030, Terengganu, Malaysia
| | - Juris Burlakovs
- Mineral and Energy Economy Research Institute of the Polish Academy of Sciences, Poland
| | - Fathurrahman Lananan
- Faculty of Bioresources and Food Industry, Universiti Sultan Zainal Abidin, 22200 Besut, Terengganu, 21300, Malaysia
| | - Juntian Xu
- School of Marine Science and Fisheries, Jiangsu Ocean University, No. 59 Cangwu Road, Haizhou District, Lianyungang City, Jiangsu, China
| | - Zulhisyam Abdul Kari
- Department of Agricultural Science, Faculty of Agro-Based Industry, Universiti Malaysia Kelantan, 17600, Jeli, Kelantan, Malaysia
| | - Lee Seong Wei
- Department of Agricultural Science, Faculty of Agro-Based Industry, Universiti Malaysia Kelantan, 17600, Jeli, Kelantan, Malaysia
- Tropical Rainforest Research Centre (TRaCe), Universiti Malaysia Kelantan, Pulau Banding, 33300, Gerik, Perak, Malaysia
| |
Collapse
|
3
|
Ravaglioli C, De Marchi L, Anselmi S, Dattolo E, Fontanini D, Pretti C, Procaccini G, Rilov G, Renzi M, Silverman J, Bulleri F. Ocean acidification impairs seagrass performance under thermal stress in shallow and deep water. ENVIRONMENTAL RESEARCH 2024; 241:117629. [PMID: 37967703 DOI: 10.1016/j.envres.2023.117629] [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: 08/09/2023] [Revised: 10/21/2023] [Accepted: 11/07/2023] [Indexed: 11/17/2023]
Abstract
Despite the effects of ocean acidification (OA) on seagrasses have been widely investigated, predictions of seagrass performance under future climates need to consider multiple environmental factors. Here, we performed a mesocosm study to assess the effects of OA on shallow and deep Posidonia oceanica plants. The experiment was run in 2021 and repeated in 2022, a year characterized by a prolonged warm water event, to test how the effects of OA on plants are modulated by thermal stress. The response of P. oceanica to experimental conditions was investigated at different levels of biological organization. Under average seawater temperature, there were no effects of OA in both shallow and deep plants, indicating that P. oceanica is not limited by current inorganic carbon concentration, regardless of light availability. In contrast, under thermal stress, exposure of plants to OA increased lipid peroxidation and decreased photosynthetic performance, with deep plants displaying higher levels of heat stress, as indicated by the over-expression of stress-related genes and the activation of antioxidant systems. In addition, warming reduced plant growth, regardless of seawater CO2 and light levels, suggesting that thermal stress may play a fundamental role in the future development of seagrass meadows. Our results suggest that OA may exacerbate the negative effects of future warming on seagrasses.
Collapse
Affiliation(s)
- Chiara Ravaglioli
- Dipartimento di Biologia, Università di Pisa, CoNISMa, Via Derna 1, 56126, Pisa, Italy.
| | - Lucia De Marchi
- Dipartimento di Scienze Veterinarie, Università of Pisa, Via Livornese (lato monte), 56122, San Piero a Grado, Pisa, Italy.
| | - Serena Anselmi
- Bioscience Research Center, Via Aurelia Vecchia, 32, 58015, Orbetello, GR, Italy.
| | - Emanuela Dattolo
- Stazione Zoologica Anton Dohrn, Villa Comunale, 80121, Napoli, Italy; National Biodiversity Future Centre (NBFC), Palermo, Italy.
| | - Debora Fontanini
- Dipartimento di Biologia, Università di Pisa, CoNISMa, Via Derna 1, 56126, Pisa, Italy.
| | - Carlo Pretti
- Dipartimento di Scienze Veterinarie, Università of Pisa, Via Livornese (lato monte), 56122, San Piero a Grado, Pisa, Italy; Interuniversity Consortium of Marine Biology and Applied Ecology "G. Bacci" (CIBM), Viale N.Sauro 4, 57128, Livorno, Italy.
| | - Gabriele Procaccini
- Stazione Zoologica Anton Dohrn, Villa Comunale, 80121, Napoli, Italy; National Biodiversity Future Centre (NBFC), Palermo, Italy.
| | - Gil Rilov
- National Institute of Oceanography, Israel Oceanographic and Limnological Research, Haifa, Israel.
| | - Monia Renzi
- Dipartimento di Scienze Della Vita, Università di Trieste, Via Giorgieri, 10, 34127, Trieste, Italy.
| | - Jacob Silverman
- National Institute of Oceanography, Israel Oceanographic and Limnological Research, Haifa, Israel.
| | - Fabio Bulleri
- Dipartimento di Biologia, Università di Pisa, CoNISMa, Via Derna 1, 56126, Pisa, Italy; Centro Interdipartimentale di Ricerca per Lo Studio Degli Effetti Del Cambiamento Climatico (CIRSEC), Università di Pisa, Italy.
| |
Collapse
|
4
|
Ravaglioli C, De Marchi L, Giannessi J, Pretti C, Bulleri F. Seagrass meadows as ocean acidification refugia for sea urchin larvae. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 906:167465. [PMID: 37778543 DOI: 10.1016/j.scitotenv.2023.167465] [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: 07/03/2023] [Revised: 09/15/2023] [Accepted: 09/28/2023] [Indexed: 10/03/2023]
Abstract
Foundation species have been widely documented to provide suitable habitats for other species by ameliorating stressful environmental conditions. Nonetheless, their role in rescuing stress-sensitive species from adverse conditions due to climate change remains often unexplored. Here, we performed a mesocosm experiment to assess whether the seagrass, Posidonia oceanica, through its photosynthetic activity, could mitigate the negative effects of ocean acidification on larval development and growth of the calcifying sea urchin, Paracentrotus lividus. Sea urchin larvae at early and late developmental stages that are generally associated to benthic habitats, were grown in aquaria with or without P. oceanica plants, under ambient or low pH conditions predicted by the end of the century under the worst climate scenario (RCP8.5). The percentage of abnormal larvae and their total body length under different experimental conditions were assessed on early- (i.e., pluteus; 72 h post-fertilization) and final-developmental stages (i.e., echinopluteus; 30 days post-fertilization), respectively. The presence of P. oceanica increased mean daily pH values of ∼0.1 and ∼0.15 units at ambient and low pH conditions, respectively, compared with tanks without plants. When grown at low pH in association with P. oceanica, plutei showed a ∼23 % reduction of malformations and echinoplutei a ∼34 % increase in total body length, respectively, compared with larvae developing in tanks without plants. Our results suggest that P. oceanica, by increasing pH and altering seawater carbonate chemistry through its metabolic activity, could buffer the negative effects of ocean acidification on calcifying organisms and could, thus, represent a tool against climate-driven loss of biodiversity.
Collapse
Affiliation(s)
- C Ravaglioli
- Dipartimento di Biologia, Università di Pisa, CoNISMa, via Derna 1, 56126 Pisa, Italy.
| | - L De Marchi
- Dipartimento di Scienze Veterinarie, Università of Pisa, Via Livornese (lato monte) - 56122 San Piero a Grado, Pisa, Italy.
| | - J Giannessi
- Dipartimento di Scienze Veterinarie, Università of Pisa, Via Livornese (lato monte) - 56122 San Piero a Grado, Pisa, Italy.
| | - C Pretti
- Dipartimento di Scienze Veterinarie, Università of Pisa, Via Livornese (lato monte) - 56122 San Piero a Grado, Pisa, Italy; Interuniversity Consortium of Marine Biology and Applied Ecology "G. Bacci" (CIBM), Viale N.Sauro 4, 57128 Livorno, Italy.
| | - F Bulleri
- Dipartimento di Biologia, Università di Pisa, CoNISMa, via Derna 1, 56126 Pisa, Italy; Centro interdipartimentale di Ricerca per lo Studio degli Effetti del Cambiamento Climatico (CIRSEC), Università di Pisa, Italy.
| |
Collapse
|
5
|
Rath S, Das S. Oxidative stress-induced DNA damage and DNA repair mechanisms in mangrove bacteria exposed to climatic and heavy metal stressors. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 339:122722. [PMID: 37863253 DOI: 10.1016/j.envpol.2023.122722] [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: 04/03/2023] [Revised: 07/25/2023] [Accepted: 10/08/2023] [Indexed: 10/22/2023]
Abstract
Bacteria thriving in the mangrove ecosystem are major drivers of elemental cycles. Climate change and environmental stressors (heavy metals) influence the performance of these microorganisms, thereby affecting the biogeochemical cycle. The present study reports the genotoxic effect of climatic and heavy metal stressors on mangrove bacteria and their adaptation strategies. Comparative analysis between two bacterial strains, Bacillus stercoris GST-03 and Pseudomonas balearica DST-02 isolated from the Bhitarkanika mangrove ecosystem, Odisha, India, showed cellular injuries in response to various stressors as evident by declined growth, elevated levels of reactive oxygen species (ROS) and resulted DNA damage. B. stercoris GST-03 showed more tolerance towards acidic pH, whereas P. balearica DST-02 showed higher tolerance towards UV exposure and heavy metals (Lead and Cadmium). The adaptation strategies of the strains revealed a significant role of GST in ROS scavenging activity and the involvement of Nucleotide excision repair or SOS response pathways. However, irreparable DNA damage was observed at pH 9 and 200 ppm Cd in B. stercoris GST-03, and at pH 4, 1000 ppm of Pb and 200 ppm of Cd in P. balearica DST-02. The current findings provide a broad overview of bacterial response and adaptability concerning future climate and environmental changes.
Collapse
Affiliation(s)
- Sonalin Rath
- Laboratory of Environmental Microbiology and Ecology (LEnME), Department of Life Science, National Institute of Technology, Rourkela, 769008, Odisha, India
| | - Surajit Das
- Laboratory of Environmental Microbiology and Ecology (LEnME), Department of Life Science, National Institute of Technology, Rourkela, 769008, Odisha, India.
| |
Collapse
|
6
|
James RK, Keyzer LM, van de Velde SJ, Herman PMJ, van Katwijk MM, Bouma TJ. Climate change mitigation by coral reefs and seagrass beds at risk: How global change compromises coastal ecosystem services. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 857:159576. [PMID: 36273559 DOI: 10.1016/j.scitotenv.2022.159576] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 10/14/2022] [Accepted: 10/15/2022] [Indexed: 06/16/2023]
Abstract
Seagrass meadows provide valuable ecosystem services of coastal protection and chemical habitat formation that could help mitigate the impact of sea level rise and ocean acidification. However, the intensification of hydrodynamic forces caused by sea level rise, in addition to habitat degradation threaten the provision of these ecosystem services. With quantitative field measurements of the coastal protection and chemical habitat formation services of seagrass meadows, we statistically model the relationships between hydrodynamic forces, vegetation density and the provision of these ecosystem services. Utilising a high-resolution hydrodynamic model that simulates end of the century hydrodynamic conditions and three scenarios of coral reef degradation (i.e., keep up, remain or loss) we quantify how the environmental conditions within a tropical bay will change given changes to the provision of ecosystem services. Our study shows that increasing hydrodynamic forces lead to a seafloor made up of a larger grain size that is increasingly unstable and more vulnerable to erosion. The loss of a fringing reef leads to larger hydrodynamic forces entering the bay, however, the 0.87 m increase in depth due to sea-level rise reduces the bed shear stress in shallower areas, which limits the change in the ecosystem services provided by the current benthic seagrass meadow. Loss of seagrass constitutes the greatest change in a bay ecosystem, resulting in the sediment surface where seagrass existed becoming unstable and the median sediment grain size increasing by 5-7 %. The loss of seagrass also leads to the disappearance of the unique fluctuating chemical habitat, which leaves the surrounding community vulnerable to ocean acidification. A reduction or complete loss of these ecosystem services would impact the entire community assemblage while also leaving the surrounding coastline vulnerable to erosion, thus exacerbating negative effects brought about by climate change.
Collapse
Affiliation(s)
- R K James
- Department of Estuarine & Delta Systems, NIOZ Royal Netherlands Institute for Sea Research and Utrecht University, Yerseke, the Netherlands; Bgeosys, Department of Geoscience, Environment and Society, Université Libre de Bruxelles, Brussels, Belgium.
| | - L M Keyzer
- Environmental Fluid Mechanics, Civil Engineering and Geosciences, Delft University of Technology, Delft, the Netherlands
| | - S J van de Velde
- Bgeosys, Department of Geoscience, Environment and Society, Université Libre de Bruxelles, Brussels, Belgium; Operational Directorate Natural Environment, Royal Belgian Institute of Natural Sciences, Brussels, Belgium
| | - P M J Herman
- Environmental Fluid Mechanics, Civil Engineering and Geosciences, Delft University of Technology, Delft, the Netherlands; Marine & Coastal Systems, Deltares, Delft, the Netherlands
| | - M M van Katwijk
- Department of Environmental Science, Institute for Water and Wetland Research, Faculty of Science, Radboud University Nijmegen, Nijmegen, the Netherlands
| | - T J Bouma
- Department of Estuarine & Delta Systems, NIOZ Royal Netherlands Institute for Sea Research and Utrecht University, Yerseke, the Netherlands; Faculty of Geosciences, Department of Physical Geography, Utrecht University, Utrecht, the Netherlands
| |
Collapse
|
7
|
Kekuewa SAH, Courtney TA, Cyronak T, Andersson AJ. Seasonal nearshore ocean acidification and deoxygenation in the Southern California Bight. Sci Rep 2022; 12:17969. [PMID: 36289268 PMCID: PMC9606271 DOI: 10.1038/s41598-022-21831-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 10/04/2022] [Indexed: 01/24/2023] Open
Abstract
The California Current System experiences seasonal ocean acidification and hypoxia (OAH) owing to wind-driven upwelling, but little is known about the intensity, frequency, and depth distribution of OAH in the shallow nearshore environment. Here we present observations of OAH and dissolved inorganic carbon and nutrient parameters based on monthly transects from March 2017 to September 2018 extending from the surf zone to the ~ 40 m depth contour in La Jolla, California. Biologically concerning OAH conditions were observed at depths as shallow as 10 m and as close as 700 m to the shoreline. Below 20 m depth, 8% of observations were undersaturated with respect to aragonite, 28% of observations had a pHT less than 7.85, and 19% of observations were below the sublethal oxygen threshold of 157 µmol kg-1. These observations raise important questions about the impacts of OAH on coastal organisms and ecosystems and how future intensified upwelling may exacerbate these conditions.
Collapse
Affiliation(s)
- Samuel A. H. Kekuewa
- grid.266100.30000 0001 2107 4242Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA USA
| | - Travis A. Courtney
- grid.267044.30000 0004 0398 9176Department of Marine Sciences, University of Puerto Rico Mayagüez, Mayagüez, PR USA
| | - Tyler Cyronak
- grid.261241.20000 0001 2168 8324Department of Marine and Environmental Sciences, Halmos College of Natural Sciences and Oceanography, Nova Southeastern University, Dania Beach, FL USA
| | - Andreas J. Andersson
- grid.266100.30000 0001 2107 4242Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA USA
| |
Collapse
|
8
|
Leung JYS, Zhang S, Connell SD. Is Ocean Acidification Really a Threat to Marine Calcifiers? A Systematic Review and Meta-Analysis of 980+ Studies Spanning Two Decades. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2107407. [PMID: 35934837 DOI: 10.1002/smll.202107407] [Citation(s) in RCA: 44] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 06/24/2022] [Indexed: 06/15/2023]
Abstract
Ocean acidification is considered detrimental to marine calcifiers, but mounting contradictory evidence suggests a need to revisit this concept. This systematic review and meta-analysis aim to critically re-evaluate the prevailing paradigm of negative effects of ocean acidification on calcifiers. Based on 5153 observations from 985 studies, many calcifiers (e.g., echinoderms, crustaceans, and cephalopods) are found to be tolerant to near-future ocean acidification (pH ≈ 7.8 by the year 2100), but coccolithophores, calcifying algae, and corals appear to be sensitive. Calcifiers are generally more sensitive at the larval stage than adult stage. Over 70% of the observations in growth and calcification are non-negative, implying the acclimation capacity of many calcifiers to ocean acidification. This capacity can be mediated by phenotypic plasticity (e.g., physiological, mineralogical, structural, and molecular adjustments), transgenerational plasticity, increased food availability, or species interactions. The results suggest that the impacts of ocean acidification on calcifiers are less deleterious than initially thought as their adaptability has been underestimated. Therefore, in the forthcoming era of ocean acidification research, it is advocated that studying how marine organisms persist is as important as studying how they perish, and that future hypotheses and experimental designs are not constrained within the paradigm of negative effects.
Collapse
Affiliation(s)
- Jonathan Y S Leung
- Faculty of Materials and Energy, Southwest University, Chongqing, 400715, P. R. China
- Southern Seas Ecology Laboratories, School of Biological Sciences, The University of Adelaide, Adelaide, South Australia, 5005, Australia
| | - Sam Zhang
- Faculty of Materials and Energy, Southwest University, Chongqing, 400715, P. R. China
| | - Sean D Connell
- Southern Seas Ecology Laboratories, School of Biological Sciences, The University of Adelaide, Adelaide, South Australia, 5005, Australia
| |
Collapse
|
9
|
Noisette F, Pansch C, Wall M, Wahl M, Hurd CL. Role of hydrodynamics in shaping chemical habitats and modulating the responses of coastal benthic systems to ocean global change. GLOBAL CHANGE BIOLOGY 2022; 28:3812-3829. [PMID: 35298052 DOI: 10.1111/gcb.16165] [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: 11/27/2021] [Accepted: 01/23/2022] [Indexed: 06/14/2023]
Abstract
Marine coastal zones are highly productive, and dominated by engineer species (e.g. macrophytes, molluscs, corals) that modify the chemistry of their surrounding seawater via their metabolism, causing substantial fluctuations in oxygen, dissolved inorganic carbon, pH, and nutrients. The magnitude of these biologically driven chemical fluctuations is regulated by hydrodynamics, can exceed values predicted for the future open ocean, and creates chemical patchiness in subtidal areas at various spatial (µm to meters) and temporal (minutes to months) scales. Although the role of hydrodynamics is well explored for planktonic communities, its influence as a crucial driver of benthic organism and community functioning is poorly addressed, particularly in the context of ocean global change. Hydrodynamics can directly modulate organismal physiological activity or indirectly influence an organism's performance by modifying its habitat. This review addresses recent developments in (i) the influence of hydrodynamics on the biological activity of engineer species, (ii) the description of chemical habitats resulting from the interaction between hydrodynamics and biological activity, (iii) the role of these chemical habitat as refugia against ocean acidification and deoxygenation, and (iv) how species living in such chemical habitats may respond to ocean global change. Recommendations are provided to integrate the effect of hydrodynamics and environmental fluctuations in future research, to better predict the responses of coastal benthic ecosystems to ongoing ocean global change.
Collapse
Affiliation(s)
- Fanny Noisette
- Institut des Sciences de la Mer, Université du Québec à Rimouski, Rimouski, Quebec, Canada
- Department of Marine Ecology, GEOMAR Helmholtz Centre for Ocean Research, Kiel, Germany
- Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania, Australia
| | - Christian Pansch
- Department of Marine Ecology, GEOMAR Helmholtz Centre for Ocean Research, Kiel, Germany
- Department of Environmental and Marine Biology, Åbo Akademi University, Åbo, Finland
| | - Marlene Wall
- Department of Marine Ecology, GEOMAR Helmholtz Centre for Ocean Research, Kiel, Germany
- Bentho-Pelagic Processes, Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany
| | - Martin Wahl
- Department of Marine Ecology, GEOMAR Helmholtz Centre for Ocean Research, Kiel, Germany
| | - Catriona L Hurd
- Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania, Australia
| |
Collapse
|
10
|
Leung JYS, Nagelkerken I, Pistevos JCA, Xie Z, Zhang S, Connell SD. Shark teeth can resist ocean acidification. GLOBAL CHANGE BIOLOGY 2022; 28:2286-2295. [PMID: 35023266 DOI: 10.1111/gcb.16052] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 10/12/2021] [Accepted: 10/12/2021] [Indexed: 06/14/2023]
Abstract
Ocean acidification can cause dissolution of calcium carbonate minerals in biological structures of many marine organisms, which can be exacerbated by warming. However, it is still unclear whether this also affects organisms that have body parts made of calcium phosphate minerals (e.g. shark teeth), which may also be impacted by the 'corrosive' effect of acidified seawater. Thus, we examined the effect of ocean acidification and warming on the mechanical properties of shark teeth (Port Jackson shark, Heterodontus portusjacksoni), and assessed whether their mineralogical properties can be modified in response to predicted near-future seawater pH (-0.3 units) and temperature (+3°C) changes. We found that warming resulted in the production of more brittle teeth (higher elastic modulus and lower mechanical resilience) that were more vulnerable to physical damage. Yet, when combined with ocean acidification, the durability of teeth increased (i.e. less prone to physical damage due to the production of more elastic teeth) so that they did not differ from those raised under ambient conditions. The teeth were chiefly made of fluorapatite (Ca5 (PO4 )3 F), with increased fluoride content under ocean acidification that was associated with increased crystallinity. The increased precipitation of this highly insoluble mineral under ocean acidification suggests that the sharks could modulate and enhance biomineralization to produce teeth which are more resistant to corrosion. This adaptive mineralogical adjustment could allow some shark species to maintain durability and functionality of their teeth, which underpins a fundamental component of predation and sustenance of the trophic dynamics of future oceans.
Collapse
Affiliation(s)
- Jonathan Y S Leung
- Centre for Advanced Thin Films and Devices, School of Materials and Energy, Southwest University, Chongqing, PR China
- Southern Seas Ecology Laboratories, School of Biological Sciences, The University of Adelaide, South Australia, Australia
| | - Ivan Nagelkerken
- Southern Seas Ecology Laboratories, School of Biological Sciences, The University of Adelaide, South Australia, Australia
| | - Jennifer C A Pistevos
- Southern Seas Ecology Laboratories, School of Biological Sciences, The University of Adelaide, South Australia, Australia
- PSL Research University EPHE-UPVD-CNRS, USR 3278 CRIOBE, Moorea, French Polynesia
| | - Zonghan Xie
- School of Mechanical Engineering, The University of Adelaide, South Australia, Australia
| | - Sam Zhang
- Centre for Advanced Thin Films and Devices, School of Materials and Energy, Southwest University, Chongqing, PR China
| | - Sean D Connell
- Southern Seas Ecology Laboratories, School of Biological Sciences, The University of Adelaide, South Australia, Australia
| |
Collapse
|
11
|
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.
Collapse
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
| |
Collapse
|
12
|
Dugeny E, de Lorgeril J, Petton B, Toulza E, Gueguen Y, Pernet F. Seaweeds influence oyster microbiota and disease susceptibility. J Anim Ecol 2022; 91:805-818. [PMID: 35137405 DOI: 10.1111/1365-2656.13662] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 01/03/2022] [Indexed: 11/29/2022]
Abstract
A growing awareness of role that microbiota can play in mediating the effects of pathogens on hosts has given rise to the concept of the pathobiome. Recently, we demonstrated that the Pacific oyster mortality syndrome affecting Crassostrea gigas oysters is caused by infection with the Ostreid herpesvirus type 1 (OsHV-1) followed by infection with multiple bacterial taxa. Here we extend the concept of this pathobiome beyond the host species and its bacterial microbiota by investigating how seaweed living in association with oysters influences their response to the disease. We hypothesized that by their mere presence in the environment, different species of seaweeds can positively or negatively influence the risk of disease in oysters by shaping their bacterial microbiota and their immune response. Although seaweed and oysters do not have direct ecological interactions, they are connected by seawater and likely share microbes. To test our hypothesis, oysters were acclimated with green, brown or red algae for 2 weeks and then challenged with OsHV-1. We monitored host survival and pathogen proliferation and performed bacterial microbiota and transcriptome analyses. We found that seaweeds can alter the bacterial microbiota of the host and its response to the disease. More particularly, green algae belonging to the genus Ulva spp. induced bacterial microbiota dysbiosis in oyster and modification of its transcriptional immune response leading to increased susceptibility to the disease. This work provides a better understanding of a marine disease and highlights the importance of considering both macrobiotic and microbiotic interactions for conservation, management and exploitation of marine ecosystems and resources.
Collapse
Affiliation(s)
- Elyne Dugeny
- Université de Brest, Ifremer, CNRS, IRD, LEMAR, Plouzané, France
| | - Julien de Lorgeril
- IHPE, Université de Montpellier, CNRS, Ifremer, Université de Perpignan Via Domitia, Montpellier, France
| | - Bruno Petton
- Université de Brest, Ifremer, CNRS, IRD, LEMAR, Plouzané, France
| | - Eve Toulza
- IHPE, Université de Montpellier, CNRS, Ifremer, Université de Perpignan Via Domitia, Montpellier, France
| | - Yannick Gueguen
- IHPE, Université de Montpellier, CNRS, Ifremer, Université de Perpignan Via Domitia, Montpellier, France
| | - Fabrice Pernet
- Université de Brest, Ifremer, CNRS, IRD, LEMAR, Plouzané, France
| |
Collapse
|