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Finding the needle in the haystack: iterative sampling and modeling for rare taxa

  • Nicholas E. YoungEmail author
  • Matthew Fairchild
  • Thomas Belcher
  • Paul Evangelista
  • Chris J. Verdone
  • Thomas J. Stohlgren
ORIGINAL PAPER
  • 46 Downloads

Abstract

Much like finding a needle in a haystack, the effort required to detect a rare and endangered species increases inversely with limited taxa distribution. The infrequency of detections combined with limited fiscal resources often leaves scientists with knowledge gaps about the ecological niche and habitat requirements necessary for conserving rare species. The Arsapnia arapahoe snowfly (A. arapahoe), was thought to be a rare and cryptic aquatic invertebrate for which only 13 individuals from two locations were known to exist in Colorado. In response to potential listing by the US Fish and Wildlife Service as a threatened species, we sought to implement an improved sampling protocol and tested an iterative predictive modeling approach. Species distribution models successively employed annual presence data collected from 2015 to 2017 and detections improved. Although now understood to be a hybrid taxa, the model predicted the locations of seven additional localities while concurrently narrowing the search area and expanding the known geographic range of A. arapahoe. Given our results, we recommend an iterative species distribution modeling and sampling strategy to refine search areas and improve detection rates for rare and endangered species.

Keywords

Cryptic Detection Maxent Software for assisted habitat modeling Species distribution model Survey 

Notes

Acknowledgements

We thank Danielle Fuller, Brian Heinold, and Yann Lapotre for collecting specimens examined in this study. Three peer-reviewers provided helpful comments and suggestions. Natural Resources Ecology Laboratory, Colorado State University, Department of Bioagricultural Sciences and Pest Management, Colorado State University, and USDA Forest Service provided support and funding for this study.

Funding

This study was funded by the Natural Resources Ecology Laboratory, Colorado State University, Department of Bioagricultural Sciences and Pest Management, Colorado State University, and USDA Forest Service.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Supplementary material

10841_2019_151_MOESM1_ESM.docx (14 kb)
Supplementary material 1 (DOCX 14 kb)

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Natural Resource Ecology LaboratoryColorado State UniversityFort CollinsUSA
  2. 2.U.S. Forest ServiceArapaho & Roosevelt National Forests and Pawnee National GrasslandFort CollinsUSA
  3. 3.Graduate Degree Program in EcologyColorado State UniversityFort CollinsUSA
  4. 4.Department of Bioagricultural Sciences and Pest ManagementColorado State UniversityFort CollinsUSA

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