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)... -- The Allen Institute for Cell Science today announces the ... and dynamic digital window into the human cell. The ... of deep learning to create predictive models of cell ... growing suite of powerful tools. The Allen Cell Explorer ... available resources created and shared by the Allen Institute ...
(Date:4/3/2017)... , April 3, 2017  Data captured ... engineering platform, detected a statistically significant association ... prior to treatment and objective response of ... potential to predict whether cancer patients will ... treatment, as well as to improve both pre-infusion ...
(Date:3/29/2017)...  higi, the health IT company that operates the ... , today announced a Series B investment from ... The new investment and acquisition accelerates higi,s strategy to ... population health activities through the collection and workflow integration ... collects and secures data today on behalf of over ...
Breaking Biology News(10 mins):
(Date:7/20/2017)... BC, Canada (PRWEB) , ... July 20, 2017 , ... ... today announced the winning recipients of the 2017 IAC Awards at the 22nd World ... awards, the committee also named four faculty to receive the Distinguished Fellowship Awards. , ...
(Date:7/20/2017)... ... July 20, 2017 , ... ... on digital pathology and artificial intelligence Tuesday, July 25, during the Association of ... from Johns Hopkins Medicine. , Baras, Associate Director of Pathology Informatics, will ...
(Date:7/20/2017)... ... July 20, 2017 , ... Crucial Data Solutions (CDS) ... study participants truly unified. TrialKit, a native mobile app, empowers investigators and clinicians ... studies entirely on mobile devices. With TrialKit, clinical researchers can utilize Core Motion ...
(Date:7/18/2017)... Switzerland (PRWEB) , ... July 18, 2017 , ... ... R&D, today announced that Merck, a leading science and technology company, has implemented ... innovative therapeutics for the therapeutic areas of Oncology, Immunology, and Neurodegenerative Diseases. , ...
Breaking Biology Technology: