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A standard for species

Delimitation of species is especially taxing when populations of similar organisms occupy non-overlapping geographical ranges. A new quantitative framework offers a consistent approach for tackling the problem.

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Figure 1: Diversity delimited.


  1. Wilson, E. O. The Diversity of Life (Belknap, 1992).

    Google Scholar 

  2. Tobias, J. A. et al. Ibis 152, 724–746 (2010).

  3. Isaac, N. J. B., Mallet, J. & Mace, G. M. Trends Ecol. Evol. 19, 464–469 (2004).

    Google Scholar 

  4. Mayr, E. Principles of Systematic Zoology (McGraw-Hill, 1969).

    Google Scholar 

  5. Collar, N. J. Forktail 22, 85–112 (2006).

    Google Scholar 

  6. Ayala, F. J. & Coluzzi, M. Proc. Natl Acad. Sci. USA 102, 6535–6542 (2005).

    CAS  Google Scholar 

  7. Edwards, S. V. Evolution 63, 1–19 (2009).

    CAS  Google Scholar 

  8. Genome 10K Community of Scientists J. Hered. 100, 659–674 (2009).

  9. Miller, W. et al. Genome Res. 19, 213–220 (2009).

    CAS  Google Scholar 

  10. Reeder, D. M., Helgen, K. M. & Wilson, D. R. Occ. Pap. Mus. Texas Tech Univ. No. 269 (2007).

  11. del Hoyo, J., Elliott, A. & Christie, D. A. (eds) Handbook of the Birds of the World Vol. 12 (Lynx, 2007).

    Google Scholar 

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Brooks, T., Helgen, K. A standard for species. Nature 467, 540–541 (2010).

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