Maxent-directed field surveys identify new populations of narrowly endemic habitat specialists

Cody M. Rhoden; William E. Peterman; Christopher A. Taylor

doi:10.7717/peerj.3632

journal article Open Access Jul 31, 2017

Maxent-directed field surveys identify new populations of narrowly endemic habitat specialists

Cody M. Rhoden William E. Peterman Christopher A. Taylor

PeerJ Vol. 5 pp. e3632 · PeerJ

View at Publisher Save 10.7717/peerj.3632

Abstract

Background
Rare or narrowly endemic organisms are difficult to monitor and conserve when their total distribution and habitat preferences are incompletely known. One method employed in determining distributions of these organisms is species distribution modeling (SDM).

Methods
Using two species of narrowly endemic burrowing crayfish species as our study organisms, we sought to ground validate Maxent, a commonly used program to conduct SDMs. We used fine scale (30 m) resolution rasters of pertinent habitat variables collected from historical museum records in 2014. We then ground validated the Maxent model in 2015 by randomly and equally sampling the output from the model.

Results
The Maxent models for both species of crayfish showed positive relationships between predicted relative occurrence rate and crayfish burrow abundance in both a Receiver Operating Characteristic and generalized linear model approach. The ground validation of Maxent led us to new populations and range extensions of both species of crayfish.

Discussion
We conclude that Maxent is a suitable tool for the discovery of new populations of narrowly endemic, rare habitat specialists and our technique may be used for other rare, endemic organisms.

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Details

Published: Jul 31, 2017
Vol/Issue: 5
Pages: e3632
License: View

Authors

C

Cody M. Rhoden

Illinois Natural History Survey, University of Illinois Urbana—Champaign, Champaign, IL, United States of America

W

William E. Peterman

School of Environment and Natural Resources, Ohio State University, Columbus, OH, United States of America

C

Christopher A. Taylor

Illinois Natural History Survey, University of Illinois Urbana—Champaign, Champaign, IL, United States of America

Funding

State Wildlife Grant from the Arkansas Game and Fish Commission

Cite This Article

Cody M. Rhoden, William E. Peterman, Christopher A. Taylor (2017). Maxent-directed field surveys identify new populations of narrowly endemic habitat specialists. PeerJ, 5, e3632. https://doi.org/10.7717/peerj.3632

Maxent-directed field surveys identify new populations of narrowly endemic habitat specialists

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