Temporal and spatial interactions between an obligate predator, the Eurasian lynx (Lynx lynx), and a facultative scavenger, the wolverine (Gulo gulo)

2011 ◽  
Vol 89 (2) ◽  
pp. 79-89 ◽  
Author(s):  
Jenny Mattisson ◽  
Jens Persson ◽  
Henrik Andrén ◽  
Peter Segerström
Keyword(s):  
Home Range ◽  
Rangifer Tarandus ◽  
Interspecific Interactions ◽  
Interference Competition ◽  
Lynx Lynx ◽  
Eurasian Lynx ◽  
Gulo Gulo ◽  
Home Range Overlap ◽  
Range Overlap ◽  
Temporal Interaction

Interspecific interactions between sympatric carnivores can be important for the behaviour and demography of involved species. We studied spatial and temporal interactions between an obligate predator, the Eurasian lynx ( Lynx lynx (L., 1758)), and a facultative scavenger, the wolverine ( Gulo gulo (L., 1758)). Wolverines are known to utilize lynx-killed reindeer ( Rangifer tarandus tarandus (L., 1758)) and may benefit from being sympatric with lynx if interference competition is low. We used individual location data from 9 lynx and 17 wolverines to analyse interaction between inter- and intra-specific dyads (n = 195). We found no spatial segregation between lynx and wolverines and we observed no attraction or avoidance between individuals of the two species, independent of proportion of home-range overlap. This opposed our prediction that wolverines will show direct or delayed attraction to lynx. Wolverines may still benefit by scavenging lynx-killed reindeer while avoiding direct encounters with the lynx. Within species, we found attraction between males and females, increasing with proportion of overlap for lynx. Attraction was also found between consexual lynx, while consexual wolverines showed little home-range overlap (7%–9%) and neutral temporal interaction, indicating territoriality. Individual space use may be more influenced by conspecific interactions than by other species.

Spatial home-range overlap and temporal interaction in eastern coyotes: the influence of pair types and fragmentation

2003 ◽  
Vol 81 (9) ◽  
pp. 1589-1597 ◽  
Author(s):  
Todd C Atwood ◽  
Harmon P Weeks, Jr.
Keyword(s):  
Home Range ◽  
Nearest Neighbor ◽  
Pair Type ◽  
Environmental Pressures ◽  
Home Range Overlap ◽  
Range Overlap ◽  
Temporal Interaction ◽  
Utilization Distributions ◽  
Nearest Neighbor Distances ◽  
Critical Resources

No data exist regarding the linkage between the dispersion of critical resources and the spatial distribution of eastern coyotes (Canis latrans). From February 2000 to January 2002, we investigated landscape-level correlates of fragmentation with coyote spacing patterns and interaction in west-central Indiana to determine whether habitat fragmentation may influence spatiotemporal home-range overlap. Eleven pairs of coyotes (four male–female, four male–male, three female–female) displayed spatial overlap in portions of their home-range utilization distributions; seven pairs interacted temporally. Percent home-range overlap of space-sharing pairs averaged 55%. Area of forested habitat within the overlap zone, pair type, and mean squared difference of nearest-neighbor distances between forested patches explained substantial amounts of variation in percent home-range overlap (R2 = 0.83, P < 0.001). Extent of temporal interaction differed by pair type, as male–male pairs interacted substantially more than male–female and female–female pairs. Five (two male–male, three male–female) of seven temporally interacting pairs exhibited simultaneous attraction to the overlap zone. The complex combination of environmental pressures present in human-dominated landscapes may facilitate spatiotemporal home-range overlap in coyotes.

scholarly journals Sex-Segregated Range Use by Black-and-White Ruffed Lemurs (Varecia variegata) in Ranomafana National Park, Madagascar

2020 ◽  
pp. 1-33
Author(s):  
Andrea L. Baden ◽  
Jelisa Oliveras ◽  
Brian D. Gerber
Keyword(s):  
Home Range ◽  
National Park ◽  
Social Groups ◽  
Day Length ◽  
Ranomafana National Park ◽  
Home Range Overlap ◽  
Range Use ◽  
Black And White ◽  
Varecia Variegata ◽  
Range Overlap

Ranging behavior is one important strategy by which nonhuman primates obtain access to resources critical to their biological maintenance and reproductive success. As most primates live in permanent social groups, their members must balance the benefits of group living with the costs of intragroup competition for resources. However, some taxa live in more spatiotemporally flexible social groups, whose members modify patterns of association and range use as a method to mitigate these costs. Here, we describe the range use of one such taxon, the black-and-white ruffed lemur (<i>Varecia variegata</i>), at an undisturbed primary rain forest site in Ranomafana National Park, Madagascar, and characterize sex differences in annual home range area, overlap, and daily distances traveled. Moreover, we characterize seasonal variability in range use and ask whether ranging behaviors can be explained by either climatic or reproductive seasonality. We found that females used significantly larger home ranges than males, though sexes shared equal and moderate levels of home range overlap. Overall, range use did not vary across seasons, although within sexes, male range use varied significantly with climate. Moreover, daily path length was best predicted by day length, female reproductive state, and sex, but was unrelated to climate variables. While the patterns of range use and spatial association presented here share some similarities with “bisexually bonded” community models described for chimpanzees, we argue that ruffed lemurs best conform to a “nuclear neighborhood” community model wherein nuclear (core) groups share the highest levels of home range overlap, and where these groups cluster spatially into adjacent “neighborhoods” within the larger, communally defended territory.

scholarly journals Spatiotemporal use predicts social partitioning of bottlenose dolphins with strong home range overlap

2018 ◽  
Vol 8 (24) ◽  
pp. 12597-12614 ◽  
Author(s):  
Rodrigo C. Genoves ◽  
Pedro F. Fruet ◽  
Juliana C. Di Tullio ◽  
Luciana M. Möller ◽  
Eduardo R. Secchi
Keyword(s):  
Home Range ◽  
Bottlenose Dolphins ◽  
Home Range Overlap ◽  
Range Overlap

Spatial Distribution, Site Fidelity, and Home Range Overlap in the North Cascades Elk Herd: Implications for Management

2018 ◽  
Vol 92 (4) ◽  
pp. 251
Author(s):  
Jennifer Sevigny ◽  
Michael Sevigny ◽  
Emily George-Wirtz ◽  
Amanda Summers
Keyword(s):  
Spatial Distribution ◽  
Home Range ◽  
Site Fidelity ◽  
North Cascades ◽  
Home Range Overlap ◽  
The North ◽  
Range Overlap

scholarly journals Common Biases in Density Estimation Based on Home Range Overlap with Reference to Pumas in Patagonia

2014 ◽  
Vol 20 (1) ◽  
pp. 19-26 ◽  
Author(s):  
Kurt A. Rinehart ◽  
L. Mark Elbroch ◽  
Heiko U. Wittmer
Keyword(s):  
Home Range ◽  
Density Estimation ◽  
Home Range Overlap ◽  
Range Overlap

Genetic relatedness and home-range overlap among female black bears (Ursus americanus) in northern Ontario, Canada

1998 ◽  
Vol 76 (8) ◽  
pp. 1511-1519 ◽  
Author(s):  
Anita Schenk ◽  
Martyn E Obbard ◽  
Kit M Kovacs
Keyword(s):  
Home Range ◽  
Genetic Relatedness ◽  
Ursus Americanus ◽  
Kernel Estimator ◽  
Black Bear ◽  
Spatial Proximity ◽  
Dna Fingerprints ◽  
Northern Ontario ◽  
Home Range Overlap ◽  
Range Overlap

The degree of philopatry exhibited by females in an unhunted black bear (Ursus americanus) population occupying the Chapleau Crown Game Preserve in northern Ontario was examined. A truncated kernel estimator was used to identify home-range use. Pairs of adult females were categorized as having home ranges that had moderate overlap or low overlap or were adjacent and non-overlapping or non-adjacent and non-overlapping. Females had low overlap with 6.4 other females, on average, and moderate overlap with 1.5 females. The degree of philopatry was assessed using two methods, each of which was used in an attempt to examine home-range overlap and average genetic relatedness. Relatedness among bears was determined from DNA fingerprints, using an alkaline phosphatase labelled multilocus probe and chemiluminescence detection. The first method involved choosing the 3 oldest females in the region to represent potential matriarchs, and all neighbouring females were identified (n = 8, 8, and 11). DNA fingerprints from each matriarch were compared with those of her neighbours. Average band-sharing coefficients and relatedness estimates within the groups did not reveal patterns of close kinship. The second method involved band-sharing comparisons among pairs of females from each of the 4 home-range categories (n = 12, 57, 80, and 21). Again, no relationship between spatial proximity and average genetic relatedness (range 0.032-0.120) was suggested. The extensive home-range overlap exhibited by this population is not a consequence of natal philopatric tendencies.

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