Ocean acidification

Parental CO₂-vent history does not improve larval performance of the sea urchin Arbacia lixula under copper and acidification

Carolina Galdino — Wed, 09 Sep 2026 12:00:00 +0000

CO₂-driven ocean acidification (OA) threatens marine calcifiers, while coastal ecosystems face increasing trace-metal contamination; their combined effects, and the modulating role of parental environmental history, remain poorly understood. We used the sea urchin Arbacia lixula from a naturally acidified CO₂ vent and a nearby ambient site at Ischia (Tyrrhenian Sea) to test how chronic adult exposure to […]

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The impact of ocean acidification on the sorption of trace metals by diatoms

Carolina Galdino — Wed, 09 Sep 2026 11:59:00 +0000

Diatoms are a major phytoplankton group that plays a critical role in aquatic biogeochemical processes. Their metabolism relies on trace metals as cofactors for numerous enzymes, and changes in seawater pH may therefore influence metal sorption. Here, we investigated the effects of pH variability on diatom growth and trace-metal sorption using neutron activation analysis (NAA). […]

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Ocean acidification drives species-specific and time-dependent pigment responses in three phytoplankton taxa

Carolina Galdino — Wed, 09 Sep 2026 11:58:00 +0000

Phytoplankton are primary producers in marine ecosystems and play a central role in biogeochemical cycles, yet their physiological responses to altered seawater pH vary among taxa and over time. Here, we examined the effects of sustained pH manipulation on pigment composition, growth, and dark respiration in three ecologically important phytoplankton taxa – a diatom (Pseudo-nitzschia spp.), a […]

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Elevated pCO2 impairs overall byssus attachment strength in the blue mussel (Mytilus edulis) without altering byssus thread quality

Carolina Galdino — Tue, 08 Sep 2026 12:00:00 +0000

Increasing atmospheric carbon dioxide (CO2) is driving global ocean acidification (OA). This process may threaten the persistence of bed-forming mussels by weakening the byssal system that anchors them to the seafloor. Here, blue mussels (Mytilus edulis) were exposed to present-day (∼460 ppm pCO2) normocapnic and projected end-century (∼1200 ppm pCO2) hypercapnic conditions for four weeks […]

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Shark responses to ocean acidification: physiological buffering, behavioural vulnerability, and comparative insights from teleost fishes

Carolina Galdino — Tue, 08 Sep 2026 11:59:00 +0000

Highlights Abstract Ocean acidification (OA), driven by increasing atmospheric carbon dioxide (CO₂), is a major component of global ocean change with widespread implications for marine organisms. Sharks (elasmobranchs) are often assumed to be relatively resilient to OA due to their distinctive physiology, including strong acid–base regulation and urea-based osmoconformation. However, empirical evidence evaluating this assumption […]

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High-resolution mapping of carbonate system parameters over coastal waters using integrated uncrewed aircraft systems (UAS) and Autonomous Surface Vessel (ASV) observations

Carolina Galdino — Mon, 07 Sep 2026 12:00:00 +0000

Coastal acidification, distinct from ocean acidification, is influenced by localized factors such as nutrient runoff, freshwater input, and decomposition. This study estimates carbonate system parameters in the Western Mississippi Sound (WMS) using integrated uncrewed aircraft systems (UAS) and autonomous surface vessel (ASV) observations. During 2018 to 2022, high-ressolution UAS imagery and in 2021 in situ ASV data […]

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Air–sea CO2 exchange in the Southern Adriatic Sea: assessing its role as a moderate carbon sink over the last decade (2015–2024)

Carolina Galdino — Mon, 07 Sep 2026 11:59:00 +0000

Coastal waters contribute significantly to the total oceanic carbon uptake. In this context, the cumulative influence exerted by marginal seas may be conspicuous. However sparse and unevenly distributed observations in such regions pose a serious limit to an accurate, experimentally based quantification of carbon dynamics. The Southern Adriatic (SAd) is one of the key sites […]

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Join Pier2Peer!

Carolina Galdino — Mon, 07 Sep 2026 11:58:00 +0000

Apply to Join Pier2Peer! Pier2Peer is an international mentorship program that pairs mentees who are new to ocean acidification work with experienced mentors in the field. The program aims to foster community among ocean acidification (OA) professionals, build long-term capacity to measure and address OA globally, and provide training opportunities to support careers in OA-related fields. […]

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Distributions and controls of carbonate parameters in offshore oil and gas fields of the Beibu Gulf and adjacent northern South China Sea (nSCS) shelf during the fall season

Carolina Galdino — Fri, 04 Sep 2026 12:00:00 +0000

Considering the strong seasonality in carbonate system parameters in coastal ecosystems, a comprehensive understanding of seasonal carbonate cycling is critically important for deploying scalable, nature-based negative emission technologies. Located in the northern South China Sea (nSCS), the Beibu Gulf is a semi-enclosed bay hydrodynamically connected to the nSCS shelf. Previous studies have documented carbonate dynamics […]

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Characterizing decision optimization strategies for managing climate change impacts on aquatic ecosystems and public health in Asia

Carolina Galdino — Fri, 04 Sep 2026 11:29:00 +0000

Climate change is dramatically reshaping the delicate balance of Asia’s freshwater and marine ecosystems, intensifying threats to biodiversity, water quality, and public health. This review explores the profound interconnections between climate change and aquatic environments, highlighting the escalating risks posed by rising temperatures, shifting precipitation patterns, and extreme weather events. The paper delves into the […]

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