Blog Profile / Ocean Acidification

Filed Under:Biology / Marine Biology
Posts on Regator:6757
Posts / Week:19.2
Archived Since:July 23, 2010

Blog Post Archive

A carbonic anhydrase serves as an important acid-base regulator in Pacific oyster Crassostrea gigas exposed to elevated CO2: implication for physiological responses of mollusk to ocean acidification

Carbonic anhydrases (CAs) have been demonstrated to play an important role in acid-base regulation in vertebrates. However, the classification and modulatory function of CAs in marine invertebrates, especially their responses to ocean acidification remain largely unknown. Show More Summary

Human dimensions of environmental change in small island developing states: some common themes

Climate change and its consequence of sea level rise are major issues for small island developing states (SIDS), as they worsen many other pressures on their people and their environment. Accordingly, articles in this special issue of Regional Environmental Change on SIDS address research gaps in the following thematic areas of the human dimensions of climate change. […]

Calcareous nannoplankton response to the latest Cenomanian Oceanic Anoxic Event 2 perturbation

Morphometric analyses were performed on Biscutum constans, Zeugrhabdotus erectus, Discorhabdus rotatorius and Watznaueria barnesiae specimens from five sections spanning the Cenomanian-Turonian boundary interval including Oceanic Anoxic Event (OAE) 2 (~ 94 Ma). Show More Summary

Elevated temperature has adverse effects on GABA-mediated avoidance behaviour to sediment acidification in a wide-ranging marine bivalve

Sediment acidification is known to influence the burrowing behaviour of juvenile marine bivalves. Unlike the alteration of behaviour by ocean acidification (OA) observed in many marine organisms, this burrowing response to present-day...Show More Summary

Achieving accurate spectrophotometric pH measurements using unpurified meta-cresol purple

For best accuracy, spectrophotometric characterizations of seawater pH are obtained using a purified pH-sensitive dye—usually meta-cresol purple (mCP) for typical ranges of seawater pH. In recognition of practical limitations, though, a straightforward method is here proposed to improve measurements made using unpurified mCP. Show More Summary

Lower Nehalem Watershed Council Speaker Series: Ocean Acidification, 11 May 2017

Date & Location: 11 May 2017, Pine Grove Community House (225 Laneda Ave, Manzanita) Ocean acidification is a global challenge to the sustainability of marine ecosystems. It is a major water quality issue linked to the reduction of shell material in our coastal waters and the mortality of shell forming marine life worldwide. Oregon has emerged […]

Large-scale seaweed cultivation diverges water and sediment microbial communities in the coast of Nan’ao Island, South China Sea

Seaweed cultivation not only provides economy benefits, but also remediates the environment contaminated by mariculture of animals (e.g., fish, shrimps). However, the response of microbial communities to seaweed cultivation is poorly understood. Show More Summary

Effects of elevated CO? on speckled sanddab (Citharichthys stigmaeus) behaviour

The direct and indirect effects of ocean acidification (OA) are a growing concern, particularly in areas already experiencing elevated levels of oceanic CO?. Studies with marine fishes suggest that elevated CO? levels may affect behavior by interfering with an important brain neurotransmitter. Show More Summary

Inorganic carbon physiology underpins macroalgal responses to elevated CO2

Beneficial effects of CO2 on photosynthetic organisms will be a key driver of ecosystem change under ocean acidification. Predicting the responses of macroalgal species to ocean acidification is complex, but we demonstrate that the response of assemblages to elevated CO2 are correlated with inorganic carbon physiology. Show More Summary

Sea creature dissolves fast in warm, acidic ocean

Marine animals that live in warm as well as acidic oceans are dissolving quickly under conditions at the Northern California coast, says a study from the University of California, Davis. This applies especially to the bryozoans. Scientists published their study in the journal Proceedings of the Royal Society B: Biological Sciences. Researchers from the UC […]

Effect of pH on temperature controlled degradation of reactive oxygen species, heat shock protein expression, and mucosal immunity in the sea cucumber Isostichopus badionotus

This study evaluated the effect of pH on the activity of antioxidant and immune enzymes in the sea cucumber Isostichopus badionotus exposed to different temperatures. The organisms (530 ±110 g) were exposed to 16, 20, 24, 28, 30, 34 and 36°C for 6 h to evaluate thermal limits at two water pH values (treatment = […]

Effects of elevated nutrients and CO2 emission scenarios on three coral reef macroalgae

Coral reef macroalgae are expected to thrive in the future under conditions that are deleterious to the health of reef-building corals. Here we examined how macroalgae would be affected by exposure to future CO2 emission scenarios (pCO2 and temperature), enriched nutrients and combinations of both. Show More Summary

The effects of elevated temperature and dissolved ?CO2 on a marine foundation species

Understanding how climate change and other environmental stressors will affect species is a fundamental concern of modern ecology. Indeed, numerous studies have documented how climate stressors affect species distributions and population persistence. Show More Summary

Impacts of CO2-induced ocean acidification on predator detection ability and developementof temperate fish

Ocean acidification, caused by elevated levels of atmospheric carbon dioxide (CO2), is recognized as a serious threat to marine ecosystems. Until now, most studies have focused on marine calcifying organisms, due to dependence on calcium carbonate, which is likely to become limited under future acidification scenarios. Less attention has been given to fish, but recent […]

Global proteome profiling of a marine copepod and the mitigating effect of ocean acidification on mercury toxicity after multigenerational exposure

Previously, we found that ocean acidification (OA) mitigates mercury (Hg) toxicity to marine copepod Tigriopus japonicus under multigenerational exposure (four generations, F0-F3). To determine the response mechanisms of T. japonicus...Show More Summary

Collaboration with new scholar and NOAA Ocean Acidification Program Show Potenital

This past month, NCCOS welcomed a new Hollings Scholar, Madison Uetrecht, who will study the effects of ocean acidification on oyster growth under Dr. Beth Turner over the summer months. They visited Mook Sea Farm, where Uetrecht will conduct out-planting experiments with juvenile oysters to assess whether shell growth and calcification changes during different field […]

Impacts of climate change on fish and shellfish in the coastal and marine environments of Caribbean Small Island Developing States (SIDS)

The commercially important fish and shellfish of Caribbean SIDS have been considered in four groups based on environment and following the typical division of fishery groups used in this region. There is a dearth of research and long-term datasets on the impacts of climate change on Caribbean marine environments and the important fishery resources. Most […]

Impacts of physical environments in the coastal and marine environments of Caribbean Small Island Developing States (SIDS)

Temperature – sea surface temperature has risen by more than 1 °C over the last 100 years. Future temperature rises will have impacts on hurricanes, rainfall, coral reefs and wider marine ecosystems. Hurricanes – The IPCC (IPCC AR5 WG1) found strong evidence for an increase in the frequency and intensity of the strongest tropical hurricanes since […]

Impacts of ocean acidification in the coastal and marine environments of Caribbean Small Island Developing States (SIDS)

Oceans have absorbed one third of the carbon dioxide (CO2) released to the atmosphere from human activities causing the seawater pH to decrease by 0.1 units since the Industrial Revolution. There is certainty that ocean acidification caused by anthropogenic activities is currently in progress and will increase in accord with rising atmospheric CO2 concentrations. There […]

Impacts of climate change on coral in the coastal and marine environments of Caribbean Small Island Developing States (SIDS)

Coral reefs are integral to life in the Caribbean – providing protection from storms, sustaining national economies and livelihoods through tourism and fishing, and supporting culture, recreation and biodiversity conservation. Over a decade ago, their value was estimated at US$3.1 – 4.6 billion each year. Show More Summary

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