Latest Events

A landmark event endorsed by the Belgian presidency of the Council of the European Union, the Strategic Navigation Forum is set to convene on 11 June in Brussels. This high-level...
Join us virtually for a livestreamed event on Arctic cooperation between the European Union and the United States. Our invited experts will discuss the global importance of Arctic science and...
Date and time: 11 April 2024, 13:15 – 14:45  Location: Atlantic Ocean Room (Area 06), Barcelona International Convention Centre (CCIB)  This satellite event will bring together All-Atlantic Ocean Research and...
Date and time: 8 April 2024, 17:00-18:30  Location: Auditorium, Parc de Recerca Biomèdica de Barcelona (PRBB)  The panel will convene a diverse array of stakeholders, such as scientists, civil society,...
53RD INTERNATIONAL COLLOQUIUM ON OCEAN DYNAMICS

53RD INTERNATIONAL COLLOQUIUM ON OCEAN DYNAMICS

Event date: 16-20 MAY 2022

Oxygen (O2) is considered an effective indicator of ocean health and climate change. Its level, distribution and variability from sub-seasonal to multidecadal scales provides relevant information on the physical and biogeochemical functioning of the ocean, and often acts to constrain life in the ocean.

Current evidence indicates that the coastal (i.e., most directly influenced by land) and open ocean areas have been losing O2 since the middle of the last century, with consequences for living organisms and biogeochemical cycles that are not yet fully understood. In the open ocean the O2 inventory has decreased by a few percent (i.e., 0.5-3%) and Oxygen Minimum Zones (OMZs) are expanding, which is primarily attributed to global warming although a quantitative understanding is still lacking. The number of hypoxic coastal sites has increased, predominantly in response to worldwide eutrophication; yet trends in deoxygenation in the global coastal zone remain ill-defined.

The development and extension of low O2 concentration areas degrades the living conditions and contracts the metabolically viable habitat for a large number of pelagic, mesopelagic, and benthic organisms. The effects on individuals exposed to low O2 can result in altered foodweb structures.

Deoxygenation affects many aspects of the ecosystem services provided by the ocean and coastal waters. For example, deoxygenation effects on fisheries include low oxygen affecting populations through reduced recruitment and population abundance, and also through altered spatial distributions of the harvested species causing changes in fishing activity. This can lead to changes in the profitability of the fisheries and can affect the interpretation of the monitoring data leading to misinformed management advice.

Model simulations for this century project a decrease in oxygen under both high and low CO2 emission scenarios, while the projections of the coastal ocean at the land-ocean interface indicate that eutrophication will likely continue in many regions of the world. Warming is expected to further amplify deoxygenation in coastal areas influenced by eutrophication by strengthening and extending stratification.

The 53rd Liege colloquium will investigate new developments and insights related to deoxygenation in open and coastal waters.

The colloquium is  organized by the IOC-UNESCO Global Ocean Oxygen Network (GO2NE) and is a contribution to the Global Ocean Oxygen Decade (GOOD) program of the UN Ocean Decade. 

More specifically, the following topics will be considered:

  • Deoxygenation: understanding causes and attributing changes.
    Conveners: Ivonne Montes, Andreas Oschlies
  • Assessing open ocean and coastal deoxygenation variability and trends.
    Conveners: Hernan Garcia, Francisco Chavez
  • Deoxygenation: observing and modelling
    Conveners: Véronique Garçon, Marilaure Grégoire
  • Deoxygenation and ocean life
    Conveners: Mike Roman, Denise Breitburg
  • Deoxygenation and co-stressors: understanding, monitoring and mitigating deoxygenation in the context of multiple stressors
    Conveners: Grant Pitcher, Minhan Dai
  • Ocean Deoxygenation – how the past can inform the future?
    Conveners: Moriaki Yasuhara, Dimitri Guiterez
  • Microbial Communities and their controls on biogeochemical feedbacks and interactions
    Conveners: Sean Crowe, Fleur Roland
  • Deoxygenation, water quality and the climate system: understanding processes and feedbacks and developing actionable indicators
    Conveners: Caroline Slomp, Nancy Rabalais
  • Deoxygenation: ecosystem services, economic and societal consequences.
    Conveners: Karin Limburg, Rashid Sumaila
  • Confronting deoxygenation and its impacts: translating science to management and policy
    Conveners: Lisa Levin, Kirsten Isensee, Dorina Seitaj

 

More info HERE.

Share: