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Chemical clues in fossil shells may help us understand today’s ocean acidification

As atmospheric CO2 levels rise, so too do those in the sea, leading to ocean acidification that outpaces that of any other time in tens of millions of years. Some effects of ocean acidification are imminent, like the fact that calcified organisms such as corals and shellfish will have access to less and less of […]

Maine panel to reveal ocean acidification findings

AUGUSTA, Maine – Members of a Maine panel studying the effects of carbon dioxide pollution on the state’s commercial fisheries are preparing to unveil their report. The committee plans to present its finding and proposed legislation designed to protect Maine ecosystems on Thursday. The panel spent months studying ocean acidification to make recommendations on how […]

Obama seeks $30M for ocean acidification studies

Monterey >> Marine researchers found a gift hidden among the loophole closures and tax changes in the President Barack Obama’s new budget. Released Monday, the budget proposal for fiscal year 2016 included $30 million for the National Oceanic and Atmospheric Administration to study ocean acidification, the ongoing change in ocean chemistry caused by higher levels […]

Scientists try to regrow a dying coral reef 25 times faster than nature (audio, video & text)

The world’s coral reefs are in perilous danger due to overfishing, pollution and climate change. But a team of scuba-diving scientists has developed a groundbreaking method for speeding up coral growth in hopes of stemming the underwater crisis. Hari Sreenivasan reports from the Florida Keys. (…) HARI SREENIVASAN: Half a mile off the Florida Keys, […]

Saving money is great, but saving the Chesapeake Bay will be even better

Whitman Miller’s “off the shelf” technology may answer complicated questions about rising CO2 and ocean acidification. It could be mistaken for a science fair project gone amok—a suitcase-sized water proof box stuffed with tubing, electronic wires, gauges and an LED display. Show More Summary

The acid test: Calcium signaling in the skeletogenic layer of reef-building coral

Since the Industrial Revolution, carbon dioxide (CO2 ) emissions have increased more than 40%. This increased atmospheric CO2 drives ocean acidification and has potentially serious consequences for all marine life, especially calcifying organisms. Show More Summary

Photochemical responses of the diatom Skeletonema costatum grown under elevated CO2 concentrations to short-term changes in pH

Variability in pH is a common occurrence in many aquatic environments, due to physical, chemical and biological processes. In coastal waters, lagoons, estuaries and inland waters, pH can change very rapidly (within seconds or hours) in addition to daily and seasonal changes. At the same time, progressive ocean acidification caused by anthropogenic CO2 emissions is […]

Ocean acidification: how CO2 emissions and false solutions threaten our oceans

Rising levels of carbon dioxide (CO2) emissions in the earth’s atmosphere are causing a phenomenon called ocean acidification. As the oceans absorb more and more CO2, this results in seawater becoming more acidic and creates increasingly unfavorable conditions for calcifying sea life such as shellfish and corals. Show More Summary

Joint postdoctoral position in ocean ecosystem and biogeochemical modeling- UCLA, UW & SCCWRP, USA

The UCLA Institute of Geophysics and Planetary Physics and Department of Atmospheric and Oceanic Sciences and Southern California Coastal Water Research Project Authority (www.sccwrp.org), a leader in aquatic environmental research,Show More Summary

Welfare estimates of avoided ocean acidification in the U.S. mollusk market

Ocean acidification has the potential to adversely affect a number of valuable marine ecosystem services by making it more difficult, and eventually impossible, for many marine organisms to form shells and skeletons. Reef-forming corals,...Show More Summary

A quantitative genetic approach to assess the evolutionary potential of a coastal marine fish to ocean acidification

Assessing the potential of marine organisms to adapt genetically to increasing oceanic CO2 levels requires proxies such as heritability of fitness-related traits under ocean acidification (OA). We applied a quantitative genetic method to derive the first heritability estimate of survival under elevated CO2 conditions in a metazoan. Show More Summary

Direct measurement of the boron isotope fractionation factor: Reducing the uncertainty in reconstructing ocean paleo-pH

The boron isotopic composition of calcium carbonate skeletons is a promising proxy method for reconstructing paleo-ocean pH and atmospheric CO2 from the geological record. Although the boron isotope methodology has been used extensively over the past two decades to determine ancient ocean-pH, the actual value of the boron isotope fractionation factor (?B?B) between the two […]

Impact of seawater carbonate chemistry on the calcification of marine bivalves

Bivalve calcification, particular of the early larval stages is highly sensitive to the change of ocean carbonate chemistry resulting from atmospheric CO2 uptake. Earlier studies suggested that declining seawater [CO32?] and thereby lowered carbonate saturation affect shell production. Show More Summary

Research Fellow: Coral Reefs – ARC Centre of Excellence for Coral Reef Studies, James Cook University, Australia

Applications close on 23 February 2015! The Australian Research Council Centre of Excellence for Coral Reef Studies, headquartered at James Cook University, and the Australian Institute of Marine Science (AIMS) are global leaders in coral reef research and have common interests in research that promotes the future sustainability of coral reefs. As part of this […]

Interactive comment on “A metadata template for ocean acidification data” by L.-Q. Jiang et al.

I am the data curator of the Ocean Acidification International Coordination Centre (OA-ICC; http://www.iaea.org/ocean-acidification) and would like to provide the following suggestions. 1. One of the main goals of this metadata template is to enable ocean acidification data sets are easily discoverable. Show More Summary

Impacts of groundwater discharge at Myora Springs (North Stradbroke Island, Australia) on the phenolic metabolism of eelgrass, Zostera muelleri, and grazing by the juvenile rabbitfish, Siganus fuscescens

Myora Springs is one of many groundwater discharge sites on North Stradbroke Island (Queensland, Australia). Here spring waters emerge from wetland forests to join Moreton Bay, mixing with seawater over seagrass meadows dominated by eelgrass, Zostera muelleri. We sought to determine how low pH / high CO2 conditions near the spring affect these plants and […]

Saturating light and not increased carbon dioxide under ocean acidification drives photosynthesis and growth in Ulva rigida (Chlorophyta)

Carbon physiology of a genetically identified Ulva rigida was investigated under different CO2(aq) and light levels. The study was designed to answer whether (1) light or exogenous inorganic carbon (Ci) pool is driving growth; and (2)...Show More Summary

Design, development, and implementation of recirculating aquaria for maintenance and experimentation of deep-sea corals and associated fauna

Here, the development and construction of recirculating aquaria for the long-term maintenance and study of deep-water corals in the laboratory is described. This system may be applied to the maintenance and experimentation on marine organisms in the absence of a natural seawater supply. Since 2009, numerous colonies of Lophelia pertusa as well as several species […]

Ocean acidification enhances the bioerosion of a common coral reef sponge: implications for the persistence of the Florida Reef Tract

The increase in anthropogenic carbon dioxide in seawater, termed ocean acidification (OA), depresses calcification rates of coral and algae, and may contribute toward reef ecosystem degradation. To test how future OA conditions willShow More Summary

The end-Triassic negative ?13C excursion: A lithologic test

The end-Triassic mass extinction is associated with a large negative carbon isotope excursion, which has been interpreted as reflecting the rapid injection of 13C depleted CO2 or methane associated with the emplacement of the Central Atlantic Magmatic Province. However, in a number of sections in central Europe, the negative excursion is associated with a carbonate-poor […]

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