Although the absorption of atmospheric CO2 by the ocean helps limit climate warming, it also
changes seawater chemistry and causes ocean acidification.
«
The changing seawater chemistry means that those threads are going to get weaker.
Much of the research on ocean acidification to date has focused on the effect
changing seawater chemistry has on the calcium carbonate shells of shellfish.
Recent near collapses of the oyster fishery in the Pacific Northwest, directly attributed to
changing seawater chemistry, had substantial negative impacts on local jobs and economies.
Not exact matches
«Ocean acidification can affect individual marine organisms along the Pacific coast, by
changing the
chemistry of the
seawater,» said lead author Brittany Jellison, a Ph.D. student studying marine ecology at the UC Davis Bodega Marine Laboratory.
As atmospheric CO2 levels rise, those in the oceans do too,
changing the
chemistry of the
seawater.
A set of chemical processes dissolves that CO2 and turns it into carbonic acid and sets off a complex
changes to the
chemistry of
seawater, which dissolves shells and coral and creates a cascade effect that could disrupt entire marine ecosystems.
«The other carbon dioxide problem», «the evil twin of global warming», or part of a «deadly trio», together with increasing temperatures and loss of oxygen: Many names have been coined to describe the problem of ocean acidification — a
change in the ocean
chemistry that occurs when carbon dioxide (CO2) from the atmosphere dissolves in
seawater.
Such priorities include: 1) establishing an ocean carbon
chemistry baseline; 2) establishing ecological baselines; 3) determining species / habitat / community sensitivity to ocean acidification; 4) projecting
changes in
seawater carbonate
chemistry; and 5) identifying potentially synergistic effects of multiple stressors.
As CO2 reacts with
seawater, it generates dramatic
changes in carbonate
chemistry, including decreases in pH and in the concentration of carbonate ions.
Oceanic uptake of anthropogenic carbon dioxide (CO2) causes pronounced shifts in marine carbonate
chemistry and a decrease in
seawater pH. Increasing evidence indicates that these
changes — summarized by the term ocean acidification (OA)-- can significantly affect marine food webs and biogeochemical cycles.
Anthropogenic CO2 emissions are leading to a gradual decrease in ocean pH and
changes in
seawater carbonate
chemistry, a process known as ocean acidification (OA).
Continue reading «Comment on «The effects of secular calcium and magnesium concentration
changes on the thermodynamics of
seawater acid / base
chemistry: implications for Eocene and Cretaceous ocean carbon
chemistry and buffering» by Hain et al. (2015)»
Continue reading «Response to comment by Zeebe and Tyrrell on «the effects of secular calcium and magnesium concentration
changes on the thermodynamics of
seawater acid / base
chemistry: Implications for the Eocene and Cretaceous ocean carbon
chemistry and buffering»»
As CO2 reacts with
seawater, it generates dramatic
changes in carbonate
chemistry, including decreases in pH and carbonate ions and an increase in bicarbonate ions.
The carbon dioxide buildup is
changing the
chemistry of surface
seawater, lowering its pH in a way that, in theory, could be harmful to the shell - forming and reef - forming marine organisms of today's ocean ecosystem.
This process tends to buffer the
chemistry of the
seawater so that pH
changes are lessened (see section 2.2.3 and Annex 1 for a more detailed review).»
This process tends to buffer the
chemistry of the
seawater so that pH
changes are lessened» and «Essentially this is an area of great uncertainty.
It's been enough to raise the levels of the ocean — and the extra carbon in the atmosphere has also
changed the
chemistry of that
seawater, making it more acidic and beginning to threaten the base of the marine food chain.
The ocean uptake of excess atmospheric carbon dioxide, the excess above preindustrial levels driven by human emissions, causes well - understood and substantial
changes in
seawater chemistry that can affect marine organisms and ecosystems.
Additional carbon dioxide uptake causes direct
changes in
seawater acid - base and inorganic carbon
chemistry in a process termed ocean acidification.
Finding a way to reverse climate
change is the foremost challenge of our time and the first step is collecting ocean data in order to help us understand how
seawater chemistry is
changing.
Scientists connect
seawater chemistry with climate
change and evolution TORONTO, ON — Humans get most of the blame for climate
change, with little attention paid to the contribution of other natural forces.
«Ocean acidification» (OA), a
change in
seawater chemistry driven by increased uptake of atmospheric CO2 by the oceans, has probably been the most - studied single topic in marine science in recent times.
Whether the decline we report can be attributed to single factors such as circulation
changes that have not yet been documented, a fundamental difference in the cycling of carbon in this region, an alteration of carbon metabolism in these animals, perhaps via an effect of
changing seawater carbon
chemistry on shell composition (e.g. [8]-RRB-, or undescribed interactions among these factors is unknown.
The carbon dioxide emitted in addition to that which is produced naturally has
changed the
chemistry of
seawater.
This
change in
seawater chemistry alters the way sound moves through the ocean, allowing it to propagate farther, particularly for sounds two and a half octaves above «middle C,» said researcher Keith Hester of the Monterey Bay Aquarium Research Institute in California.
The rapid uptake of heat energy and CO2 by the ocean results in a series of concomitant
changes in
seawater carbonate
chemistry, including reductions in pH and carbonate saturation state, as well as increases in dissolved CO2 and bicarbonate ions [3]: a phenomenon defined as ocean acidification.