CM003
Biogeochemical and Ecological Insights for Evaluation of Marine Carbon Dioxide Removal (mCDR)

Session ID#: 259728

Session Description:
Marine carbon dioxide removal (mCDR) encompasses several ocean-based strategies to sequester atmospheric CO2 in the ocean to mitigate anthropogenic climate change. With a growing interest in chemical and biological mCDR approaches, there is an urgent need to understand their ecological, biogeochemical, and geochemical impacts across marine environments. This session focuses on the environmental information that must underpin planning and assessment of these climate interventions, including additionality, durability, leakage, and fitness for purpose.

We invite experimental, observational, and modeling studies that quantify the processes and interactions key to understanding the function and impacts of mCDR, including various types of OAE, ocean fertilization, seaweed cultivation, biomass sinking, and more. Relevant topics include the measurement and monitoring of carbon flows and storage, ecological responses across trophic levels of pelagic and benthic communities, geochemical efficiencies, changes in nutrient cycling, and regional to global-scale modeling of mCDR efficacy and feedbacks. We encourage interdisciplinary studies, including those not originally designed for mCDR applications, that provide valuable insight into the functioning, risks, and co-benefits of these interventions.

This session aims to identify key knowledge gaps, environmental trade-offs, and unintended consequences of mCDR activities, while fostering discussion on strategies for evaluating long-term ecosystem responses in real-world settings.

Co-Sponsor(s):
  • Climate and Ocean Change -
  • Marine Ecology and Biodiversity -
  • Ocean Biology and Biogeochemistry -
Index Terms:

0414 Biogeochemical cycles, processes, and modeling [BIOGEOSCIENCES]
1050 Marine geochemistry [GEOCHEMISTRY]
4804 Benthic processes, benthos [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4806 Carbon cycling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
Student/Early Career Chair:  Sarah Douglas, Bigelow Laboratory for Ocean Sciences, East Boothbay, United States
Primary Chair:  Karen Stamieszkin, Bigelow Lab for Ocean Sciences, East Boothbay, United States
Co-chairs:  Giulia Faucher, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, Nina Bednarsek, Oregon State University, Cooperative Institute for Marine Resources Studies, Newport, OR, United States and Melissa Melendez, University of Hawai'i at Mānoa, Oceanography, Honolulu, United States
 
Quantifying Marine Sediment Feedbacks to Ocean Alkalinity Enhancement (1872833)
Kira J Biener, Yale University, Earth and Planetary Sciences, New Haven, United States, Nicolas Theunissen, Yale University, Earth and Planetary Sciences, New Haven, CT, United States, Mallory Ringham, Ebb Carbon, Oceanography, MRV, South San Francisco, United States, Cody Shaw, Stony Brook University, Chemistry, Stony Brook, NY, United States, Wade R. McGillis, University of Notre Dame, College of Engineering, Notre Dame, United States and Peter A Raymond, Yale University, School of the Environment, New Haven, United States
 
An In Situ Analysis of the Impact of Ocean Alkalinity Enhancement on Net Community Production in Halifax, Nova Scotia (2007939)
Katryna Niva1, Stephanie Duffy2, Alireza Merikhi1, Jennifer Tolman2, Arnaud Laurent3, Douglas Wallace3, Katja Fennel3, Julie LaRoche2 and Nicolas Cassar1, (1)Duke University, Division of Earth and Climate Sciences, Nicholas School of the Environment, Durham, NC, United States, (2)Dalhousie University, Department of Biology, Halifax, NS, Canada, (3)Dalhousie University, Department of Oceanography, Halifax, NS, Canada
 
The Effect of Ocean Alkalinity Enhancement and Elevated Temperature on the Indo-Pacific Coral Stylophora pistillata (2008356)
Alice Ball and Oscar Branson Dr, University of Cambridge, Department of Earth Sciences, Cambridge, United Kingdom
 
Evaluating effects of ocean alkalinity enhancement on carbonate sand biogeochemistry across the Great Barrier Reef (2008521)
James Westphalen, Georgia Southern University, Institute for Coastal Plain Science, Statesboro, United States
 
Trace metal cycling in olivine-amended sediments – insights from a long-term mesocosm experiment on ocean alkalinity enhancement (2009906)
Benjamin Van Heurck, Geobiology group, Department of Biology, University of Antwerp, Antwerp, Belgium, Francesc Montserrat, ARK Rewilding Nederland, Nijmegen, Netherlands, Diana Vasquez Cardenas, University of Antwerp, Antwerp, Belgium, Astrid Hylén, Aix-Marseille Université, CNRS, IRD, INRAE, CEREGE, Aix-en-Provence, France, Matthias Kreuzburg, Leibniz-Institute for Baltic Sea Research, Rostock, Germany, Daniel Frick, University of Kiel, Institute of Geosciences, Kiel, Germany and Filip J R Meysman, Geobiology, Department of Biology, University of Antwerp, Antwerp, Belgium
 
Metabolism metrics for the mCDR monitoring toolkit: Real-time ecosystem insights (2010629)
Emily J Chua, Boston College, Earth and Environmental Sciences, Chestnut Hill, United States and Hilary I Palevsky, Boston College, Earth and Environmental Sciences, Chestnut Hill, MA, United States
 
Assessing Phytoplankton Growth Across Size Classes Under Alkalinity Enhancement in the Gulf of Maine (2011545)
Frankie Lopez, Hongjie Wang, Jacqueline Rosa and Susanne Menden-Deuer, University of Rhode Island, Graduate School of Oceanography, Narragansett, United States
 
Quantifying Background Ocean Carbon Uptake in the Context of Marine Carbon Dioxide Removal (2011550)
Thea Hatlen Heimdal1, Galen A McKinley1, Caroline Shaum1, Amanda R Fay1, Viviana Acquaviva2 and Adrienne J Sutton3, (1)Columbia University and Lamont-Doherty Earth Observatory, New York, United States, (2)CUNY New York City College of Technology, Brooklyn, United States, (3)NOAA Pacific Marine Environmental Laboratory, Seattle, United States
 
Evaluating the Additionality of Dissolved and Mineral-Based Alkalinity Enhancement in Coastal Sediments: Insights from a Flux Chamber Study (2011951)
Nadine Lehmann1, Damon Britton1, Marianne Pelletier1, Bradley Eyre2, Tyler Rohr1, Max Rintoul1, Ashley T Townsend3 and Lennart Thomas Bach1, (1)Institute for Marine and Antarctic Studies, Hobart, TAS, Australia, (2)Southern Cross University, Centre for Coastal Biogeochemistry, Lismore, NSW, Australia, (3)University of Tasmania, Central Science Laboratory, Hobart, TAS, Australia
 
Ocean Alkalinity Enhancement Alters Coastal Microbial Diversity and Promotes the Proliferation of Marine Parasites: Insights from Mesocosm Experiments in the California Coastal Upwelling System (2012858)
James Gately1,2, Sylvia M Kim1,2, Zoë S. Welch1,2, Joaquín Martínez Martínez3, Dylan Catlett1, Benjamin Jin4, Madeline Manzagol1, Angela Larson1, Mark A Brzezinski1,2 and Debora Iglesias-Rodriguez1,2, (1)University of California Santa Barbara, Ecology, Evolution, and Marine Biology, Santa Barbara, United States, (2)University of California Santa Barbara, Marine Science Institute, Santa Barbara, United States, (3)University of Maryland Center for Environmental Science Horn Point Laboratory, Cambridge, United States, (4)University of California Santa Barbara, Molecular, Cellular, and Developmental Biology, Berkeley, United States
 
Durability and consequences of marine anoxic carbon storage: a comparison of seawater, brine, and assessment methods (2012885)
Natalya Evans1,2, Aaron Martinez3 and Morgan Raven2, (1)Dalhousie University, Department of Oceanography, Halifax, Canada, (2)University of California Santa Barbara, Marine Science Institute, Santa Barbara, United States, (3)University of California Santa Barbara, Marine Science Institute, Santa Barbara, CA, United States
 
The potential of various minerals for Ocean Alkalinity Enhancement in the eastern Arabian Sea (2013685)
Shreya Mehta1, Jitender Kumar1, Himanshu Saxena1,2, Sipai Nazirahmed1, Jyotiranjan S. Ray1, Sanjeev Kumar1, Indrani Karunasagar3, Vinaya Kumar Vase4, Chinnadurai S5 and Arvind Singh1, (1)Physical Research Laboratory, Geosciences Division, Ahmedabad, India, (2)University of Bologna, Department of Physics and Astronomy “Augusto Righi” (DIFA), Bologna, Italy, (3)NITTE University, Mangalore, India, (4)Central Marine Fisheries Research Institute, Veraval, India, (5)ICAR-Central Institute of Fisheries Technology, Veraval, India
 
Ocean alkalinity enhancement affects Southern Ocean phytoplankton growth through nutrient fertilisation (2014839)
Anita Butterley1, Pauline Latour1,2, Talitha Nelson1, Robert Strzepek2 and Lennart Thomas Bach3, (1)Australian Centre for Excellence in Antarctic Science, Institute for Marine and Antarctic Studies, Hobart, TAS, Australia, (2)Australian Antarctic Program Partnership, Institute for Marine and Antarctic Studies, Hobart, TAS, Australia, (3)Institute for Marine and Antarctic Studies, Hobart, TAS, Australia
 
The Impact of Large-Scale Macroalgae Cultivation and Harvesting Strategies on the Marine Carbon Dioxide Removal Efficacy and Marine Biogeochemistry (2014846)
Prima Anugerahanti1, Andrew Yool2, Chelsey Adrianne Baker2 and Julien Palmieri2, (1)National Oceanography Centre, Liverpool, United Kingdom, (2)National Oceanography Centre, Southampton, United Kingdom
 
The need for detailed Air-Sea Gas Exchange measurements before scaling marine Carbon Dioxide Removal – Results from a 3He/SF6 Dual Tracer Release Experiment in an Icelandic fjord (2016244)
Lennart Gerke, [C]Worthy, Honolulu, United States, David T Ho, University of Hawaii at Manoa, Department of Oceanography, Honolulu, United States and Ulla Heede, University of Colorado Boulder, Cooperative Institute for Research in the Environmental Sciences, Boulder, United States
 
Evaluating Tradeoffs Between Chlorophyll Shading and Zooplankton Migration Depth in Ocean Carbon Sequestration (2016856)
Enrique Ruiz, Bowdoin College, Brunswick, ME, United States and Karen Stamieszkin, Daniel Clements
 
Effect-based OAE experiments require specific setups to provide meaningful insights – Perspectives from olivine-based OAE lab experiments with larval and juvenile flat oysters (Ostrea edulis). (2017149)
Marco Rump1, Gunnar Gerdts2, Christian Bock Sr.3, Gisela Lannig-Bock Sr.3 and Bernadette Pogoda Sr.4, (1)Alfred Wegener Institute Helmholtz-Wadden Sea Station Helgoland, Shelf Sea System Ecology, Helgoland, Germany, (2)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research, Biologische Anstalt Helgoland, Helgoland, Germany, (3)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Integrative Ecophysiology, Bremerhaven, Germany, (4)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Shelf Sea System Ecology, Bremerhaven, Germany
 
Seasonality and Mineral Type Shape Phytoplankton Responses to Ocean Alkalinity Enhancement in Temperate Waters – A Mesocosm Study (2018643)
Juliane Katharina Tammen1, Leila Kittu2, Kai Schulz3 and Ulf Riebesell2, (1)GEOMAR Helmholtz Centre for Ocean Research, Kiel, Germany, (2)GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, (3)Southern Cross University, Centre for Coastal Biogeochemistry, Lismore, NSW, Australia
 
Efficacy of seaweed-based carbon dioxide removal reduced by iron limitation and nutrient competition with phytoplankton (2019440)
Manon Berger, LMD/IPSL, Ecole Normale Supérieure/Université PSL, CNRS, Paris 14, France, Lester Kwiatkowski, LOCEAN, CNRS, Sorbonne Universite, Paris Cedex 05, France, David T Ho, University of Hawaii at Manoa, Honolulu, HI, United States; [C]Worthy, LLC, Boulder, United States and Laurent Bopp, LMD/IPSL, Ecole Normale Supérieure/Université PSL, CNRS, Département de Géosciences, Paris, France
 
Enhanced weathering of olivine in seawater: assessing the impact on growth of an algal phytoplankton species. (2019530)
Jonathan Rimmer and Pascal Salaun, University of Liverpool, Liverpool, United Kingdom
 
Creating co-designed biogeochemical models to assess secondary impacts of OAE on N2O production and nitrogen cycling processes (2020174)
Kalina Cozette Grabb1, Erik Johnson1, Ruth C Musgrave2, Wendy Gentleman3, Tyler Eddy4 and Carolyn Buchwald2, (1)Dalhousie University, Department of Oceanography, Halifax, Canada, (2)Dalhousie University, Department of Oceanography, Halifax, NS, Canada, (3)Dalhousie University, Department of Engineering Mathematics and Internetworking, Halifax, Canada, (4)Memorial University, St. John's, Canada
 
In-situ assessment of the fate of sunken biomass in the deep ocean: insights into biogeochemical cycling, carbon sequestration potential, and benthic ecosystem alteration (2020316)
Kohen Witt Bauer1, Paulo Correa1, Alex Lupin1, Stefanie Mellon1, Mojtaba Fakhraee2,3, Anna Savage4, Alison K. Tune5, Alexander Slonimer6, Bradley Rochlin5 and Fabio De Leo1,7, (1)University of Victoria, Ocean Networks Canada, Victoria, BC, Canada, (2)Yale University, New Haven, United States, (3)University of Connecticut, Groton, United States, (4)Sofar Ocean Technologies, San Francisco, United States, (5)Cascade Climate, Boston, United States, (6)Ocean Networks Canada, Victoria, Canada, (7)University of Victoria, Department of Biology, Victoria, BC, Canada
 
A novel seawater-sediment flow-through reactor system to simulate mCDR interventions under field conditions (2021022)
Tricia Light1, Devon Cole2, Tessa Crouch1, Jaclyn E Pittman Cetiner, PhD2, Hailey Hayes2 and M. Grace Andrews2, (1)Hourglass Climate, San Pedro, United States, (2)Hourglass Climate, Montclair, United States
 
Ocean iron fertilization trade-off between climate benefits and ecological costs (2021791)
Jun Yu1, Jefferson Keith Moore1, Francois Primeau2, Amy Nuno1, Kristen M. Krumhardt3, Michael Levy4, Keith T Lindsay5, Hui Wang6 and Adam Martiny2, (1)University of California Irvine, Earth System Science, Irvine, United States, (2)University of California Irvine, Earth System Science, Irvine, CA, United States, (3)NCAR, Boulder, United States, (4)National Center for Atmospheric Research, Climate and Global Dynamics, Boulder, United States, (5)NCAR, Boulder, CO, United States, (6)University of California Irvine, Department of Earth System Science, Irvine, United States
 
72-hour High-Frequency CTD Hydrocasts as Baseline Monitoring in the Western Subtropical North Pacific: Insights for Marine Carbon Dioxide Removal Interventions (2022106)
Shinsuke Kawagucci1, Akiko Makabe2, Taichi Yokokawa3 and Chiho Sukigara1, (1)JAMSTEC Japan Agency for Marine-Earth Science and Technology, Kanagawa, Japan, (2)JAMSTEC, Yokosuka, Japan, (3)Japan Agency for Marine-Earth Science and Technology, Yokosuka, Japan
 
Can imaging sediment traps predict differences in the remineralization depths of sinking POC and PON? (2022334)
Margaret Estapa1, Colleen Durkin2, Sachithma Edirisinghe1, Nils Haëntjens3, Roger Patrick Kelly4, Fernanda Lecaros2, Melissa Omand4, Sean O'Neill1 and Yixuan Song4, (1)University of Maine, School of Marine Sciences, Darling Marine Center, Walpole, United States, (2)Monterey Bay Aquarium Research Institute, Moss Landing, United States, (3)University of Maine, School of Marine Sciences, Orono, ME, United States, (4)University of Rhode Island, Graduate School of Oceanography, Narragansett, United States
 
Long-term particle flux time-series indicate stability of organic carbon flux despite surface variability in Subantarctic waters (2022966)
Cathryn Wynn-Edwards1,2, Mr. Xiang Yang2,3, Scott Nodder4 and Elizabeth Shadwick1,2, (1)CSIRO, Environment, Hobart, TAS, Australia, (2)Australian Antarctic Program Partnership, Hobart, TAS, Australia, (3)University of Tasmania, Institute for Marine and Antarctic Studies, Hobart, TAS, Australia, (4)National Institute of Water and Atmospheric Research, Wellington, New Zealand
 
Simulated scenarios of pulsed ocean alkalinity enhancement in an oligotrophic region and potential responses in geochemistry and plankton dynamics (2024002)
Markus Schartau1, Tronje Peer Kemena2, Vanessa Lampe2 and Markus Pahlow2, (1)GEOMAR Helmholtz Centre for Ocean Research Kiel, Germany, (2)GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
 
Sensor Requirements to Determine Benthic Alkalinity Fluxes with the Aquatic Eddy Covariance and Gradient Flux Techniques (2024639)
Dirk Koopmans and Allison Schaap, National Oceanography Centre, Southampton, United Kingdom
 
The Effect of Alkalinity Enhancement on Montipora capitata at Multiple Life Stages (2026293)
Rayna McClintock1, Melissa Melendez1, Conall Gerald McNicholl2, Mario Mora3, Zachary Quinlan1,4, Naomi Rohrbaugh1, Nicholas J Hawco1, Keisha Bahr5, Christopher L Sabine1 and Craig E Nelson6, (1)University of Hawai'i at Mānoa, Oceanography, Honolulu, United States, (2)Hawai'i Institute of Marine Biology, Honolulu, United States, (3)Hawai'i Institute of Marine Biology, Kaneohe, United States, (4)San Diego State University, Department of Biology, San Diego, United States, (5)Texas A&M University, Marine Biology, Corpus Christi, United States, (6)University of Hawaii at Manoa, HI, United States
 
Basalt and Kimberlite as Mineral Sources for Ocean Alkalinity Enhancement in Coastal and Shelf Sediments (2027033)
Tom Huysmans, Geobiology group, Department of Biology, University of Antwerp, Antwerp, Belgium, Sebastiaan van de Velde, Department of Marine Science, University of Otago, Dunedin, New Zealand and Filip J R Meysman, Geobiology, Department of Biology, University of Antwerp, Antwerp, Belgium
 
Combined effects of ocean alkalinity enhancement and warming on the North Sea phytoplankton community (2027086)
Daniel Franco López1, Amrita Bhaumik1, Jana Hüller2, Lev Nazarov1, Emma Stempel3, Herwig Stibor4, Andreina Zey1, Cédric Leo Meunier3 and Maarten Boersma5, (1)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research, Shelf Sea Ecology, Helgoland, Germany, (2)Ludwig-Maximilians-Universität München, Munich, Germany, (3)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research, Shelf Sea System Ecology, Helgoland, Germany, (4)Ludwig-Maximilians-Universität München, Department of Biology II, Munich, Germany, (5)Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, List, Germany
 
Divergent Phytoplankton Responses To Silicate-based and Lime-based Ocean Alkalinity Enhancement (2027984)
Leila Kittu1, Xiaoke Xin2, Joaquin Ortiz3, Kai Schulz4 and Ulf Riebesell1, (1)GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, (2)Institute of Marine Science and Technology, Shandong University, Qingdao, Qingdao, China, (3)MacroCarbon, Las Palmas de Gran Canaria, ES, Las Palmas, Spain, (4)Southern Cross University, Centre for Coastal Biogeochemistry, Lismore, NSW, Australia
 
Effects of ocean alkalinity enhancement on the ecophysiology of mussels (Mytilus edulis) (2028104)
Shelby Clarke, Dalhousie University, Department of Biology, Halifax, NS, Canada, William Alexander Nesbitt, Dalhousie University, Department of Oceanography, Halifax, NS, Canada, Tia Chai, Planetary Technologies, Halifax, Canada, Will Burt, Planetary Technologies, Dartmouth, NS, Canada and Ramon Filgueira, Dalhousie University, Marine Affairs Program, Halifax, NS, Canada
 
The Impact of Ocean Alkalinity Enhancement on Globigerinoides ruber Growth and Calcification (2028501)
Laura Haynes1, Jennifer S Fehrenbacher2, Sean Baxter3, Acadia Helfand4, Kathleen Langston5, Emmaline Miller3, Madeleine Reed-Horn5, Arlo Rucker5, Austin Shinzato3, Leocadio Blanco-Bercial6 and Dr. Amy E Maas, PhD7, (1)Vassar College, Earth Science and Geography, Poughkeepsie, NY, United States, (2)Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR, United States, (3)Oregon State University, Corvallis, United States, (4)Vassar College, Earth Science and Geography, Poughkeepsie, United States, (5)Vassar College, Poughkeepsie, United States, (6)Bermuda Institute of Ocean Sciences - Arizona State University, Julie Ann Wrigley Global Futures Laboratory, St. George's, Bermuda, (7)Bermuda Institute of Ocean Sciences - Arizona State University, School of Ocean Futures, St. George's, Bermuda
 
Swimmers and settlers: the effects of olivine substrate on the recruitment of the Pacific oyster (2028718)
Cale Miller1, Matthias Huber2, Hugo Koechlin2 and Fabrice Pernet2, (1)Utrecht University, Department of Earth Sciences, Utrecht, Netherlands, (2)IFREMER, Plouzané, France
 
Assessing the Sensitivity of the Olympia oyster, Ostrea lurida, to Ocean Alkalinity Enhancement (2029563)
Benjamin Epley and George Gerard Waldbusser, Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, United States
 
Assessing Ocean Alkalinity Enhancement in Wastewater Outfall Zones: Baseline Chemistry and Laboratory Dissolution Experiments (2029641)
Alison MacLeod1, Will Burt2 and Hal Bradbury1, (1)University of British Columbia, Earth, Ocean, and Atmospheric Sciences, Vancouver, BC, Canada, (2)Planetary Technologies, Dartmouth, NS, Canada
 
Beyond Carbon Storage: Ocean Alkalinity Enhancement May Also Reduce N2O Production (2029718)
Mr. Wanja Feodor Böhme1, Sergio Alias Arroyo1, Tony Gutierrez2, Hermann Bange3 and David Needham1, (1)GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, (2)Heriot-Watt University, Edinburgh, United Kingdom, (3)GEOMAR Helmholtz Centre for Ocean Research Kiel, Chemical Oceanography, Kiel, Germany
 
Assessing the Impacts of Oceanic Olivine Dusting, a proposed Ocean Alkalinity EnhancementCarbon Removal Method, on the Buoyancy and Viability of Planktic Foraminifera (2029939)
Jennifer S Fehrenbacher1, Laura Haynes2, Sean Baxter3, Acadia Helfand4, Kathleen Langston5, Emmaline Miller3, Madeleine Reed-Horn5, Arlo Rucker5, Austin Shinzato3, Leocadio Blanco-Bercial6 and Dr. Amy E Maas, PhD7, (1)Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, United States, (2)Columbia University of New York, Palisades, NY, United States, (3)Oregon State University, Corvallis, United States, (4)Vassar College, Earth Science and Geography, Poughkeepsie, United States, (5)Vassar College, Poughkeepsie, United States, (6)Bermuda Institute of Ocean Sciences - Arizona State University, Julie Ann Wrigley Global Futures Laboratory, St. George's, Bermuda, (7)Bermuda Institute of Ocean Sciences - Arizona State University, School of Ocean Futures, St. George's, Bermuda
 
Developing a Community-Driven Environmental Impact Monitoring Framework for Ocean Alkalinity Enhancement (OAE) Field Research (2030308)
Brishelle Gamble1, Sam Fawcett2, Helen S Findlay3, Irene Polnyi4, Laura Stieghorst5, David Keller Dr.6, Tim Fileman2, Tamsin Dobson2 and Vassilis A Kitidis3, (1)Carbon to Sea Initiative, New York, United States, (2)PML Applications, Plymouth, United Kingdom, (3)Plymouth Marine Laboratory, Plymouth, United Kingdom, (4)Carbon to Sea Initiative, Field Research, DC, United States, (5)BÁSICO, New York, United States, (6)Carbon to Sea Initiative, Washington D.C., United States
 
The impacts of Direct Ocean Carbon Capture and Storage (DOCCS) discharge on marine organisms (2030667)
Guy Hooper1,2, Helen S Findlay1, Thomas George Bell1, Rod Wilson3, Matthew Keys4, Glen L Wheeler4, Olivia Burnip1,5, Rachel L Coppock1 and Paul Richard Halloran2, (1)Plymouth Marine Laboratory, Plymouth, United Kingdom, (2)University of Exeter, Exeter, United Kingdom, (3)University of Exeter, Biosciences, Exeter, United Kingdom, (4)Marine Biological Association, Plymouth, United Kingdom, (5)Plymouth University, Plymouth, United Kingdom
 
An in situ Field Experiment Investigating the Effectiveness and Biological Responses of Mineral Based Ocean Alkalinity Enhancement in Coastal Sediments. (2031928)
Damon Britton1, Nadine Lehmann1, Marianne Pelletier1, Adam Davey2, Norfaizny B Hasweera2, Sebastian Vadillo Gonzalez3,4 and Lennart Thomas Bach1, (1)Institute for Marine and Antarctic Studies, Hobart, TAS, Australia, (2)Institute for Marine and Antarctic Studies, Taroona, Australia, (3)University of Sydney, Sydney, Australia, (4)University of New South Wales, Sydney, Australia
 
Physiological and Biogeochemical Impacts of Brucite-Inspired Ocean Alkalinity Enhancement on Emiliania huxleyi (2032358)
Madeline Manzagol1,2, Angela Larson1, Sylvia M Kim1,2, James Gately1,2 and Debora Iglesias-Rodriguez1,2, (1)University of California Santa Barbara, Ecology, Evolution, and Marine Biology, Santa Barbara, United States, (2)University of California Santa Barbara, Marine Science Institute, Santa Barbara, United States
 
Physiological Responses of a Temperate Brown Macroalgae Exposed to Ocean Alkalinity Enhancement (2033317)
Marianne Pelletier, Lennart Thomas Bach, Nadine Lehmann and Damon Britton, Institute for Marine and Antarctic Studies, Hobart, TAS, Australia
 
Perspectives on marine carbon dioxide removal from the Global Ocean Acidification Observing Network (2033853)
Helen S Findlay1, Richard A Feely2, Kalina Grabb3, Elizabeth Jewett4,5, Elise Keister6, Gabby Kitch7, Dr. Yuri Artioli, PhD1, Punyasloke Bhadury8, Jerry Blackford1, Odile Crabeck9, Anwesha Ghosh10, Yaru Li1, Kaitlyn Lowder11, Shreya Mehta12, Bryce Van Dam13, Houda Beghoura14, Sebastian J Hennige15, Noam Karo16, Andrij Z Horodysky17, Elizabeth Wright-Fairbanks18, Sally M Salaah19 and Federica Ragazzola20, (1)Plymouth Marine Laboratory, Plymouth, United Kingdom, (2)NOAA PMEL, Seattle, United States, (3)Dalhousie University, Halifax, Canada, (4)NOAA Northeast Fisheries Science Center, United States, (5)NOAA Ocean Acidification Program, Silver Spring, United States, (6)NOAA Research, Ocean Acidification Program, Silver Spring, United States, (7)Carbon Removal Standards Initiative, Washington DC, United States, (8)Indian Institute of Science Education and Research Kolkata, Department of Biological Sciences and Centre for Excellence in Blue Economy, Kolkata, India, (9)Université de Liège, Chemical Oceanography Unit, Liège, Belgium, (10)Indian Institute of Science Education and Research Kolkata, Kolkata, India, (11)The Ocean Foundation, Ocean Science Equity (EquiSea) Initiative, Washington, United States, (12)Physical Research Laboratory, Geosciences Division, Ahmedabad, India, (13)Helmholtz-Zentrum Hereon, Geesthacht, Germany, (14)University of Bergen, Geophysical Institute and Bjerknes Centre for Climate Research, Bergen, Norway, (15)University of Edinburgh, Edinburgh, United Kingdom, (16)Technion Israel Institute of Technology, Haifa, Israel, (17)NOAA Northeast Fisheries Science Center, James J. Howard Laboratory, 40, Highlands, United States, (18)NOAA OAR Ocean Acidification Program, Silver Spring, United States, (19)National Institute of Oceanography and Fisheries, Cairo, Egypt, (20)Genoa Marine Center - Stazione Zoologica Anton Dohrn, Genoa, Italy
 
Responses of Brackish-Water Plankton Communities to Ocean Alkalinity Enhancement Using Mesocosms (2034219)
Henna Yliluikki, Novia University of Applied Sciences, University of Turku, Tammisaari, Finland, Katja Anttila, University of Turku, Biology, Turku, Finland, Ursula Strandberg, University of Eastern Finland, Joensuu, Finland and Jonna Engström-Öst, Novia University of Applied Sciences, Tammisaari, Finland
 
Ocean Alkalinity Enhancement: Balancing Climate Mitigation and Biological Restoration (2034424)
Nina Bednarsek, Instiute Josef Stefan, Environmental Department, LJubljana, Slovenia; Cooperative Institute for Marine Resources Studies, Oregon State University, Newport, United States, Hanna van de Mortel, UNiversity of Tasmania, Hobart, Australia, Richard A Feely, NOAA PMEL, Seattle, United States, Greg Pelletier, Washington Department of Ecology, Olympia, 300 Desmond Dr SE, WA 98503, USA, Olympia, United States, Jens Daniel Müller, Carbon to Sea Initiative, Washington D.C., United States, Nicolas Gruber, Environmental Physics, Institute of Biogeochemistry and Pollutant Dynamics, ETH Zurich, Zurich, Switzerland, Kristofer K Bauer, CIMERS Oregon State University, Newport, United States, MacKenna Hainey, Oregon State University, Corvallis, United States and Georgina Cepeda, Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
 
Marine Carbon Dioxide Removal and Carbon Dynamics in the Indian Seas: Opportunities, Challenges, and Regional Insights (2034642)
Sumit Sonar1, Susmita Raulo1, Sanjiba Kumar Baliarsingh1, Dhanya M. Lal1, Alakes Samanta1, BalaKrishnan Nair T M Dr.1, Sudheer Joseph1 and Suchismita Srichandan2, (1)Indian National Center for Ocean Information Services, Hyderabad, India, (2)Department of Marine Sciences, Berhampur University, Odisha, India, Bhanjabihar, India
 
The Potential for Estuarine Alkalinity Enhancement via Nearshore Crushed Limestone Application is Concealed by Natural Variability in the Marine Carbonate System (2036566)
Fiona Teevan-Kamhawi1, Hongjie Wang1, Jaime B Palter1, Stephanie Anderson2, Shelby Gibson1, Jason S Grear3, David T Ho4, Roger Patrick Kelly1, Robert A. Pockalny1, Rebecca S Robinson1, Samantha Siedlecki5 and Teresa Schwemmer6, (1)University of Rhode Island, Graduate School of Oceanography, Narragansett, United States, (2)Environmental Protection Agency, Narragansett, United States, (3)Environmental Protection Agency, Narragansett, RI, United States, (4)University of Hawaii, Oceanography, Honolulu, HI, United States, (5)University of Connecticut, Department of Marine Sciences, Groton, United States, (6)University of Rhode Island, Environmental Protection Agency, Narragansett, United States
 
Seasonal Variability in Plankton Metabolic and Community Responses To Ocean Alkalinity Enhancement: Insights From Mesocosm Experiments In The Kiel Fjord (2036973)
Svetlana Petric1, Giulia Faucher1, Laura Marín-Samper2, Kai Schulz3 and Ulf Riebesell1, (1)GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, (2)University of Las Palmas de Gran Canaria, Las Palmas, Spain, (3)Southern Cross University, Centre for Coastal Biogeochemistry, Lismore, NSW, Australia
 
Experimentally Investigating the Impact of Background Alkalinity and DIC on OAE Efficiency and Uptake Rate Using a Fit for Purpose Aquarium System (2039433)
Nicolas Theunissen, Yale University, Earth and Planetary Sciences, New Haven, CT, United States, Kira J Biener, Yale University, Earth and Planetary Sciences, New Haven, United States, Mallory Ringham, Ebb Carbon, Oceanography, MRV, South San Francisco, United States, Wade R. McGillis, University of Notre Dame, College of Engineering, Notre Dame, United States and Noah Planavsky, Yale University, Department of Earth and Planetary Sciences, New Haven, United States; Yale University, Yale Center for Natural Carbon Capture, New Haven, United States
 
Accessible Monitoring of Kelp Biomass Growth for mCDR: Validating a Low-Cost Video-Based Method (2039970)
Zhenna Azimrayat Andrews, Univesity of Cambridge, Department of Earth Sciences, Cambridge, United Kingdom, Dr. Kristen A Davis, Stanford University, Oceans, Stanford, United States, Geno R Pawlak, University of California San Diego, Mechanical and Aerospace Engineering, La Jolla, United States, John Ryan Taylor, University of Cambridge, DAMTP, Cambridge, United Kingdom, Alexandra v Turchyn, University of Cambridge, Department of Earth Sciences, Cambridge, United Kingdom and Madolyn Kelm
 
Biogeochemical response of coccolithophores to ocean alkalinity enhancement: insights from cultures and natural communities (2040569)
Chloe Dean1, Kay D Bidle2, Rachel T. Davitt2, Lukas Marx3, Kimberlee Thamatrakoln2 and Adam V. Subhas4, (1)MIT-WHOI Joint Program in Oceanography/Applied Ocean Science and Engineering, Woods Hole, United States, (2)Rutgers University, Marine and Coastal Sciences, New Brunswick, United States, (3)Woods Hole Oceanographic Institution, Marine Chemistry and Geochemistry, Woods Hole, United States, (4)Woods Hole Oceanographic Institution, Woods Hole, United States
 
Marine Carbon Fixation and Sinking (MCFS): Integrating Carbon Removal Technology with Threshold-Based Environmental Safeguards (2041076)
Amit Grossman, Sapir Markus Alford and Natalia Belkin, Gigablue Corp, NYC, United States
 
Assessing the Physiological Response of Phytoplankton Communities to Ocean Alkalinity Enhancement Across Different Environmental Regimes (2041152)
Rachel T. Davitt1, Chloe Smith2, Lukas Marx2, Kay D Bidle1, Adam Subhas2 and Kimberlee Thamatrakoln1, (1)Rutgers University, Marine and Coastal Sciences, New Brunswick, United States, (2)Woods Hole Oceanographic Institution, Marine Chemistry and Geochemistry, Woods Hole, United States
 
Carbonate chemistry observing and mCDR: new processes, new needs, and new systems (2042205)
Dr. Jessica N Cross, PhD1, Eric P Achterberg2, Dariia Atamanchuk3, Philip Joseph Bresnahan Jr4, Robert Byrne5, Michael DeGrandpre6, Katja Fennel3, Burke R Hales7, Socratis Loucaides8, Dr. Allison M Savoie9 and Aleck Zhaohui Wang10, (1)Pacific Northwest National Laboratory, Richland, WA, United States, (2)GEOMAR Helmholtz Centre for Ocean Research, Kiel, Germany, (3)Dalhousie University, Department of Oceanography, Halifax, NS, Canada, (4)University of North Carolina Wilmington, Earth and Ocean Sciences, Wilmington, United States, (5)University of South Florida, College of Marine Science, St. Petersburg, United States, (6)University of Montana, Department of Chemistry and Biochemistry, Missoula, United States, (7)Oregon State Univ, Corvallis, OR, United States, (8)National Oceanography Centre, Southampton, United Kingdom, (9)Texas A&M University College Station, Oceanography, College Station, United States, (10)Woods Hole Oceanographic Institution, Marine Chemistry and Geochemistry, Woods Hole, MA, United States
 
How do primary productivity and export covary in the Southern Ocean? Implications for nutrient fertilization (2042313)
B. B. Cael1, Manon Duret2, Lionel Guidi3 and Simon Ramondenc3, (1)University of Chicago, Chicago, IL, United States, (2)University of Chicago, Department of the Geophysical Sciences, Chicago, IL, United States, (3)Sorbonne Université, CNRS, Laboratoire d'Océanographie de Villefranche, UMR 7093 LOV, Villefranche-sur-Mer, France
 
Potential impacts of climate interventions on marine ecosystems (2042766)
Cheryl S Harrison1, Kelsey Roberts2, Tyler Rohr3, Morgan R Raven4, Michael Diamond5, Daniele Visioni2, Ben Kravitz6, Ryan Heneghan7, Colleen Petrik8, Daniele Bianchi9, Kelly Ortega-Cisneros10, Vanessa van Heerden11, Nicola A Wiseman12, Gouri Anil13, Marta Coll14, Zachary Cannizzo15, Joshua Coupe16, Ryan Freedman17, Kristen M. Krumhardt18, Lester Kwiatkowski19, Nicole S Lovenduski20, Jessica Y Luo21, Holly Olivarez13,22, Alan Robock23 and Jeroen Steenbeek24, (1)Louisiana State University, Department of Oceanography & Coastal Sciences, Baton Rouge, LA, United States, (2)Cornell University, Ithaca, NY, United States, (3)University of Tasmania, Hobart, TAS, Australia, (4)University of California Santa Barbara, Department of Earth Science, Santa Barbara, United States, (5)Florida State University, Tallahassee, United States, (6)Indiana University, Bloomington, United States, (7)Griffith University, School of Environment and Science, Nathan, QLD, Australia, (8)Scripps Institution of Oceanography, Integrative Oceanography Division, La Jolla, United States, (9)University of California Los Angeles, Department of Atmospheric and Oceanic Sciences, Los Angeles, United States, (10)MARIS, University of Cape Town, Cape Town, South Africa, (11)Louisiana Sea Grant College Program, Baton Rouge, United States, (12)University of Bristol, School of Geographical Sciences, Bristol, United Kingdom, (13)Louisiana State University, Baton Rouge, United States, (14)Institut de Ciències del Mar (ICM-CSIC), Barcelona, Spain, (15)NOAA, Silver Sping, United States, (16)University of Colorado at Boulder, Department of Atmospheric and Oceanic Sciences, Boulder, United States, (17)NOAA National Ocean Service, Channel Islands National Marine Sanctuary, Santa Barbara, CA, United States, (18)NCAR, Boulder, United States, (19)LOCEAN, CNRS, Sorbonne Universite, Paris Cedex 05, France, (20)University of Colorado, Department of Atmospheric and Oceanic Sciences, Boulder, CO, United States, (21)NOAA Geophysical Fluid Dynamics Laboratory, Princeton, United States, (22)University Corporation for Atmospheric Research, Cooperative Programs for the Advancement of Earth System Science (CPAESS), Boulder, United States, (23)Rutgers University, Department of Environmental Sciences, New Brunswick, United States, (24)Ecopath inc., Barcelona, Spain
 
The Framework for Ecotoxicological Modeling of mCDR (FEMM): Building unified assessment criteria for ecotoxicological risk assessment of mCDR projects (2043110)
Kristi Weighman, Emilia Jankowska, Cheyenne Moreau and M. Grace Andrews, Hourglass Climate, Montclair, United States
 
Stability Assessment of Calcium Carbonate Dissolution as a Marine Carbon Dioxide Removal Mechanism (2043344)
Amanda Melendez, Georgia Southern University, School of Earth, Enviroment, and Sustainability, Statesboro, United States; University of Puerto Rico at Mayagüez, Marine Science, Mayagüez, United States, Tyler Cyronak, Georgia Southern University, Institute for Coastal Plain Science, Statesboro, United States and Kimberly Gilbert, pHathom Technologies, Austin, United States
 
Coastal Los Angeles based Case Study from OAE PIIP: Ocean Alkalinity Enhancement Pelagic Impact Intercomparison Project (2043504)
Rucha Wani1, Devan Roper1, Karla Mejia2, Jason Graff3, Matthew Quinan1, Nick Rollins1 and William Berelson1, (1)University of Southern California, Earth Sciences, Los Angeles, United States, (2)Santa Monica College, Los Angeles, United States, (3)Oregon State University, Department of Botany and Plant Pathology, Corvallis, United States
 
Protein and Amino Acids as Indicators of Kelp Carbon Preservation (2043548)
Evelyn Marchand1, Sarah Douglas2 and Manoj Kamalanathan2, (1)Bates College, Lewiston, United States, (2)Bigelow Laboratory for Ocean Sciences, East Boothbay, United States
 
Clays as a Source of Iron for Ocean Fertilization (2043818)
Annika Bjorklund1, Jarret Mayo2 and Benjamin S Twining2, (1)Colby College, Department of Chemistry, Waterville, ME, United States, (2)Bigelow Laboratory for Ocean Sciences, East Boothbay, United States
 
Olivine Dissolution and Alkalinity Fluxes from a Field Trial of Ocean Alkalinity Enhancement with Olivine Sand (2043944)
Jaclyn E Pittman Cetiner, PhD1, Devon Cole, Hailey Hayes3, Thi Tran3, Chloe Leach4 and M. Grace Andrews3, (1)Organization Not Listed, Washington, DC, United States, (2)Hourglass Climate, Montclair, United States, (3)Vesta, PBC, San Francisco, United States
 
Effects of Encapsulation on Kelp Biomolecular Profiles and Organic Matter Transformation During Degradation (2044106)
Sarah V Douglas1, Manoj Kamalanathan2, Samuel Tan3, Robin Sleith2, Evelyn Marchand4, Peter Craig2, Brittney Honisch2, Jeremy Joel Rich5, David Emerson2, Greg Drozd6, Peter D. Countway7 and Nichole Price2, (1)Bigelow Lab for Ocean Sciences, East Boothbay, United States, (2)Bigelow Laboratory for Ocean Sciences, East Boothbay, United States, (3)University of Maine, School of Marine Sciences, Orono, United States, (4)Bates College, Lewiston, United States, (5)University of Maine, School of Marine Sciences, Orono, ME, United States, (6)Colby College, Chemistry, Waterville, United States, (7)Bigelow Laboratory for Ocean Sciences, East Boothbay, ME, United States
 
Trace Metal Uptake in Reef-Building Corals Exposed to Alkalinity-Enhanced Seawater (2046525)
Naomi Rohrbaugh1, Melissa Melendez1, Conall Gerald McNicholl2, Christopher L Sabine1, Keisha Bahr3, Zachary Quinlan1, Eleanor TenBrink3, Rayna McClintock1 and Nicholas J Hawco1, (1)University of Hawai'i at Mānoa, Oceanography, Honolulu, United States, (2)Hawai'i Institute of Marine Biology, Honolulu, United States, (3)Texas A&M University, Marine Biology, Corpus Christi, United States
 
Experimental Approaches for Testing Long-Term Biological Impacts of Continuous Large Scale Ocean Alkalinity Enhancement (2047292)
Debora Iglesias-Rodriguez, University of California Santa Barbara, Ecology, Evolution, and Marine Biology, Santa Barbara, United States
 
Novel environmental DNA tools for tracking the fate of kelp detritus shed from commercial coastal farms (2047383)
Robin Sleith1, Samuel Tan2, Kyle Oliveira3, Sarah Douglas1, Peter Craig1, Brittney Honisch1, David Emerson1, Jeremy Joel Rich4, Nicholas Record5, Peter D. Countway6 and Nichole Price1, (1)Bigelow Laboratory for Ocean Sciences, East Boothbay, United States, (2)University of Maine, School of Marine Sciences, Orono, United States, (3)Bigelow Lab for Ocean Sciences, Tandy Center for Ocean Forecasting, East Boothbay, United States, (4)University of Maine, School of Marine Sciences, Orono, ME, United States, (5)Bigelow Laboratory for Ocean Sciences, East Boothbay, Maine, United States, (6)Bigelow Laboratory for Ocean Sciences, East Boothbay, ME, United States
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