Spatial and temporal responses of forest birds to human approaches in a protected area and implications for two management strategies

Fernández‐Juricic, Esteban; Vaca, Raúl Abel; Schroeder, Natalia

doi:10.1016/j.biocon.2003.02.001

Cited by 66 publications

(49 citation statements)

References 38 publications

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“…Sentinels positioned higher in a tree may be able to see further and /or have a wider field of view, and thus be more likely to spot predators sooner (Blumstein et al 2004b;Fernández-Juricic et al 2004a). The detection of terrestrial predators in particular could be enhanced by a higher position; height may be less likely to make a difference when scanning for aerial predators (Blumstein et al 2004b).…”

Section: Discussion (A) Response To Changes In Sentinel Heightmentioning

confidence: 99%

“…External factors, such as the position adopted by the sentinel, may also play an important role. For example, higher perched individuals may spot predators at a greater distance (see Blumstein et al 2004b;Fernández-Juricic et al 2004a) and hence might be perceived as more reliable. Sentinels occupy different positions during different bouts, and they may move between trees or change their position in the same tree within a particular bout (Gaston 1977;Wright et al 2001).…”

Section: Introductionmentioning

confidence: 99%

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The higher the better: sentinel height influences foraging success in a social bird

Radford

Hollén

Bell³

2009

Proc. R. Soc. B.

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In all social species, information relevant to survival and reproduction can be obtained in two main ways: through personal interaction with the environment (i.e. 'personal' information) and from the performance of others (i.e. 'public' information). While public information is less costly to obtain than personal information, it may be inappropriate or inaccurate. When deciding how much to rely on public information, individuals should therefore assess its potential quality, but this possibility requires empirical testing in animals. Here, we use the sentinel system of cooperatively breeding pied babblers (Turdoides bicolor) to investigate how behavioural decisions of foragers are influenced by potential variation in the quality of anti-predator information from a vigilant groupmate. When sentinels moved to a higher position, from where their probability of detecting predators is likely to be greater, foragers reduced their vigilance, spread out more widely and were more likely to venture into the open. Consequently, they spent more time foraging and increased their foraging efficiency, resulting in a profound increase in biomass intake rate. The opposite behavioural changes, and consequent foraging outcomes, were found when sentinels moved lower. A playback experiment demonstrated that foragers can use vocal cues alone to assess sentinel height. This is the first study to link explicitly a measure of the potential quality of public information with a fitness measure from those relying on the information, and our results emphasize that a full understanding of the evolution of communication in complex societies requires consideration of the reliability of information.

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Section: Discussion (A) Response To Changes In Sentinel Heightmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The higher the better: sentinel height influences foraging success in a social bird

Radford

Hollén

Bell³

2009

Proc. R. Soc. B.

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“…These studies may help the development of strategies to integrate human presence with the conservation of biodiversity, both in cities and in protected areas, supporting master and management plans, respectively. This subject has been well-discussed in temperate regions, mainly in Europe (e.g., CLUCAS & MARZLUFF 2012, MØLLER & IBÁNEZ-ÁLAMO 2012, MØLLER & LIANG 2012, DÍAZ et al 2013), but it is poorly known for the Neotropics (but see FERNÁNDEZ-JURICIC et al 2004, CARRETE & TELLA 2010. In Brazil, to our knowledge, there are no previous studies focusing on this issue.…”

mentioning

confidence: 97%

Factors affecting escape distance in birds

Piratelli¹,

Favoretto²,

Maximiano³

2015

Zoologia (Curitiba)

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“…Murmeltiere flüchten bei der Anwesenheit von Wanderern abseits der Wanderwege in ihren Bau (MAININI et al 1993), Gämsen verlassen beim Auftauchen eines Gleitschirms ihre Weidegebiete (ENGGIST-DÜBLIN & INGOLD 2003). Waldvögel werden durch herannahende Besucher aufgescheucht, selbst wenn sie sich auf den Bäumen befinden und somit nicht direkt «bedroht» sind (FERNANDEZ-JURICIC et al 2004). Solche Fluchtreaktionen auf Störungen führen zu einer verringerten Nahrungsaufnahme und einer Beeinträchtigung des Raum-Zeit-Verhaltens (INGOLD 2005).…”

Section: Konflikte Und Schädenunclassified

Die Bedeutung der Erholungsnutzung des Waldes am Beispiel von Picknicken und Grillieren: Ergebnisse einer gesamtschweizerischen Umfrage bei Forstfachleuten und Waldeigentümern | The relevance of forest recreation exemplified by picnicking and grilling: Results of a nationwide survey aimed at forestry experts and public forest owners in Switzerland

Hegetschweiler

Skorupinski²,

Rusterholz

et al. 2007

Schweizerische Zeitschrift Fur Forstwesen

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This study presents the results of a survey aimed at forestry officials, foresters and public forest owners carried out in April/May 2005 in Switzerland. The study points out common problems and interests as well as differences in recreation in forests of various regions and shows differences between urban and rural forests. The relevance of recreation is compared to other forest functions. Special attention is given to the activity picnicking and grilling and building fires at non-official picnic sites.

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Spatial and temporal responses of forest birds to human approaches in a protected area and implications for two management strategies

Cited by 66 publications

References 38 publications

The higher the better: sentinel height influences foraging success in a social bird

The higher the better: sentinel height influences foraging success in a social bird

Factors affecting escape distance in birds

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