Sentences with phrase «higher carbon dioxide»

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

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.

The mid-Cretaceous was characterized by geography and an ocean circulation that was vastly different from today; as well as higher carbon dioxide levels (at least 2 to 4 times higher than today).

Warmer temperatures and higher carbon dioxide levels mean certain plants will thrive, and those are the plants that tend to make us sneeze during allergy season.

Name for me the regional climates that aren't equally or more biologically productive today than 50 years ago due to higher carbon dioxide.

We have to adapt to higher carbon dioxide levels, leading to even more global warming.

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.

Higher carbon dioxide levels in aquatic and marine environments favour algal growth and anoxic environments.

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.

But it also confirms many researchers» suspicion that higher carbon dioxide levels coincided with warmer intervals during the study period.

«[The trees] may be able to grow taller for a given diameter under higher carbon dioxide, and you wouldn't see that from tree rings.

Future crop yields lower - than - expected under higher carbon dioxide levels Future crop yields lower than expected under higher carbon dioxide levels mongabay.com June 29, 2006 Open - air field trials involving five major...

The UN estimates that poor nutrition already accounts for around 3 million deaths among young children every year, and experiments show that higher carbon dioxide levels in the atmosphere are associated with protein losses of around 5 %.

Most laboratory studies suggest that higher carbon dioxide concentration leads to decreased calcification in coccolithophores, the tiny phytoplankton that contribute to the base of Southern Ocean food webs.

The farmers ensure that the crops in the greenhouses have enough water, nitrogen, phosphorus, and other nutrients in addition to higher carbon dioxide.

can only lead to higher carbon dioxide emissions.»

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.

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.

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.

We established a timeline of early climate research, showing that studies dating to the 1950s pointed to the link between increased fossil fuel use and higher carbon dioxide levels.

A new study by Stanford University atmospheric scientist Mark Jacobson has revealed that worsening air pollution and higher carbon dioxide emissions go hand - in - hand - the results suggest intensifying global warming will increase the number of smog - related deaths.

On longer timescales, plants grow more vigorously with higher carbon dioxide — a process known as carbon dioxide fertilisation.

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.

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.

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.

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

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

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.

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.

«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.

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.

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.

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

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.

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.

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

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.

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.

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.»

Scientists have found that high carbon dioxide levels cause squid to bungle attacks on their prey.

This is expected to have a cooling effect on surface temperatures, which would offset the warming effect of high carbon dioxide concentrations.

They are also exploring Chinese rice varieties for higher productivity under environments with higher temperatures and high carbon dioxide.

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

High carbon dioxide levels in an indoor workspace can cause drowsiness, headaches, and even affect concentration.