Article
Engineering, Marine
Munawar Khalil, Steve S. Doo, Marleen Stuhr, Hildegard Westphal
Summary: Ocean acidification and ocean warming affect the mineralogy and microstructure of starfish skeleton, with temperature being the major factor for magnesium content and pCO(2) having a more significant impact on skeletal microstructures.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Environmental Sciences
Xu Wang, Ping Li, Xuqian Cao, Bin Liu, Shuwen He, Zhihan Cao, Shaoying Xing, Ling Liu, Zhi-Hua Li
Summary: This study investigates the combined effects of tralopyril and ocean acidification on marine organisms and ecosystems. The results show that the combined toxicity is between that of acidification and tralopyril alone. Exposure activates stress responses, affects energy metabolism and biomineralization, and has an impact on marine carbon cycling.
ENVIRONMENTAL POLLUTION
(2022)
Article
Environmental Sciences
Raymond Czaja Jr, Robert Holmberg, Emmanuelle Pales Espinosa, Daniel Hennen, Robert Cerrato, Kamazima Lwiza, Jennifer O'Dwyer, Brian Beal, Kassandra Root, Hannah Zuklie, Bassem Allam
Summary: This study examines the impacts of ocean warming and acidification on larval Atlantic surfclams. Results show that ocean warming increases feeding, growth and biomineralization, but decreases swimming speed and pelagic larval duration. Ocean acidification increases respiration but reduces immune performance and biomineralization. Additionally, changes in energy allocation and profiles of responses are observed under climate change.
MARINE POLLUTION BULLETIN
(2023)
Article
Marine & Freshwater Biology
Timothy P. Curtin, Nils Volkenborn, Ian P. Dwyer, Robert C. Aller, Qingzhi Zhu, Christopher J. Gobler
Summary: Acidic conditions in muddy sediments can hinder the growth and survival of juvenile bivalves, but adding carbonate shell debris can buffer the pH and improve habitat suitability. Lab and field experiments demonstrate that shell amendments significantly increase porewater pH and aragonite saturation state, promoting growth, survival, and burrowing behavior of clams. The addition of shell also benefits other calcifying benthos.
ESTUARINE COASTAL AND SHELF SCIENCE
(2022)
Article
Multidisciplinary Sciences
Yurika Ujiie, Yoshiyuki Ishitani, Yukiko Nagai, Yoshihiro Takaki, Takashi Toyofuku, Shun'ichi Ishii
Summary: In this study, the researchers identified genes involved in calcium ion transport/secretion and α-carbonic anhydrases that control calcification in foraminifera. These genes actively take up calcium ions to support mitochondrial ATP synthesis during calcification and transport excess intracellular calcium ions to prevent cell death. Unique α-carbonic anhydrase genes produce bicarbonate and protons from multiple CO2 sources. These control mechanisms have evolved independently since the Precambrian era, enabling foraminifera to develop large cells and calcify despite decreasing calcium ion concentrations and pH in seawater. These findings provide new insights into calcification mechanisms and their role in adapting to ocean acidification.
Article
Biodiversity Conservation
Junyuan Li, Tong Zhou, Yang Li, Kuidong Xu
Summary: This study analyzed the mitochondrial genome and transcriptome of deep-sea solitary coral Polymyces wellsi living in the oxygen minimum zone (OMZ) and showed the genetic mechanisms underlying its adaptation to low pH, low oxygen content, and extreme food limitation. The findings revealed positive selection and expansion of genes related to biomineralization, mitochondrial components, and ciliary motion, indicating their significance in facilitating the coral's adaptation to the stressors in the OMZ. Moreover, the study identified a novel bio-indicator, the increased isoelectric points of skeleton organic matrix proteins, which may reflect the adaptive capacity of the coral to external acidified seawater. Overall, this study provides insights into the adaptive mechanisms of deep-sea solitary corals and offers strategies for addressing global climate change.
ECOLOGICAL INDICATORS
(2023)
Review
Engineering, Marine
Emanuele Somma, Antonio Terlizzi, Maria Costantini, Madalena Madeira, Valerio Zupo
Summary: The successions of benthic communities are influenced by the first colonizers, such as bacteria, diatoms, and invertebrate larvae. The process is dynamic and can be affected by global warming and ocean acidification. However, the impact of these global stressors on benthic ecosystems is still poorly understood.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Environmental Sciences
J. I. Bertucci, J. Bellas
Summary: This study aimed to estimate the potential risk of the combined effect of global change factors and microplastic pollution on the growth and development of the sea urchin P. lividus. The results showed that exposure to decreased pH and microplastic caused a significant decrease in larval growth, while an increase in water temperature added additional stress, resulting in lower growth and altered development of the sea urchin larvae. The combined stress of ocean warming, acidification, and microplastic pollution may threaten sea urchin populations and have a potential impact on coastal ecosystems.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Fahim Ullah Khan, Yueyong Shang, Xueqing Chang, Hui Kong, Amina Zuberi, James K. H. Fang, Wei Liu, Jinxia Peng, Xingzhi Zhang, Menghong Hu, Youji Wang
Summary: The study reveals that ocean acidification, hypoxia, and warming in marine environments can affect the gut microbiota structure and diversity of mussels, leading to a shift towards pathogen-dominated microbial communities.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Multidisciplinary Sciences
Tye L. Kindinger, Jason A. Toy, Kristy J. Kroeker
Summary: Understanding how ocean acidification and warming affect consumption rates of predators and herbivores in marine ecosystems is crucial for predicting responses to global change. Studies show that both OA and warming can directly impact consumers, but there is high variability in consumption rates, likely due to species adaptation and methodological differences. Exposure to OA may reduce consumption rates on average, but rates can increase when both consumers and their resources are exposed to the same conditions concurrently.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Biodiversity Conservation
Blanca Figuerola, Huw J. Griffiths, Malgorzata Krzeminska, Anna Piwoni-Piorewicz, Anna Iglikowska, Piotr Kuklinski
Summary: The Southern Ocean is responding rapidly to human-induced global change, and serves as a valuable indicator for the impact of ocean warming and acidification on marine species and ecosystems. The authors provide the largest carbonate mineralogical dataset for Southern Ocean bryozoans, highlighting their potential as effective monitors for studying the effects of ocean warming and acidification. They find that bryozoan mineralogy changes significantly with decreasing latitudes and increasing seawater temperature, suggesting that seawater temperature may be a significant driver of global variations in bryozoan mineralogy.
Article
Plant Sciences
Ellie Bergstrom, Jelle Lahnstein, Helen Collins, Tessa M. Page, Vincent Bulone, Guillermo Diaz-Pulido
Summary: Crustose coralline algae (CCA) are important benthic substrate consolidators on coral reefs. This study investigated the effects of ocean acidification and warming on the organic matrix composition of CCA and found that different species exhibit variability in their response to environmental change.
JOURNAL OF PHYCOLOGY
(2023)
Article
Fisheries
Damon Britton, Craig N. Mundy, Fanny Noisette, Christina M. McGraw, Catriona L. Hurd, Joanna Norkko
Summary: Research shows that crustose coralline algae (CCA) respond negatively to low and medium emissions scenarios of warming and acidification, and may be adversely affected by 2030 if current emissions persist. Significant declines in growth rates and increases in bleaching were observed in the high emission scenario. These findings underscore the urgent need to take action to protect CCA and the valuable ecosystem services they provide.
ICES JOURNAL OF MARINE SCIENCE
(2021)
Review
Fisheries
Fangfang Yang, Zhangliang Wei, Lijuan Long
Summary: Calcification by calcified marine macroalgae is crucial for algal growth and coral reef formation, but is vulnerable to changes in global climate. Studies on the mechanisms of macroalgal calcification are limited, but new approaches such as genomics offer avenues for new understandings.
MARINE AND FRESHWATER RESEARCH
(2021)
Article
Environmental Sciences
Raymond Czaja Jr, Emmanuelle Pales-Espinosa, Robert M. Cerrato, Kamazima Lwiza, Bassem Allam
Summary: Low pH conditions associated with ocean acidification pose threats to commercially and ecologically important organisms like bivalves. This study investigates factors that explain differences in biological responses to low pH in laboratory experiments, such as upwelling exposure and experimental design. The results show that upwelling exposure and experimental design significantly impact bivalve metabolic responses to low pH, with bivalves from strong upwelling areas showing less sensitivity.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Geochemistry & Geophysics
Lukas Froehlich, Valentin Siebert, Eric O. Walliser, Julien Thebault, Klaus Peter Jochum, Laurent Chauvaud, Bernd R. Schoene
Summary: This study analyzed the relationship between Ba/Ca-shell ratios and specific phytoplankton species and evaluated the applicability of Ba/Ca-shell ratios as a species-specific proxy for phytoplankton dynamics. The results showed that Ba/Ca-shell profiles were not explained by chlorophyll a concentration or total diatom and dinoflagellate abundance, but by specific phytoplankton time-series with a time lag of 8 to 13 days. Monte Carlo simulations suggested that Ba/Ca-shell peak heights were determined by individually weighted phytoplankton time-series, likely due to inter-species differences in cell size and chemical ability to adsorb Ba. Ba/Ca-shell peaks appeared to be associated with blooms of specific phytoplankton taxa, indicating the potential of Ba/Ca-shell ratios as a species-specific proxy for past phytoplankton dynamics.
Article
Geography, Physical
Max Torbenson, Lara Klippel, Claudia Hartl, Frederick Reinig, Kerstin Treydte, Ulf Buentgen, Miroslav Trnka, Bernd Schoene, Lea Schneider, Jan Esper
Summary: This study investigates the age-related trends in stable carbon and oxygen isotopes in tree rings. The results show that delta C-13 values increase with tree age, while delta O-18 values have minor changes related to age. This study provides evidence for the use of stable delta O-18 isotopic ratios for climate reconstructions, but caution is advised when combining information from diverse tree-ring parameters, species, and regions in multi-proxy climate reconstructions.
QUATERNARY INTERNATIONAL
(2022)
Article
Multidisciplinary Sciences
Stefania Milano, Bernd R. Schone, Manuel R. Gonzalez-Morales, Igor Gutierrez-Zugasti
Summary: This study analyzes stable isotopes in shells to examine hunter-gatherer subsistence strategies in terms of seasonality and collection areas. The results demonstrate a diversification trend in shellfish harvesting that coincides with changes in the surrounding environment.
SCIENTIFIC REPORTS
(2022)
Article
Geochemistry & Geophysics
Cornelia Brosset, Nils Hoche, Kotaro Shirai, Kozue Nishida, Regina Mertz-Kraus, Bernd R. Schone
Summary: Bivalve shells are powerful tools for studying past climate, but it is challenging to extract temperature signals from shell Sr/Ca. This study explores the relationship between Sr/Ca and microstructure/growth rate in Arctica islandica shells. The results show that even after removing these biases, Sr/Ca remains positively correlated with water temperature, contradicting expectations. Other environmental factors overwrite any potential temperature signal recorded by shell Sr/Ca.
Article
Environmental Sciences
Bernd R. Schoene, Xizhi Huang, Anne Jantschke, Regina Mertz-Kraus, Michael L. Zettler
Summary: This study found that the shells of the bivalve mollusk, Arctica islandica, can be used as proxies for measuring dissolved oxygen levels in water. The study also evaluated the potential use of two other bivalves, Astarte elliptica and Astarte borealis, as alternative and interchangeable proxies for dissolved oxygen. The results showed that all three species had statistically significant and inverse correlations with dissolved oxygen concentrations. Astarte elliptica may provide slightly more precise dissolved oxygen data, but has a shorter lifespan. Both Astarte species showed stronger correlations with dissolved oxygen compared to Arctica islandica.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Geosciences, Multidisciplinary
Bernd R. Schoene, Soraya Marali, Regina Mertz-Kraus, Paul G. Butler, Alan D. Wanamaker, Lukas Froehlich
Summary: Bivalve shells can serve as archives for past climates and ecosystems, but errors in data processing can introduce significant bias. Using weighted rather than arithmetic moving averages, along with considering variations in seasonal shell growth rate, can reduce errors in paleoenvironmental reconstructions. Weighting can help reduce bias to almost zero, with the potential for significant error reduction in annual means.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Biodiversity Conservation
Lukas Froehlich, Valentin Siebert, Qian Huang, Julien Thebault, Klaus Peter Jochum, Bernd R. Schoene
Summary: This study examined the relationship between the timing and magnitude of Ba/Ca-shell, Mo/Ca-shell and Li/Ca-shell peaks of P. maximus and the occurrence of various phytoplankton species from a statistical perspective. The simulation results indicated potential patterns between phytoplankton and trace element time-series, highlighting the potential of using these geochemical proxies as proxies of past phytoplankton dynamics.
ECOLOGICAL INDICATORS
(2022)
Article
Environmental Sciences
Daria Ezgeta-Balic, Melita Peharda, Bernd R. Schone, Hana Uvanovic, Nedo Vrgo, Kresimir Markulin, Ivana Radonic, Clea Denamiel, Zarko Kovac
Summary: This study used a multi-species approach to analyze the reproductive and growth strategies of three commercially important scallop species, and found diverse strategies employed by these species exposed to the same environmental conditions.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Geochemistry & Geophysics
Qian Huang, Hao Wu, Bernd R. Schoene
Summary: Compound-specific stable nitrogen isotope (delta 15N) analysis is a powerful tool for studying trophic dynamics and nitrogen biogeochemistry. This study presents a refined analytical technique and compares different sample pretreatment methods, providing high-resolution data for reconstructing changes in the origin and fate of nitrogen in aquatic food webs.
Article
Geochemistry & Geophysics
Bernd R. Schoene, Soraya Marali, Anne Jantschke, Regina Mertz-Kraus, Paul G. Butler, Lukas Froehlich
Summary: Ion impurities can serve as proxies for environmental conditions in biogenic and geogenic materials. However, the interpretation of element/Ca ratios in bivalve shells is challenging due to vital effects, nonclassical nucleation and growth mechanisms, and concentration differences compared to inorganic CaCO3 precipitated from seawater. In this study, element/Ca chronologies of modern Arctica islandica shells from different locations in the North Atlantic were found to be reproducible, suggesting environmental control over element incorporation. However, the agreement between shell element/Ca ratios and environmental quantities was weaker than that between specimens, indicating other extrinsic factors at work.
Article
Archaeology
Natasha Leclerc, Sarah Kuehn, Terence Clark, Meghan Burchell, Gary Coupland, Bernd R. Schoene
Summary: This study investigates approximately 1000 years of shellfish harvesting by the shishalh Nation in the Sechelt inlet system (SIS) on the inner Sunshine Coast of British Columbia. The results reveal a pattern of year-round shellfish collection, with an emphasis on spring collection at village sites and a high intensity of shellfish harvesting in the region. The analysis of archaeological shells also suggests a larger range of sea surface temperature amplitude compared to modern shells.
ENVIRONMENTAL ARCHAEOLOGY
(2023)
Article
Fisheries
Christoph J. Gey, Frankie Thielen, Laurent Pfister, Christophe Hissler, Guilhem Tuerk, Sven Baier, Bernd R. Schoene
Summary: This study investigates whether the nacre tablet thickness (NTT) of freshwater pearl mussel shells can serve as a proxy for stream water temperature. The results show that there is no consistent relationship between NTT and water temperature. Fluctuations in stream water pH may have caused physiological stress and hindered shell growth.
MARINE AND FRESHWATER RESEARCH
(2023)
Article
Environmental Sciences
Xizhi Huang, Liqiang Zhao, Michael L. Zettler, Regina Mertz-Kraus, Klaus Peter Jochum, Bernd R. Schoene
Summary: The Baltic Sea is an excellent region for studying oxygen depletion processes. Reconstructing past low-oxygen occurrences is crucial to understanding current ecological disturbances and developing mitigation strategies. A high-resolution dissolved oxygen record since the mid-19th century was reconstructed from Manganese/Shell values of Arctica islandica collected in the Mecklenburg Bight, showing similar low oxygenation events in the late 19th century and late 20th century, but with increased variability. The study highlights the importance of conducting more high-resolution retrospective studies to improve the management and protection of ecosystems in the Baltic Sea.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Geosciences, Multidisciplinary
Valentin Siebert, Brivaela Moriceau, Lukas Froehlich, Bernd R. Schoene, Erwan Amice, Beatriz Beker, Kevin Bihannic, Isabelle Bihannic, Gaspard Delebecq, Jeremy Devesa, Morgane Gallinari, Yoan Germain, Emilie Grossteffan, Klaus Peter Jochum, Thierry Le Bec, Manon Le Goff, Celine Liorzou, Aude Leynaert, Claudie Marec, Marc Picheral, Peggy Rimmelin-Maury, Marie-Laure Rouget, Matthieu Waeles, Julien Thebault
Summary: As part of the HIPPO project, environmental monitoring was conducted in the Bay of Brest from March to October 2021 to investigate the incorporation of chemical elements into scallop shells and their relationship with phytoplankton dynamics. Biological and water samples were collected to analyze various environmental parameters. The dataset, available at https://doi.org/10.17882/92043 (Siebert et al., 2023), provides valuable information for sclerochronological investigations, biogeochemical cycle studies, and ecological research projects.
EARTH SYSTEM SCIENCE DATA
(2023)
Article
Ecology
Niels J. J. de Winter, Daniel Killam, Lukas Froehlich, Lennart de Nooijer, Wim Boer, Bernd R. Schoene, Julien Thebault, Gert-Jan Reichart
Summary: The chemical composition of mollusk shells captures environmental variability and can be used to study climatology. With improved sampling resolution, trace element and stable isotope analysis now allow determination of shell composition at daily to sub-daily intervals. In this study, hourly resolved profiles of Mg / Ca, Mn / Ca, Sr / Ca, and Ba / Ca were measured in the shells of different mollusk species. The results showed weak but statistically significant daily and tidal rhythms in the trace element composition, suggesting an inherent biological rhythmic process affects element incorporation. The remaining short-term variability in shell chemistry highlights the dominance of aperiodic processes in mollusk physiology and/or environmental conditions.
Article
Ecology
Katja J. Geiger, Julio Arrontes, Antonella Rivera, Consolacion Fernandez, Jorge Alvarez, Jose Luis Acuna
Summary: A two-year experiment was conducted to investigate the impact of Pollicipes pollicipes harvest on intertidal community structure and ecological diversity. The study found that intensive exploitation resulted in a decrease in P. pollicipes and Mytilus spp. coverage, while Chthamalus spp. and Corallina spp. increased. The recovery of P. pollicipes aggregations was slow and variable, but their coverage increased under non-extracted conditions.
JOURNAL OF EXPERIMENTAL MARINE BIOLOGY AND ECOLOGY
(2024)
Article
Ecology
Daniel Castro Martignago, Leandro Godoy, Amanda Pereira Amaral, Guendalina Turcato Oliveira
Summary: This study evaluates the effects of bleaching on the oocytes of the Mussismilia harttii coral and investigates the strategies employed by these cells to maintain antioxidant balance and cellular homeostasis. The research finds that bleached coral oocytes experience lipid damage, but are still able to maintain their quality and potentially elongate their lifespan and fertilization capability. This response may be linked to an intensification of heterotrophy in bleached corals.
JOURNAL OF EXPERIMENTAL MARINE BIOLOGY AND ECOLOGY
(2024)