Living in Peace and Wisdom on our Planet

  My Profile  Log In   Register Free Now   
Living in Peace and Wisdom on our Planet Planet Thoughts Advanced       Click to see one of our videos, chosen at random from the database, along with its PlanetThought
 Try a video
Home   About   Books&Media   Resources   Contact  
   News   Quote   Review   Story   Tip   All   Blogs   News   Quotes   Reviews   Stories   Tips
Get Email or Web Quotes
or use our RSS feeds:
New Feed:  Fossil Fuel
 Full  Blog  News
Read & Comment:
A Solar Community In Isr...
'Let's You And Him Fight...
Paul Krugman's Errors An...
Why Climate Change Is An...




Most recent comments:
From Farm To Fork
A Simple List: Things We...
Can the affluent rest at...

Actions:
Bookmark the site
Contribute $
Easy link from your site
Visit Second Life
Visit SU Blog





News item: Biodiversity Is Crucial To Ecosystem Productivity

    Email a Friend     See Related

0 comments   Add a comment   Contributor:  TheTeam (Apr-26-2008)    Play a Video
Optimism: 3 Categories: Economic/Financial, Sustainable Living, Wildlife and Nature

The steppe in Patagonia was studied for productivityIn the first experiment involving a natural environment, scientists at Brown University have shown that richer plant diversity significantly enhances an ecosystem's productivity. The finding underscores the benefits of biodiversity, such as capturing carbon dioxide, a main contributor to global warming.

Osvaldo Sala, director of the Environmental Change Initiative and the Sloan Lindeman Professor of Biology at Brown, and Pedro Flombaum, a postdoctoral research associate in the Department of Ecology and Evolutionary Biology at Brown, said the results confirmed tests charting how biodiversity affects aboveground plant productivity in artificial ecosystems. Aboveground plant productivity (ANPP) is the amount of biomass, or organic material, produced by plant growth.

But the Brown team also learned that the correlation between plant species richness - the number of plant species in a unit of area - and ANPP in a natural ecosystem was greater than had been expected. What that means, the researchers wrote in a paper published online this week in the Proceedings of the National Academy of Sciences, is that the greater the number of plant species, the more productive the ecosystem.

Conversely, species loss has a decidedly negative impact on ecosystems. This is especially true in light of the role ecosystems play in capturing the global warming gas carbon dioxide: The fewer the plant species in a given natural environment, the less carbon dioxide they capture.

"It's a double whammy," Sala explained. "We not only are disturbing our planet by putting more carbon into the atmosphere, but we're reducing the ability of ecosystems to capture and store it."

Sala and Flombaum conducted their experiments in the Patagonian steppe, a semiarid grassland located on the east side of the Andes Mountains in Argentina. They marked 90 plots, each containing three species of native grasses and three species of native shrubs. The team then removed a certain number of species from the plots and measured each revised plot's productivity.

"The water is the same, the nitrogen is the same, the sunlight is the same," Sala said. "What is different is the diversity of the plants."

What the researchers also learned in their experiments, which ran from 2002 to this year, is that plant productivity in a flourishing ecosystem is enhanced because each species assumes a specific niche. Ecologists call this "niche complementarity." The plants use the resources available to the whole system harmoniously, such as extending their roots at different depths in the soil, using different forms of nitrogen, and staggering when they photosynthesize.

"We are deeper into understanding the mechanisms of an ecosystem's productivity," Sala said.

Brown University, the InterAmerican Institute for Global Change Research, Agencia Nacional de Promoción Científica y Tecnológica and Argentina's National Research Council funded the research.  

Adapted from materials provided by Brown University.

See original news item: ScienceDaily, Apr-24-2008  
Related PlanetThoughts.org reading:
  I=PAT (Oct-12-2010)
  Talk Has Not Halted Biodiversity Loss - Now It's... (Sep-11-2010)
  Biodiversity Is Life. Biodiversity Is Our Life. (Jan-22-2010)
  "We know that market prices need to reflect the f..." (Jan-22-2010)
  A Growing Need For Species To Adapt To A Changin... (Dec-29-2009)
  EU Paper Industry Has Cut Carbon Pollution By 42... (Nov-23-2009)
  The Green Revolution: A Devastating Technology o... (Oct-1-2009)
  Coral Reefs Exposed To Imminent Destruction From... (Jul-20-2009)
  The Amazon Cure: Using Charcoal To Enhance Soil,... (Jul-6-2009)
  Permaculture for Humanity (Jun-30-2009)

Click one tag to see readings related specifically to that tag; click "Tags" to see all related readings
  
^ top
Add a comment    
  Follow the comments made here? 
  (Please log in or register free to follow comments)

  
^ top 
About contributor Member: TheTeam (PlanetThoughts Team) TheTeam (PlanetThoughts Team)

Member: TheTeam (PlanetThoughts Team) The volunteers of PlanetThoughts.org are happy to give you their best selection of news, opinion, reviews, stories, quotes, tips, and more. We hope you enjoy the reading... and thinking. Thanks!

Love your Planet... Know your Planet.

Visit Green Wave Email Marketing
Email Marketing for You and Your Planet


We won a Gotham Green Award for 2010, on Earth Day! Thank you Gotham Networking for this award.

See the attractive event brochure.

Recommended Sites

  Member of:
GOtham Green networking
Green Collar Economy
New York Academy of Sciences
Shades of Green Network

  PlanetThoughts
     Members/Affiliates *

Approaching the Limits
    to Growth
EcoEarth.Info
Environmental News Network
EESI.org
GreenBiz.com
GreenHomeBuilding.com
Heroin and Cornflakes
NewScientist
ScienceDaily


* Members of PlanetThoughts      
  communities on SU or MBL,      
  and blog article affiliates      

  Other Favorite Blogs
21st Century Citizen
Center for Bio. Diversity
Easy Ways to Go Green
EcoGeek
Good Bags
Opposing Views


Valid my RSS feeds


We Do Follow

ClickBlog.org



  Volunteer      Terms of Use      Privacy Policy  

Copyright © 2020 PlanetThoughts.org. All Rights Reserved.
Except for blog items by David Alexander: Some Rights Reserved.