Navigation Links
Where have all the flowers gone?
Date:6/16/2011

It's summer wildflower season in the Rocky Mountains, a time when high-peaks meadows are dotted with riotous color.

But for how long?

Once, wildflower season in montane meadow ecosystems extended throughout the summer months. But now scientists have found a fall-off in wildflowers at mid-season.

They published their results, funded by the National Science Foundation (NSF), in the current issue of the Journal of Ecology.

"Shifts in flowering in mountain meadows could in turn affect the resources available to pollinators like bees," says David Inouye of the University of Maryland, currently on leave in NSF's Division of Environmental Biology.

Inouye and colleagues George Aldridge and William Barr of the Rocky Mountain Biological Laboratory, Jessica Forrest of the University of California at Davis, and Abraham Miller-Rushing of the USA National Phenology Network in Tucson, Ariz., found that such changes could become more common as climate change progresses.

"Some pollinators with short periods of activity may require only a single flower species," write the ecologists in their paper, "but pollinators active all season must have flowers available in sufficient numbers through the season."

For example, bumblebees, important pollinators in many regions, need a pollen and nectar supply throughout the growing season to allow the queen bee to produce a colony.

As mid-summer temperatures have warmed in places like the Elk Mountains of Colorado, the researchers have found that the mid-season decline in flowering totals is ecosystem-wide.

"These meadows are heavily affected by snowmelt and temperature," says Inouye. "Wildflowers use information from these natural cues to 'know' when it's time to unfurl their petals."

The early-season climate is becoming warmer and drier in the high altitudes of the southern Rocky Mountains.

These changing conditions are altering moisture availability and hence flowering timing in sub-alpine meadows, says Inouye. The result is a mid-season decline in number of wildflowers in bloom.

Such changes in seasonal flower availability across large areas, or in individual habitats, could have serious consequences for entire pollinator populations, says Inouye, which include not only bees, but hummingbirds and others that feed on pollen and nectar.

Over the long term, he and colleagues believe, the changes could affect animal-pollinated plants.

If bees and hummingbirds need flowers, flowers need hummingbirds and bees.

And they all need a high-meadow ecosystem that changes at its own pace, say the scientists, not one moving in fast-forward in tandem with warmer temperatures.

Otherwise those sultry days and nights, especially in high summer, may leave Colorado mountain meadows empty, along with their wildflowers, and the pollinators that depend on them, vanished in the shimmering heat.


'/>"/>

Contact: Cheryl Dybas
cdybas@nsf.gov
703-292-7734
National Science Foundation
Source:Eurekalert  

Related biology news :

1. Latitude and rain dictated where species lived
2. Earths biodiversity: What do we know and where are we headed?
3. Water, water, everywhere… but is it safe to drink?
4. Where did flowers come from?
5. Water, water everywhere focus of new sustainability project
6. Where unconscious memories form
7. Where did you get those eyes and that brain?
8. Tuning into cell signals that tell where sensory organs will form inside the ear
9. Where do the drugs go?
10. Next generation surgical robots: Wheres the doctor?
11. Where the wild veggies are
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Where have all the flowers gone?
(Date:6/20/2016)... 20, 2016 Securus Technologies, a leading ... for public safety, investigation, corrections and monitoring announced ... it has secured the final acceptance by all ... Managed Access Systems (MAS) installed. Furthermore, Securus will ... be installed by October, 2016. MAS distinguishes between ...
(Date:6/9/2016)... , June 9, 2016 ... Police deploy Teleste,s video security solution to ensure the safety ... France during the major tournament Teleste, ... communications systems and services, announced today that its video security ... to back up public safety across the country. ...
(Date:6/2/2016)... --  The Weather Company , an IBM Business (NYSE: ... in which consumers will be able to interact with IBM ... voice or text and receive relevant information about the product ... have long sought an advertising solution that can create a ... and valuable; and can scale across millions of interactions and ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... ... June 23, 2016 , ... STACS DNA Inc., the sample ... the Arkansas State Crime Laboratory, has joined STACS DNA as a Field Application Specialist. ... said Jocelyn Tremblay, President and COO of STACS DNA. “In further expanding our capacity ...
(Date:6/23/2016)... 2016  Blueprint Bio, a company dedicated to identifying, ... community, has closed its Series A funding round, according ... "We have received a commitment from Forentis Fund ... to meet our current goals," stated Matthew Nunez ... to complete validation on the current projects in our ...
(Date:6/23/2016)... San Francisco, CA (PRWEB) , ... June 23, ... ... capture (EDC) software, is exhibiting at the Pennsylvania Convention Center and will showcase ... DIA Annual conference. ClinCapture will also be presenting a scientific poster on Disrupting ...
(Date:6/23/2016)... 2016  Amgen (NASDAQ: AMGN ) today ... life sciences incubator to accelerate the development of ... space at QB3@953 was created to help high-potential life ... many early stage organizations - access to laboratory infrastructure. ... launched two "Amgen Golden Ticket" awards, providing each winner ...
Breaking Biology Technology: