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:6/14/2017)... PARIS , June 15, 2017  IBM (NYSE: IBM ... the international tech event dedicated to developing collaboration between startups ... on June 15-17. During the event, nine startups will ... deliver value in various industries. ... in the international market, with a 30 percent increase in ...
(Date:4/24/2017)... , April 24, 2017 ... and partner with  Identity Strategy Partners, LLP (IdSP) ... "With or without President Trump,s March 6, 2017 ... Terrorist Entry , refugee vetting can be instilled with ... resettlement. (Right now, all refugee applications are suspended ...
(Date:4/13/2017)... , April 13, 2017 According to a new ... Authentication, Identity Analytics, Identity Administration, and Authorization), Service, Authentication Type, Deployment Mode, ... IAM Market is expected to grow from USD 14.30 Billion in 2017 ... (CAGR) of 17.3%. ... MarketsandMarkets Logo ...
Breaking Biology News(10 mins):
(Date:10/11/2017)... 11, 2017  VMS BioMarketing, a leading provider of patient ... Clinical Nurse Educator (CNE) network, which will launch this week. ... among health care professionals to enhance the patient care experience ... and other health care professionals to help women who have ... ...
(Date:10/11/2017)... ... October 11, 2017 , ... A new study published ... frozen and fresh in vitro fertilization (IVF) transfer cycles. The multi-center ... success. , After comparing the results from the fresh and frozen transfer cohorts, ...
(Date:10/10/2017)... , ... October 10, 2017 ... ... cancer-focused pharmaceutical company advancing targeted antibody-drug conjugate (ADC) therapeutics, today confirmed licensing ... HPLN (Hybrid Polymerized Liposomal Nanoparticle), a technology developed in collaboration with Children’s ...
(Date:10/10/2017)... DALLAS , Oct. 10, 2017 International research firm ... IoT Strategy, will speak at the TMA 2017 Annual Meeting , ... key trends in the residential home security market and how smart safety ... ... "The ...
Breaking Biology Technology: