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Disturbance from roads negatively affects Andean condor habitat use

Speziale, Karina L.; Lambertucci, Sergio A. and Olsson, Ola LU (2008) In Biological Conservation 141(7). p.1765-1772
Abstract
Human disturbance can be a severe problem for some animal species. Behavioural ecology theory predicts that sensitivity to mortality risks, and thereby to disturbance, will be related to life-history characteristics. Long-lived species with low reproductive rates are expected to have a high cost of predation and therefore avoid risks strongly. In this paper we quantify the effect of roads on the Andean condor (Vultur gryphus) using behavioural indicators. We used a pair wise design, offering condors standardized food patches near and far from roads simultaneously The patches consisted of dead adult shee We recorded. p. condors' behaviour when visiting each patch. This study establishes the versatility of behavioural indicators and their... (More)
Human disturbance can be a severe problem for some animal species. Behavioural ecology theory predicts that sensitivity to mortality risks, and thereby to disturbance, will be related to life-history characteristics. Long-lived species with low reproductive rates are expected to have a high cost of predation and therefore avoid risks strongly. In this paper we quantify the effect of roads on the Andean condor (Vultur gryphus) using behavioural indicators. We used a pair wise design, offering condors standardized food patches near and far from roads simultaneously The patches consisted of dead adult shee We recorded. p. condors' behaviour when visiting each patch. This study establishes the versatility of behavioural indicators and their usefulness to study conservation problems. We found that, although near and far patches were discovered after similar times and there were similar numbers of condors in the vicinity of near and far patches, the use of patches differed strongly. In the patches far from roads many more condors came to feed, the average time spent per individual was longer, the proportion of time spent vigilant was lower, and the amount of food left uneaten on the carcasses was lower. These results strongly suggest that Andean condors clearly avoid roads, and behave in a way predicted from theory if they trade off safety for energy. This study shows that roads have stronger influence on the habitat use of Andean condors, than previously thought, and may be a significant problem for the species in populated areas. (C) 2008 Elsevier Ltd. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
vigilance, Vultur gryphus, roads, human disturbance, foraging behaviour, giving-up densities
in
Biological Conservation
volume
141
issue
7
pages
1765 - 1772
publisher
Elsevier
external identifiers
  • wos:000258306300004
  • scopus:46749133474
ISSN
1873-2917
DOI
10.1016/j.biocon.2008.04.017
language
English
LU publication?
yes
id
37a2dcea-bee9-487f-9d1c-ce2712dba532 (old id 1252940)
date added to LUP
2008-10-31 09:15:02
date last changed
2017-10-08 03:38:31
@article{37a2dcea-bee9-487f-9d1c-ce2712dba532,
  abstract     = {Human disturbance can be a severe problem for some animal species. Behavioural ecology theory predicts that sensitivity to mortality risks, and thereby to disturbance, will be related to life-history characteristics. Long-lived species with low reproductive rates are expected to have a high cost of predation and therefore avoid risks strongly. In this paper we quantify the effect of roads on the Andean condor (Vultur gryphus) using behavioural indicators. We used a pair wise design, offering condors standardized food patches near and far from roads simultaneously The patches consisted of dead adult shee We recorded. p. condors' behaviour when visiting each patch. This study establishes the versatility of behavioural indicators and their usefulness to study conservation problems. We found that, although near and far patches were discovered after similar times and there were similar numbers of condors in the vicinity of near and far patches, the use of patches differed strongly. In the patches far from roads many more condors came to feed, the average time spent per individual was longer, the proportion of time spent vigilant was lower, and the amount of food left uneaten on the carcasses was lower. These results strongly suggest that Andean condors clearly avoid roads, and behave in a way predicted from theory if they trade off safety for energy. This study shows that roads have stronger influence on the habitat use of Andean condors, than previously thought, and may be a significant problem for the species in populated areas. (C) 2008 Elsevier Ltd. All rights reserved.},
  author       = {Speziale, Karina L. and Lambertucci, Sergio A. and Olsson, Ola},
  issn         = {1873-2917},
  keyword      = {vigilance,Vultur gryphus,roads,human disturbance,foraging behaviour,giving-up densities},
  language     = {eng},
  number       = {7},
  pages        = {1765--1772},
  publisher    = {Elsevier},
  series       = {Biological Conservation},
  title        = {Disturbance from roads negatively affects Andean condor habitat use},
  url          = {http://dx.doi.org/10.1016/j.biocon.2008.04.017},
  volume       = {141},
  year         = {2008},
}