As the spring foliage grows, each plant, like an entrepreneur, builds its leaves according to an economic strategy. Some plants live like the proverbial hare, following a "live fast, die young" strategy; their leaves produce and consume energy quickly but soon "burn out" or fall victim to bad weather or hungry herbivores. Other leaves are more tortoiselike, taking a "live slowly and last long" approach. A new study has revealed the global continuum of leaf economics, documenting where 2,548 species growing at 175 sites fit along the "tortoise-hare" continuum. For the first time, scientists can equate plants in Amazonian rain forest, Minnesota prairie or Alaskan spruce woods using the same set of economic strategies. Moreover, a plants position on the continuum predicts how it will likely respond to climate change and other factors. The work will be published in the April 22 issue of the journal Nature.
"This is the most comprehensive study of the physiology of natural vegetation ever done," said author Peter Reich, professor of forest resources at the University of Minnesota. "Leaves are little factories. As a factory, each can make money (energy) in a big hurry, but at the risk of running down its equipment fast. Or, a factory can have a slow and steady output. Its fundamental tradeoff for every leaf, and the strategy it follows determines how it reacts to change." Besides Reich, authors of the paper were Ian Wright (first author) and Mark Westoby of Macquarie University, Australia, Jeannine Cavender-Bares and Jacek Oleksyn from the University of Minnesota, and a long list of researchers from every inhabited continent.
It all began in 1985, when Reich was a postdoctoral fellow at Cornell University. He compared the rates different plants captured and stored energy through photosynthesis and the rates they used energy--a process called respiration. He noticed that two fast-growing "hare" plants--poplar trees and soybeans--were more susceptible to ozone pollution than slower-growing "tortoise" pine trees.
Deane Morrison | EurekAlert!
Dispersal of Fish Eggs by Water Birds – Just a Myth?
19.02.2018 | Universität Basel
Removing fossil fuel subsidies will not reduce CO2 emissions as much as hoped
08.02.2018 | International Institute for Applied Systems Analysis (IIASA)
At the LASYS 2018, from June 5th to 7th, the Laser Zentrum Hannover e.V. (LZH) will be showcasing processes for the laser material processing of tomorrow in hall 4 at stand 4E75. With blown bomb shells the LZH will present first results of a research project on civil security.
At this year's LASYS, the LZH will exhibit light-based processes such as cutting, welding, ablation and structuring as well as additive manufacturing for...
There are videos on the internet that can make one marvel at technology. For example, a smartphone is casually bent around the arm or a thin-film display is rolled in all directions and with almost every diameter. From the user's point of view, this looks fantastic. From a professional point of view, however, the question arises: Is that already possible?
At Display Week 2018, scientists from the Fraunhofer Institute for Applied Polymer Research IAP will be demonstrating today’s technological possibilities and...
So-called quantum many-body scars allow quantum systems to stay out of equilibrium much longer, explaining experiment | Study published in Nature Physics
Recently, researchers from Harvard and MIT succeeded in trapping a record 53 atoms and individually controlling their quantum state, realizing what is called a...
The historic first detection of gravitational waves from colliding black holes far outside our galaxy opened a new window to understanding the universe. A...
A team led by Austrian experimental physicist Rainer Blatt has succeeded in characterizing the quantum entanglement of two spatially separated atoms by observing their light emission. This fundamental demonstration could lead to the development of highly sensitive optical gradiometers for the precise measurement of the gravitational field or the earth's magnetic field.
The age of quantum technology has long been heralded. Decades of research into the quantum world have led to the development of methods that make it possible...
02.05.2018 | Event News
13.04.2018 | Event News
12.04.2018 | Event News
22.05.2018 | Life Sciences
22.05.2018 | Earth Sciences
22.05.2018 | Trade Fair News