Sentences with phrase «high carbon dioxide»

Whether they could survive both a sustained rise in temperatures and the increasing acidification of the oceans that goes with higher carbon dioxide levels is another matter.

Developed nations typically have high carbon dioxide emissions per capita, while some developing countries lead in the growth rate of carbon dioxide emissions.

This is consistent with higher carbon dioxide concentrations reducing the nutritional quality of the plant material and stimulating increased feeding.

Warming is expected to affect the carbon cycle, resulting in even higher carbon dioxide concentration in the atmosphere, but the magnitude of this is uncertain.

The results show that under high carbon dioxide levels, the bugs ate 88 per cent more leaf material than under current levels.

Study participants were exposed to moderately high carbon dioxide levels in other tests, which usually increases the breathing rate and depth.

However, high carbon dioxide levels, such as those anticipated by climate change models, may hinder the ability of fish to recognize one another and form groups with familiar individuals.

«If you are a plant... you are going to recognise that higher carbon dioxide concentrations are better,» he said.

Fish raised in the more acidic seawater that would result from higher carbon dioxide levels forget to flee predators.

Development of cost - effective means to separate carbon dioxide during the production process will improve this advantage over other fossil fuels and enable the economic production of gas resources with higher carbon dioxide content that would be too costly to recover using current carbon capture technologies, Tour said.

Such diversity research has already led to the development of disease - resistant strains and the identification of crops that could thrive under higher carbon dioxide conditions, as well as new ways to deploy diversity.

In a study published in the journal Nature Climate Change, scientists from three universities show that products made in China are associated with significantly higher carbon dioxide emissions than the same products made elsewhere.

«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.

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.

As of September 2009 Carbon Monitoring for Action (CARMA) reports that Southern Company is among the five highest carbon dioxide emitting power companies in the World, emitting 206,000,000 tons of atmospheric CO2 each year.

«Higher carbon dioxide does lead in an agricultural context to more production,» DeLucia says.

Climate scientists know that the planet is warming, and dangerously, as a consequence of ever higher carbon dioxide levels in the atmosphere thanks to changes humans have made to the planet's atmospheric chemistry — and they know it can get worse.

Scientists studying naturally high carbon dioxide coral reefs in Papua New Guinea found that erosion of essential habitat is accelerated in these highly acidified waters, even as coral growth continues to slow.

Because lower rank coals have relatively high carbon dioxide emission factors, increased use of these coals caused the national average carbon dioxide emission factor to rise from 206.5 pounds per million Btu in 1980 to 207.6 pounds per million Btu in 1992.

Plants such as coniferous trees that associate with ectomycorrhizal fungi can derive benefits from higher carbon dioxide levels, but plants associated with arbuscular mycorrhizal fungi, such as grassland vegetation, can't.

They showed that under high carbon dioxide conditions, plants deactivate three genes that help them produce chemical defenses against insects.

This breakdown showed that certain states, such as New York for example, that would expected to see its increasing population and affluence bring along significantly higher carbon dioxide emissions instead saw those emissions fall thanks to politics that favored environmental protections.

The observatory's location in Hawaii was chosen specifically due to the cleanliness of the air that produces more accurate measurements than what would be measured close to areas with higher carbon dioxide emissions.

A study, just out Monday in the journal Proceedings of the National Academy of Sciences, supports a long - standing theory that some plants become more efficient at using water under higher carbon dioxide concentrations.

If the feedbacks from higher carbon dioxide levels are strongly positive, then in past geological eras when CO2 levels were much higher than today there should have occurred the «runaway climate» that James Hansen fantasizes about.

Saff said that poison ivy plants are expected to thrive with higher carbon dioxide levels.

In the new study, McGuire and his colleagues used simulations to study changes in permafrost and carbon storage in the northern permafrost region from 2010 to 2299 using two climate change scenarios: One with low carbon dioxide emissions and one with high carbon dioxide emissions.

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 research team examined tens of thousands of coral genes and was able to identify those that were responsible for enabling acclimation to high carbon dioxide.

Part of the problem is that the benefits of better plant growth, thanks to higher carbon dioxide concentrations (plants use CO2 for photosynthesis) are more than offset by the impact of higher temperatures and differing precipitation.

As temperatures rise due to higher carbon dioxide in the atmosphere, silicate - weathering rates are hypothesized to increase and remove carbon dioxide from the atmosphere faster.

«We were curious about how this would change in a world with higher carbon dioxide levels.

States that use coal power, such as Wyoming, West Virginia and Kentucky, have the highest carbon dioxide 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.

Plantago lanceolata — the plantain found in the high carbon dioxide springs and the subject of this study.

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.

Production of organic corn resulted in the greatest nitrous oxide emissions and represented about 8 % of total GHG emission; corn also had the highest carbon dioxide emissions per hectare.

«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.

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).

«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.

«High carbon dioxide levels cause warming in tropics.»

«We found that particularly low oxygen levels coincided with intervals of elevated global temperatures and high carbon dioxide concentrations,» explains Tappert.