Home Range Estimates Vary with Sample Size and Methods

Boyle, Sarah A.; Lourenço, Waldete C.; Silva, Lívia R. da; Smith, Andrew T.

doi:10.1159/000201092

Cited by 185 publications

(118 citation statements)

References 35 publications

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“…We calculated home range and day range via a minimum convex polygon (Odum and Kuenzler 1955). We did not use kernel density estimators (Worton 1987), another method for estimating home range, to calculate day range because they were inconsistent and overestimated the size of the area when sample size was low (Boyle et al 2009). We calculated the percentage of each forest fragment used by bearded saki monkeys via a minimum convex polygon for all bearded saki data points.…”

Section: Spatial Analysis: Home and Day Rangementioning

confidence: 99%

Travel and Spatial Patterns Change When Chiropotes satanas chiropotes Inhabit Forest Fragments

et al. 2009

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Previous studies have used home range size to predict a species' vulnerability to forest fragmentation. Northern bearded saki monkeys (Chiropotes satanas chiropotes) are medium-bodied frugivores with large home ranges, but sometimes they reside in forest fragments that are smaller than the species' characteristic home range size. Here we examine how travel and spatial patterns differ among groups living in forest fragments of 3 size classes (1 ha, 10 ha, and 100 ha) versus continuous forest. We collected data in 6 research cycles from JulyAugust 2003 and January 2005-June 2006 at the Biological Dynamics of Forest Fragments Project (BDFFP), north of Manaus, Brazil. For each cycle, we followed the monkeys at each study site from dawn until dusk for 3 consecutive days, and recorded their location. Although bearded saki monkeys living in 10-ha and 1-ha fragments had smaller day ranges and traveled shorter daily distances, they traveled greater distances than expected based on the size of the forest fragment. Monkeys in the small fragments revisited a greater percentage of feeding trees each day, traveled in more circular patterns, and used the fragments in a more uniform pattern than monkeys in the continuous forest. Our results suggest that monkeys in the small fragments maximize their use of the forest, and that the preservation of large tracts of forest is essential for species conservation. Species with large home ranges sometimes inhabit forest fragments, but doing so can alter behavior, demographics, and ecology, and the monkeys may be vulnerable to stochastic events.

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Section: Spatial Analysis: Home and Day Rangementioning

confidence: 99%

Travel and Spatial Patterns Change When Chiropotes satanas chiropotes Inhabit Forest Fragments

et al. 2009

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“…These findings concur with some studies (e.g., Burgman & Fox 2003, Bӧrger et al 2006, Nilsen et al 2008) that MCP should be avoided because of unpredictable bias, but are in sharp contrast to several recent studies that claim the MCP method is more accurate than kernel estimators (e.g., , Boyle et al 2009) and have large implications: many studies may be irrelevant if inappropriate methods were used to estimate area required for conservation purposes, research purposes, etc. The differences between these studies and the present study are likely based on speciesspecific ecology; the frogs in the present study restrict movement to within relatively small home ranges compared to highly motile animals such as snakes and monkeys.…”

Section: Home Range Sizesupporting

confidence: 87%

Sex-Specific Patterns of Movement and Space Use in the Strawberry Poison Frog, Oophaga pumilio

Murasaki¹

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“…Data Analysis Home Range Estimation We estimated home ranges based on GPS data (larger coastal group: 2,773 points, smaller coastal group: 1,993 points, highland group: 891 points) by using the fixed kernel density method [Worton, 1989]. The difference in the sampling interval between the coastal and highland groups did not affect the estimation because sufficient data points were available for all 3 groups [Boyle et al, 2009]. The raster size was 10 × 10 m, and the smoothing parameter h was determined by an ad hoc technique.…”

Section: Behavioral Data Collectionmentioning

confidence: 99%

Within-Population Variations in Home Range Use and Food Patch Use of Japanese Macaques: A Perspective of Intergroup Hostility

Kurihara¹,

Hanya²

2018

IJFP

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Behavioral mechanisms of intergroup feeding competition remain unclear, despite its importance as a benefit of group living. Japanese macaques in the coastal and highland forests of Yakushima, Japan, are ideal study subjects because the intensity of intergroup feeding competition differs without phylogenetic effects. We aimed to test whether macaques modify home range use and food patch use in response to the location-specific risk of intergroup encounters. Using behavioral data from 3 groups, we examined the border avoidance and the effects of food patch location on food patch use. All 3 groups used the border less frequently than expected from its area. In the coastal forest characterized by frequent intergroup aggression, the smaller subordinate group, not the larger dominant group, increased the number of co-feeding individuals along the border. This response might reduce the potential costs of intergroup aggression. Feeding duration in one patch, visual scanning, and co-feeding with adult males did not depend on food patch location for the 2 groups. In contrast, the highland group did not modify food patch use along the border owing to the low risk of intergroup encounters. Our results highlight the importance of intergroup hostility as a social factor affecting animal behavior.

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Home Range Estimates Vary with Sample Size and Methods

Cited by 185 publications

References 35 publications

Travel and Spatial Patterns Change When Chiropotes satanas chiropotes Inhabit Forest Fragments

Travel and Spatial Patterns Change When Chiropotes satanas chiropotes Inhabit Forest Fragments

Sex-Specific Patterns of Movement and Space Use in the Strawberry Poison Frog, Oophaga pumilio

Within-Population Variations in Home Range Use and Food Patch Use of Japanese Macaques: A Perspective of Intergroup Hostility

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