Home Range and Habitat Selection of Female Mountain Nyalas (Tragelaphus Buxtoni) in the Human-Dominated Landscape of the Ethiopian Highlands

2020 ◽  
Author(s):  
Anagaw Atickem ◽  
Matthias Klapproth ◽  
Martha Fischer ◽  
Dietmar Zinner ◽  
Leif Egil Loe
Keyword(s):  
Habitat Selection ◽  
Home Range ◽  
National Park ◽  
Resource Selection ◽  
Home Range Size ◽  
Range Size ◽  
Home Ranges ◽  
Human Settlement ◽  
Night Time ◽  
Selection Of

Abstract Background: Human settlement and agricultural activities restrict increasingly the range of large mammals in many cases contributing to declining numbers of ungulates. Here, we studied home range size and habitat selection of female mountain nyalas in the northern end of the Bale Mountains National Park (BMNP) (31 km2) surrounded by human settlement. We collected data on space use of seven adult female mountain nyalas equipped with Global Positioning System (GPS) collars. Home range size was estimated using fixed kernel density and habitat selection was determined by resource selection functions.Results: We found that female mountain nyalas have much smaller (5.7 km2) home ranges than the 19 km2 home range size predicted for a 170 kg, group-living species living in mixed habitats. Home ranges were 30% larger in night time than daytime. We suggest that the night time extension beyond the park boundaries were caused by both push and pull effects. The presumably high livestock and other ungulates grazing pressure within the protected area may cause forage-driven excursions out of the park, in particular during agricultural crop seasons. In addition, mountain nyalas are probably attracted by humans as shields against hyena predation. Resource selection index indicates bush land and forest habitat are the most preferred habitat types while agriculture and human settlements are least preferred habitats.Conclusions: Given that mountain nyalas are found in high density (24 individuals/km2) and the size of the northern part of the Bale Mountain National Park, which is currently under protection by the park authorities for the mountain nyala conservation, is too small for the predicted home range size of large ungulates, we suggest protecting additional area may be needed for the long-term conservation of the endangered mountain nyala.

scholarly journals Home range, movement and habitat selection of dholes (Cuon alpinus) in Khao Yai National Park, Thailand

2020 ◽  
Vol 21 (12) ◽  
Author(s):  
Ronglarp - Sukmasuang ◽  
WARONG SUKSAVATE ◽  
NUCHARIN SONGSASEN ◽  
NORASET KHIOWSREE ◽  
KHWANRUTAI CHARASPET ◽  
...  
Keyword(s):  
Habitat Selection ◽  
Home Range ◽  
High Activity ◽  
National Park ◽  
Home Range Size ◽  
Range Size ◽  
Habitat Types ◽  
Cuon Alpinus ◽  
Khao Yai National Park ◽  
Selection Of

Abstract. Sukmasuang R, Suksavate W, Songsasen N, Khiowree N, Charaspet K, Pla-ard M, Chanachai Y, Thomas W, Srinopawan K. 2020. Home range, movement and habitat selection of dholes (Cuon alpinus) in Khao Yai National Park, Thailand. Biodiversitas 21: 5915-5926. This study aimed to examine the home range, movement and habitat selection of dholes (Cuon alpinus) in Khao Yai National Park from January 2017 to September 2019 with the objective of studying their movement, diel activity and habitat selection. Based on Autocorrelated Kernel density home range estimation, the results showed that the average home range size of the adult female dhole was 64.6  km2, while the adult male dhole had an average home range size of 132.9 km2. It was found from the monthly analysis that the home range size varied by animal gender and the period of their denning and parenting time. It was also found that the distance traveled by the female dhole was 10.2 km/day, while the male dhole traveled around 19.3 km/day. The overall analysis discovered that the dholes were most active during dawn and dusk. Further, the level of activity increased from May onwards. The grassland and mixed deciduous habitat types significantly affected the selection of the dholes. Case-control linear logistic regression analysis between the distance of the location and habitat types was extremely and positively significant with grassland, which signified the high activity of dhole in the grassland. However, the result was negative with mixed deciduous forest, which was the habitat of the dhole. Autocorrelation functions demonstrated high activity occurred during the early morning and after sunset, which showed that the dholes could adapt for survival in the area, even with recreational activities in the park. The results of this study could contribute to knowledge concerning the species’ movement for long-term species management and conservation.

AKDEC home range size and habitat selection of Sumatran elephants

2016 ◽  
Vol 43 (7) ◽  
pp. 566 ◽  
Author(s):  
Alexander Markus Moßbrucker ◽  
Christen H. Fleming ◽  
Muhammad Ali Imron ◽  
Satyawan Pudyatmoko ◽  
Sumardi
Keyword(s):  
Habitat Selection ◽  
Home Range ◽  
Home Range Size ◽  
Range Size ◽  
Special Focus ◽  
Home Ranges ◽  
Specific Information ◽  
Forest Protection ◽  
Conventional Methods ◽  
Selection Of

Context Understanding ranging behaviour and habitat selection of threatened species is crucial for the development of conservation strategies and the design of conservation areas. Our understanding of the actual needs of the critically endangered Sumatran elephant in this context is insufficient. Aims Provide reliable subspecies-specific information on home range size and habitat selection of Sumatran elephants. Methods Using both the new area-corrected autocorrelated kernel density estimation (AKDEC) and two commonly applied conventional methods, the home range sizes of nine Sumatran elephants were estimated. Elephant habitat selection was studied using Manly’s selection ratios. Key results AKDEC home ranges of adults ranged from 275 km2 to 1352 km2. Estimates obtained using conventional KDE and minimum convex polygon (MCP) ranged between 156 km2 and 997 km2. Overall habitat selection was significant for both slope and land-cover type, whereas individual preferences varied to some extent. On the basis of global selection ratios, we found natural forest, pulpwood plantations and gentle slopes (≤4°) to be significantly selected, whereas most areas affected by human activities and steeper slopes were avoided by the majority of animals included in the study. Conclusions As expected, AKDEC estimates were much larger than those obtained using conventional methods because conventional methods have a tendency to underestimate home range size when confronted with autocorrelated movement data and produce estimates that refer to the limited study period only, whereas AKDEC estimates include the predicted animal’s long-term space use. The extremely large AKDEC estimate obtained for a subadult male most likely represents a combination of population dispersal range and temporary home range rather than its final adult home range. Regardless, it appears that Sumatran elephants roam over much larger areas than previously assumed. Natural forests and relatively flat areas are of great importance for Sumatran elephants. The observed intensive use of pulpwood plantations by one individual is likely because of limited availability of alternative suitable habitats. Implications A landscape-wide approach to elephant conservation that takes large home ranges into account, is required, and should include forest protection and restoration and elephant friendly management of existing pulpwood concessions, with special focus on areas with relatively gentle slopes.

Breeding-Season Survival, Home-Range Size, and Habitat Selection of Female Bachman's Sparrows

2021 ◽  
Vol 20 (1) ◽  
Author(s):  
Daniel Y. Choi ◽  
Alexander C. Fish ◽  
Christopher E. Moorman ◽  
Christopher S. DePerno ◽  
Jessica M. Schillaci
Keyword(s):  
Habitat Selection ◽  
Home Range ◽  
Breeding Season ◽  
Home Range Size ◽  
Range Size ◽  
Selection Of

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 Great Gray Owl home range and habitat selection during the breeding-season

2019 ◽  
Vol 42 ◽  
pp. 90-96
Author(s):  
Katherine Gura ◽  
Bryan Bedrosian ◽  
Anna D. Chalfoun ◽  
Susan Patla
Keyword(s):  
Habitat Selection ◽  
Home Range ◽  
Breeding Season ◽  
Resource Selection ◽  
Home Range Size ◽  
Breeding Habitat ◽  
Home Ranges ◽  
Effective Management ◽  
Density Estimates ◽  
Resource Requirements

Identifying resource requirements of under-studied species during key stages such as breeding is critical for effective management. We quantified breeding-season home-range attributes and habitat selection of adult Great Gray Owls across multiple spatial (home-range and within-home-range level) and temporal (nesting and post-fledging; day versus night) scales in western Wyoming, USA. In 2018 and 2019 we outfitted adult male owls (n = 18) with GPS remote-download transmitters and collected hourly location data throughout the breeding season (1 May – 15 September). Using 50% and 95% kernel density estimates (KDE), mean core area was 1.2 km2 and mean home-range size was 6.2 km2 (n = 16). Resource selection analyses incorporated both remotely-sensed and microsite data. We conducted microsite surveys at used and available points within 95% KDE home ranges using a stratified random sample design (n = 661). Determining home-range and breeding habitat requirements will improve density estimates and facilitate the effective management of Great Gray Owls and their habitat. We found differing patterns between habitat selection at the home-range and within-home-range scales.   Featured photo by YNP on Flickr. https://flic.kr/p/SA17KT

scholarly journals Home range sizes of Cape Mountain Zebras Equus Zebra Zebra in the Mountain Zebra National Park

Koedoe ◽  
1982 ◽  
Vol 25 (1) ◽  
Author(s):  
B. L Penzhorn
Keyword(s):  
Home Range ◽  
National Park ◽  
Home Range Size ◽  
Range Size ◽  
Home Ranges ◽  
The Mean

The mean home range size of Cape mountain zebra breeding herds was 9,4 km2 (range 3,1 @ 16,0 km2). In two herds which split up, the home ranges of the resultant herds included the original home ranges, but were larger.

scholarly journals Home Range Attributes and Habitat Selection of Barred Owls and Spotted Owls in an Area of Sympatry

The Condor ◽  
2007 ◽  
Vol 109 (4) ◽  
pp. 750-768 ◽  
Author(s):  
Thomas E. Hamer ◽  
Eric D. Forsman ◽  
Elizabeth M. Glenn
Keyword(s):  
Habitat Selection ◽  
Home Range ◽  
Breeding Season ◽  
Home Range Size ◽  
Negative Slope ◽  
Home Ranges ◽  
Strix Varia ◽  
Spotted Owls ◽  
Barred Owls ◽  
Selection Of

Abstract We compared home range areas and habitat selection of radio-marked Spotted Owls (Strix occidentalis) and Barred Owls (Strix varia) in an area of sympatry in the northern Cascade Range of Washington in 1986–1989. On average, home ranges of Spotted Owls were 3–4 times larger than ranges of Barred Owls, and there was little overlap of home ranges during the breeding season. Ranges of both species tended to expand during winter. Home range size of both species was negatively correlated with the amount of old forest, but the negative slope of the regression was much steeper for Spotted Owls than for Barred Owls. For both species, home ranges of individual owls typically had high overlap among seasons and years, indicating high site fidelity. Barred Owls generally occupied home ranges at lower elevations than Spotted Owls (mean  =  386 ± 27 m vs. 750 ± 68 m). Both species tended to use old forests more than expected, but Spotted Owls tended to use other cover types less than expected, whereas Barred Owls used most other cover types in proportion to their availability. We suggest that Spotted Owls may use larger ranges than Barred Owls because they prey selectively on a few species of nocturnal mammals, whereas Barred Owls forage more evenly across a broad range of prey types, including diurnal and aquatic species. The low overlap of Barred Owl and Spotted Owl home ranges suggests that territorial Barred Owls exclude Spotted Owls from their territories, at least during the breeding season, thus reducing the amount of habitat available to Spotted Owls.

Home-range studies in a reintroduced brush-tailed rock-wallaby (Petrogale penicillata) population in the Grampians National Park, Victoria

2011 ◽  
Vol 33 (2) ◽  
pp. 128 ◽  
Author(s):  
Jenny Molyneux ◽  
David A. Taggart ◽  
Anthony Corrigan ◽  
Sean Frey
Keyword(s):  
Home Range ◽  
National Park ◽  
Site Fidelity ◽  
Home Range Size ◽  
Range Size ◽  
Local Extinction ◽  
Home Ranges ◽  
Radio Tracking ◽  
Western Victoria ◽  
Species Ecology

In 2008, after 9 years of presumed local extinction, brush-tailed rock-wallabies (Petrogale penicillata) were reintroduced at Moora Moora Creek in the Grampians National Park, western Victoria. Since little is known about this species in Victoria, the reintroduction presented an important opportunity to gain information on the species’ ecology. Radio-tracking was undertaken and home range determined for three individuals released 11 months before this study and a further five individuals that were released at the commencement of the study in October 2009. Home-range size showed little variation amongst individuals, with a mean overall home range of 26 ha (±1.69, s.e.) and a mean core home range of 2.5 ha (±0.24, s.e.). Newly reintroduced individuals showed higher levels of association with wallabies from the same release and greater site fidelity when known conspecifics were close. Within 5 months of release, newly reintroduced animals showed home ranges similar in both size and distribution to those of animals released 11 months prior.

scholarly journals Movements, Home-Range Size and Habitat Selection of Mallards during Autumn Migration

PLoS ONE ◽  
2014 ◽  
Vol 9 (6) ◽  
pp. e100764 ◽  
Author(s):  
Daniel Bengtsson ◽  
Alexis Avril ◽  
Gunnar Gunnarsson ◽  
Johan Elmberg ◽  
Pär Söderquist ◽  
...  
Keyword(s):  
Habitat Selection ◽  
Home Range ◽  
Home Range Size ◽  
Range Size ◽  
Autumn Migration ◽  
Selection Of
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