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Local Range Estimation In Wild Animals

Date:
February 20, 2007
Source:
Public Library of Science
Summary:
A new class of computational methods have been developed to construct distributions of where such monitored organisms are most likely to be found in space and time using this data, and are much more accurate than previous methods when dealing with large sets of data.

Over the past decade global positioning systems and communications technologies have come together in the design of devices attached to animals that allow us to monitor at regular intervals of time (as fine as a fraction of a minute apart) the location of an animal to within the precision of a few meters.

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A new class of computational methods have been developed to construct distributions of where such monitored organisms are most likely to be found in space and time using this data, and are much more accurate than previous methods when dealing with large sets of data. Previous methods, called Kernel Methods, were based on associating a parametric distribution, such as a Normal distribution, with each location point.

The new methods, referred to as LoCoH (local convex hull) methods, are essentially non-parametric kernel methods where the kernel associated with each data point is constructed directly from that point and a given number of its nearest neighbors. These methods have application to all types of ecological and biological resource management problems, but will prove especially useful in evaluating the spatial needs of threatened species and designing parks to conserve them.

This study will be published on February 14, 2007 in PLoS ONE, the international, peer-reviewed, open-access, online publication from the Public Library of Science (PLoS).

Citation: Getz WM, Fortmann-Roe S, Cross PC, Lyons AJ, Ryan SJ et al (2007) LoCoH: Nonparameteric Kernel Methods for Constructing Home Ranges and Utilization Distributions. PLoS ONE 2(2): e207. doi:10.1371/journal.pone.0000207 (http://dx.doi.org/10.1371/journal.pone.0000207)


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The above story is based on materials provided by Public Library of Science. Note: Materials may be edited for content and length.


Cite This Page:

Public Library of Science. "Local Range Estimation In Wild Animals." ScienceDaily. ScienceDaily, 20 February 2007. <www.sciencedaily.com/releases/2007/02/070214084039.htm>.
Public Library of Science. (2007, February 20). Local Range Estimation In Wild Animals. ScienceDaily. Retrieved December 21, 2014 from www.sciencedaily.com/releases/2007/02/070214084039.htm
Public Library of Science. "Local Range Estimation In Wild Animals." ScienceDaily. www.sciencedaily.com/releases/2007/02/070214084039.htm (accessed December 21, 2014).

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