Navigation Links
Species distribution models can exaggerate differences in environmental requirements
Date:4/14/2010

Separate species that live in radically different environments don't necessarily also have different ecological niches. This is the finding of a study investigating the accuracy of current statistical tests that use models of geographic distributions to infer changes in environmental requirements.

In a new study published in the journal Systematic Biology, a model simulating the distributions of two imaginary species with identical environmental requirements, or ecological niches, was created. The model was tested to determine whether a variety of ecological niche modeling methods would correctly infer that the environmental requirements of the two species were identical. In cases where environments were similar or only moderately different, many tests correctly inferred that the environmental requirements of two species were identical, but in the case of radically different environments, the results were biased toward suggesting different environmental requirements.

"If you have two separate populations that occupy different environments, what the study shows is that under some conditions, that observation is really useful and strongly suggests, for example, that you could re-introduce one population into the range of another," said the study's author William Godsoe, a postdoctoral fellow at the National Institute for Mathematical and Biological Synthesis (NIMBioS), an NSF-supported math and biology institute at the University of Tennessee, Knoxville.

"But the fact that the two populations live in different environments could be a trivial observation and lead to erroneous conclusions. For example, you might infer that the two populations have different environmental requirements, suggesting that reintroducing one species into the other wouldn't work, when in fact it could," Godsoe said.

The findings have important implications for understanding the relationship between the environmental requirements of a speciesits nicheand its geographic distribution.

"There is a growing interest in using data on the geographic distributions of a species. This study clarifies the conditions under which distribution data can mislead us, and in the future, this might help us make better management decisions about a species," Godsoe explained.


'/>"/>

Contact: Catherine Crawley
ccrawley@nimbios.org
865-974-9350
National Institute for Mathematical and Biological Synthesis (NIMBioS)
Source:Eurekalert  

Related biology news :

1. New continent and species discovered in Atlantic study
2. Emphasis on conifer forests places multiple species at risk
3. One species entire genome discovered inside anothers
4. How the plant immune system can drive the formation of new species
5. Student study bolsters case for adding a rare sunflower to the endangered species list
6. Ecologist finds dire devastation of snake species following floods of 93, 95
7. Smithsonian scientists help lead effort to barcode worlds species
8. Species still have more viable offspring if they can choose their best mate
9. Smithsonian identifies invasive crab species in Panama Canal expansion area
10. Smithsonian identifies invasive crab species in Panama Canal expansion area
11. New dinosaur species found in Montana
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Species distribution models can exaggerate differences in environmental requirements
(Date:4/5/2017)... 2017  The Allen Institute for Cell Science today ... one-of-a-kind portal and dynamic digital window into the human ... first application of deep learning to create predictive models ... and a growing suite of powerful tools. The Allen ... future publicly available resources created and shared by the ...
(Date:4/3/2017)... April 3, 2017  Data captured by ... platform, detected a statistically significant association between ... to treatment and objective response of cancer ... to predict whether cancer patients will respond ... as well as to improve both pre-infusion potency ...
(Date:3/29/2017)... 2017  higi, the health IT company that operates ... America , today announced a Series B investment ... EveryMove. The new investment and acquisition accelerates higi,s strategy ... transform population health activities through the collection and workflow ... higi collects and secures data today on behalf of ...
Breaking Biology News(10 mins):
(Date:5/26/2017)... ... May 25, 2017 , ... Throughout this webinar, participants will ... process development and economic goals were achieved in both industry and academic settings. ... system, along with techniques for scaling production of mesenchymal stem cells (MSCs) and ...
(Date:5/24/2017)... BOUNTIFUL, Utah (PRWEB) , ... May 24, 2017 ... ... announces the selection and implementation of CLEARAS Water Recovery’s Advanced Biological Nutrient Recovery ... a key component of a $24 million plant upgrade to sustainably meet current ...
(Date:5/24/2017)... May 23, 2017 As Ebola resurfaces in the ... deaths and 20 suspected cases now reported, a new analysis ... database, showed a correlation between the 2014 and 2017 outbreaks ... rose sharply in 2012-13, which preceded the 2014 outbreak. An ... Ebola gene Replikin counts in 2014-15, which again precedes the ...
(Date:5/23/2017)... ... May 23, 2017 , ... Genedata, a ... anniversary, marking the occasion with a strong presence at Bio-IT World Conference & ... further extends an invitation to all attendees to view posters on the ...
Breaking Biology Technology: