Sentences with phrase «by plant respiration»

A fraction of this carbon is immediately returned to the atmosphere as CO2 by plant respiration.

Not exact matches

In addition, plants also release oxygen to the atmosphere, which is subsequently used for respiration by heterotrophic organisms, forming a cycle.

«In these environments that are dominated by marine plants, photosynthesis and respiration cause large differences in CO2 concentrations and the addition of anthropogenic carbon make these day - to - night differences even larger than they would be without that extra carbon,» said George Waldbusser, an Oregon State marine ecologist and co-author on the study, who serves as Pacella's Ph.D. adviser.

In addition, the researchers checked the respiration of soil microorganisms by excluding plant roots with a metal ring in small soil areas and then measuring how much CO2 was released from the soil with a gas analyser.

The researchers are particularly interested in the carbon cycle, the uptake of CO2 by plants as they grow and the recycling of some of this carbon back into the atmosphere via respiration.

But the fluorescence map, an unexpected secondary capability, provides a more direct measure of carbon fluxes: the amount mopped up by plants during photosynthesis or released during respiration.

The scientists, led by agronomist Kenneth Cassman of the University of Nebraska and Shaobing Peng of the International Rice Research Institute in the Philippines, believe hotter nights may speed up respiration, causing the plant to work harder and waste energy.

In climate change scenarios simulated by the model GOTILWA + — within the Consolider - Ingenio project Montes and the research project Med - Forestream — , net primary productivity of Spanish forests (how much carbon dioxide plants take in during photosynthesis minus how much carbon dioxide they release during respiration) will decrease from the second half of this century.

Researchers increased temperatures at the test plots by 3.4 degrees C, an increase that might happen by the end of the 21st century, and learned that plants grown and measured at those higher temperatures increased their leaf respiration by an average 5 percent, compared to plants in ambient temperatures.

Had the juvenile plants not been acclimated to the higher temperatures, their respiration would have increased by 23 percent over the plants in ambient temperatures.

But day and night, plants, microbes and animals like humans are always producing CO2 by respiration, which is the breaking down of organic material (food) to get the energy out of it, releasing CO2 in the process.

They suggest this «pause» in the acceleration of carbon dioxide concentrations was, in part, due to the effect of the temporary slowdown in global average surface warming during that same period on respiration, the process by which plants and soils release CO2.

Later studies suggested that respiration by plant leaves can be an important source of error in the calculation of insect feed intake using gravimetric methods [45] and can cause major errors in energy budget studies of plant - feeding insects [46].

greenhouse gas produced by animals during respiration and used by plants during photosynthesis.

CO2 record are dominated by tropical deforestation variations, and terrestrial carbon cycle changes (respiration in soils, deciduous plants, droughts etc.).

Since the amounts absorbed or emitted by plant photosynthesis and animal respiration are an order of magnitude greater than those emitted by humans, it is clear that a slight shift in either of these could represent a major shift in the balance.

So it is quite likely that plant photosynthesis (including that happening in the ocean from phytoplankton) could well be constrained by CO2 concentration at 280 ppmv, with a slightly higher input from animal respiration plus emissions from the Earth's interior balancing out the natural decay rate.

Was this «decay rate» offset in the past by slightly higher animal respiration than plant photosynthesis, plus unknown CO2 emissions from submarine volcanoes and fissures in Earth's crust?

Since decreased plant and soil respiration could not explain the drop in carbon dioxide entering the atmosphere in 1992 and 1993, Gu and his colleagues deduced that enhanced photosynthesis by plants must be involved.

This produces carbohydrates that the trees turn into sugars, to be burnt off in respiration or, by another chemical process, turned into new plant - matter.

CO2 and CH4 are naturally occurring, generated by plant and animal respiration and decomposition.

Now multiply your breathing by the respiration of every plant, fungus, bacteria, human being and other animals.

Here's Merriam Webster's version: Main Entry: carbon dioxide Function: noun: a heavy colorless gas CO 2 that does not support combustion, dissolves in water to form carbonic acid, is formed especially in animal respiration and in the decay or combustion of animal and vegetable matter, is absorbed from the air by plants in photosynthesis, and is used in the carbonation of beverages I know you'll all correct me if i'm wrong in stating if CO2 has no scientific facts supporting global warming based upon a factor of greenhouse gases (as opposed to solar radiation in another post, which would be defined by variations in earth, space, or similar factors), then where does science determine that CO2 «disolves in water to form carbonic acid» and is «absorbed from the air by plants in photosythesis»?

I don't think proper context is provided for example when human carbon dioxide emissions are compared with natural exchanges (such as absorption by plants and respiration by animals).

Carbon fixed into plants is then cycled through plant tissues, litter and soil carbon and can be released back into the atmosphere by plant, microbial and animal respiration and other processes (e.g. forest fires) on a very wide range of time scales (seconds to millennia).

Therefore, the increase in oxygen in the atmosphere from an increase in CO2 would be more than offset by the increase in the consumption of oxygen when a plant undergoes cellular respiration which happens 24 hours a day.

Climate change increases the fraction of emissions that remain airborne by suppressing ocean uptake, enhancing soil respiration and reducing plant NPP.

Although beetles and plants are both effectively ectothermic, and thus sensitive indicators of ambient temperature, beetles can better regulate their temperature under cold conditions by physiological mechanisms, such as increased respiration (Morgan and Bartholomew, 1982), and behavioral mechanisms, such as burrowing (Strathdee and Bale, 1998).

Last, the combined respiration of the plants in the greenhouse - collectively an enormous evaporative surface - cools the air and helps to reduce the «heat island effect» created by the typical black tar roof.

I found this site that indicates that for some types of plants the minimum CO2 level (compensation point, that is, where CO2 produced by the plant's cell respiration equals that made by photosynthesis) is somewhere lower than 100 ml / litre (equivalent to 100ppm).