Navigation Links
Scientists may have solved an ecological riddle
Date:6/19/2008

In a paper published this week in Nature, the authors including Dr Ying Ping Wang from The Centre for Australian Weather and Climate Research say that nitrogen fixation has long been recognised as an important process in controlling responses of many ecosystems particularly boreal and temperate forests to global environmental change.

"However, there have been significant discrepancies between real-world observations and the theories used to predict nitrogen fixation patterns across major sectors of the land biosphere," Dr Wang says.

"We believe our theory provides a unifying framework for nitrogen fixation which can explain the different levels of fixation observed in a wide range of climatically and geographically-defined terrestrial ecosystems right around the world," he says.

The team found that nitrogen-fixing species in phosphorous-limited tropical savannas and lowland tropical forests enjoyed a clear advantage over nitrogen-fixing species found in mature forests at high latitudes, where modern-day temperatures appeared to have constrained their numbers and nitrogen-fixing abilities.

The team developed two new hypotheses for understanding the distribution of nitrogen fixing plants across global ecosystems.

The first is that temperature constrains the distribution of nitrogen fixation, contributing to the lack of nitrogen-fixing trees in mature forests at high latitudes.

The second that nitrogen-fixing plants hold an advantage in terms of their ability to acquire additional phosphorus provides an explanation for the persistence of nitrogen-fixing plants in mature lowland tropical forest and savannas.

"Working on the basis of these two hypotheses we have produced a new model, which should help scientists to better predict the effect of climate change on different ecosystems and the interactions between terrestrial biosphere and climate change at decadal-to-century time scales," Dr Wang says.


'/>"/>

Contact: Bill Stephens
Bill.Stephens@csiro.au
61-262-766-152
CSIRO Australia
Source:Eurekalert  

Related biology news :

1. Indiana U scientists uncover potential key to better drugs to fight toxoplasmosis parasite
2. New bee checklist lets scientists link important information about all bee species
3. Scientists discover DNA knot keeps viral genes tightly corked inside shell
4. Scientists find potential protein biomarkers for growth hormone
5. Scientists confirm that parts of earliest genetic material may have come from the stars
6. Scientists find 245 million-year-old burrows of land vertebrates in Antarctica
7. Brain stem cells can be awakened, say Schepens scientists
8. Scientists demonstrate feasibility of preventing malaria parasite from becoming sexually mature
9. New fingerprint breakthrough by forensic scientists
10. Young mineral scientists rock!
11. Scientists discover stinging truths about jellyfish blooms in the Bering Sea
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Scientists may have solved an ecological riddle
(Date:3/24/2017)... Research and Markets has announced the addition ... Trends - Industry Forecast to 2025" report to their offering. ... The Global Biometric ... of around 15.1% over the next decade to reach approximately $1,580 ... market estimates and forecasts for all the given segments on global ...
(Date:3/22/2017)... VILNIUS, Lithuania , March 21, 2017 /PRNewswire/ ... identification and object recognition technologies, today announced the ... development kit (SDK), which provides improved facial recognition ... safety cameras on a single computer. The new ... algorithms to improve accuracy, and it utilizes a ...
(Date:3/20/2017)... At this year,s CeBIT Chancellor Dr. Angela Merkel visited ... to the DERMALOG stand together with the Japanese Prime Minster Shinzo Abe. ... the largest German biometrics company the two government leaders could see the ... well as DERMALOGĀ“s multi-biometrics system.   Continue Reading ... ...
Breaking Biology News(10 mins):
(Date:6/14/2017)... , June 14, 2017   Micralyne Inc., ... and a primary supplier of sensors, is pleased ... Placentia, California to develop and ... (TSV).  The joint development of this technology leverages ... a truly flexible and cost effective Metal TSV ...
(Date:6/14/2017)... ... June 13, 2017 , ... ... the phenotype of an organism on a molecular level that is closely ... processing remain major bottlenecks to biomarker discovery in clinical-based metabolomics research. , ...
(Date:6/13/2017)... ... June 13, 2017 , ... Three ... Phase 1 Ventures (P1V) program. PolyCeramX, Recensa Therapeutics and Regennera, all P1V participants, ... , Phase 1 Ventures is a startup accelerator that helps launch and ...
(Date:6/13/2017)... PA and London UK (PRWEB) , ... June 13, 2017 , ... ... for Information and Study on Clinical Trial Participation (CISCRP) and the Society for Clinical ... Expert speakers will provide background on the purpose of eConsent and the ability for ...
Breaking Biology Technology: