Article
Limnology
Hanna C. C. Mantanona, Thomas M. M. DeCarlo
Summary: Mass bleaching events lead to reduction in coral populations and calcium carbonate production, which weakens the ability of reefs to counter rising sea levels. This study used Raman spectrometry techniques to examine the biogeochemical response of long-lived corals before, during, and after bleaching. The findings indicate that the calcification process of coral-bleaching survivors is unexpectedly resilient.
LIMNOLOGY AND OCEANOGRAPHY LETTERS
(2023)
Article
Environmental Sciences
Kristina K. Beck, Jan Nierste, Gertraud M. Schmidt-Grieb, Esther Luedtke, Christoph Naab, Christoph Held, Gernot Nehrke, Grit Steinhoefel, Juergen Laudien, Claudio Richter, Marlene Wall
Summary: Cold-water corals (CWCs) are vulnerable to environmental changes, and the effects of these changes on different life stages of CWCs are still unknown. An aquarium experiment was conducted to study the physiological response of Caryophyllia huinayensis to the interactive effects of aragonite saturation, temperature, and food availability. The results showed that the response differed between life stages and measured traits, with elevated temperature and reduced feeding having the greatest effects. Juveniles showed decreased calcification rates, while adult corals had the highest mortality. The study suggests that elevated summer temperatures and reduced food supply will have a significant impact on live CWCs in the future.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Ecology
Ryan J. Anderson, Ellen Hines, Piero L. F. Mazzini, Meredith Elliott, John L. Largier, Jaime Jahncke
Summary: Ocean acidification in the California Shelf is influenced by coastal upwelling driven by along-shore winds. This study examines the relationship between aragonite saturation state and upwelling-favorable winds based on proxy values derived from hydrographic surveys. The findings suggest that increasing upwelling-favorable winds due to global warming could negatively impact calcifying organisms like pteropods.
REGIONAL STUDIES IN MARINE SCIENCE
(2022)
Article
Environmental Sciences
Si-qing Yu, Tian-qi Xiong, Wei-dong Zhai
Summary: This study investigates the seasonal acidification in the South Yellow Sea (SYS) and finds that the acidification status of the cold water mass in summer and autumn is almost free from the potential impacts of weak water mixing and internal circulation. The Yellow Sea Warm Current only carries oceanic DIC into the SYS in winter and early spring.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Environmental Sciences
Silvia Amaya-Vias, Susana Flecha, Fiz F. Perez, Gabriel Navarro, Jesus Garcia-Lafuente, Ahmed Makaoui, I. Emma Huertas
Summary: The study examines the temporal trends of seawater pH and saturation state of calcium carbonate minerals in different water masses in the Atlantic and Mediterranean oceans. The findings show a gradual reduction in pH and saturation state, indicating increasingly unfavorable conditions for calcifying organisms. Future projections suggest critical conditions for calcium carbonate minerals will be reached by the end of the century, with a corrosive environment expected after 2100.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Environmental Sciences
S. E. Cryer, C. Schlosser, N. Allison
Summary: The decrease in ocean pH and the presence of dissolved copper have negative impacts on the calcification, photosynthesis, and respiration of the tropical Stylophora pistillata coral. The effects are amplified when both stressors are combined.
MARINE ENVIRONMENTAL RESEARCH
(2022)
Article
Environmental Sciences
Zhe Zhang, Yu-Bin Hu
Summary: Ocean acidification is a major challenge for marine aquaculture. Seasonal variations in seawater pH and aragonite saturation (narag) were studied in Muping Marine Ranch, Yantai. The results showed distinct seasonal variations in pH and narag. Temperature influenced pH and narag in opposite ways, with pH being primarily controlled by temperature. Air-sea exchange had a synergistic effect on pH and narag, but had less impact on their seasonal variations. Biological activities affected seasonal variations in surface seawater pH and narag, with temperature playing a dominant role.
MARINE POLLUTION BULLETIN
(2023)
Article
Multidisciplinary Sciences
Xingyuan San, Mingyu Gong, Jian Wang, Xiuliang Ma, Roberto dos Reis, Paul J. M. Smeets, Vinayak P. Dravid, Xiaobing Hu
Summary: Using various transmission electron microscopy techniques, researchers have revealed the atomic structures of twins, partial dislocations, and associated stacking faults in aragonite. They have also discovered a previously unreported energy dissipation mode within aragonite, involving the formation of nanograins via the pile-up of partial dislocations. Comparisons between biogenic and abiotic aragonite reveal similar crystallographic features of twins, but lower twin density in abiotic aragonite. These findings enrich our knowledge of plastic deformation in aragonite and provide insights for designing bioengineering materials with better strength and toughness.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Environmental Sciences
Sun Heng, Gao Zhong-Yong, Zhao De-Rong, Sun Xiu-Wu, Chen Li-Qi
Summary: In the Bering Sea, surface waters are oversaturated with aragonite due to high biological removal, while subsurface waters show generally low saturation states and even strong undersaturation, likely caused by remineralization. Despite being relatively low, aragonite saturation states in the shallow nearshore regions of the Bering Sea remain above the saturation horizon throughout the water column, possibly due to high local primary production. Ocean acidification in the Bering Sea is influenced not only by natural processes, but also by the accumulation of anthropogenic CO2, a result of climate change.
ADVANCES IN CLIMATE CHANGE RESEARCH
(2021)
Review
Oceanography
Katarzyna Koziorowska-Makuch, Beata Szymczycha, Helmuth Thomas, Karol Kulinski
Summary: This study investigated the spatial variability in hydrography and carbonate chemistry in four Spitsbergen fjords during the high meltwater season. The results showed that the differences in hydrology led to spatial changes in the CO2 system structure. The freshwater input had a diluting effect and lowered the alkalinity in the surface waters of the fjords. The study also highlighted the importance of recognizing the variability in alkalinity and freshwater end-members in predicting marine CO2 system changes.
PROGRESS IN OCEANOGRAPHY
(2023)
Article
Environmental Sciences
Dolores Jimenez-Lopez, Teodora Ortega, Ana Sierra, Rocio Ponce, Abelardo Gomez-Parra, Jesus Forja
Summary: The study of the spatiotemporal variability of aragonite saturation state in the eastern shelf of the Gulf of Cadiz revealed oversaturation of calcium carbonate in the surface and deep waters. Biological activity in the surface mixed layer was found to be the main factor influencing the Omega Ar variability. Different water masses in the deep waters showed conservative behaviors related to TA and Ca2+ concentration.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Geosciences, Multidisciplinary
Robert N. Ulrich, Maxence Guillermic, Julia Campbell, Abbas Hakim, Rachel Han, Shayleen Singh, Justin D. Stewart, Cristian Roman-Palacios, Hannah M. Carroll, Ilian De Corte, Rosaleen E. Gilmore, Whitney Doss, Aradhna Tripati, Justin B. Ries, Robert A. Eagle
Summary: Elemental ratios in biogenic marine calcium carbonates reflect a combination of seawater ion abundance, physical properties of seawater, biomineral mineralogy, and biomineralization pathways. The study explores various controls over elemental partitioning, including species-level and biomineralization-pathway-level controls, as well as the influence of pH regulation and seawater carbonate chemistry changes. Phylogenetic patterns also play a significant role in determining elemental partitioning, with phylogeny explaining the elemental ratio data better than mineralogy in most cases. This suggests that mechanistic controls over element incorporation are rooted in the evolution of biomineralization mechanisms.
FRONTIERS IN EARTH SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Cheng-long Li, Wei-dong Zhai
Summary: In this study, mechanism-based models were developed to establish relationships between summertime and autumnal subsurface Omega(arag) in the North Yellow Sea and seawater temperature, practical salinity, dissolved oxygen, and atmospheric CO2 concentration. The reconstructed subsurface Omega(arag) values from the models were in good agreement with values calculated from observed hydrochemical data, indicating potential applicability in similar coastal systems. This successful attempt provides insights into the threat posed to marine calcifying organisms in the area and the importance of understanding the impacts of environmental factors on oceanic carbonate chemistry.
Article
Environmental Sciences
Ariel K. Pezner, Travis A. Courtney, Hannah C. Barkley, Wen-Chen Chou, Hui-Chuan Chu, Samantha M. Clements, Tyler Cyronak, Michael D. DeGrandpre, Samuel A. H. Kekuewa, David I. Kline, Yi-Bei Liang, Todd R. Martz, Satoshi Mitarai, Heather N. Page, Max S. Rintoul, Jennifer E. Smith, Keryea Soong, Yuichiro Takeshita, Martin Tresguerres, Yi Wei, Kimberly K. Yates, Andreas J. Andersson
Summary: Using data from 32 representative reef sites, the authors find that hypoxia is already widespread on coral reefs. Under future scenarios of ocean warming and deoxygenation, the duration, intensity, and severity of hypoxia will increase, with a significant proportion of reefs facing severe hypoxia. This projected oxygen loss could have negative consequences for coral reef taxa due to the important role of oxygen in organism functioning and fitness.
NATURE CLIMATE CHANGE
(2023)
Article
Ecology
Charly A. Moras, Lennart T. Bach, Tyler Cyronak, Renaud Joannes-Boyau, Kai G. Schulz
Summary: Ocean alkalinity enhancement is a method to remove CO2 from the atmosphere and counteract ocean acidification by dissolving alkaline minerals. The dissolution of minerals suitable for this method and the occurrence of secondary precipitation of CaCO3 are critical knowledge gaps. The study found that the dissolution of certain minerals in seawater can lead to secondary CaCO3 precipitation, but this can be avoided by dilution and other methods.
Article
Biodiversity Conservation
Remy R. Okazaki, Erica K. Towle, Ruben van Hooidonk, Carolina Mor, Rivah N. Winter, Alan M. Piggot, Ross Cunning, Andrew C. Baker, James S. Klaus, Peter K. Swart, Chris Langdon
GLOBAL CHANGE BIOLOGY
(2017)
Article
Ecology
Erica K. Towle, Ana M. Palacio-Castro, Andrew C. Baker, Chris Langdon
REGIONAL STUDIES IN MARINE SCIENCE
(2017)
Article
Multidisciplinary Sciences
Tyler Cyronak, Andreas J. Andersson, Chris Langdon, Rebecca Albright, Nicholas R. Bates, Ken Caldeira, Renee Carlton, Jorge E. Corredor, Rob B. Dunbar, Ian Enochs, Jonathan Erez, Bradley D. Eyre, Jean-Pierre Gattuso, Dwight Gledhill, Hajime Kayanne, David I. Kline, David A. Koweek, Coulson Lantz, Boaz Lazar, Derek Manzello, Ashly McMahon, Melissa Melendez, Heather N. Page, Isaac R. Santos, Kai G. Schulz, Emily Shaw, Jacob Silverman, Atsushi Suzuki, Lida Teneva, Atsushi Watanabe, Shoji Yamamoto
Article
Limnology
Chris Langdon, Rebecca Albright, Andrew C. Baker, Paul Jones
LIMNOLOGY AND OCEANOGRAPHY
(2018)
Editorial Material
Ecology
Jonathan S. Stark, Chris Langdon
NATURE ECOLOGY & EVOLUTION
(2019)
Article
Multidisciplinary Sciences
Wei-Jun Cai, Yuan-Yuan Xu, Richard A. Feely, Rik Wanninkhof, Bror Jonsson, Simone R. Alin, Leticia Barbero, Jessica N. Cross, Kumiko Azetsu-Scott, Andrea J. Fassbender, Brendan R. Carter, Li-Qing Jiang, Pierre Pepin, Baoshan Chen, Najid Hussain, Janet J. Reimer, Liang Xue, Joseph E. Salisbury, Jose Martin Hernandez-Ayon, Chris Langdon, Qian Li, Adrienne J. Sutton, Chen-Tung A. Chen, Dwight K. Gledhill
NATURE COMMUNICATIONS
(2020)
Article
Oceanography
Melissa Melendez, Joseph Salisbury, Dwight Gledhill, Chris Langdon, Julio M. Morell, Derek Manzello, Sylvia Rodriguez-Abudo, Sylvia Musielewicz, Adrienne Sutton
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2020)
Article
Environmental Sciences
Graham Kolodziej, Michael S. Studivan, Arthur C. R. Gleason, Chris Langdon, Ian C. Enochs, Derek P. Manzello
Summary: Since 2014, stony coral tissue loss disease has spread throughout Florida's coral reef tract and the Caribbean, reaching the upper Florida Keys by 2016. Despite the presence of the disease at Cheeca Rocks, the impact on coral cover and community structure has been relatively low compared to other sites on Florida's coral reef tract, highlighting the potential role of this site in coral resilience.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Limnology
Melissa Melendez, Joseph Salisbury, Dwight Gledhill, Chris Langdon, Julio M. Morell, Derek Manzello, Adrienne Sutton
Summary: The study presents a quantitative approach to analyze the metabolic processes of coral reef ecosystems and demonstrates the impacts of ocean acidification using long-term observational data. The dominant metabolic processes were net respiration and net dissolution, and the net ecosystem calcification rates were found to be relatively low. The results suggest that net ecosystem production plays a significant role in net ecosystem calcification.
LIMNOLOGY AND OCEANOGRAPHY
(2022)
Article
Ecology
Madeline L. Kaufman, Martine D'Alessandro, Chris Langdon, Diego Lirman
Summary: Research shows that factors such as genotype, lesion area, colony size, and tissue, chlorophyll a, lipid, and symbiont densities influence the recovery capacity of staghorn corals, with smaller lesion areas, lower tissue densities, and higher chlorophyll a densities promoting faster healing. Differences in healing rate among genotypes are significant, and there is evidence of a tradeoff between growth and wound recovery in corals.
MARINE ECOLOGY PROGRESS SERIES
(2021)
Article
Ecology
Christopher D. Stallings, Ileana M. Freytes-Ortiz, Martina M. Plafcan, Chris Langdon
Summary: Mussels use their shells for protection and can thicken or grow in response to predator cues, with elevated pCO(2) having negative effects on their morphology and physiology. However, the inducible defenses of mussels are not affected by elevated pCO(2). The study found that mussels exposed to elevated pCO(2) exhibited greater growth in shell depth, resulting in rounder shapes, but this did not affect average crab handling times.
MARINE ECOLOGY PROGRESS SERIES
(2021)
Review
Environmental Sciences
Marilaure Gregoire, Veronique Garcon, Hernan Garcia, Denise Breitburg, Kirsten Isensee, Andreas Oschlies, Maciej Telszewski, Alexander Barth, Henry C. Bittig, Jacob Carstensen, Thierry Carval, Fei Chai, Francisco Chavez, Daniel Conley, Laurent Coppola, Sean Crowe, Kim Currie, Minhan Dai, Bruno Deflandre, Boris Dewitte, Robert Diaz, Emilio Garcia-Robledo, Denis Gilbert, Alessandra Giorgetti, Ronnie Glud, Dimitri Gutierrez, Shigeki Hosoda, Masao Ishii, Gil Jacinto, Chris Langdon, Siv K. Lauvset, Lisa A. Levin, Karin E. Limburg, Hela Mehrtens, Ivonne Montes, Wajih Naqvi, Aurelien Paulmier, Benjamin Pfeil, Grant Pitcher, Sylvie Pouliquen, Nancy Rabalais, Christophe Rabouille, Virginie Recape, Michael Roman, Kenneth Rose, Daniel Rudnick, Jodie Rummer, Catherine Schmechtig, Sunke Schmidtko, Brad Seibel, Caroline Slomp, U. Rashid Sumalia, Toste Tanhua, Virginie Thierry, Hiroshi Uchida, Rik Wanninkhof, Moriaki Yasuhara
Summary: GO(2)DAT aims to establish a global Ocean Oxygen Database and ATlas to support advanced data analysis and biogeochemical model development, enhance understanding and forecasting capabilities of ocean O-2 changes and deoxygenation trends, and drive the development of climate and ocean health indicators.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Environmental Sciences
Li-Qing Jiang, Denis Pierrot, Rik Wanninkhof, Richard A. Feely, Bronte Tilbrook, Simone Alin, Leticia Barbero, Robert H. Byrne, Brendan R. Carter, Andrew G. Dickson, Jean-Pierre Gattuso, Dana Greeley, Mario Hoppema, Matthew P. Humphreys, Johannes Karstensen, Nico Lange, Siv K. Lauvset, Ernie R. Lewis, Are Olsen, Fiz F. Perez, Christopher Sabine, Jonathan D. Sharp, Toste Tanhua, Thomas W. Trull, Anton Velo, Andrew J. Allegra, Paul Barker, Eugene Burger, Wei-Jun Cai, Chen-Tung A. Chen, Jessica Cross, Hernan Garcia, Jose Martin Hernandez-Ayon, Xinping Hu, Alex Kozyr, Chris Langdon, Kitack Lee, Joe Salisbury, Zhaohui Aleck Wang, Liang Xue
Summary: Effective data management is crucial for oceanographic research, and this article introduces new and updated best practice data standards for discrete chemical oceanographic observations. These standards cover column header abbreviations, quality control flags, missing value indicators, and standardized calculation of certain properties. The aim is to improve current practices, promote international usage, and facilitate data sharing and permanent archiving for better research in ocean biogeochemistry.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Multidisciplinary Sciences
Li-Qing Jiang, Alex Kozyr, John M. Relph, Errol I. Ronje, Linus Kamb, Eugene Burger, Jonathan Myer, Liem Nguyen, Krisa M. Arzayus, Tim Boyer, Scott Cross, Hernan Garcia, Patrick Hogan, Kirsten Larsen, A. Rost Parsons
Summary: OCADS is a data management system that manages various ocean carbon and acidification data, including observations and experimental results. It aims to provide data, information, products, and services related to ocean carbon and acidification, and adopts a customer-centric approach to improve its data management practices.
Article
Environmental Sciences
Emma Pontes, Chris Langdon, Fuad A. Al-Horani
Summary: Climate change and increasing sea surface temperature have worsened ocean deoxygenation, affecting the metabolic response and tolerance range of Caribbean coral species and their algal symbionts. This study found that they exhibited varying degrees of tolerance to hypoxia, providing insights into the community composition of reefs under changing climate and guiding restoration efforts.
FRONTIERS IN MARINE SCIENCE
(2023)