Ocean acidification

Controls on boron isotope ratios in marine bivalve shells: insights from a controlled experiment across pH and temperature gradients

Carolina Galdino — Fri, 08 May 2026 12:00:00 +0000

Documenting spatial and temporal patterns of ocean acidification and understanding the way marine organisms build carbonate skeletons is critical to assessing their potential vulnerability to present and future stressors. The boron isotopic composition (δ11Bc) of many marine carbonates provides insight into the pH at the site of calcification within biocalcifiers and, by extension, the pH […]

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Projected future of African marine ecosystems under climate change and stratospheric aerosol injection

Carolina Galdino — Fri, 08 May 2026 11:59:00 +0000

Stratospheric Aerosol Injection (SAI) has been proposed as a potential strategy to cool the planet. The ARISE-SAI-1.5 approach, which employes a moderate emission scenario, is simulated to limit future global warming to 1.5°C by injecting aerosols into the stratosphere in the year 2035. However, the climate response to this SAI scenario, particularly along the African […]

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Coupled ocean warming and acidification reduce shell integrity and bioenergetics in juvenile Mytilus coruscus

Carolina Galdino — Thu, 07 May 2026 12:00:00 +0000

Under realistic climate change scenarios, marine bivalves face compounding stressors from concurrent ocean warming and acidification. Research has established the separate effects of these factors; however, the synergy driving physiological adaptation in mollusks has yet to be fully elucidated. We assessed the physiological responses of an ecologically significant mussel, Mytilus coruscus, to 2 mo exposure under […]

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Ordovician sedimentary processes and related driving forces: Jordan, Arabian Plate

Carolina Galdino — Thu, 07 May 2026 11:59:00 +0000

The Ordovician-Lower Silurian siliciclastics deposited on the Jordanian Platform represent a transitional sedimentary system between their granitoid Gondwana source area and the Paleo-Tethys. While fluvial fining upward cycles (FUCs) of quartz arenite dominate braid plain deltas/upper shore face environments of the Lower Ordovician, arkosic tempestite and oxygen-deficient bituminous pelite/tuffite cycles cover upper/lower shore face environments […]

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Ocean acidification does not affect the trophic transfer of Ag, Co, and Zn in the cuttlefish Sepia officinalis

Carolina Galdino — Wed, 06 May 2026 12:00:00 +0000

Highlights Abstract Cephalopods are known to efficiently accumulate metals and may therefore play an important role in the trophic transfer of contaminants within marine food webs. However, the influence of environmental changes such as ocean acidification on trace element assimilation and retention in these organisms remains poorly understood. In the present study, the trophic transfer […]

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Effects of ocean acidification on radular tooth material properties in Littorina littorea (Gastropoda, Mollusca)

Carolina Galdino — Wed, 06 May 2026 11:59:00 +0000

Ocean acidification is known to affect calcified structures in marine organisms, yet its impact on non-calcified but functionally essential feeding tools remains poorly understood. The radula is a defining molluscan apomorphy, whose mechanical performance is critical for feeding and survival. Here we investigated the effects of reduced seawater pH on the radular teeth of the […]

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The influence of localized water quality on Eastern oysters (Crassostrea virginica) and their internal microbiome under changing environmental conditions

Carolina Galdino — Tue, 05 May 2026 12:00:00 +0000

Oysters are found ubiquitously in estuaries along the Georgia coast, where marsh morphology and large daily tidal fluctuations create dynamic and stressful conditions to which oysters may be locally adapted. Based on water quality data from the Sapelo Island National Estuarine Research Reserve, it is evident that changing climatic conditions are rapidly causing shifts in […]

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Evaluating the role of seaweed farming in ocean acidification mitigation: insights from high-frequency observations

Carolina Galdino — Tue, 05 May 2026 11:59:00 +0000

The oceanic uptake of anthropogenic CO2 has resulted in ocean acidification (OA). Macroalgae farming has the potential to mitigate OA by removing CO2 from the surface water via photosynthesis. However, continuous in-situ observations of marine carbonate chemistry related to macroalgae farming remain limited, leaving its effectiveness in addressing OA uncertain. To address these knowledge gaps, this study examined a […]

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Combined effects of ammonium and pH on sea urchin embryogenesis: insights for sediment quality assessment

Carolina Galdino — Thu, 30 Apr 2026 11:58:00 +0000

Highlights Abstract Ammonium is a key component of coastal marine systems, originating from both natural and anthropogenic sources, with possible toxic effects on marine organisms depending on the concentration and pH. This study evaluates, for the first time, the combined effects of ammonium and seawater acidification on early development of the sea urchin Paracentrotus lividus under both […]

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Acidification in coastal waters of Adélie Land, Antarctica (1985–2025)

Carolina Galdino — Wed, 29 Apr 2026 11:59:00 +0000

Ocean acidification is expected to be particularly severe in Antarctic continental shelves due to enhanced anthropogenic carbon uptake in cold waters in response to rising atmospheric CO2, sea-ice retreat, freshening and climate-change feedbacks. Models suggest that undersaturated conditions with respect to aragonite (Ωar), a major form of calcium carbonate formed by marine species, could be […]

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