Navigation Links
News for conservationists: Scientists challenge ideas about natural habitats and species diversity
Date:12/31/2012

How can a square meter of meadow contain tens of species of plants? And what factors determine the number of species that live in an ecosystem? Science journal has defined this as one of the 25 most important unresolved questions in science, both for its importance in understanding nature and due to the value of natural ecosystems for mankind. The value of goods and services provided by natural ecosystems is estimated to exceed the GDP of our planet.

For over 50 years, conventional ecological theories have predicted that the number of species that can coexist in a given area increases with the heterogeneity of the environmental conditions in the habitat. This premise was examined in a study conducted by research students Omri Allouche and Michael Kalyuzhny, guided by Prof. Ronen Kadmon from the Alexander Silberman Institute of Life Sciences at the Hebrew University of Jerusalem, in collaboration with Prof. Gregorio Moreno-Rueda and Prof. Manuel Pizarro from Universidad de Granada.

The researchers claim that in a heterogeneous environment where there are many different types of habitats there are fewer resources and less suitable area available to each species, making them more vulnerable to local extinction. This leads to the hypothesis that excessive habitat heterogeneity may actually reduce the number of species.

This hypothesis was examined using mathematical models and empirical analyses of natural ecosystems. Its predictions were examined with a meta-analysis of tens of datasets of plant and animal species from various localities worldwide.

Both the theoretical results and the data analyses supported the researchers' hypothesis that habitat heterogeneity may increase the rate of species extinctions and therefore reduce the number of species that inhabit the ecosystem.

These findings are very important for the conservation of biodiversity, since the current practice is to conserve areas of maximal hab
'/>"/>

Contact: Dov Smith
dovs@savion.huji.ac.il
972-258-81641
The Hebrew University of Jerusalem
Source:Eurekalert

Page: 1 2

Related biology news :

1. Scientists sequence genome of pathogen responsible for pneumocystis pneumonia
2. Better approach to treating deadly melanoma identified by scientists
3. RIT scientists decode 3 bacterial strains common to grapevines and sugarcane
4. Chinese scientists discover evidence of giant pandas population history and local adaptation
5. Scientists develop novel method to study parasite numbers in wild seabirds
6. Was the sauropod dinosaurs large size due to plant food? Scientists argue old idea still has legs
7. Another muscular dystrophy mystery solved; MU scientists inch closer to a therapy for patients
8. Gladstone scientists discover novel mechanism by which calorie restriction influences longevity
9. Neuroscientists prove ultrasound can be tweaked to stimulate different sensations
10. New test adds to scientists understanding of Earths history, resources
11. 23andMe scientists receive more than $500,000 in National Institutes of Health funding
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/29/2014)... as ,facultative, form part—together with other cells—of tissues and ... from the others. However, they have a very special ... cells again. This phenomenon is something that happens in ... tissue growth, thus allowing the regeneration of the organ ... the underlying mechanism that allows these cells to retain ...
(Date:10/29/2014)... organisms in the living world compete with members ... in how much they invest into their competitive ... to get access to high-quality resources, while others ... of the lower-quality resources that are left over ... animal and human societies seems to fluctuate considerably ...
(Date:10/29/2014)... cohort of kidney cancer patients in Europe sheds light ... reveals an apparent link between exposure to aristolochic acid ... The research, by an international team led by scientists ... in Montreal, underscores the importance of investigating possible sources ... plants of the Aristolochia genus, also has been suspected ...
Breaking Biology News(10 mins):A mechanism that allows a differentiated cell to reactivate as a stem cell revealed 2Evolution of competitiveness 2Evolution of competitiveness 3Study sheds light on genetic architecture of kidney cancer 2Study sheds light on genetic architecture of kidney cancer 3
... "At the dawn of the 21st century, we are faced with ... world has grown at a rapid pace, turning the demand for ... Gebisa Ejeta (winner of the world food prize 2009) who is ... held in Lancaster, UK, 13 15th September 2010. ...
... Tenn., Sept. 9, 2010 -- Exemplary efforts to "go ... a 2010 Federal Energy & Water Management Award and ... of the lab,s Sustainable Campus Initiative. The ... Management Program recognized ORNL for its outstanding achievements in ...
... SEPTEMBER 9, 2010 The American Society of Agronomy ... Awards Ceremony on Nov. 2 during the scientific society,s ... The annual awards are presented for outstanding contributions to ... , Alan Blaylock, Agrium Advanced Technologies ...
Cached Biology News:ORNL wins 2 awards for sustainability program 2American Society of Agronomy announces award recipients 2American Society of Agronomy announces award recipients 3American Society of Agronomy announces award recipients 4
(Date:10/27/2014)... 2014 Kalorama Information says that PCR is ... the United States and is ... researcher said the FDA,s Emergency Use Authorization (EUA) to authorize ... the detection of the Ebola virus was an indication ... assess the IVD industry and its biennial survey on ...
(Date:10/27/2014)... Orlando, Florida (PRWEB) October 27, 2014 ... aims at reducing and eliminating several types of ... have not been achieved in over 30 years ... of Noah's Light Foundation, proves that one mom's ... was diagnosed just before Halloween trick-or-treating, and it’s ...
(Date:10/27/2014)... 2014 Janssen Biotech, Inc. and the ... today the launch of Get Your ... campaign designed to provide resources for people living ... role of nutrition and appropriate therapy in managing ... associated with this release, please click: http://www.multivu.com/players/English/7261131-janssen-ccfa-get-your-full-course-for-ibd-wellness-with-sunny-anderson/ ...
(Date:10/26/2014)... 2014 The report "Protective Coatings Market ... Global Trends & Forecast to 2019", defines and segments ... of volume consumed and value generated. The protective coatings ... 2014 to 6,701.3 KT by 2019, at a CAGR ... market data tables and 22 figures spread through 219 ...
Breaking Biology Technology:Kalorama: PCR The Go-to Test in Ebola Fight 2Kalorama: PCR The Go-to Test in Ebola Fight 3FDA Approves Breakthrough in Pediatric Brain Cancer - First in 30 Years 2FDA Approves Breakthrough in Pediatric Brain Cancer - First in 30 Years 3Celebrity Cook Sunny Anderson Teams Up With Janssen And Crohn's & Colitis Foundation Of America To Launch Educational Campaign 2Celebrity Cook Sunny Anderson Teams Up With Janssen And Crohn's & Colitis Foundation Of America To Launch Educational Campaign 3Celebrity Cook Sunny Anderson Teams Up With Janssen And Crohn's & Colitis Foundation Of America To Launch Educational Campaign 4Protective Coatings Market Poised to Reach $18,431.8 Million by 2019 - Report by MarketsandMarkets 2Protective Coatings Market Poised to Reach $18,431.8 Million by 2019 - Report by MarketsandMarkets 3Protective Coatings Market Poised to Reach $18,431.8 Million by 2019 - Report by MarketsandMarkets 4
... Zone Sonography Technology Allows Premium Compact Ultrasound Imaging at ... Area,s Leading Healthcare ... a,leading regional healthcare provider and member of Sutter Health, today,announced ... a developer of premium ultrasound technology, in the Center,s,radiology department. ...
... Sept. 19 CellCyte Genetics,Corporation (the "Company") (OTC ... in order to develop, manufacture and market its ... CellCyte Genetics is developing stem cell enabling ... significantly increased,retention of adult stem cells to diseased ...
... of DelSite cGMP Polymer, IRVING, Texas, ... CARN) today announced its wholly-owned,subsidiary, DelSite Biotechnologies, ... agreement with a biotechnology company for,transdermal delivery ... polysaccharide which is produced under cGMP,with high ...
Cached Biology Technology:Memorial Medical First in Stanislaus County to Provide Convertible Ultrasound From ZONARE 2Memorial Medical First in Stanislaus County to Provide Convertible Ultrasound From ZONARE 3CellCyte Genetics Corp. Forms Device Division to Develop and Manufacture Stem Cell Cultivation and Replication Products 2CellCyte Genetics Corp. Forms Device Division to Develop and Manufacture Stem Cell Cultivation and Replication Products 3CellCyte Genetics Corp. Forms Device Division to Develop and Manufacture Stem Cell Cultivation and Replication Products 4Carrington Subsidiary DelSite Biotechnologies Enters into Technology Evaluation Rights License Agreement for Transdermal Delivery of Vaccines 2Carrington Subsidiary DelSite Biotechnologies Enters into Technology Evaluation Rights License Agreement for Transdermal Delivery of Vaccines 3
... Ascent FL is equipped ... luminometric measurement technologies that ... of advanced features of ... Ascent. Fluoroskan Ascent FL ...
... Thermo's orbital shaker stands both ... more ergonomic height, and help ... from welded tubular steel, these ... support the weight and minimize ...
... Polyribonucleotides (RNA polymers) are ... action of the enzyme, ... Midland, and the appropriate, ... With the exception of ...
...
Biology Products: