Estimating the home ranges of sugar gliders (Petaurus breviceps) (Marsupialia: Petauridae), from grid-trapping and radiotelemetry

1992 ◽  
Vol 19 (4) ◽  
pp. 471 ◽  
Author(s):  
DG Quin ◽  
AP Smith ◽  
SW Green ◽  
HB HInes
Keyword(s):  
Home Range ◽  
Home Ranges ◽  
Data Sets ◽  
Strongly Correlated ◽  
Minimum Convex Polygon ◽  
Patterns Of Use ◽  
Highly Correlated ◽  
Petaurus Breviceps ◽  
Polygon Method

In this study, we examined the number of captures and radio-locations of sugar gliders (Petaurus breviceps) necessary to give reasonable estimates of home ranges. Using home ranges determined by radiotelemetry (RTHR) as a standard, we compared nine methods of estimating trap home range (THR) from grid-based mark-recapture data. Correlation analysis was employed to determine which method of estimating THR most closely correlated with RTHRs. A minimum of 12 captures appears to be adequate for reasonable long-term THR estimates derived from the harmonic mean measure (HMM, 50% isopleth). When RTHRs were estimated by either the minimum convex polygon method (MCP) or the HMM (95% isopleth) from loci collected every 30min, a minimum of 36 radio-locations was adequate. Mean RTHR estimates for identical data sets were 53 775m*2 and 35 333m*2 calculated from the MCP and the HMM (95% isopleth) respectively. A number of methods for analysing grid-trapping data produced THR estimates that were significantly correlated with RTHR estimates. Correlations were highest when RTHRs were estimated with the HMM as opposed to the MCP. RTHR estimates derived from the MCP were most strongly correlated with THR estimates derived by the minimum area method, HMM (50% isopleth) and observed range circle (r*2>0.48). When RTHR estimates were derived from the HMM (95% isopleth), the same correlations were higher (r*2>0.88) and THRs estimated by the boundary-strip methods and the adjusted range circle were also highly correlated (r*2>0.65). The significance of the correlations suggests that reasonable short-term THR estimates may be obtained from small capture samples by these above-mentioned methods of calculation. The HMM appeared to exhibit the greatest overall utility, with both radio-tracking and grid-trapping data. The success of the HMM in describing home range appears to be in its ability to depict centres of activity. The technique is most appropriate for animals such as sugar gliders which use concentrated but patchily distributed food resources, and consequently display uneven patterns of use of space.

Home range and den characteristics of the brush-tailed rabbit-rat (Conilurus penicillatus) in the monsoonal tropics of the Northern Territory, Australia

2006 ◽  
Vol 33 (5) ◽  
pp. 397 ◽  
Author(s):  
Ronald S. C. Firth ◽  
John C. Z. Woinarski ◽  
Richard A. Noske
Keyword(s):  
Home Range ◽  
Radio Telemetry ◽  
Fire Regimes ◽  
Home Range Size ◽  
Northern Territory ◽  
Range Size ◽  
Home Ranges ◽  
Minimum Convex Polygon ◽  
Dry Seasons

Radio-telemetry was used to investigate the home range and den characteristics of the brush-tailed rabbit-rat (Conilurus penicillatus) from three sites in the monsoonal tropics of the Northern Territory, Australia. Radio-tracking was conducted in a series of discontinuous 4–17-day sessions, over a 2-year period. The home ranges of 61 C. penicillatus were estimated using the minimum convex polygon (MCP) and fixed kernel (K95% and K50%) methods. There were no significant differences in home-range size among the three sites or between wet and dry seasons, which suggests that vegetation structure, floristics and season play relatively little role in movements of C. penicillatus. The mean home-range size was 0.79 ± 0.09 ha (MCP estimate) to 0.97 ± 0.12 ha (K95% estimate). The home ranges of males were larger than those of females (mean MCP estimates of 1.07 ± 0.15 and 0.45 ± 0.06 ha respectively). C. penicillatus denned primarily in fallen logs and in hollows of eucalypts and bloodwoods (Corymbia spp.). Rough-barked trees appeared to be preferred. The diameter at breast height (DBH) of den trees varied significantly between the three sites, being greatest at site C1 (34.5 ± 2.4 cm) and least at site C2 (26.1 ± 1.0 cm). Den trees had larger DBH than randomly selected trees at each site. The diameter at the mid-point (DMP) of both den and randomly selected logs were not significantly different between sites. Many individuals used more than one den site per tracking session. The small home ranges of C. penicillatus and its reliance on hollows in trees and logs suggest that this species is very vulnerable to local extinction following long-term annual and destructive fire regimes and land clearing, even in comparatively small patches.

scholarly journals Does Plan B work? Home range estimations from stored on board and transmitted data sets produced by GPS-telemetry in the Colombian amazon

2016 ◽  
Vol 64 (4) ◽  
Author(s):  
Jaime Andres Cabrera ◽  
Eduardo Molina ◽  
Tania Gonzalez ◽  
Dolors Armenteras
Keyword(s):  
Home Range ◽  
Density Estimator ◽  
Home Ranges ◽  
Data Sets ◽  
Gps Telemetry ◽  
Minimum Convex Polygon ◽  
Positioning Systems ◽  
Brownian Bridges ◽  
Tapirus Terrestris ◽  
Colombian Amazon

Telemetry based on Global Positioning Systems (GPS) makes possible to gather large quantities of information in a very fine scale and work with species that were impossible to study in the past. When working with GPS telemetry, the option of storing data on board could be more desirable than the sole satellite transmitted data, due to the increase in the amount of locations available for analysis. Nonetheless, the uncertainty in the retrieving of the collar unit makes satellite-transmitted technologies something to take into account. Therefore, differences between store-on-board (SoB) and satellite-transmitted (IT) data sets need to be considered. Differences between SoB and IT data collected from two lowland tapirs (Tapirus terrestris), were explored by means of the calculation of home range areas by three different methods: the Minimum Convex Polygon (MCP), the Fixed Kernel Density Estimator (KDE) and the Brownian Bridges (BB). SoB and IT data sets were similar, with fix ranging from 63% to 85% respectively and 16 m to 17 m horizontal errors. Depending on the total number of locations available for each individual, the home ranges estimated showed differences between 2.7% and 79.3%, for the 50% probability contour and between 9.9% and 61.8% for the 95% probability contour. These differences imply variations in the spatial coincidence of the estimated home ranges. We conclude that the use of IT data is not a good option for the estimation of home range areas if the collar settings have not been designed specifically for this use. Nonetheless, geographical representations of the IT based estimators could be of great help to identify areas of use, besides its assistance to locate the collar for its retrieval at the end of the field season and as a proximate backup when collars disappear.

scholarly journals Short Communication: A report on ranging behavior of Malayan flying lemurs, Galeopterus variegatus, in West Indonesia: Relationships with habitat characteristics

2019 ◽  
Vol 20 (2) ◽  
pp. 430-435
Author(s):  
YAMATO TSUJI ◽  
BAMBANG PRAYITNO ◽  
TAKAFUMI TATEWAKI ◽  
KANTHI ARUM WIDAYATI
Keyword(s):  
Home Range ◽  
Adult Female ◽  
Short Communication ◽  
Home Range Size ◽  
Habitat Characteristics ◽  
Home Ranges ◽  
Ranging Behavior ◽  
Minimum Convex Polygon ◽  
Night Time ◽  
Polygon Method

Tsuji Y, Prayitno B, Tatewaki T, Widayati KA, Suryobroto B. 2019. Short Communication: A report on ranging behavior of Malayan flying lemurs, Galeopterus variegatus, in West Indonesia: Relationships with habitat characteristics. Biodiversitas 20: 430-435. We attached GPS telemeters to wild Malayan flying lemurs, or colugos (Galeopterus variegatus) (n = 3, one adult male, one adult female, one juvenile male) in Pangandaran Nature Reserve, West Java, Indonesia in August 2018, to preliminary evaluate their home range size and characteristics, paying special attention to relationships with forest structure. Home range sizes, generated from location points collected from 4 to 11 days, ranging from 1.2 to 5.4 ha (based on minimum convex polygon method) or from 1.3 to 4.2 ha (95% Kernel), which is much larger than home ranges of colugos inhabiting palm plantations. The home range sizes of adult colugos were larger than that of juvenile. The home ranges of an adult female and a juvenile overlapped. The generalized linear model demonstrated that the locations where the colugos stayed frequently possessed a small number of trees and/or had a single taller tree, and these effects were stronger than other factors. The home range preferences of colugos seem to be related to gliding effectiveness and/or predator avoidance. The mean gliding distances were 33 m, but sometimes reached > 250 m, and there were no significant differences among animals. Night time gliding frequency showed no clear difference between time periods. We confirmed the effectiveness of GPS telemetry for tracking colugo movements.

Nocturnal home ranges and social interactions of the brushtailed rock-wallaby Petrogale penicillata at Hurdle Creek, Queensland.

2003 ◽  
Vol 25 (2) ◽  
pp. 169 ◽  
Author(s):  
RJ Laws ◽  
AW Goldizen
Keyword(s):  
Social Interactions ◽  
Convex Polygon ◽  
Home Ranges ◽  
Range Data ◽  
Minimum Convex Polygon ◽  
Female Adult ◽  
Males And Females ◽  
Social Structuring ◽  
Polygon Method

The nocturnal ranges of six male and 15 female adult brush-tailed rock-wallabies (Petrogale penicillata) were calculated from November 2001 to March 2002 at Hurdle Creek, Queensland. Social interactions were recorded during the same period. Nocturnal range data were collected by walking transects with a spotlight, and identifying individuals from their colour-coded reflective eartags. Males? nocturnal home ranges averaged 2.84 + 0.32 ha, while those of females averaged 2.01 + 0.20 ha, using the 100% minimum convex polygon method. Home ranges at this site were thus smaller than those described for this species at other sites. The nocturnal home ranges of males and females overlapped with those of several other individuals of both sexes. There appeared to be three groups within the population who emerged from their diurnal refuges along separate lengths of cliffs, had nocturnal ranges that overlapped highly with those of their own group and associated more often with members of their own group than with those of others, indicating social structuring within the population. Males and females associated with and had sexual interactions with several different partners, and there was no indication of long-term guarding of females by males at night. However, males may have monitored the oestrus state of females during the day and guarded females at night only during their oestrus periods.

Home range and movement of foxes (Vulpes vulpes) in coastal New South Wales, Australia

2000 ◽  
Vol 27 (6) ◽  
pp. 663 ◽  
Author(s):  
Paul D. Meek ◽  
Glen Saunders
Keyword(s):  
Home Range ◽  
New South ◽  
Activity Patterns ◽  
New South Wales ◽  
Home Ranges ◽  
Coastal Habitat ◽  
Minimum Convex Polygon ◽  
South Wales ◽  
Fox Control ◽  
Polygon Method

Data on the home range and activity of 14 foxes was collected from coastal habitat in Jervis Bay, New South Wales during 1993–95. Radio-collared foxes had a mean home range of 135 ha and core activity areas of 23 ha (determined by the Minimum Convex Polygon method). There were no significant differences in the home ranges of male and female foxes. The home ranges of some foxes shifted throughout the study. Some animals went on long forays beyond their normal range. All animals displayed nocturnal activity patterns except during the breeding season or after long spells of wet weather when some foraging occurred during daylight hours. The information collected in this study is discussed in the context of fox control.

Variation in the home-range size of the squirrel glider (Petaurus norfolcensis)

2010 ◽  
Vol 32 (2) ◽  
pp. 183 ◽  
Author(s):  
Ross L. Goldingay ◽  
David J. Sharpe ◽  
Matt D. J. Dobson
Keyword(s):  
Home Range ◽  
Habitat Quality ◽  
New South ◽  
Home Range Size ◽  
Range Size ◽  
Home Ranges ◽  
Minimum Convex Polygon ◽  
South Wales ◽  
Squirrel Glider ◽  
Range Estimate

The home-range area of animals may vary geographically and in response to habitat quality. We investigated the size of squirrel glider (Petaurus norfolcensis) home ranges near Brisbane, Queensland, and at Tea Gardens on the central coast of New South Wales. Habitat at both sites had been partially cleared and had been subjected to grazing for several decades. Twelve gliders were tracked over an average of 3.5 months in Brisbane. The fixed kernel (FK95%) home-range estimate averaged 4.6 ± 0.7 (s.e.) ha while the minimum convex polygon (MCP100%) averaged 6.7 ± 1.5 ha. Six gliders were tracked over 1 month at Tea Gardens. The FK95% home-range estimate averaged 14.8 ± 2.4 ha while the MCP100% averaged 13.3 ± 3.1 ha. The Tea Gardens values are derived from relatively short periods and are likely to underestimate the areas used. This study demonstrates that home-range size can vary substantially in the squirrel glider. This has implications for understanding how this species responds to variation in habitat quality and highlights the need for site-specific studies to inform aspects of management.

scholarly journals Importance of canopy connectivity for home range and movements of the rainforest arboreal ringtail possum (Hemibelideus lemuroides)

2007 ◽  
Vol 34 (3) ◽  
pp. 177 ◽  
Author(s):  
Robyn F. Wilson ◽  
Helene Marsh ◽  
John Winter
Keyword(s):  
Home Range ◽  
Negative Impact ◽  
Ground Level ◽  
Home Ranges ◽  
Radio Tracking ◽  
Minimum Convex Polygon ◽  
The Road ◽  
North East ◽  
Wide Road ◽  
Ringtail Possum

Roads and powerline corridors destroy canopy connectivity in the rainforest of north-east Australia. We tested the hypotheses that linear barriers affect (a) the alignment of home ranges, (b) use of habitat either side of linear barriers, and (c) the crossing of them by the strictly arboreal lemuroid ringtail possum (Hemibelideus lemuroides), which is known to be vulnerable to habitat fragmentation. Radio-tracking and a translocation experiment were conducted at a narrow 7-m-wide road and an 80-m-wide powerline. Homes ranges of lemuroid ringtails ranged from 0.15 to 1.67 ha (minimum convex polygon) and were aligned with the road but not powerline corridors. When lemuroid ringtails were experimentally translocated, wider canopy clearings over roads reduced their capacity to return to their original home range, and the powerline corridor was a nearly insurmountable barrier. No possums were observed crossing roads or the powerline corridor at ground level or residing in the intervening matrix, indicating that loss of canopy connectivity has a negative impact on their movements.

Movements and Home Ranges of Feral Pigs (Sus Scrofa) in Kosciusko National Park, New South Wales.

1996 ◽  
Vol 23 (6) ◽  
pp. 711 ◽  
Author(s):  
G Saunders ◽  
B Kay
Keyword(s):  
Home Range ◽  
National Park ◽  
New South ◽  
New South Wales ◽  
Home Range Size ◽  
Range Size ◽  
Home Ranges ◽  
Minimum Convex Polygon ◽  
Feral Pigs ◽  
South Wales

The movements of a subalpine population of feral pigs were examined at Kosciusko National Park in southeastern New South Wales. Sufficient data were collected to estimate the home-range area of 20 pigs on the basis of 782 telemetry and trap locations. Mean (+/- s.d.) home-range size (minimum convex polygon method) for males (35.0 t 22.2 km*2) was significantly greater than that for females (1 1.1 +/- 5.2 km*2). Use of capture-recapture distances to estimate home-range size was considered inappropriate. A test for nomadism suggests that, although home ranges of pigs in this environment were larger than those reported for other pigs in Australia, the pigs were essentially sedentary. Management implications for this population are discussed.

scholarly journals Home range areas of koalas in an urban area of north-east New South Wales

2014 ◽  
Vol 36 (1) ◽  
pp. 74 ◽  
Author(s):  
Ross L. Goldingay ◽  
Barbara Dobner
Keyword(s):  
Home Range ◽  
Urban Area ◽  
Urban Areas ◽  
Tree Planting ◽  
Home Ranges ◽  
Minimum Convex Polygon ◽  
Phascolarctos Cinereus ◽  
North East ◽  
South Wales ◽  
Primary Habitat

Conserving wildlife within urban areas requires knowledge of habitat requirements and population processes, and the management of threatening factors. The koala (Phascolarctos cinereus) is one species that is adversely affected by urban development. Sick and injured koalas in the Lismore urban area are regularly taken into care. We radio-tracked koalas released from care in order to estimate home-range areas and to determine their fate. Koalas were tracked for periods of 90–742 days; 7 of 10 survived for a period of at least one year. Home ranges defined by the minimum convex polygon (MCP100%) were large (mean ± s.e. = 37.4 ± 8.2 ha). Analysis using the 95% Fixed Kernel revealed home-range areas of 8.0 ± 1.7 ha. Analysis of the habitat composition of each MCP home range showed that they included 4.3 ± 0.9 ha of primary habitat (dominated by their primary food trees). These home ranges contained 27.6 ± 6.8 ha of non-habitat (cleared or developed land). Koalas crossed roads within their home ranges at least 5–53 times; one crossed the Bruxner Highway near a roundabout at least 32 times over his 2-year tracking period. Future management should include strategic food tree planting that enhances habitat connectivity and minimises the risk of car strike or dog attack.

scholarly journals Long-term spatial stability of coyote (Canis latrans) home ranges in southeastern Colorado

2000 ◽  
Vol 78 (3) ◽  
pp. 458-464 ◽  
Author(s):  
Ann M Kitchen ◽  
Eric M Gese ◽  
Edward R Schauster
Keyword(s):  
Spatial Distribution ◽  
Home Range ◽  
Canis Latrans ◽  
Core Area ◽  
Home Ranges ◽  
Spatial Stability ◽  
Long Term Stability ◽  
Period 2 ◽  
Territorial Boundaries

Long-term stability of territorial boundaries has not been well documented in canids. To evaluate the prevalence of long-term spatial stability of coyote (Canis latrans) home ranges, we compared the overlap of territorial boundaries and the spatial distribution of telemetry locations of packs in southeastern Colorado. From August 1983 to July 1988 (period 1), 16 coyotes from six packs were radio-tracked. From April 1996 to August 1997 (period 2), 12 coyotes from six packs were captured and tracked in the same area. Mean percentage of overlap of pack ranges was 89.8 ± 8.3% (±SD) for period 1 ranges over period 2 ranges and 55.8 ± 14.4% for period 2 ranges over period 1 ranges. Mean percentage of overlap of the 30% core area of the home ranges was 65.2 ± 13.9% for those of period 1 over those of period 2 and 66.3 ± 28.7% for those of period 2 over those of period 1. Despite substantial overlap of home-range and core-use areas, there were significant differences in the distribution of locations between periods in five of six home ranges. This suggests that, although packs are faithful to one site (i.e., boundaries remain similar over a period of years), their use of the site (i.e., distribution of locations within the range) may change temporally.

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