Navigation Links
UBC study first to show evolution's impact on ecosystems
Date:4/1/2009

Scientists have come to agree that different environments impact the evolution of new species. Now experiments conducted at the University of British Columbia are showing for the first time that the reverse is also true.

Researchers from the UBC Biodiversity Research Centre created mini-ecosystems in large aquatic tanks using different species of three-spine stickleback fish and saw substantial differences in the ecosystems in as little as 11 weeks.

Their findings are published in today's Advanced Online Publication of the journal Nature.

Stickleback fish originated in the ocean but began populating freshwater lakes and streams following the last ice age. Over the past 10,000 years a relatively short time span in evolutionary terms different species with distinct physical traits have emerged in some fresh water lakes.

The UBC study involved new species found in British Columbia lakes that have evolved distinct physical traits: limnetic sticklebacks (smaller open water dwellers with narrow mouths), benthic sticklebacks (larger bottom dwellers with a wide gape) and a generalist species to represent the probable ancestor of the two species.

"Simply by what they eat and how they live, even young species that have 'recently' diversified can have a major impact on their food web," says study lead author Luke Harmon, who conducted the study while a post-doctoral fellow at UBC. He is now an assistant professor at the University of Idaho. "This study adds to a broader body of literature showing that species diversity matters in important ways."

Further analysis showed the tanks with the two newest species had larger molecules of dissolved organic carbon, or bits of decaying plants and animals. This prevented sunlight from penetrating the water and inhibited plant growth.

"Our study shows that through evolution, sticklebacks can engineer the light environment of their own ecosystems," says co-author Blake Matthews, a UBC post-doctoral fellow who is now a researcher at Eawag, the Swiss Federal Institute of Aquatic Science and Technology. "It also demonstrates how speciation of a predator might alter the evolutionary course of other organisms in the food web."

"As new species arise from a common ancestor and evolve new ways of exploiting the environment, each inadvertently reshapes the dynamics of the ecosystem around it," says co-author UBC Prof. Dolph Schluter. "We are just beginning to understand how."


'/>"/>

Contact: Brian Lin
brian.lin@ubc.ca
604-822-2234
University of British Columbia
Source:Eurekalert

Related biology news :

1. Study: Health undervalued in reproductive rights debate
2. Health choices predict cancer survival, U-M study finds
3. Taste, odor intervention improves cancer therapy, according to Virginia Tech, Wake Forest study
4. UW-Madison study reveals new options for people with PKU
5. Brain building: Study shows brain growth tied to cell division in mouse embryos
6. Skin cancer study uncovers new tumor suppressor gene
7. Study assesses impact of fish stocking on aquatic insects
8. Study unravels why certain fishes went extinct 65 million years ago
9. CellThera and WPI advance in regeneration study
10. Innerscope Research(R) Uses Same-Day Results From Biometric Study to Identify Key Themes, Styles Behind Effective, Engaging Speaker Presentations
11. Lancet study supports new, highly effective treatment for blood disorder
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/3/2016)... , February 4, 2016 --> ... SEK 1,351.5 M (105.0), up 1,187% compared with fourth quarter of 2014. ... to SEK 517.6 M (loss: 30.0). Earnings per share increased ... was SEK 537.4 M (neg: 74.7). , ... Revenues amounted to SEK 2,900.5 M (233.6), up 1,142% compared with 2014. ...
(Date:2/3/2016)... LIVERMORE, Calif. , Feb. 3, 2016 ... Police Department in Missouri ... of license plate reader (LPR) data from Vigilant Solutions. ... a hit-and-run case in which the victim was walking out ... a parking space next to his vehicle, striking his ...
(Date:2/2/2016)... Feb. 2, 2016  BioMEMS devices deployed ... focused on medical screening and diagnostic applications, ... Wearable devices that facilitate and assure continuous ... movement are being bolstered through new opportunities ... signal acquisition coupled with wireless connectivity and ...
Breaking Biology News(10 mins):
(Date:2/11/2016)... 2016 --> ... (OTCQB: PSID), a life sciences company focused on ... subsidiary, which markets the Caregiver® FDA-cleared non-contact thermometer, ... January 2016, including entering into agreements with five ... growth, and establishing several near-term pipeline opportunities. ...
(Date:2/10/2016)... - BioAmber Inc. (NYSE: BIOA ), a leader ... & Co. Ltd., its partner in the ... an additional CDN$25 million in the joint venture for ... to 40%.  Mitsui will also play a stronger role ... Sarnia , providing dedicated resources alongside BioAmber,s ...
(Date:2/10/2016)... York, New York (PRWEB) , ... ... ... Pharmaceuticals Inc. (NASDAQ: REGN) today announced that it has joined the Human ... and immunotherapies for infectious diseases and cancer. , The Human Vaccines ...
(Date:2/10/2016)... , ... February 10, 2016 , ... ... the International Society of Pharmaceutical Engineering (ISPE) Rocky Mountain Chapter 21st Annual Vendor ... expecting to fill more than 100 tables for its annual event, which will ...
Breaking Biology Technology: