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:1/11/2017)... Intoxalock, a leading ignition interlock provider, has ... patent-pending calibration device. With this new technology, Intoxalock is ... data logs and process repairs at service center locations, ... drunk driving through the application of cutting-edge technologies is ... also for the customer who can get back on ...
(Date:1/6/2017)... , Jan. 6, 2017  Privately-held CalciMedica, ... studies in healthy volunteers of a novel calcium ... treat acute pancreatitis. Acute pancreatitis, ... a mild disorder, but can be very serious.  In ... and sepsis, where extended hospital stays, time in ...
(Date:1/6/2017)... Calif. , Jan. 5, 2017  Delta ID ... its iris scanning technology for automotive at CES® 2017. ... GNTX ) to demonstrate the use of iris ... identify and authenticate the driver in a car, and ... during the driving experience. Delta ID and ...
Breaking Biology News(10 mins):
(Date:1/14/2017)... (PRWEB) , ... January 14, 2017 , ... ... a new service providing complete end-to-end genome assemblies to researchers around the globe. ... eliminates a major obstacle in answering a wide range of scientific questions. ...
(Date:1/13/2017)... ... January 13, 2017 , ... ... an organic compound called fulvic acid that farms, greenhouses and hydroponics operations use ... cannabis are among the fastest growing segments of customers using this high grade ...
(Date:1/12/2017)... (PRWEB) , ... January 12, 2017 , ... Each year, ... Eureka Index – a process that evaluates the patent estate of a company, its ... LLC , a biomedical firm leading the way in technologies that transform energy sources ...
(Date:1/12/2017)... DC , January 12, 2017 ... up the world,s biggest facility for producing mycorrhizae. The ... the nutrient tapping potential of mycorrhizae and developed a ... ... (Logo: http://mma.prnewswire.com/media/456932/PRNE_TERI_Logo.jpg) The TERI facility ...
Breaking Biology Technology: