Navigation Links
After drought, ponds keep up with the Joneses
Date:10/15/2007

An ecologist at Washington University in St. Louis has discovered that after ponds dry up through drought in a region, when they revive, the community of species in each pond tends to be very similar to one another, like so many suburban houses made of ticky tacky.

Jonathan M. Chase, WUSTL associate professor of biology in Arts & Sciences, and director of the universitys Tyson Research Center, created 20 artificial ponds out of tanks that hold 300 gallons of water. He made each pond community exactly the same in their environmental conditions, but varied the timing in which he added many species to the community lots of species, especially dragonflies, water-bugs, frogs, and even algae, happily colonized the ponds on their own accord.

As the communities thrived, most of the ponds diverged from each other some had only between 10 and 20 percent of species in common with other ponds. This factor was due to stochasticity, or randomness a plant introduced by a seed dropped from a duck, a frog having a lucky day, for instance.

But then Chase, having played beneficent god, played pernicious god, adding drought, normally random in nature, to one-half of the pond environments.

After the drought, the communities converged, and every community looked similar to each other, said Chase, who studies community assembly, among other areas of ecology. Its understandable that only certain kinds of species can stand the drought. When it comes to drought, there are wimpy species and hardy species. Several types of zooplankton, many water-bugs, and some frogs are the hardy ones. A wimpy species, perhaps surprisingly, is the bullfrog. Their tadpoles require two years to grow, so they often dont rebound very well from drought.

Some of the zooplankton have resting eggs that are deposited in mud. They rebound well when the ponds refill. Some frogs leave the pond when it dries up. Lots of different types of algae and one
'/>"/>

Contact: Tony Fitzpatrick
tony_fitzpatrick@wustl.edu
314-935-5272
Washington University in St. Louis
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Mouse brain cells rapidly recover after Alzheimers plaques are cleared
2. Bone Density Recovers After Teens Stop Injected Contraceptive
3. Youth With HIV Take More Risks After New Meds Introduced
4. After a time-shift, mixed signals from the circadian clock
5. Does vitamin C help prevent or treat the common cold? Maybe not, after all.
6. Stem cell treatment improves mobility after spinal cord injury
7. Bad aftertaste? New sensory on/off switch may cure bane of artificial sweetener search
8. Drug Offers Alternative to Surgical Treatment After Miscarriage
9. New type of rejection blocker protects kidneys after transplant
10. Menopause Symptoms May Come Back After Stopping Menopausal Hormone Therapy
11. After the yeast is gone bacteria continue to develop flavor of sparkling wine
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/21/2015)... 2015 High crime rate, ... boosting access control systems market in Saudi ... recently published report by TechSci Research " Saudi Arabia Access ... control systems market in Saudi Arabia ... access control systems market in the Kingdom is growing ...
(Date:4/14/2015)... YORK , April 14, 2015  HYPR ... IDentity Online (FIDO ® ) Alliance tm , ... specifications. FIDO members commit to share technology and ... methods that are interoperable, more secure and private, ... enable biometric identity verification that protects sensitive user ...
(Date:4/10/2015)... , April 10, 2015 Research ... of the "Security Competitive Profiles - NEC" ... , NEC will continue to supply a ... the market, with a company focus on the development ... Winning opportunities in the Asia-Pacific ...
Breaking Biology News(10 mins):Saudi Arabia Access Control Systems Market to Touch USD1.2 Billion by 2020 Says TechSci Research 2Saudi Arabia Access Control Systems Market to Touch USD1.2 Billion by 2020 Says TechSci Research 3HYPR Corp. Joins the FIDO Alliance 2HYPR Corp. Joins the FIDO Alliance 3NEC Security Competitive Profile 2015 2
... Veterinary Medicine have identified a gene in Labrador retriever dogs ... intense hunting or retrieving exercise, activities these dogs are trained ... hind limbs. In most cases, their legs get wobbly ... dogs may die. Labradors are the most common dog ...
... mean solar or wind power. In fact, the alternative ... engineering professor James Dumesic look a lot like the ... That,s because the new fuels are identical at the ... is where they come from. Funded by the ...
... have succeeded in tracing intricate biochemical networks involving a ... in specific tissues at particular moments in development. ... Krainer, Ph.D., both professors at CSHL and heads of ... call RNA splicing. Splicing is a key step ...
Cached Biology News:U of M researchers identify gene linked to common ailment in labrador retrievers 2New process derives 'green gasoline' from plant sugars 2CSHL team traces extensive networks regulating alternative RNA splicing 2CSHL team traces extensive networks regulating alternative RNA splicing 3CSHL team traces extensive networks regulating alternative RNA splicing 4
(Date:4/27/2015)... 27, 2015 tru Shrimp™ Systems announced ... Texas A&M University for the exclusive worldwide rights to ... raceway systems. The license agreement for the patented technology, ... to countries such as China, Taiwan, France, Germany, Italy, ... “We have had inquires from all over the world ...
(Date:4/25/2015)... (PRWEB) April 25, 2015 Join us ... 29th: Analyzing Kinase Inhibitor Residence Times using the Transcreener® ... of inhibitor residence times is increasingly being incorporated into ... can result in improved efficacy, increased therapeutic window and ... determined using immobilized ligand methods such surface plasmon resonance, ...
(Date:4/24/2015)... McKinney, Texas (PRWEB) April 24, 2015 ... products for use in applications such as animal ... fat and oil reduction in wastewater treatment plants ... be an exhibitor at the National Restaurant Association’s ... 16-19. , Representatives of the company will ...
(Date:4/24/2015)... , April 24, 2015  Navitas Life Sciences is ... as Head of Clinical and Regulatory Services. Shalabh is a ... a co-founder and CEO of Kinapse, as well as a ... Logo - http://photos.prnewswire.com/prnh/20150423/201261LOGO ... Tizzard commented "I am delighted to welcome Shalabh into ...
Breaking Biology Technology:tru Shrimp™ Systems Acquires Global Patent for Tidal Basin™ Shrimp Production 2BellBrook Labs Webinar: Analyzing Kinase Inhibitor Residence Times using the Transcreener® ADP Assay 2DryLet to Showcase Bio-React at the National Restaurant Association’s NRA Show 2015 May 16-19, 2015 in Chicago, Illinois 2Shalabh Kumar Joins Navitas Life Sciences to Lead their Clinical and Regulatory Services Teams 2
... COLOGNE, Germany and BANGALORE, India ... its seventh laboratory worldwide in Electronics City in,the Indian city ... The world,leader in independent safety and quality testing for solar ... test centre, which in particular will,offer services to India,s ...
... , PINE BROOK, N.J. , Aug. 4 ... company, announced today that it has been awarded a second ... for the advanced development of Anthim for the prevention and ... is in addition to $16.8 million already received ...
... 4 /PRNewswire-FirstCall/ - Aeterna Zentaris Inc. (NASDAQ: AEZS, TSX: ... endocrinology, will announce its second quarter 2010 financial and operating results before ... host a conference call and webcast to discuss these results later that ... , , ...
Cached Biology Technology:New Test Centre in India: TUV Rheinland Continues Worldwide Investment Programme for Solar Industry 2New Test Centre in India: TUV Rheinland Continues Worldwide Investment Programme for Solar Industry 3Elusys Awarded Additional $40.6 Million Under Existing U.S. Government Contract to Fund Advanced Development of Anthim, a New Treatment for Anthrax 2Elusys Awarded Additional $40.6 Million Under Existing U.S. Government Contract to Fund Advanced Development of Anthim, a New Treatment for Anthrax 3
... Immunogen: Synthetic phosphopeptide corresponding to ... Ser603 residue of rat Synapsin ... synapsin I when phosphorylated at ... Rat (positive control: rat brain ...
EMBP (FL-222)...
... PhosphatidylEthanolamine-Binding Protein (PEBP) does not share ... inhibitors. PEBP is expressed in ... ovary, muscle, and stomach. One ... is exerting inhibitory activity against several ...
Anti-Rsk2/MAPKAP Kinase 1b, #0 SK2/MAPKAP K1 beta Smartpool&t 3T3 cell lysate Non-specific Control Pool , #D 1X Universal Buffer...
Biology Products: