Sentences with phrase «high carbon dioxide levels of»

Each year, the high carbon dioxide levels of winter were higher, and each year, the summer levels did not fall as low.

Not exact matches

The second, and more important, reason is that this cave harbors extraordinarily high levels of carbon dioxide.

Wolfe, who is the Vice-Chairman of the Legislature and the chair of the Environmental Committee, also noted that the operation of high - efficiency appliances does help to reduce the level of carbon dioxide (CO2) that is released by the US power grid annually.

Near - shore volcanic vents off Italy represent a microcosm of how the ocean may react to high levels of carbon dioxide

Scientists frequently look to the Eocene to understand how the Earth responds to higher levels of carbon dioxide.

At night, for example, water in the estuary had higher carbon dioxide, lower pH levels, and a lower saturation state from the collective «exhale» of the ecosystem.

«The stability of the rate of change justifies using higher carbon dioxide enrichment levels to interpret soil water responses to currently observed carbon dioxide enrichment,» Wang said.

But high levels of carbon dioxide in lake waters may dull their senses, leaving the critters open to attack.

The relatively pleasant global climate of the past 10,000 years is largely thanks to higher levels of atmospheric carbon dioxide

Record emissions of carbon dioxide mean atmospheric concentrations have reached levels that lead to the highest temperature increases

Scientists have measured remarkably high levels of carbon dioxide (CO2) in the soil near dead trees on the flanks of California's Mammoth Mountain, a dormant volcano.

Also associated with this event are high levels of carbon dioxide in the atmosphere, which are linked to elevated ocean and atmospheric temperatures.

Scientists believe that the different pattern of deep ocean circulation was responsible for the elevated temperatures 3 million years ago when the carbon dioxide level in the atmosphere was arguably what it is now and the temperature was 4 degree Fahrenheit higher.

The research focused on a time that marked a change between a period of high carbon - dioxide levels in the atmosphere similar to modern day and much lower levels similar to the period before the industrial revolution, Pullen said.

The amount of carbon dioxide (CO2) in the air is now at its highest level in human history, largely because of coal - burning power plants and vehicle emissions.

In the longest - running experiment of its kind, the plants that were supposed to thrive in higher carbon dioxide levels have instead done less well.

Indeed, when the researchers exposed chloroplasts extracted from wheat cells to nitrate, they found that high carbon dioxide levels inhibited the amount of nitrogen that got inside the chloroplasts to be converted.

Although plants grown in high levels of carbon dioxide — say, double the current atmospheric concentrations — initially grow rapidly, the growth tapers off within weeks and the plants wind up with a low protein content.

To find out if how the nitrogen is delivered makes a difference, Arnold Bloom, a crop physiologist at the University of California, Davis, and his team monitored the growth of wheat plants raised in high levels of carbon dioxide.

Coccolithophores may be able to adapt to a world with higher levels of carbon dioxide.

«When the water is more saturated and has greater alkalinity it helps offset higher levels of carbon dioxide, ensuring that shell formation can proceed — and also making the shells bigger,» Waldbusser says.

«Bivalves have been around for a long time and have survived different geologic periods of high carbon dioxide levels in marine environments,» says George Waldbusser, an Oregon State University (OSU) marine ecologist and biogeochemist and lead author of the paper.

Fossil - fuel use sends high levels of carbon dioxide into the atmosphere, but high levels of carbon dioxide aren't fingerprints of intelligent life, Shostak said — you can find tons of carbon dioxide on Venus.

In its later life, «instead of trying to model utopia, Biosphere 2 would actually model dystopia — a future plagued by high carbon dioxide levels,» wrote Rebecca Reider, author of a definitive history of the project.

Work has also been hampered because researchers must return to the surface for fresh air every three hours — the cave contains high levels of carbon dioxide.

Previous studies, including work by Cai, have shown that acidification can be particularly serious in nutrient - rich coastal waters which often contain areas with too little oxygen and high levels of carbon dioxide near the bottom.

Dr Tina Van De Flierdt, co-author from the Department of Earth Science and Engineering at Imperial College London, says: «The Pliocene Epoch had temperatures that were two or three degrees higher than today and similar atmospheric carbon dioxide levels to today.

Researchers at the University of Gothenburg have now revealed that the concentration of nitrogen in plants» tissue is lower in air with high levels of carbon dioxide, regardless of whether or not the plants» growth is stimulated.

Beerling's models suggest that high carbon dioxide and methane levels contributed to this (Proceedings of the National Academy of Sciences, DOI: 10.1073 / pnas.1102409108).

Damselfish exposed to high levels of carbon dioxide have difficulty discerning rapid light flickers

Co-author Peter Clark, an OSU paleoclimatologist, said that because current carbon dioxide, or CO2, levels are as high as they were 3 million years ago, «we are already committed to a certain amount of sea level rise.»

«For all types of ecosystem the results show that high carbon dioxide levels can impede plants» ability to absorb nitrogen, and that this negative effect is partly why raised carbon dioxide has a marginal or non-existent effect on growth in many ecosystems,» says Johan Uddling.

Curious how higher - CO2 conditions would affect this ability, researchers placed the animals in water tanks with different levels of carbon dioxide and shone lights at various flickering rates.

Some scientists are linking the phenomenon to warmer waters and ocean acidification caused by high levels of carbon dioxide in the atmosphere.

Higher carbon dioxide levels change the concentration of ions (electrically charged atoms and molecules) in the fishes» blood, altering the way that the neuroreceptors work.

The tropical rainforest was able to persist under elevated temperatures and high levels of atmospheric carbon dioxide,.......

Work on Aquarius has so far given valuable insights into the physiology of corals and their symbiotic algae, the effects of herbivorous fish on coral growth, and the resistance of sponges to higher temperatures and levels of carbon dioxide.

«If we don't stop burning fossil fuel and cutting down our tropical forests — all those human activities that maintain our society — we're going to reach incredibly high levels of carbon dioxide in our atmosphere.

With higher levels of carbon dioxide and higher average temperatures, the oceans» surface waters warm and sea ice disappears, and the marine world will see increased stratification, intense nutrient trapping in the deep Southern Ocean (also known as the Antarctic Ocean) and nutrition starvation in the other oceans.

The global average carbon dioxide level reached a new record high of 397.2 parts per million last year, a nearly 2 ppm rise from 2013 and a 40 percent increase from preindustrial levels.

«Atmospheric CO2 is not a pollutant, it is in fact the very elixir of life,» Craig Idso, a science adviser to the CO2 Coalition, said during a panel discussion at CPAC exploring the benefits attached to higher levels of carbon dioxide in the atmosphere.

Contrary to what «activist scientists,» political figures, and media outlets have told the pubic, Idso told CPAC attendees, higher levels of carbon dioxide actually will work to the advantage of future generations.

It has been known that high levels of carbon dioxide in the air causes health and environmental hazards, but a new study shows that high concentration of Carbon dioxide might actually be helping plant cycles, resulting to a greener earth.

April will be the first time in human history where levels of atmospheric carbon dioxide were higher than 400 parts per million for an entire month, one scientist who monitors the levels said.

Fish exposed to higher carbon dioxide levels — which are expected to increase in the oceans for several decades — showed impaired cognitive function, learning difficulties, slowed visual capacity and altered sense of smell and sound.

It has a high global warming potential: 72 times that of carbon dioxide over 20 years, and 25 times over 100 years, [43] and the levels are rising.

Higher levels of carbon dioxide, however, do have an indirect effect on the ozone layer in the stratosphere.

In the past 150 years, such activities have pumped enough carbon dioxide into the atmosphere to raise its levels higher than they have been for hundreds of thousands of years.

Palm trees grew on the North Slope of Alaska and carbon dioxide levels were 3 to 12 times higher than today's concentrations.

But sharks exposed to the highest level of carbon dioxide spent just 15 per cent of their time in the squid - scented stream.