Navigation Links
Of mice, men, trees and the global carbon cycle

A team led by a University of Minnesota researcher has found a universal rule that regulates the metabolism of plants of all kinds and sizes and that may also offer a key to calculating their carbon dioxide emissions, a number that must be known precisely in order to construct valid models of global carbon dioxide cycling.

Emissions of the gas occur in both plants and animals through the process of respiration; Peter Reich, a professor of forest resources, and his colleagues have found that plant emissions can be deduced from the nitrogen content of any plant. The study also reveals that the respiration, or metabolic, rates of plants and animals follow different laws of scaling with respect to body size. The work will be published in the Jan. 26 issue of the journal Nature.

In revealing nitrogen content as the key to plant metabolic rates, the work uncovered a fundamental difference between plants and animals in how their metabolism varies with size. The larger an animal, the slower its metabolism on a per-weight basis. Thus, although an elephant burns many more calories per hour than a mouse, the mouse has a much higher rate per pound of body weight. An elephant with the same rate per pound as a mouse would generate so much heat it would have serious problems maintaining body temperature and eating fast enough to keep up. Instead of a one-to-one ratio between body size and metabolic rate, as an animal's body weight quadruples, its respiration rate only triples.

In contrast, when Reich and his colleagues studied 500 plants from 43 species, they found that within a wide range of plant sizes, a quadrupling of weight leads to a quadrupling of respiration rate. The important variable was nitrogen content: The more nitrogen in a plant, the more it respired and the more carbon dioxide the plant emitted. Similarly, if two plants were the same size but had different concentrations of nitrogen in their tissues, the one with the higher nitrogen concen
'"/>

Source:University of Minnesota


Page: 1 2 3

Related biology news :

1. NSAID drug protects against intestinal tumors in mice, despite poor diet and gene losses
2. In young mice, gregariousness seems to reside in the genes
3. Poplar trees redirect resources in response to simulated attack
4. Family trees of ancient bacteria reveal evolutionary moves
5. Alien woodwasp, threat to US pine trees, found in N.Y.
6. Shade trees getting scorched by plant disease
7. Seeing the forest and the trees
8. Why Christmas trees are not extinct
9. Amazon trees much older than assumed, raising questions on global climate impact of region
10. Underdogs in the understory: Study suggests nature favors rarer trees
11. Genome info from plant destroyers could save trees, beans and chocolate
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: mice men trees and the global carbon cycle

(Date:9/30/2014)... Researchers of Ludwig-Maximilians-Universitaet (LMU) in Munich report that ... cells more sensitive to chemotherapeutic drugs. They have ... a new target for anti-tumor agents. , ... Professor Stephan Sieber of the Technische Universitt Mnchen ... a potential new weapon in the fight against ...
(Date:9/30/2014)... 2014  Spectra Automation, a trusted supplier ... and power generation industries, announced today the ... an easy-to-use and cost-effective data collection, analysis ... laboratories. Most upstream process ... systems. Accessing and consolidating data from these ...
(Date:9/29/2014)... of gut bacteria called Clostridium ramosum , coupled with ... work is published this week in mBio , the ... , A research team from the German Institute of Human ... bacteria including C. ramosum gained weight when fed ... ramosum were less obese even when consuming a high-fat ...
Breaking Biology News(10 mins):Cancer therapy: Driving cancer cells to suicide 2Spectra Automation Introduces RECONN Bioprocess Manager 2Gut bacteria promote obesity in mice 2
... deposition associated with industry and agriculture can drive soils ... and polluting surface waters, according to a new study ... study, conducted in the Tatra Mountains of Slovakia by ... of Sciences, and the U.S. Geological Survey, shows what ...
... both physically and mentally, but genetically everyone is ... for decades now. But with population research becoming ... Tim Caulfield is concerned that genetic research could ... Nobel Prize winning geneticist James Watson claimed there ...
... new study by researchers at UC Davis Medical Center ... patients may be a result of their brains not ... drops in blood oxygen levels are more common than ... senior author Masud Seyal, a professor of neurology at ...
Cached Biology News:Acid soils in Slovakia tell somber tale 2Could genetic research awaken racist attitudes? 2Drops in blood oxygen levels may be key to sudden death in some epilepsy patients 2Drops in blood oxygen levels may be key to sudden death in some epilepsy patients 3
(Date:10/1/2014)... 30, 2014 This report analyzes ... US$ Million by the following Product Segments: ... Specific end-use segments also analyzed are Pharmaceuticals ... The report provides separate comprehensive analytics for ... East, and Latin America. Annual estimates and ...
(Date:9/30/2014)... news release is available in German . ... the Technische Universitt Mnchen (TUM) have demonstrated a new ... experiments show that future computer chips could be based ... As the main enabling technology of the semiconductor industry ... limits, the TUM researchers and collaborators at the University ...
(Date:9/30/2014)... Shimadzu Scientific Instruments has released ... highly precise tool for measuring displacement in rubber ... 1000-mm maximum movement distance, the DSES-1000 can measure ... length of 10 mm. In addition, it achieves ... stroke and within +/- 100 µm below 50-mm ...
(Date:9/30/2014)... Jose, California (PRWEB) September 30, 2014 ... measure the level of each type of cholesterol carrier ... since the presence of excessive cholesterol levels in the ... a precursor condition to heart attack and other cardiovascular ... fatality worldwide, therefore testing for cholesterol levels on a ...
Breaking Biology Technology:Global Specialty Enzymes Industry 2Global Specialty Enzymes Industry 3Global Specialty Enzymes Industry 4Global Specialty Enzymes Industry 5Global Specialty Enzymes Industry 6Global Specialty Enzymes Industry 7Global Specialty Enzymes Industry 8Global Specialty Enzymes Industry 9Global Specialty Enzymes Industry 10Global Specialty Enzymes Industry 11Global Specialty Enzymes Industry 12Global Specialty Enzymes Industry 13Global Specialty Enzymes Industry 14Global Specialty Enzymes Industry 15Global Specialty Enzymes Industry 16Global Specialty Enzymes Industry 17Global Specialty Enzymes Industry 18Global Specialty Enzymes Industry 19Global Specialty Enzymes Industry 20Global Specialty Enzymes Industry 21Global Specialty Enzymes Industry 22Global Specialty Enzymes Industry 23Global Specialty Enzymes Industry 24Global Specialty Enzymes Industry 25Global Specialty Enzymes Industry 26A new dimension for integrated circuits: 3-D nanomagnetic logic 2A new dimension for integrated circuits: 3-D nanomagnetic logic 3Shimadzu’s New Long-Travel Extensometer Increases Precision for Soft Material Testing 2Surging Diabetic, Obese and Hypertensive Population Drives the Global Cholesterol Testing Market, According to New Report by Global Industry Analysts, Inc. 2Surging Diabetic, Obese and Hypertensive Population Drives the Global Cholesterol Testing Market, According to New Report by Global Industry Analysts, Inc. 3Surging Diabetic, Obese and Hypertensive Population Drives the Global Cholesterol Testing Market, According to New Report by Global Industry Analysts, Inc. 4
... Lund University in Sweden have discovered a new stem cell ... several different cell types -- most importantly, they can form ... finding to develop methods to heal and repair disease and ... biopsies, the researchers for the first time found stem cells ...
... April 19, 2012  Phigenics LLC, an innovative water management ... paper that demonstrates up to 33% false-positive test results ... methods. A false-positive result means the test indicated ... detectable levels when in fact it was below detectable ...
... Biofuels, LLC, a joint venture between BP and ... collaboration with Fagen, Inc. for the introduction of ... the world,s most experienced biofuels engineering, procurement and ... any other company.  They are the largest, most ...
Cached Biology Technology:New Stem Cell Found in the Brain 2New Stem Cell Found in the Brain 3Phigenics Research Challenges Accuracy Of Conventional Legionella Testing Protocol 2Phigenics Research Challenges Accuracy Of Conventional Legionella Testing Protocol 3Butamax™ and Fagen Announce Collaboration to Retrofit Ethanol Plants for Biobutanol Production 2
Mouse monoclonal antibody raised against a partial recombinant TPR. NCBI Entrez Gene ID = TPR...
... sample is a complex protein sample, ... when used with ReadyPrep 2-D starter ... sample can be used as a ... and protocol before using more difficult ...
... materials for 1,464 array sample elements. , ,Includes: ... , Blocker BSA in PBS (10X): 50 ml ... g , BupH Phosphate Buffered Saline: ... 2 x 10 ml ampules , SuperSignal West Pico ...
... Mouse polyclonal antibody raised ... Immunogen: ... 112 a.a) partial recombinant protein ... Accession Number: NM_130777 ...
Biology Products: