Sentences with phrase «calcifying organisms»

Calcifying organisms are living beings that have the ability to produce and deposit calcium carbonate in their bodies. This process helps them build protective structures like shells or skeletons. Full definition
The effect of ocean acidification on calcifying organisms in marine ecosystems: an organism - to - ecosystem perspective
Depends on what scenerio is used — and on the rate of dissolution of calcifying organisms as they sink to the ocean floor.
(There is much less uncertainty in what will happen to ocean chemistry: the pH will drop, with serious consequences for calcifying organisms from coccolithophores to corals to crabs to clams.)
Zeebe and his colleagues continue their work on the PETM to study other aspects of the event — for example, determining how severe ocean acidification was during the PETM and what impact it had on calcifying organisms in the ocean.
Many calcifying organisms such as corals, mussels or snails will find it more and more difficult to build their shells and skeletons.
Exactly these elements are needed by calcifying organisms — plankton, mussels, snails, crabs or corals — to build their shells and skeletons.
Most calcifying organisms have evolved mechanisms to «up - regulate» their internal pH by pumping H + ions out of the compartment and raising internal pH. In addition pumping H + ions out of the calcifying compartments is beneficial because it maintains an electrical gradient that facilitates importing calcium ions (Ca + +) into the calcifying compartment.
Several studies have shown that this also holds true for Emiliania huxleyi, the world's most abundant and most productive calcifying organism.
In a field experiment, some tiny phytoplankton species benefitted from extra carbon dioxide in the water, while many calcifying organisms appeared to suffer.
In particular calcifying organisms, including the sea urchin larvae, developed more slowly and showed higher mortality.
ABSTRACT The impact of seawater acidification on calcifying organisms varies at the species level.
Some of the smaller calcifying organisms are important food sources for higher marine organisms.
To much ocean carbon intake leads to ocean acidification — resulting decrease in pH will have negative consequences, primarily for oceanic calcifying organisms.
Oceanic calcifying organisms will be particularly affected.
Acidified water corrodes calcium carbonate minerals — an essential ingredient for shell - and skeleton - building that many calcifying organisms rely upon.
Nonetheless the concept that a lower pH reduces the concentration of carbonate ions evoked climate fears amongst some researchers who incorrectly believed calcifying organisms require carbonate ions.
The diminishing availability of carbonate ion -LRB--RRB-, and ensuing reduction in calcium carbonate (CaCO3) saturation states are widely reported to reduce calcification in a wide range [11,12] of, but not all, calcifying organisms [13,14].
You can have a differential impact on biology and chemistry, so if you really want to assess what will be the status of calcifying organisms in 2100 there is one part, the chemistry, for which the organisms have no control but for the biology they can perhaps adapt and there might be a way for the organisms to mitigate the negative impacts of ocean acidification.
This process, termed ocean acidification, makes it energetically more costly for calcifying organisms to form their calcareous shells and skeletons.
Calcite - A calcium carbonate (limestone) mineral, used by shell - or skeleton - forming, calcifying organisms such as foraminifera, some macroalgae, lobsters, crabs, sea urchins and starfish.
Katharina Fabricius, Gertraud Schmidt, Laurie Hofmann, Sam Noonan, Julia Strahl, Sven Uthicke, Nikolas Vogel, Marlene Wall Many calcifying organisms are sensitive to ocean acidification, but it is not clear how multiple stress factors may interact to affect their physiology and ecology.
The researchers concluded that the acidification levels produced were too weak to have caused the disappearance of the calcifying organisms.
ref In many parts of the ocean, the seawater is supersaturated with respect to these calcium carbonate minerals, meaning that there is enough calcium carbonate for calcifying organisms to build their skeletons and shells.
A CO2 concentration of 450 - 500 ppm means the Arctic Ocean and good portions of the Antarctic Ocean would become corrosive to all calcifying organisms from surface to bottom.
Orr, J.C. et al. (2005) Anthropogenic ocean acidification over the twenty - first century and its impact on calcifying organisms.
This new study has demonstrated that cold polar surface waters will start to become corrosive to these calcifying organisms once the atmospheric CO2 level reaches about 600 parts per million, which is 60 % more than the current level but which could be attained by the middle of this century.
Seaweeds create a chemical microenvironment at their surface, providing refuge for calcifying organisms that are at risk from decreasing oceanic pH.
Acidification of polar waters is predicted to have adverse effects on calcified organisms and consequential effects on species that rely upon them (high confidence).
«More acidic waters make it difficult for corals and other calcifying organisms, such as animals with shells, to form their skeletons, which are ultimately responsible for building the physical structure of the reef,» says Australian Institute of Marine Science research scientist, Dr Janice Lough.»
Large - scale impacts on pteropods and other calcifying organisms that form the base of the marine food chain could distress populations of larger fish that feed on them, leading to significant economic impacts on the multi-billion dollar U.S. seafood industry.
All calcifying organisms have a protective organic layer that minimizes sensitivity to any changes in seawater pH and all isolate their calcifying chambers from ambient water conditions.
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