Welcome to the Global Ocean Oxygen Network (GO₂NE) webinar series archive, a regular online seminar series that focuses on the depletion of oxygen in the marine environment – ocean deoxygenation. Organised and hosted by IOC/UNESCO, each one-hour webinar is run by a guest moderator and two invited speakers. To support the diversity of the scientific community, the webinar series aims for an equal balance of early-career and senior scientists, gender, and geographical representation.

Moderation: 
Jeremy Sterling
Ocean Science Section, IOC-UNESCO

Speaker:
Simone Moretti
Max Planck Institute for Chemistry, Germany
"The future in the past? Studying past ocean oxygen using nitrogen isotopes and body size of fossil foraminifera" 

You can watch the GO₂NE Webinar 11 July 2024 No 30 recording here.  

"The 29th Global Ocean Oxygen Network (IOC Expert Working Group GO2NE) webinar was a special session of its series on ocean deoxygenation to mark World Oceans Day 2024.
The webinar took place on 12 June 2024, 1500 CEST. It featured presentations by GO2NE Co-Chairs Andreas Oschlies and Caroline Slomp, and expert working group member Karin Limburg, speaking on the latest global scientific efforts to understand, mitigate and adapt to ocean deoxygenation, and the most recent work of GO2NE and its members."

Speakers:
Andreas Oschlies (GEOMAR, Germany)
Caroline Slomp (Radboud University, The Netherlands)
Karin Limburg (SUNY College of Environmental Science and Forestry, USA)

You can watch the GO₂NE Webinar 12 June 2024 No 29 recording here.  

Moderation: 
Aileen Tan Shau Hwai
Centre For Marine & Coastal Studies, Unversiti Sains Malaysia, Malaysia

Speakers:
Tom Hull
Centre for Environment Fisheries and Aquaculture Science (CEFAS), United Kingdom
"Observing ocean oxygen in UK shelf seas"

Monaliza Mohd-Din
Marine Science Program, Faculty of Science and Marine Environment, Universiti Malaysia Terengganu, Malaysia
"High biomass diatom blooms induced the formation of hypoxic-anoxic zones in the inner part of Johor Strait"

You can watch the GO₂NE Webinar 03 April 2024 No 28 recording here.  

Moderation: 
Natalya Gallo
University of Bergen and Bjerknes Centre for Climate Research, Norway

Speakers:
Martine Røysted Solås
University of Bergen and Bjerknes Centre for Climate Research, Norway
"Vertical distribution of mesopelagic scattering layers under different oxygen conditions: Insights from a western Norwegian fjord"

Carl Reddin
GeoZentrum Nordbayern, Germany - Paleobiology, and Integrative Ecophysiology at AWI, Germany
"Warming-associated deoxygenation as a driver of marine extinction? The deep past and near future"

You can watch the GO₂NE Webinar 21 February 2024 No 27 recording here.  

Moderation: 
Minhan Dai
Xiamen University, China

Speakers:
Yawei Shen
Xiamen University, China
"Will it be possible to shape the hypoxia tolerance of marine animals? A case study in aquaculture abalone"

Folco Giomi
Independent researcher, Italy
"Marine life on stage. A focus on oxygen availability to the scale of relevant players"

You can watch the GO₂NE Webinar 29 January 2024 No 26 recording here.  

Moderator:
Caroline Slomp
Radboud University / Utrecht University

Speakers:
Darci Rush
Royal NIOZ, The Netherlands
"Tracing past marine anoxia using lipid biomarkers"

Jannes Koelling
University of Washington, USA
"On the decadal variability of oxygen uptake, export, and storage in the Labrador Sea"

You can watch the GO₂NE Webinar 18 December 2023 No 25 recording here. 

Moderator:
Natalya Gallo
University of Bergen and Bjerknes Centre for Climate Research, Norway

Speakers:
Xabier Davila Rodriguez
NORCE Norwegian Research Centre, Norway
"On the Origins of Open Ocean Oxygen Minimum Zones"

Yassir Eddebbar
Scripps Institution of Oceanography, University of California San Diego, USA
"Oxygen supply in the tropical Pacific: A role for turbulence and mesoscale eddies"

You can watch the GO₂NE Webinar 20 November 2023 No 24 recording here.  

Moderator:
Dimitri Gutierrez
Instituto del Mar del Perú (IMARPE), Peru

Speakers:
Montserrat Aldunate
Universidad de Concepción, Chile
"Effect of the oxygen minimum zone on eukaryotic and prokaryotic phytoplankton of the Eastern Tropical North and South Pacific Ocean"

Michelle Graco
Instituto del Mar del Perú (IMARPE), Peru
"A Long-term Marine-coastal Observatory of low oxygen and acidification in the upwelling system off Peru"

You can watch the GO₂NE Webinar 11 October 2023 No 23 recording here. 

Moderator:
Lisa Levin
Scripps Institution of Oceanography, UC San Diego, USA

Speakers:
Natalya Gallo
University of Bergen and Bjerknes Centre for Climate Research, Norway
"Trophic impacts of ocean deoxygenation: Disruption of bentho-pelagic coupling in oxygen minimum zone regions"

Anne Gro Vea Salvanes
University of Bergen, Norway
"The bearded goby (Sufflogobius bibarbatus): a hypoxia-tolerant little fish member of the Namibian Benguela Ecosystem"

You can watch the GO₂NE Webinar 13 September 2023 No 22 recording here. 

Moderator:
Damodar Shenoy
CSIR-National Institute of Oceanography, Goa, India

Speakers:
Sudheesh Valliyodan
Central University of Kerala, India
"Oxygen Minimum Zone dynamics of eastern Arabian Sea"

Zouhair Lachkar
New York University Abu Dhabi, United Arab Emirates
"Recent and future trends in the Arabian Sea oxygen minimum zone: processes and uncertainties"

You can watch the GO₂NE Webinar 26 July 2023 No 21 recording here. 

Moderator:
Andreas Oschlies
GEOMAR Helmholtz Centre for Ocean Research Kiel, Germany

Speakers:
Patricia Handmann
Lhyfe, France
"Potential Environmental Services of Offshore Hydrogen Production - Ocean Reoxygenation" 

Bo Gustafsson 
Stockholm University Baltic Sea Centre, Sweden
"Mitigation of eutrophication and oxygen depletion in the Baltic Sea; challenges for science and management"

You can watch the GO₂NE Webinar 19 June 2023 No 20 recording here. 

Moderator:
Andreas Oschlies
GEOMAR Helmholtz Centre for Ocean Research Kiel, Germany

Speakers:
Javier Arístegui
Instituto de Oceanografía y Cambio Global, Universidad de Las Palmas de Gran Canaria, Spain
"Estimating dark-ocean respiration through ETS activity"

Haichao Guo
GEOMAR Helmholtz Centre for Ocean Research Kiel, Germany
"Can oxygen utilization rates track the long-term trend of mesopelagic respiration"

You can watch the GO₂NE Webinar 21 March 2023 No 19 recording here. 

Moderator:
Sean Crowe
Departments of Microbiology and Immunology, and Earth, Ocean, and Atmospheric Sciences, The University of British Columbia, Canada

Speakers:
Kohen Bauer
Ocean Networks Canada, University of Victoria, British Columbia, Canada
"Ocean anoxia in deep time: Multiple episodes of rapid ocean deoxygenation during the Cretaceous"

Daniel Mills
Department of Earth and Environmental Sciences, Paleontology & Geobiology, Ludwig-Maximilians-Universität München, Munich, Germany
"The control of dissolved O₂ on the diversity of microbial eukaryotes over geologic time"

You can watch the GO₂NE Webinar 8 February 2023 No 18 recording here. 

Moderator:
Gil Jacinto
Marine Science Institute, University of the Philippines Diliman, Philippines

Speakers:
Lara Sotto
Marine Science Institute, University of the Philippines Diliman, Philippines
"Hypoxia in Manila Bay: Insights from Fieldwork, Nutrient Load and Hydrodynamic Modeling"

Aileen Tan Shau Hwai 
Centre For Marine & Coastal Studies, Universiti Sains Malaysia, Malaysia
"Fish Kills in Malaysia"

You can watch the GO₂NE Webinar 8 December 2022 No 17 recording here. 

Moderator:
Grant Pitcher
Department of Forestry, Fisheries and the Environment, South Africa

Speakers:
Annette Carlson
University of Connecticut, USA
"Assessing drivers of oxygen dynamics in the southern Benguela Upwelling System through the combined application of models and observations"

Bronwyn Currie
Namibian Ministry of Fisheries and Marine Resources, Namibia
"Oxygen calls the shots in the Northern Benguela Upwelling System off Namibia"

You can watch the GO₂NE Webinar 20 October 2022 No 16 recording here. 

Moderator:
Jodie Rummer
James Cook University, Australia

Speakers:
Ariel Pezner
Scripps Institution of Oceanography, University of California San Diego, USA
"Coral reef hypoxia: Present-day exposure and projections under warming"

David Suggett
University of Technology Sydney, Australia
"Unlocking the vulnerability of reef-forming corals to deoxygenation"

You can watch the GO₂NE Webinar 23 August 2022 No 15 recording here. 

Moderator:
Moriaki Yasuhara
The University of Hong Kong

Speakers:
Huai-Hsuan May Huang
National Museum of Natural History, Smithsonian Institution, USA
"Reconstructing biotic responses to deoxygenation in the geological past based on microfossils"

Curtis Deutsch
Princeton University, USA
"Metabolic Index predicts the Temperature Size Rule"

You can watch the GO₂NE Webinar 13 July 2022 No 14 recording here. 

Moderator:
Guizhi Wang 
Xiamen University, China

Speakers:
Yangyang Zhao
Xiamen University, China
"Interactive hypoxia-acidification in coastal waters responds to ocean warming"

Esther Portela 
University of Tasmania, Australia
"Physical mechanisms driving oxygen uptake by the ocean interior"

You can watch the GO₂NE Webinar 21 June 2022 No 13 recording here. 

Moderator:
Boris Dewitte
CEAZA, Chile

Speakers:
Alexandra Parouffe
LEGOS, France
"Future habitability of the South East Pacific in a changing environment"

Andrew Babbin
Massachusetts Institute of Technology, USA
"A High-Resolution Atlas of the Eastern Tropical Pacific Oxygen Deficient Zones"

You can watch the GO₂NE Webinar 30 March 2022 No 12 recording here. 

Moderator:
Kirsten Isensee
IOC-UNESCO

Speakers:
Andreas Oschlies
GEOMAR Helmholtz Centre for Ocean Research Kiel, Germany
Marilaure Grégoire
University of Liège, Belgium
"Introduction and overview on GOOD by co-chairs GO2NE"

Marilaure Grégoire
University of Liège, Belgium
Véronique Garçon
Legos, France
"Assessing and predicting deoxygenation and ocean health in the open and coastal ocean"

Minhan Dai
Xiamen University, China
"Coastal hypoxia, COASTAL -SOS"

Karin Limburg
State University of New York College of Environmental Science & Forestry, USA and Department of Aquatic Resources, Swedish Agricultural University
"Project Breathless"

You can watch the GO₂NE Webinar 11 March 2022 No 11 recording here.

Moderator:
Caroline Slomp
Utrecht University, The Netherlands

Speakers:
Niels van Helmond
Utrecht University, The Netherlands
"Sedimentary trace metals: a powerful indicator for bottom water redox conditions"

Laura Bristow
University of Southern Denmark
"Nitrogen cycling in anoxic waters: oxygen contamination and the need for in situ measurement"

You can watch the GO₂NE Webinar 26 January 2022 No 10 recording here.

Moderator:
Dimitri Gutierrez Aguilar
Instituto del Mar del Perú

Speakers:
Dante Espinoza-Morriberon
Instituto del Mar del Perú
"Numerical modelling of oxygen variability and deoxygenation trends in the Southeastern Pacific"

Renato Salvattec
 Kiel University, Germany
"Paleoceanographic evidence for smaller fish species in a warm and oxygen-poor ocean"

You can watch the GO₂NE Webinar 23 September 2021 No 9 recording here.

Moderator:
Jodie Rummer
College of Science and Engineering, James Cook University & ARC Centre of Excellence for Coral Reef Studies, Australia

Speakers:
Sarah Wolf
Department of Microbiology, Oregon State University, USA
"A microbe's point of view: coastal ocean deoxygenation" 

David Sims
Marine Biological Association Laboratory (MBA), Plymouth, & University of Southampton, NOCS, UK
"Caught in the middle? Ocean deoxygenation and longline fishing effects on pelagic sharks"

You can watch the GO₂NE Webinar 28 April 2021 No 6 recording here.

Moderator:
Lisa Levin
Integrative Oceanography Division Scripps Institution of Oceanography, University of California, San Diego, USA

Speakers:
Lillian McCormick
Integrative Oceanography Division Scripps Institution of Oceanography, University of California, San Diego, USA
"The blinding truth: vision is highly sensitive to oxygen loss in the ocean"

Karin E. Limburg
State University of New York College of Environmental Science & Forestry, USA and Department of Aquatic Resources, Swedish Agricultural University

Liz LoGiudice
Resilience Communications and Consulting, LLC, USA
"The sound of hypoxia: Turning cod otolith data into sound and song with data sonification"

You can watch the GO₂NE Webinar 17 March 2021 No 5 recording here.

Moderator:
Prof. Marilaure Grégoire
University of Liège, Belgium

Speakers:
Dr. Wenfei Ni
University of Maryland, USA
"Understanding the Long-Term Change of Chesapeake Bay Hypoxia: Impacts of Nutrient Management and Climate Change"

Prof. Daniel Conley
Lund University, Sweden
"Baltic Sea Hypoxia Takes Many Shapes and Sizes"

You can watch the GO₂NE Webinar 17 February 2021 No 4 recording here.

Moderator:
Veronique Garçon
Legos, France

Speakers:
Dr. Laura Ramajo
Centro de Estudios Avanzados en Zonas Aridas (CEAZA), Chile
"The multi-stressor scenario of upwelling and their impacts on the Chilean scallop aquaculture"

Christopher J. Gobler, Ph.D.
Stony Brook University, USA
"Co-occurrence of hypoxia, harmful algal blooms, and other climate change stressors: Implications for aquatic life"

You can watch the GO₂NE Webinar 20 January 2021 No 3 recording here.

Moderator:
Prof. Andreas Oschlies
GEOMAR Helmholtz Centre for Ocean Research Kiel, Germany

Speakers:
Dr. Sören Thomsen
LOCEAN-IPSL, CNRS, Paris, France
"How fine-scale physical processes shape the oxycline off Peru"

Prof. Laure Resplandy
Princeton University, USA
"Will oxygen minimum zones expand or shrink? The crucial contributions of ocean mixing and biogeochemical feedbacks"

You can watch the GO₂NE Webinar 9 December 2020 No 2 recording here.

Moderator:
Prof. Michael Roman
University of Maryland Center for Environmental Science, USA

Speakers:
Dr. Alexandra Steckbauer
King Abdullah University of Science and Technology, Kingdom of Saudi Arabia
"Defining O₂ and CO₂ syndromes in the ocean and how deoxygenation and acidification impact marine biota"

Prof. Karen Wishner
University of Rhode Island, USA
"Deoxygenation and zooplankton: distributional strategies and oxygen minimum zone variability"

You can watch the GO₂NE Webinar 11 November 2020 No 1 recording here.