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Extinction risk under coloured environmental noise

Heino, M; Ripa, Jörgen LU and Kaitala, V (2000) In Ecography 23(2). p.177-184
Abstract
Positively autocorrelated red environmental noise is characterized by a strong dependence of expected sample variance on sample length. This dependence has to be taken into account when assessing extinction risk under red and white uncorrelated environmental noise. To facilitate a comparison between red and white noise, their expected variances can be scaled to be equal, but only at a chosen time scale. We show with a simple one-dimensional population dynamics model that the different but equally reasonable choices of the time scale yield qualitatively different results on the dependence of extinction risk on the colour of environmental noise: extinction risk might increase as well as decrease when the temporal correlation of noise... (More)
Positively autocorrelated red environmental noise is characterized by a strong dependence of expected sample variance on sample length. This dependence has to be taken into account when assessing extinction risk under red and white uncorrelated environmental noise. To facilitate a comparison between red and white noise, their expected variances can be scaled to be equal, but only at a chosen time scale. We show with a simple one-dimensional population dynamics model that the different but equally reasonable choices of the time scale yield qualitatively different results on the dependence of extinction risk on the colour of environmental noise: extinction risk might increase as well as decrease when the temporal correlation of noise increases. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Ecography
volume
23
issue
2
pages
177 - 184
publisher
Wiley-Blackwell
external identifiers
  • scopus:0034025212
ISSN
1600-0587
DOI
10.1034/j.1600-0587.2000.230203.x
language
English
LU publication?
yes
id
22dbd0f6-dd91-4c6a-ae88-8bd791a1c0b6 (old id 147484)
date added to LUP
2007-07-03 11:59:36
date last changed
2017-10-22 03:54:12
@article{22dbd0f6-dd91-4c6a-ae88-8bd791a1c0b6,
  abstract     = {Positively autocorrelated red environmental noise is characterized by a strong dependence of expected sample variance on sample length. This dependence has to be taken into account when assessing extinction risk under red and white uncorrelated environmental noise. To facilitate a comparison between red and white noise, their expected variances can be scaled to be equal, but only at a chosen time scale. We show with a simple one-dimensional population dynamics model that the different but equally reasonable choices of the time scale yield qualitatively different results on the dependence of extinction risk on the colour of environmental noise: extinction risk might increase as well as decrease when the temporal correlation of noise increases.},
  author       = {Heino, M and Ripa, Jörgen and Kaitala, V},
  issn         = {1600-0587},
  language     = {eng},
  number       = {2},
  pages        = {177--184},
  publisher    = {Wiley-Blackwell},
  series       = {Ecography},
  title        = {Extinction risk under coloured environmental noise},
  url          = {http://dx.doi.org/10.1034/j.1600-0587.2000.230203.x},
  volume       = {23},
  year         = {2000},
}