Navigation Links
Do Australia's giant fire-dependent trees belong in the rainforest?
Date:10/31/2012

Australia's giant eucalyptus trees are the tallest flowering plants on earth, yet their unique relationship with fire makes them a huge puzzle for ecologists. Now the first global assessment of these giants, published in New Phytologist, seeks to end a century of debate over the species' classification, a debate which may determine their future.

Gigantic trees are as rare as they are awe inspiring. Of the 100,000 global tree species only 50, less than 0.005%, reach over 70 meters in height. While many of these giants live in Pacific North America, Borneo and similar habitats, 13 are eucalypts which live in Southern and Eastern Australia.

The tallest flowering plant to call Australia home is Eucalyptus regnans, with temperate eastern Victoria and Tasmania being home to the six tallest recorded species of the genus. One Tasmanian tree was measured at 99.6 m, while a tree in Victoria achieved the historic record of 114.3 m.

"The conifers of North America are often thought of as the largest trees on earth, yet the flowering eucalyptus trees of Australia reach comparable heights," Professor David Bowman, from the University of Tasmania's School of Plant Science. "This is surprising as Australia is the world's driest inhabited continent. Yet, this apparent paradox may explain the evolutionary advantage of gigantism in trees."

Wildfires are common in dry and arid environments such as Australia, but Eucalyptus regnans has evolved a unique dependency on fire for regeneration. While fire may kill the trees, their seeds are protected in aerial capsules, which are then released on to the scorched earth. The fire not only clears away potential seed predators and any forest canopy which may block sunlight; it also releases nutrients in the soil which encourages seed growth.

"This unique relationship with fire helps us understand how these giants evolved," said Bowman. "Our research suggests gigantism in eucalypts evolved op
'/>"/>

Contact: Ben Norman
Sciencenewsroom@wiley.com
44-012-437-70375
Wiley
Source:Eurekalert

Page: 1 2

Related biology news :

1. Giant squids giant eyes: The better to see hungry whales with
2. Jurassic pain: Giant flea-like insects plagued dinosaurs 165 million years ago
3. First satellite tag study for manta rays reveals habits and hidden journeys of ocean giants
4. Big-mouthed babies drove the evolution of giant island snakes
5. Ancient giant turtle fossil revealed
6. Giant raft of data to help us understand disease
7. Engineering technology reveals eating habits of giant dinosaurs
8. Study of giant viruses shakes up tree of life
9. Protecting living fossil trees
10. Mesquite trees displacing Southwestern grasslands
11. Chimpanzee ground nests offer new insight into our ancestors descent from the trees
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/12/2015)... , March 12, 2015 IriTech, a ... a member of the Texas Instruments Design Network, announced ... has demonstrated its IriShield USB MK2120U device during ... facility for pension distribution. The iris ... to be marketed in India ...
(Date:3/12/2015)... VIEW, Calif. , March 12, 2015 /PRNewswire/ ... with Complimentary Registration here: http://bit.ly/1G7Os0L . SPEAKERS: ... Manager Aravind SeshagiriPhoto - http://photos.prnewswire.com/prnh/20150311/181111 ... in order to compete in several different markets ... market is currently witnessing an uptrend. ...
(Date:3/10/2015)... NEW YORK , March 10, 2015  Continuing ... and the Unexpected, Hammacher Schlemmer introduces The Eye ... user,s identity before granting access to secure websites or ... trusted to verify travelers at international borders, the device ... 240 distinctive pattern points of the iris, converting them ...
Breaking Biology News(10 mins):Indian States See IriTech's Scanner Bolstering Efficiency of Authentication for Aadhaar 2Indian States See IriTech's Scanner Bolstering Efficiency of Authentication for Aadhaar 3Biometrics Key to Future Growth in Healthcare, Retail and Financial Markets 2Biometrics Key to Future Growth in Healthcare, Retail and Financial Markets 3Hammacher Schlemmer Introduces The Eye Scanning Password Authenticator 2
... are reporting the first evidence from human research that ... antioxidants and other so-called phytochemicals improve memory. They ... clinical trials to determine whether blueberries really deserve their ... the study appears in ACS, Journal of Agricultural ...
... jury could decide a man,s guilt through mind reading? What ... And what constitutes ,intent, to commit murder? These are just ... issue of WIREs Cognitive Science, the latest interdisciplinary project from ... first two years. In the article "Neurolaw," in ...
... who have identified brain networks damaged in Parkinson,s disease have ... before symptoms appear. And what,s more, parts of the network ... the brain. "We were surprised," said Chris Tang, ... Medical Research in Manhasset, NY, and an author of the ...
Cached Biology News:Mind reading, brain fingerprinting and the law 2Brain abnormalities in Parkinson's patients develop before symptoms occur 2
(Date:3/25/2015)... Chicago, IL (PRWEB) March 25, 2015 ... Australia in the latter part of 2014, ITRA Global ... ITRA Global, the International Tenant Representative Alliance, based in ... dedicated to representing tenants and occupiers of commercial real ... real estate advisory firm in Poland that exclusively advises ...
(Date:3/25/2015)... , March 25, 2015  The Technology Association of ... association dedicated to the promotion and economic advancement of ... Streamline Health as one of its Top 40 Innovative ... will recognize this prestigious group at the 2015 Georgia ... Cobb Galleria Centre. TAG,S Top 40 Awards ...
(Date:3/25/2015)... 2015 FDNA®, the pioneer in ... Face2Gene, allowing geneticists around the globe to ... as mobile devices. Face2Gene® facilitates detection of facial dysmorphic ... comprehensive and up-to-date genetic references. The date of the ... 2015, in Salt Lake City, UT ...
(Date:3/25/2015)... , March 25, 2015   Demy-Colton Life Science ... investor and business development conferences exclusively for the biopharmaceutical ... launching the Biotech CEO Summit. The ... that brings together biotech industry leaders who are united ... innovation while reaping the rewards of biotech,s new golden ...
Breaking Biology Technology:International Organization Expands its Global Reach to Warsaw, Poland 2Streamline Health, Inc. Named a TAG Top 40 Innovative Technology Company 2Streamline Health, Inc. Named a TAG Top 40 Innovative Technology Company 3Streamline Health, Inc. Named a TAG Top 40 Innovative Technology Company 4FDNA Releases a Multi-Platform Version of Face2Gene, a Genetic Search and Reference Solution at ACMG 2015 2Biotech CEO Summit to Bring Key Biotech Leaders Together in Industry Brain Trust 2
... MS, EDMONTON, March 24 /PRNewswire-FirstCall/ - BioMS Medical ... multiple sclerosis (MS), today,announced that Mr. Kevin Giese, President ... the Biotech Industry" Conference in New York., ... Time), WHERE: The Millennium Broadway Hotel & ...
... 24 Finesse Solutions, LLC, a,manufacturer of measurement ... the release of TruFluor(TM), a single use optical,dissolved ... March,26, 2008., The TruFluor(TM) dissolved oxygen and ... disposable sheath, an optical reader,and a transmitter. The ...
... Martek Biosciences,(Nasdaq: MATK ) announced today the availability ... vegetarian form of DHA,omega-3 for brain, eye and heart ... mg per gram of life,sDHA and contains no soy ... applications where,allergens and labeling are concerns., "Our new ...
Cached Biology Technology:BioMS Medical to present at BioCentury Conference 2Finesse Introduces TruFluor(TM) DO, a Single-Use Optical Dissolved Oxygen Sensor and Transmitter 2Martek's life'sDHA(TM) Now Available in Protein-free Powder 2Martek's life'sDHA(TM) Now Available in Protein-free Powder 3
... The Zero Blunt ... for Sequencing is designed ... sequencing of blunt-end PCR ... provides 5-minute TOPO Cloning ...
...
nucleophosmin (nucleolar phosphoprotein B23, numatrin), mRNA...
Acrylamide PAGE 40% Solution, 1 l. Category: Electrophoresis Systems & Standards & Reagents, Electrophoresis Standards and Reagents, Gel Casting Chemicals....
Biology Products: