Blog Profile / Ocean Acidification

Filed Under:Biology / Marine Biology
Posts on Regator:4954
Posts / Week:19.2
Archived Since:July 23, 2010

Blog Post Archive

A new online resource: “The Ocean Acidification Page”, Facebook

A new page addressing the topic of ocean acidification has been recently launched on Facebook. The page was created by Tullio Rossi, PhD student at the University of Adelaide, with the objective of bridging the gap between ocean acidification research and the general public. As Tullio mentions himself, this page represents “a place where science […]

Ocean acidification impairs crab foraging behaviour

Anthropogenic elevation of atmospheric CO2 is driving global-scale ocean acidification, which consequently influences calcification rates of many marine invertebrates and potentially alters their susceptibility to predation. Ocean acidification may also impair an organism’s ability to process environmental and biological cues. Show More Summary

Seminar: “Ocean acidification and coral reefs: facilitating a systems?level understanding by working across scales and disciplines”, UC Davis, 19 August 2015

Date, time & location: 19 August 2015, 4 p.m., Bodega Marine Laboratory Lecture Hall, 2099 Westside Rd, Bodega Bay, CA 94923 Speaker: Rebecca Albright, Postdoctoral Research Scientist, Carnegie Institute for Science, Department of Global Ecology, Stanford Host: T. Hill More information.  Filed under: Courses and training, Education

Sponge erosion under acidification and warming scenarios: differential impacts on living and dead coral

Ocean acidification will disproportionately impact the growth of calcifying organisms in coral reef ecosystems. Simultaneously, sponge bioerosion rates have been shown to increase as seawater pH decreases. We conducted a 20-week experiment...Show More Summary

Response of Acropora digitifera to ocean acidification: constraints from ?11 B, Sr, Mg, and Ba compositions of aragonitic skeletons cultured under variable seawater pH

The response of Acropora digitifera to ocean acidification is determined using geochemical proxy measurements of the skeletal composition of A. digitifera cultured under a range of pH levels. We show that the chemical composition (?11B, Sr/Ca, Mg/Ca, and Ba/Ca) of the coral skeletons can provide quantitative constraints on the effects of seawater pH on the […]

Impacts of multiple environmental stressors on coral reef erosion and secondary accretion

Ocean acidification threatens to shift coral reefs from net accreting to net eroding. While corals build reefs through accretion of calcium carbonate (CaCO3) skeletons, net reef growth depends on bioerosion by grazers and borers and on secondary calcification by crustose coralline algae and other calcifying invertebrates. Show More Summary

Patterns of coccolithophore pigment change under global acidification conditions based on in-situ observations at BATS site between July 1990–Dec 2008

Coccolith production is an important part of the biogenic carbon cycle as the largest source of calcium carbonate on earth, accounting for about 75% of the deposition of carbon on the sea floor. Recent studies based on laboratory experiment results indicated that increasing anthropogenic CO2 in the atmosphere triggered global ocean acidification leading to a […]

Biochemical adaptation to ocean acidification

The change in oceanic carbonate chemistry due to increased atmospheric PCO2 has caused pH to decline in marine surface waters, a phenomenon known as ocean acidification (OA). The effects of OA on organisms have been shown to be widespread among diverse taxa from a wide range of habitats. The majority of studies of organismal response […]

Internal consistency of marine carbonate system measurements and assessments of aragonite saturation state: insights from two U.S. coastal cruises

This research assesses the thermodynamic consistency of recent marine CO2 system measurements in United States coastal waters. As one means of assessment, we compared aragonite saturation states calculated using various combinations of measured parameters. Show More Summary

Controlling factors of Ca isotope fractionation in scleractinian corals evaluated by temperature, pH and light controlled culture experiments

In this study, the 44Ca/40Ca ratios of Porites australiensis grown under three different culture experiments composed of temperature, pH and light controlled culture experiments are measured. The temperature dependent isotope fractionation...Show More Summary

Transcriptome-wide analysis of the response of the thecosome pteropod Clio pyramidata to short-term CO2 exposure

Thecosome pteropods, a group of calcifying holoplanktonic molluscs, have recently become a research focus due to their potential sensitivity to increased levels of anthropogenic dissolved CO2 in seawater and the accompanying ocean acidification. Show More Summary

Ocean acidification addressed at the 2016 Ocean Sciences Meeting, 21-26 February 2015, New Orleans, USA

  “Assessing the Cumulative Effects of Complex Ocean Change on Marine Biota” Deadline for abstract submission: Wednesday, 23 September 2015,  23:59 EDT/03:59 +1 GMT! Oceanic conditions are changing at an unprecedented rate due to anthropogenically-driven changes. Show More Summary

Public presentation: “Ocean Acidification and the Dissolving Seas”, Dr. John A. Cigliano, 15 July 2015, Maine, USA

Date, time & location: 15 July 2015, 7:00 pm – 8:30 pm, Moore Auditorium, Schoodic Institute, Acadia National Park, Acadia Drive, Winter Harbor, ME 04693, USA Join Schoodic Institute for a public presentation by Dr. John A. Cigliano. Ocean acidification from CO2 emissions has already had a significant effect on growth, reproduction, and survival of […]

Webinar: “Update on GOA-ON Global Ocean Acidification Observing Network and planned activities”, Libby Jewett (NOAA), 2 July 2015, 12:00 GMT/UTC

Dr. Libby Jewett, Director of the NOAA Ocean Acidification Program, will present on the relatively newly formed Global Ocean Acidification Observing Network (GOA-ON; which has a close working relationship with GOOS. In...Show More Summary

Effects of CO2-driven ocean acidification on early life stages of marine medaka (Oryzias melastigma) (update)

The potential effects of high CO2 and associated ocean acidification (OA) in marine fishes and other non-calcified organisms are less well understood. In this study, we investigated the responses of early life stages (ELS) of marine medaka (Oryzias melastigma) exposed to a series of experimental manipulation of CO2 levels. Show More Summary

Metabolic responses to temperature stress under elevated pCO2 in Crepidula fornicata

In the current context of environmental change, ocean acidification is predicted to affect the cellular processes, physiology and behaviour of all marine organisms, impacting survival, growth and reproduction. In relation to thermal tolerance limits, the effects of elevated pCO2 could be expected to be more pronounced at the upper limits of the thermal tolerance window. […]

Acidification reduced growth rate but not swimming speed of larval sea urchins

Swimming behaviors of planktonic larvae impact dispersal and population dynamics of many benthic marine invertebrates. This key ecological function is modulated by larval development dynamics, biomechanics of the resulting morphology, and behavioral choices. Show More Summary

Effects of ocean acidification on the photosynthetic performance, carbonic anhydrase activity and growth of the giant kelp Macrocystis pyrifera

Under ocean acidification (OA), the 200 % increase in CO2(aq) and the reduction of pH by 0.3–0.4 units are predicted to affect the carbon physiology and growth of macroalgae. Here we examined how the physiology of the giant kelp Macrocystis pyrifera is affected by elevated pCO2/low pH. Growth and photosynthetic rates, external and internal carbonic anhydrase […]

Opinion: Ocean acidification is an indisputable problem

Oceans are like giant vacuum cleaners. They absorb carbon dioxide emitted from burning fossil fuels and help clean the air. This has a beneficial effect on the Earth’s atmosphere and climate. But the effects on the oceans and on the species that inhabit them are far less positive because, in the process, oceans are becoming more acidic. As a result, […]

Probing human vulnerability to ocean acidification uncovers mitigation and adaptation opportunities

Ocean acidification has recently elbowed its way onto the list of wicked problems that coastal communities need to plan for. Coastal communities depend on a variety of oceanic goods and services, often led by marine harvests [1]. However, ocean acidification is poised to disrupt this dependence: for example, it jeopardized the Pacific Northwest United States’ […]

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