Blog Profile / Ocean Acidification


URL :http://oceanacidification.wordpress.com
Filed Under:Biology / Marine Biology
Posts on Regator:6938
Posts / Week:19.2
Archived Since:July 23, 2010

Blog Post Archive

Effects of acidified seawater on calcification, photosynthetic efficiencies and the recovery processes from strong light exposure in the coral Stylophora pistillata

The aim of this study was to investigate whether coral photosynthetic efficiencies and recovery processes are affected by CO2-driven ocean acidification in symbiont photosynthesis and coral calcification. We investigated the effectsShow More Summary

Calcifying response and recovery potential of the brown alga Padina pavonica under ocean acidification

Anthropogenic CO2 emissions are causing ocean acidification (OA), which affects calcifying organisms. Recent studies have shown that Padina pavonica investigated along a natural pCO2 gradient seems to acclimate to OA by reducing calcified structures and changing mineralogy from aragonite to calcium sulphate salts. The aim of the present study was to study the potential for […]

Solar UVR sensitivity of phyto- and bacterioplankton communities from Patagonian coastal waters under increased nutrients and acidification

The effects of ultraviolet radiation (UVR) under future expected conditions of acidification and increase in nutrient inputs were studied on a post-bloom phytoplankton and bacterioplankton community of Patagonian coastal waters. We performed...Show More Summary

Decreased pH and increased temperatures affect young-of-the-year red king crab (Paralithodes camtschaticus)

The red king crab (Paralithodes camtschaticus) is a high-latitude commercially important species with a complex life-history cycle which encompasses a wide variety of conditions and habitats. High-latitude waters, including those around...Show More Summary

Could an artificial coral reef protect marine biodiversity against climate changes?

Climate change from rising levels of carbon dioxide (CO2) is having two major effects in our seas – global warming and ocean acidification – and the combination of these threats is affecting marine life from single organisms to species communities. Researchers from the University of Portsmouth are helping to build an artificial reef that could […]

John Laird: We can’t fight ocean acidification alone

I was proud to represent California at the first-ever United Nations Ocean Conference this month in New York, as representatives from around the world gathered to focus on ocean health. With a goal to conserve and sustainably use the oceans, seas and marine resources, the summit concluded with a global agreement to reverse the decline […]

Intraspecific variations in responses to ocean acidification in two branching coral species

Ocean acidification is widely recognised to have a negative impact on marine calcifying organisms by reducing calcifications, but controversy remains over whether such organisms could cope with ocean acidification within a range of phenotypic plasticity and/or adapt to future acidifying ocean. Show More Summary

Rising temperatures and acidification threaten Mediterranean sea species

Water temperatures in the northwestern Mediterranean are increasing much faster than global averages, threatening the survival of several species, French researchers said. Weekly water temperature readings by researchers at the Villefranche-sur-Mer...Show More Summary

Ocean acidification is threatening the Massachusetts shellfish industry (text and audio)

One of the bright spots in the state’s struggling fishing industry is shellfish, a lucrative crop of oysters, clams and sea scallops that generate hundreds of millions of dollars a year for the Massachusetts economy. But climate change is affecting the water chemistry these shellfish need to grow and thrive. The process is called ocean acidification, […]

Elevated carbon dioxide and temperature affects otolith development, but not chemistry, in a diadromous fish

Ocean acidification threatens marine ecosystems by altering ocean chemistry and calcification processes in marine organisms. This study investigated the effects of predicted future CO2 levels, under varying temperature levels, on otolith...Show More Summary

Sulfur in foraminiferal calcite as a potential proxy for seawater carbonate ion concentration

Sulfur (S) incorporation in foraminiferal shells is hypothesized to change with carbonate ion concentration [ ], due to substitution of sulfate for carbonate ions in the calcite crystal lattice. Hence S/Ca values of foraminiferal carbonate shells are expected to reflect sea water carbonate chemistry. To generate a proxy calibration linking the incorporation of S into […]

An evaluation of potentiometric pH sensors in coastal monitoring applications

A wealth of historical coastal water pH data has been collected using potentiometric glass electrodes, but the accuracy and stability of these sensors is poorly understood. Here we compared pH measurements from five potentiometric sensors...Show More Summary

The role of biological rates in the simulated warming effect on oceanic CO2 uptakel

Marine biology plays an important role in the ocean carbon cycle. However, the effect of warming-induced changes in biological rates on oceanic CO2 uptake has been largely overlooked. We use an Earth system model of intermediate complexity to investigate the effect of temperature-induced changes in biological rates on oceanic uptake of atmospheric CO2 and compare it with […]

Calcite dissolution kinetics at the sediment-water interface in natural seawater

The absorption, or uptake, of anthropogenic CO2 by the oceans results in a decrease in pH and carbonate ion concentration, [CO32 ?]; as a consequence, the saturation state of seawater with respect to CaCO3 minerals (calcite, aragonite) falls, leading to a shallowing of their saturation depths and triggering an increase in their dissolution at the seafloor. Nearly one-third […]

Physiological responses of gray mullet Mugil cephalus to low-pH water

We examined changes in the physiological responses of gray mullet Mugil cephalus exposed to acidic seawater (pH 6.0, 6.5, 7.0) and normal seawater (pH 8.0, control) for 15 days. As pH decreased, survival rate and body weight also decreased. Show More Summary

Release of Version 5 of the Surface Ocean CO2 Atlas – celebrating 10 years of SOCAT!

On behalf of the Surface Ocean CO2 Atlas (SOCAT) scientific community, we are proud to announce the release of SOCAT Version 5! SOCAT is a synthesis activity by the international marine carbon research community (>100 contributors).Show More Summary

Scales and drivers of seasonal pCO2 dynamics and net ecosystem exchange along the coastal waters of southeastern Arabian Sea

The impact of seasonal coastal upwelling on the dynamics of dissolved inorganic carbon (DIC) and sea-air fluxes of CO2 along the coastal waters of Kochi was investigated during 2015, as a part of Ecosystem Modelling Project. The surface water pCO2 varied from 396 to 630 ?atm during the study period. Significant inter-seasonal variations were found in the distribution of […]

Combined effects of elevated pCO2 and warming facilitate Cyanophage infections

Elevated pCO2 and warming are generally expected to influence cyanobacterial growth, and may promote the formation of blooms. Yet, both climate change factors may also influence cyanobacterial mortality by favoring pathogens, such as viruses, which will depend on the ability of the host to adapt. Show More Summary

Combined effects of sea water acidification and copper exposure on the symbiont-bearing foraminifer Amphistegina gibbosa

Coral reefs are threatened by global and local stressors such as ocean acidification and trace metal contamination. Reliable early warning monitoring tools are needed to assess and monitor coral reef health. Symbiont-bearing foraminifers...Show More Summary

Herrera, Kilmer team up on ocean acidification issue

WASHINGTON, D.C. — Two U.S. representatives from Washington state, Derek Kilmer and Jaime Herrera Beutler, have reintroduced bipartisan legislation to help fight ocean acidification. The bill, entitled the Ocean Acidification Innovation Act (H.R. Show More Summary

Copyright © 2015 Regator, LLC