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:3/28/2017)... March 28, 2017 The report ... (Camera, Monitors, Servers, Storage Devices), Software (Video Analytics, VMS), ... - Global Forecast to 2022", published by MarketsandMarkets, the ... and is projected to reach USD 75.64 Billion by ... 2022. The base year considered for the study is ...
(Date:3/24/2017)... -- Research and Markets has announced the addition of ... - Industry Forecast to 2025" report to their offering. ... The Global Biometric Vehicle ... around 15.1% over the next decade to reach approximately $1,580 million ... estimates and forecasts for all the given segments on global as ...
(Date:3/22/2017)... Lithuania , March 21, 2017   ... and object recognition technologies, today announced the release ... kit (SDK), which provides improved facial recognition using ... cameras on a single computer. The new version ... to improve accuracy, and it utilizes a Graphing ...
Breaking Biology News(10 mins):
(Date:5/16/2017)... ... May 16, 2017 , ... ... Office (USPTO) for a wireless electrocardiogram (ECG or EKG) acquisition and monitoring device. ... integrated into clothing, or secured directly onto the skin, making them significantly easier ...
(Date:5/16/2017)... MA (PRWEB) , ... May 16, 2017 , ... On ... have an ideal audience for introducing the advance in stem cell medicine that his ... Tuesday will be the second day of the Alliance for Regenerative Medicine’s first partnering ...
(Date:5/15/2017)... ... May 15, 2017 , ... ... the clinical skincare brand has today launched its first-ever cross-medium campaign, #StandFirm, with ... shared across digital and social media channels, emphasizing Algenist’s stance on individuality and ...
(Date:5/11/2017)... 11, 2017   BioLife Solutions , Inc. (NASDAQ: ... proprietary clinical grade cell and tissue hypothermic storage ... today reported operational highlights and financial results for the first ... sales reached a new high of $2.4 million in the ... same period in 2016. Revenue growth was driven by sales ...
Breaking Biology Technology: