Ocean acidification

Unravelling marine benthic functioning shifts under ocean acidification

cwitkowskiafe728feba — Fri, 10 Apr 2026 12:00:00 +0000

Ocean acidification (OA) driven by increasing atmospheric CO2 is altering marine biodiversity. However, impacts of OA on ecosystem functioning at the community level, including calcification, primary production and nutrient uptake, remain largely unknown. Here, we conducted community transplant experiments at natural CO2 vents to assess how declining pH affects marine community species composition, biomass, and key ecosystem […]

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Intracellular acid-base regulation mediates a trade-off between shell and somatic growth in a clam under ocean acidification

cwitkowskiafe728feba — Thu, 09 Apr 2026 12:00:00 +0000

Highlights SUMMARY Ocean acidification (OA) is predicted to threaten marine bivalves, casting them as passive victims of changing carbonate chemistry. Contributing to a revised understanding, we identified a conserved mechanism for acid-base regulation that supports intracellular resilience. Using the Manila clam Ruditapes philippinarum as a model, this study demonstrated that intracellular pH (pHi) homeostasis under elevated pCO2 was maintained […]

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Climate-driven restructuring of phytoplankton productivity and community composition in the south-eastern Black Sea: insights from seasonal CO2-temperature manipulation experiments

cwitkowskiafe728feba — Thu, 09 Apr 2026 11:59:00 +0000

Semi-enclosed marine systems with low buffering capacity, such as the Black Sea, are expected to experience amplified impacts of ocean acidification and warming, yet experimental evidence on their combined short-term effects on natural phytoplankton assemblages remains limited. Here, we present a seasonally resolved one-year study (four experiments conducted between 2022 and 2023) based on 48 h […]

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Responses of reef fish populations to similar environmental changes across distant oceanic islands

cwitkowskiafe728feba — Thu, 09 Apr 2026 11:58:00 +0000

Oceanic islands are among the most remote and understudied regions of the planet, yet they harbour unique reef fish communities that are increasingly vulnerable to global environmental change. Because these islands are geographically isolated, their populations are often assumed to respond mainly to local environmental conditions. However, by analysing temporal patterns in oceanographic variables across […]

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An interpretable machine learning approach for alkalinity reconstruction in the Mediterranean Sea

cwitkowskiafe728feba — Thu, 09 Apr 2026 11:57:00 +0000

Highlights Abstract Ocean acidification has significant impacts on marine ecosystems and human activities, and its understanding relies on an accurate characterization of the marine carbonate system, in which alkalinity plays a central role. We propose a Machine Learning (ML) approach based on Genetic Programming (GP) to model alkalinity and apply this framework to the surface […]

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Climate change influence on salinity, temperature, dissolved oxygen and pH in Biscayne Bay (Florida): two decades of observations (2001–2021)

cwitkowskiafe728feba — Wed, 08 Apr 2026 12:00:00 +0000

Highlights Abstract An evaluation of 20 years (2001-2021) of monthly data from a long-term monitoring program was performed to determine the temporal, seasonal and spatial changes in the distribution of salinity, temperature, dissolved oxygen, and pH, to identify the potential impacts of climate change on Biscayne Bay, the largest estuary on the Atlantic coast of […]

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Ocean acidification: the silent threat to marine biodiversity

cwitkowskiafe728feba — Wed, 08 Apr 2026 11:59:00 +0000

Ocean acidification (OA) is one of the quietest yet most profound changes unfolding in our seas. Caused mainly by the ocean’s absorption of excess carbon dioxide from the atmosphere, it steadily lowers seawater pH and depletes carbonate ions — the essential building blocks for shells, skeletons, and coral reefs. These chemical shifts ripple through marine […]

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Effects of upwelling-driven acidification and deoxygenation on the dissolved inorganic carbon system over the southeastern Arabian Sea shelf

cwitkowskiafe728feba — Wed, 08 Apr 2026 11:58:00 +0000

Highlights Abstract Repeated measurements of inorganic carbon system parameters over one year along two coastal transects (Kochi in the southern EAS and Mangalore in the central EAS) in the eastern Arabian Sea (EAS) reveal strong seasonal coupling between upwelling, deoxygenation, acidification, and inorganic carbon accumulation on the shelf. During the non-upwelling (oxic) period, the variability […]

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Investigation of the adaptive mechanisms to ocean acidification in Patella species from CO2 vent systems of the Mediterranean Sea

cwitkowskiafe728feba — Tue, 07 Apr 2026 12:00:00 +0000

The continuous increase in anthropogenic carbon dioxide (CO2) emissions into the atmosphere is one of the main factors contributing to ocean acidification (OA). In fact, CO2 is partially absorbed by the oceans, where it alters carbonate chemistry and seawater pH, which is expected to decrease from the current level of 8.1 to 7.7 by 2100. […]

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The impact of climate change on lobster production: a systematic synthesis of literature

cwitkowskiafe728feba — Mon, 06 Apr 2026 12:00:00 +0000

Climatic impact-drivers are projected to change in coastal and marine regions globally, especially towards the fisheries production of the commercially important global shellfish, such as lobster species. Thus, there is an immediate need for ongoing, rigorous systematic review that continuously assesses and analyzes the risk of climatic factors towards lobsters’ production (i.e., growth, reproduction, etc.). […]

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