HOME >> BIOLOGY >> NEWS
Deserts and rainforests are equally productive during drought

New Haven, Conn. A team of researchers led by Melinda Smith at Yale and Travis Huxman at the University of Arizona report that, from desert to rainforest, during drought conditions, the maximum rain use efficiency (RUEmax), or effective productivity of plant growth per unit of precipitation converges to a common value.

During the late 1960s and early 1970s, the International Biological Program (IBP) began to study how water affects productivity in different ecosystems. It was not until this current group of scientists pooled long-term data in a workshop at the National Center for Ecological Analysis and Synthesis at University of California, Santa Barbara that the scope and similarity of productivity in all ecosystems was seen. Their study, published in the journal Nature, represents datasets from 14 ecosystems.

The RUEmax model predicts that when water is the most limiting resource there will be convergence in the production-precipitation ratio for all biomes. The previous, site model predicts there will be a difference in productivity and that sensitivity of different ecosystems is a function of the different forms of plant growth.

"We looked across nine different biomes - from a forest all the way to a very dry desert - at the sensitivity of production to precipitation," said Smith, associate professor of Ecology and Evolutionary Biology at Yale. "The data showed that if you look at the driest year, when water is most limiting, in any of the 14 sites - and compare growth production in that year - the rate of growth production in all biomes converges to a RUEmax that is very similar to what is seen in deserts."

Therefore, in a forest, during a really dry year there is the same growth production per unit of precipitation as there is in a really dry year in a desert. This data indicates that production sensitivity depends on the extent to which water is the limiting resource.

Although the RUEmax model is based on previou
'"/>

Contact: Janet Rettig Emanuel
janet.emanuel@yale.edu
203-432-2157
Yale University
29-Jun-2004


Page: 1 2 3

Related biology news :

1. Duke Ecologist Says Logging Is Creating Mahogany Deserts
2. A realistic way to save rainforests
3. Weeds in disturbed areas may be source of more medically important compounds than plants in tropical rainforests
4. Biologists work to preserve rainforests endangered plants
5. Endurance exercise found to be equally effective as diuretics in improving cardiac health
6. All ecosystems are equally productive under drought conditions
7. Study shows that aspirin and warfarin are equally effective for stroke prevention
8. The birth of reproductive health: A difficult delivery
9. Stem-cell research and reproductive cloning laws should be separate
10. Germans must research the history of reproductive medicine during the Nazi era
11. $5 million grant funds partnership, studies of minority-based issues in reproductive health

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:3/14/2016)... Florida , March 14, 2016 ... the growing mobile commerce market, announces the airing of a ... channels starting the week of March 21 st .  The ... CNBC, including its popular Squawk on the Street show. ... focused on the growing mobile commerce market, announces the airing ...
(Date:3/11/2016)... http://www.apimages.com ) - --> http://www.apimages.com ... at AP Images ( http://www.apimages.com ) - Germany ... produce the new refugee identity cards. DERMALOG will be unveiling this ... Hanover next week.   --> ... to produce the new refugee identity cards. DERMALOG will be unveiling ...
(Date:3/10/2016)... , March 10, 2016 ... market research report "Identity and Access Management Market by ... Compliance, and Governance), by Organization Size, by Deployment, by ... published by MarketsandMarkets, The market is estimated to grow ... Billion by 2020, at a Compound Annual Growth Rate ...
Breaking Biology News(10 mins):
(Date:4/28/2016)... April 28, 2016 The report ... Brayton Cryocoolers), Service (Technical Support, Product Repairs & Refurbishment, ... Global Forecast to 2022", published by MarketsandMarkets, the global ... by 2022, at a CAGR of 7.29% between 2016 ... Tables and 94 Figures spread through 159 Pages and ...
(Date:4/28/2016)... ... April 28, 2016 , ... Morris Midwest ( http://www.morrismidwest.com ... regional manufacturers at its Maple Grove, Minnesota technical center, May 11-12. The ... Trumpf. Almost 20 leading suppliers of tooling, accessories, software and other related ...
(Date:4/27/2016)... , April 27, 2016 ... (CSE: NSK) (OTCPink: NSKQB) ( Frankfurt ... an ihre Pressemitteilung vom 13. August 2015 die ... ihre Finanzen um zusätzliche 200.000.000 Einheiten auf 400.000.000 ... Dollar zu bringen. Davon wurden 157.900.000 Einheiten mit ...
(Date:4/27/2016)... ... April 27, 2016 , ... ... preclinical PET (Positron Emission Tomography) and MRI (Magnetic Resonance Imaging) in existing third-party ... and testing novel treatments in small animal subjects. Simultaneous PET/MRI imaging offers a ...
Breaking Biology Technology:
Cached News: