Point count duration: five minutes are usually sufficient to model the distribution of bird species and to study the structure of communities for a French landscape. Bonthoux, S. & Balent, G. Journal of Ornithology, 153:491-504, 2012.
doi  bibtex   
@ARTICLE{Bonthoux2012,
  author = {Bonthoux, Sébastien and Balent, Gérard},
  title = {Point count duration: five minutes are usually sufficient to model
	the distribution of bird species and to study the structure of communities
	for a French landscape},
  journal = {Journal of Ornithology},
  year = {2012},
  volume = {153},
  pages = {491-504},
  doi = {10.1007/s10336-011-0766-2},
  file = {:Bonthoux&Balent2012.pdf:PDF},
  issue = {2},
  owner = {tiago},
  timestamp = {2012.05.07}
}

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