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L’invitée du mercredi : Nathalie Hilmi (video; in French)

Nathalie Hilmi, Docteure en Sciences Economiques au Centre Scientifique de Monaco revient sur les différents workshops organisés au Musée Océanographique. Le thème principal de ces rendez-vous concerne l’acidification des océans et l’impact qu’ont les humains sur ces derniers. Monaco Info, 19 October 2017. Video.Filed under: Media coverage

Quatrième workshop international sur l’acidification des oceans (video; in French)

Les activités humaines produisent du dioxyde de carbone qui ne reste pas nécessairement dans l’atmosphère. En effet, une partie se dissout dans le milieu aquatique. Cette dissolution produit un acide qui diminue le pH de l’eau de mer et ce phénomène doit être la préoccupation de tous. Ce quatrième workshop au Musée océanographique est organisé […]

4ème workshop international sur l’acidification des océans : restitution des conclusions (in French)

Après trois jours d’échanges fructueux se tenait, mardi 17 octobre dernier, la restitution des conclusions du 4ème workshop international sur l’acidification des Océans, en présence, notamment, de S.A.S. le Prince Souverain.  L’événement...Show More Summary

New sensors continuously monitor Kachemak Bay’s acidification

Fairbanks, Alaska (KINY) Scientists now have five new sensors that will continuously monitor ocean acidification conditions in Alaska’s Kachemak Bay. The sensors, installed in September, allow researchers from University of Alaska Fairbanks, Kachemak Bay Research Reserve and Kasitsna Bay Laboratory to collect a range of environmental data. Show More Summary

Cousteau Divers Mini 5: Boiling Ocean (video)

  Beneath the calm surface, in Papua New Guinea, a sunken volcano releases pure CO2 bubbles, acidifying the seawater at a pH level expected for the end of this century. The filmmaker Pierre-Yves Cousteau joins the scientific team CARIOCA: “Coral reef acclimatization to ocean acidification at CO2 seeps” in Papua New Guinea. In a previous cruise, […]

Agriculture production as a major driver of the Earth system exceeding planetary boundaries

We explore the role of agriculture in destabilizing the Earth system at the planetary scale, through examining nine planetary boundaries, or “safe limits”: land-system change, freshwater use, biogeochemical flows, biosphere integrity,...Show More Summary

Fluctuating seawater pH/pCO2 regimes are more energetically expensive than static pH/pCO2 levels in the mussel Mytilus edulis

Ocean acidification (OA) studies typically use stable open-ocean pH or CO2 values. However, species living within dynamic coastal environments can naturally experience wide fluctuations in abiotic factors, suggesting their responses to stable pH conditions may not be reflective of either present or near-future conditions. Show More Summary

Research Assistant – Ocean Acidification & Biogeochemistry, Ryan Institute, College of Science, NUI Galway

Closing date: 31 October 2017 Applications are invited from suitably qualified candidates for a full time, fixed term position as a Research Assistant with the Ryan Institute at the National University of Ireland, Galway. This position is funded by the Marine Institute and is for 2 years. The Ryan Institute is the National University of […]

Ship emissions and the use of current air cleaning technology: contributions to air pollution and acidification in the Baltic Sea

The shipping sector is a significant contributor to emissions of air pollutants in marine and coastal regions. In order to achieve sustainable shipping, primarily through new regulations and techniques, greater knowledge of dispersion and deposition of air pollutants is required. Show More Summary

Quantifying the genetic capacity of California grunion (Leuresthes tenuis) to adapt to ocean acidification

Ocean acidification can reduce survival and growth of marine larvae. However, if populations have the genetic capacity to adapt and increase their tolerance to low pH levels, then such genetic changes may offset the harmful effects of ocean acidification. I used methods in quantitative genetics to measure the genetic variance and project the potential rate […]

Ocean warming and acidification alter Antarctic macroalgal biochemical composition but not amphipod grazer feeding preferences

Increased anthropogenic atmospheric CO2 concentrations have resulted in ocean warming and alterations in ocean carbonate chemistry, decreasing seawater pH (ocean acidification). The combination of ocean warming and acidification (OWA) may alter trophic interactions in marine benthic communities along the western Antarctic Peninsula (WAP). Show More Summary

Deal signed to advance fight against ocean acidification

 The Secretariat of the Pacific Regional Environment Programme (S.P.R.E.P) and The Ocean Foundation (T.O.F) have signed a Memorandum Of Understanding to commit to co-host three workshops on ocean acidification to benefit 10 Pacific Islands. The signing took place at the “Our Ocean Conference” in Malta. S.P.R.E.P and TOF have mutual interests in relation to the […]

Acidifying oceans a bad trip for marine ecosystems

A more acidic ocean under climate change threatens to reconfigure entire ecosystems by advantaging some fish species to the detriment of others, a new study has found. The research is one of only a few that go beyond the lab to study how species interactions are changing in nature under more extreme conditions. Researchers from […]

Exposure to elevated pCO2 does not exacerbate reproductive suppression of Aurelia aurita jellyfish polyps in low oxygen environments

Eutrophication-induced hypoxia is one of the primary anthropogenic threats to coastal ecosystems. Under hypoxic conditions, a deficit of O2 and a surplus of CO2 will concurrently decrease pH, yet studies of hypoxia have seldom considered the potential interactions with elevated pCO2 (reduced pH). Show More Summary

Acoustic signal and noise changes in the Beaufort Sea Pacific Water duct under anticipated future acidification of Arctic Ocean waters

It is predicted that Arctic Ocean acidity will increase during the next century as a result of carbon dioxide accumulation in the atmosphere and migration into ocean waters. This change has implications for sound transmission because low-pH seawater absorbs less sound than high-pH water. Altered pH will affect sound in the 0.3?10?kHz range if the […]

Calcification in a marginal sea – influence of seawater [Ca2+] and carbonate chemistry on bivalve shell formation

In estuarine coastal systems such as the Baltic Sea, mussels suffer from low salinity which limits their distribution. Anthropogenic climate change is expected to cause further desalination which will lead to local extinctions of mussels in the low saline areas. It is commonly accepted that mussel distribution is limited by osmotic stress. However, along the […]

10-15-17 The Whales Came In and They Ate!

Sunday, October 15, 2017...a sunshiny morning, no clouds for the day...by noon there were whales coming up island!...what a surprise and it was J Pod too!...and the L54s and Nyssa L-84 and Wave Walker L-88 had come in with J Pod and Onyx L-87. Show More Summary

Fourth WESTPAC Workshop on Research and Monitoring of the Ecological Impacts of Ocean Acidification on Coral Reef Ecosystems, Phuket, Thailand

The Fourth WESTPAC Workshop on Research and Monitoring of the Ecological Impacts of Ocean Acidification on Coral Reef Ecosystems will take place in Phuket, Thailand, on 14–15 December 2017. Hosted by the Phuket Marine Biological Center, this workshop is being planned as a follow-up to the previous three workshops (19-21 January 2015, 26-28 August 2015 […]

Impacts of near-future ocean acidification and warming on the shell mechanical and geochemical properties of gastropods from intertidal to subtidal zones

Many marine organisms produce calcareous shells as the key structure for defence, but the functionality of shells may be compromised by ocean acidification and warming. Nevertheless, calcifying organisms may adaptively modify their shell properties in response to these impacts. Show More Summary

Effects of in situ CO2 enrichment on epibiont settlement on artificial substrata within a Posidonia oceanica meadow

Highlights Ocean acidification (OA) may cause community shifts by effecting early life stages. pH was lowered in situ and maintained as an offset within a FOCE setup. Settlement/colonization of molluscs and peracarid crustaceans were robust to OA. Show More Summary

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