Navigation Links
Between geometry and biology: How and why does the number of species depend on area
Date:11/10/2011

There are few universal rules in ecology, but arguably one is the relationship between the area of a study plot and the number of species counted within that plot, the so called species-area relationship. Larger study plots obviously host on average more species than do smaller plots, and ecologists have long sought a universal description of this relationship.

Recently, it has been suggested that a universal species-area relationship can be calculated using Maximum Entropy methods once we know the average species richness for plots of a single size and the average number of individuals per species. If such a universal curve could be found, it would allow the development of practical tools for estimating species richness of large areas from smaller samples, or to estimate how many species go extinct after some portion of their habitat is destroyed.

In a paper published in the American Naturalist, a team of ecologists from Charles University in Prague, Czech Republic, and the University of Leeds, UK, have called such grand aspirations into question. They demonstrate that although there is indeed a relationship between the mean population size and the rate at which number of species increases with area, it cannot be universal across different groups of organisms.

"Mathematically, the same species-area relationship cannot hold both for a larger set of species and for the sub-groups within it. For example, the species-area relationship for animals overall cannot be the same as those for verterbrates or invertebrates examined separately", says Arnot izling, theoretical biologist from the Charles University. Rather than a deterministic relationship, the researchers found and described geometric limits that constrain how quickly the number of species can increase with area, and under which conditions it takes place.

Within these constraints, there is a room for biological effects such as the spatial aggregation of individuals within each species to affect the relationship. The species-area relationship is thus driven by the interplay of purely geometrical constraints and biological effects concerning patterns of distribution of individual species. Consequently, even though the shape of the species-area relationship shows pronounced regularities, its variation can reflect ecological differences between groups.


'/>"/>
Contact: David Storch
storch@cts.cuni.cz
Pensoft Publishers
Source:Eurekalert  

Related biology news :

1. Researchers note differences between people and animals on calorie restriction
2. New study indicates link between weight gains during pregnancy and dieting history
3. University professor stresses links between US Navy sonar and whale strandings
4. New book rethinks the relationship between sulfur and crops
5. Stabilizing force for good communication between neurons and muscle cells found
6. A link between mitochondria and tumor formation in stem cells
7. Link possible between pet food contamination and baby formula contamination
8. U of MN study shows link between gene variations and cancer survival
9. Mediator in communication between neurons and muscle cells found
10. Gender biases in leadership selection during competitions within and between groups
11. Interaction between gene variants may alter brain function in schizophrenia
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Between geometry and biology: How and why does the number of species depend on area
(Date:6/7/2016)... 7, 2016  Syngrafii Inc. and San Antonio ... that includes integrating Syngrafii,s patented LongPen™ eSignature "Wet" ... collaboration will result in greater convenience for SACU ... while maintaining existing document workflow and compliance requirements. ... Highlights: ...
(Date:6/1/2016)... 1, 2016 Favorable Government Initiatives ... and Criminal Identification to Boost Global Biometrics System Market ... TechSci Research report, " Global Biometrics Market By ... and Opportunities, 2011 - 2021", the global biometrics market ... on account of growing security concerns across various end ...
(Date:5/9/2016)... Elevay is currently known as ... for high net worth professionals seeking travel for work ... world, there is still no substitute for a face-to-face ... your deal with a firm handshake. This is why ... of citizenship via investment programs like those offered by ...
Breaking Biology News(10 mins):
(Date:6/27/2016)... --  Ginkgo Bioworks , a leading organism design ... awarded as one of the World Economic Forum,s ... innovative companies. Ginkgo Bioworks is engineering biology to ... in the nutrition, health and consumer goods sectors. ... including Fortune 500 companies to design microbes for ...
(Date:6/24/2016)... Raleigh, NC (PRWEB) , ... June 24, 2016 , ... ... find the most commonly-identified miRNAs in people with peritoneal or pleural mesothelioma. Their findings ... here to read it now. , Diagnostic biomarkers are signposts in the blood, ...
(Date:6/23/2016)... - FACIT has announced the creation of a ... Propellon Therapeutics Inc. ("Propellon" or "the Company"), to ... of first-in-class WDR5 inhibitors for the treatment of ... an exciting class of therapies, possessing the potential ... patients. Substantial advances have been achieved with the ...
(Date:6/23/2016)... 2016  The Prostate Cancer Foundation (PCF) is pleased to announce ... cures for prostate cancer. Members of the Class of 2016 were selected from ... Read More About the Class of 2016 PCF Young Investigators ... ... ...
Breaking Biology Technology: