Skip to footer

Plants flowering much faster as global temperatures rise

Scientists have been underestimating the effects of climate change on plant growth, according to a recent study.

|
AP Photo/Eric Gay
A butterfly lands on a flowering Confetti Lantan plant in San Antonio, Texas. Scientists have commonly under-predicted the climate change's effects on plants, says new research.

| LONDON

Plants are flowering faster than scientists predicted in response to climate change, research in the United States showed on Wednesday, which could have
devastating knock-on effects for food chains and ecosystems.

Global warming is having a significant impact on hundreds of plant and animal species around the world, changing some breeding, migration and feeding patterns, scientists say.

Increased carbon dioxide concentration in the atmosphere from burning fossil fuels can affect how plants produce oxygen, while higher temperatures and variable rainfall patterns can change their behaviour.      

"Predicting species' response to climate change is a major challenge in ecology," said researchers at the University of California San Diego and several other U.S. institutions.

They said plants had been the focus of study because their response to climate change could affect food chains and ecosystem services such as pollination, nutrient cycles and water supply.

The study, published on the Nature website, draws on evidence from plant life cycle studies and experiments across four continents and 1,634 species. It found that some experiments had underestimated the speed of flowering by 8.5 times and growing leaves by 4 times.

"Across all species, the experiments under-predicted the magnitude of the advance - for both leafing and flowering - that results from temperature increases," the study said.

The design of future experiments may need to be improved to better predict how plants will react to climate change, it said.

Plants are essential to life on Earth. They are the base of the food chain, using photosynthesis to produce sugar from carbon dioxide and water. They expel oxygen which is needed by nearly every organism which inhabits the planet.

Scientists estimate the world's average temperature has risen by about 0.8 degrees Celsius since 1900, and nearly 0.2 degrees per decade since 1979.

So far, efforts to cut emissions of planet-warming greenhouse gases are not seen as sufficient to prevent the Earth heating up beyond 2 degrees C this century - a threshold scientists say risks an unstable climate in which weather extremes are common, leading to drought, floods, crop failures and rising sea levels.

The study can be viewed at http://www.nature.com/nature

You've read  of  free articles. Subscribe to continue.
Real news can be honest, hopeful, credible, constructive.
What is the Monitor difference? Tackling the tough headlines – with humanity. Listening to sources – with respect. Seeing the story that others are missing by reporting what so often gets overlooked: the values that connect us. That’s Monitor reporting – news that changes how you see the world.
editor@csmonitor.com
Subscribe
Mark Sappenfield
Editor

Dear Reader,

About a year ago, I happened upon this statement about the Monitor in the Harvard Business Review – under the charming heading of “do things that don’t interest you”:

“Many things that end up” being meaningful, writes social scientist Joseph Grenny, “have come from conference workshops, articles, or online videos that began as a chore and ended with an insight. My work in Kenya, for example, was heavily influenced by a Christian Science Monitor article I had forced myself to read 10 years earlier. Sometimes, we call things ‘boring’ simply because they lie outside the box we are currently in.”

If you were to come up with a punchline to a joke about the Monitor, that would probably be it. We’re seen as being global, fair, insightful, and perhaps a bit too earnest. We’re the bran muffin of journalism.

But you know what? We change lives. And I’m going to argue that we change lives precisely because we force open that too-small box that most human beings think they live in.

The Monitor is a peculiar little publication that’s hard for the world to figure out. We’re run by a church, but we’re not only for church members and we’re not about converting people. We’re known as being fair even as the world becomes as polarized as at any time since the newspaper’s founding in 1908.

We have a mission beyond circulation, we want to bridge divides. We’re about kicking down the door of thought everywhere and saying, “You are bigger and more capable than you realize. And we can prove it.”

If you’re looking for bran muffin journalism, you can subscribe to the Monitor for $15. You’ll get the Monitor Weekly magazine, the Monitor Daily email, and unlimited access to CSMonitor.com.

Subscribe to insightful journalism

QR Code to Plants flowering much faster as global temperatures rise
Read this article in
https://www.csmonitor.com/Science/2012/0502/Plants-flowering-much-faster-as-global-temperatures-rise
QR Code to Subscription page
Start your subscription today
https://www.csmonitor.com/subscribe