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:3/18/2016)... LONDON , March 18, 2016 ... Established Suppliers of Biometrics, ICT, Manned & Unmanned Vehicles, Physical ... & security companies in the border security market and ... and Europe has led ... your companies improved success. --> defence & ...
(Date:3/14/2016)... -- NXTD ) ("NXT-ID" or the "Company"), a ... airing of a new series of commercials on Time Warner ... st .  The commercials will air on Bloomberg TV, Fox ... Street show. --> NXTD ) ("NXT-ID" or the ... announces the airing of a new series of commercials on ...
(Date:3/10/2016)... 2016 --> ... "Identity and Access Management Market by Component (Provisioning, Directory ... by Organization Size, by Deployment, by Vertical, and by ... The market is estimated to grow from USD 7.20 ... at a Compound Annual Growth Rate (CAGR) of 12.2% ...
Breaking Biology News(10 mins):
(Date:5/19/2016)... Kansas City, KS (PRWEB) , ... May 19, ... ... and biomarker contract research organization (CRO) has welcomed Abu Siddiqui as Director, Large ... designing, managing and executing biologics, vaccine and translational biomarker discovery studies for preclinical ...
(Date:5/18/2016)... ... 2016 , ... Shimadzu Scientific Instruments announces its sponsorship of ... two-day camp will take place annually starting June 2016. It will provide qualifying ... preparation for a university academic program. , The laboratory- and technology-focused camp ...
(Date:5/18/2016)... ... May 18, 2016 , ... The Academy of Model Aeronautics has been ... of reaching a total of $1 million in awarded scholarships. , The AMA is ... graduates from across the nation has helped bring the total of AMA scholarships that ...
(Date:5/17/2016)... ... May 17, 2016 , ... ResearchDx, the premier ... based in Saudi Arabia, have formed a partnership to bring their expertise in ... Kingdom of Saudi Arabia (KSA). , The partnership addresses the specific needs ...
Breaking Biology Technology: