Ocean acidification

Exploring the multiple functions of polyphenols in Mediterranean macroalgae: insights, gaps, and future directions from a systematic review

Carolina Galdino — Thu, 30 Jul 2026 12:00:00 +0000

Macroalgae are a cornucopia of bioactive molecules whose synthesis is modulated in response to environmental variables, allowing macroalgal adaptation and survival. Among these metabolites, polyphenols are worthy of attention because they may represent an informative archive of environmental conditions, given their involvement in several ecological and biochemical functions. This systematic review synthesized the literature from […]

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Interplay between nutrient limitation and ocean acidification: plankton community shifts in the oligotrophic western Bay of Bengal

Carolina Galdino — Thu, 30 Jul 2026 11:59:00 +0000

Highlights Abstract The perennial rise in atmospheric carbon dioxide (CO2) from anthropogenic activities increased oceanic carbon uptake, thereby lowering seawater pH. Rapid ocean acidification (OA) by 2 to 3 times than other regions of the same latitudinal belts was reported in the Bay of Bengal (BoB) due to the deposition of atmospheric pollutants, in addition […]

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Experimental evidence of climate change effects on plankton community respiration in European coastal waters: current insights and knowledge gaps in tested disturbances and studied areas

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

Plankton community respiration (PCR) plays a central role in aquatic ecosystems, driving the breakdown of organic matter and influencing global carbon cycling through its contribution to the production and consumption of carbon and oxygen. Coastal areas are regarded as metabolic hotspots in the oceans, due to their intense biological and biogeochemical activities. This review synthesizes […]

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NOAA sets sail on landmark West Coast Ocean Acidification survey

Carolina Galdino — Wed, 29 Jul 2026 11:58:00 +0000

NOAA’s West Coast Ocean Acidification survey is a long-running effort with previous missions like this one aboard the NOAA Ship Ronald H. Brown in 2021 seen near an ocean acidification monitoring mooring. Credit: NOAA Today, researchers set sail for a seventh West Coast Ocean Acidification (WCOA 2026) research mission. Departing from San Diego, CA aboard […]

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Applications open: Sixth International Symposium on the Ocean in a High-CO2 World

Carolina Galdino — Tue, 28 Jul 2026 08:20:00 +0000

The IAEA’s Ocean Acidification International Coordination Centre (OA-ICC) (https://www.iaea.org/ocean-acidification) is cooperating on the organization of this event and has limited funds at its disposal to help meet the costs of the attendance of selected participants from eligible IAEA Member States to present their work and foster international collaboration at the conference. The deadline to apply […]

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The effects of high carbonate alkalinity under low salinity on the survival, physiological metabolism, and redox homeostasis of Crassostrea hongkongensis

Carolina Galdino — Tue, 28 Jul 2026 08:19:00 +0000

High carbonate alkalinity can impose composite hydrochemical stress on bivalves by altering inorganic carbon speciation, buffering capacity and ion-exchange conditions. The Hong Kong oyster (Crassostrea hongkongensis) naturally inhabits estuarine areas where low salinity can occur together with carbonate-system disturbance, yet its physiological response to high carbonate alkalinity under a low-salinity background remains unclear. In this […]

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Warming and acidification alter essential fatty acid profiles in marine diatom Skeletonema marinoi

Carolina Galdino — Tue, 28 Jul 2026 08:18:00 +0000

Marine diatoms are key components of the planetary ocean, playing crucial roles in trophic networks: fixing carbon, producing fatty acids (FA) that cannot be synthesized de novo by higher trophic organisms. To better comprehend how the combined action of climatic change influences the dietary value and the impacts on the upper trophic levels, we used a 2 […]

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Multi-stressor responses in marine bivalves: integrating climate change, pollutants, and microbiome shifts for aquaculture resilience

Carolina Galdino — Mon, 27 Jul 2026 12:00:00 +0000

Marine bivalves play pivotal ecological and economic roles but are increasingly challenged by multiple environmental stressors. Although there is extensive research on the effects of individual stressors, a comprehensive review is needed to synthesize current evidence and clarify how multiple interacting stressors collectively affect the physiology and resilience of marine bivalves. This review integrates evidence […]

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pH–salinity-driven regulation in carbon utilization kinetics of the intertidal seagrass Zostera japonica along China’s coastline

Carolina Galdino — Mon, 27 Jul 2026 11:59:00 +0000

Highlights Abstract Seagrass carbon concentration mechanisms are modulated by seawater pH and salinity, yet their progressive regulation in photosynthetic inorganic carbon utilization pathways remain poorly characterized. This study novelly mathematically characterized first-order (pH change rate) and second-order (pH change acceleration) derivatives from pH-drift experiments in the intertidal seagrass Zostera japonica along China’s coastline. The pH change-based method […]

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Variation and influencing factors of water alkalinity in estuary-bay waters of Zhanjiang Bay, China

Carolina Galdino — Mon, 27 Jul 2026 11:58:00 +0000

This study investigated the spatial distribution, seasonal variation, and drivers of surface seawater alkalinity (Alk) in Zhanjiang Bay (ZJB) using high-frequency seasonal sampling in the summers and winters of 2023. Surface Alk ranged from 525.3 to 2213.3 μmol·L−1, with mean values of 1373.1 ± 420.9 μmol·L−1 (summer, n = 28) and 1612.3 ± 343.7 μmol·L−1 (winter, n = 20). Spatially, Alk […]

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