Habitat use and selection by takin in the Qinling Mountains, China

2016 ◽  
Vol 43 (8) ◽  
pp. 671 ◽  
Author(s):  
Wen-Bo Yan ◽  
Zhi-Gao Zeng ◽  
Hui-Sheng Gong ◽  
Xiang-Bo He ◽  
Xin-Yu Liu ◽  
...  
Keyword(s):  
Habitat Selection ◽  
Home Range ◽  
Habitat Use ◽  
Landscape Scale ◽  
Conservation Strategies ◽  
Large Species ◽  
Qinling Mountains ◽  
Habitat Types ◽  
Forest Habitats ◽  
Selection Of

Context Understanding habitat use and selection by threatened ungulates is a crucial prerequisite to prioritise management areas and for developing effective conservation strategies. Aims The aim of our research was to determine the habitat use and selection of takins (Budorcas taxicolor) in the middle range of the Qinling Mountains, China. Methods The study was conducted from August 2013 to August 2015. Global positioning system (GPS) radio-tracking was used to monitor 10 collared takins to gain their location information. The Manly–Chesson selectivity index and Bonferroni-adjusted 95% confidence intervals were applied to determine which habitats were selected. Key results Habitat use and selection by takins showed obvious individual differences. At the landscape scale, all of the four most common habitat types were preferred by takins. However, all takins avoided artificially planted larch forest, and farmland and village. Available habitats within the home ranges also mostly included the four common habitat types. At the home-range scale, all individuals had significant habitat selectivity during the entire tracking period and each season. The habitat use and selection within the home range varied obviously with season and showed sexual differences to a certain extent. Conclusions The habitat selection by takins is scale-dependent. At the landscape scale, takins are most likely to occur at sites covered by forest. At both landscape and home-range scales, our results indicated that takins need more diverse forest habitats, but none of the four most common forest habitats is essential for survival of this species. Implications The present work has provided more insight into the habitat use and habitat selection of takins in mountainous forest landscapes. Many measures such as maintaining a diversity of forest habitats, avoiding habitat alteration by invasion of exotic plants, and increasing the area of available habitats by relocating the villages from within to outside of the reserve are recommended to conserve this large species.

Home Range and Habitat Selection of Long-Eared Owls (Asio Otus) in Mediterranean Agricultural Landscapes (Crete, Greece)

2018 ◽  
Vol 11 (3) ◽  
pp. 204-218 ◽  
Author(s):  
D. Emin ◽  
A.G. Toxopeus ◽  
Ir.T.A. Groen ◽  
I. Kontogeorgos ◽  
E. Georgopoulou ◽  
...  
Keyword(s):  
Habitat Selection ◽  
Home Range ◽  
Model Performance ◽  
Home Range Size ◽  
Landscape Scale ◽  
Agricultural Landscapes ◽  
Range Size ◽  
Nominal Scale ◽  
Wide Range ◽  
Selection Of

The Long-eared Owl (Asio otus) in Crete (Greece) is a common agricultural species affected by the recent changes in agro-forestry systems. Concrete studies of habitat selection are needed in order to improve our knowledge of its foraging behaviour in managed rural landscapes. In the present study, we analysed the home range size and habitat selection of 11 Long-eared Owls inside olive groves in the plain of central Crete using radio tracking data and remote sensing images. Six nominal scale and 11 landscape scale predictors were used for habitat selection analysis, using a maximum entropy approach. Home range size ranged between 337 and 969 ha while a 52% of home range overlap was observed suggesting that Long-eared Owls do not defend hunting territories. At the nominal scale, distance to potential roosts (trees) was the most important contributor to model performance, followed by vegetation heterogeneity. Furthermore, local heterogeneity of greenness was a better predictor than simply greenness at the presence location. At the landscape scale the amount of habitat openness significantly improved model performance. Incorporating landscape heterogeneity improved habitat selection prediction compared to using only discrete land cover classification. Results of our study pinpoint that although Long-eared Owls exhibit a wide range of habitat tolerance, they prefer mixed habitat conditions avoiding particularly open areas or dense olive plantations. The research has implications in the face of new reforms of European Common Agricultural policy which emphasised the importance of landscape structure in preserving biodiversity in agricultural areas of Europe.

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.

scholarly journals Holling Meets Habitat Selection - Functional Response of Large Herbivores Revisited

2021 ◽  
Author(s):  
Claudia Dupke ◽  
Anne Peters ◽  
Nicolas Morellet ◽  
Marco Heurich
Keyword(s):  
Habitat Selection ◽  
Habitat Use ◽  
Functional Response ◽  
Time Of Day ◽  
Habitat Availability ◽  
Functional Responses ◽  
Habitat Types ◽  
Response Curves ◽  
Large Herbivores ◽  
Selection Of

Abstract Background: Holling (1959) was the first to describe a functional response between a predator’s consumption-rate and the density of its prey. The same concept may be applied to the habitat selection of herbivores, by considering the change in relative habitat use with the change in habitat availability. Functional responses in habitat selection at a home-range scale has been reported for several large herbivores. However, a link to Holling’s original functional response types has never been drawn despite its potential to understand availability dependence in habitat selection more profoundly. Methods: Discrete choice models were implemented as mixed-effects baseline-category logit models to analyze the variation in habitat selection of a large herbivore over seasonal and diurnal scales. Specifically, changes in habitat use with respect to habitat availability were investigated by monitoring 11 habitat types commonly used by roe deer ( Capreolus capreolus ) in the Bavarian Forest National Park, Germany. Functional response curves were then fitted using Holling’s formulas. Results: Strong evidence of non-linear functional responses was obtained for almost all of the examined habitat types. The shape of the functional response curves varied depending on the season, time of day and in some cases between sexes. These responses could be referenced to Holling’s types, with a predominance of type II.Conclusions: Our results indicate that Holling’s types could be applied to describe general patterns in habitat selection behaviour of herbivores. Functional response in habitat selection may occur in situations of trade-off in the selection of habitats offering different resources, due to temporally varying physiological needs of herbivores. Moreover, the two associated parameters defining the curves helps to identify the temporal variations and clarify how strongly the cost-to-benefit ratio is pronounced for a specific habitat. The presented novel approach of using Holling’s equations to describe functional response in habitat selection of herbivores could be used for assigning general habitat attraction values, independent of habitat availability, which might facilitate the identification of suitable habitats.

scholarly journals Investigating Home Range, Movement Pattern, and Habitat Selection of Bar-headed Geese during Breeding Season at Qinghai Lake, China

Animals ◽  
2018 ◽  
Vol 8 (10) ◽  
pp. 182 ◽  
Author(s):  
Ruobing Zheng ◽  
Lacy Smith ◽  
Diann Prosser ◽  
John Takekawa ◽  
Scott Newman ◽  
...  
Keyword(s):  
Habitat Selection ◽  
Home Range ◽  
Breeding Season ◽  
Movement Ecology ◽  
Movement Pattern ◽  
Qinghai Lake ◽  
Important Species ◽  
Central Asian ◽  
Anser Indicus ◽  
Selection Of

The Bar-headed Goose is the only true goose species or Anserinae to migrate solely within the Central Asian Flyway, and thus, it is an ideal species for observing the effects of both land use and climate change throughout the flyway. In this paper, we investigate the home range, movement pattern, and habitat selection of Bar-headed Geese (Anser indicus) during the breeding season at Qinghai Lake, which is one of their largest breeding areas and a major migration staging area in the flyway. We identified several areas used by the geese during the breeding season along the shoreline of Qinghai Lake and found that most geese had more than one core use area and daily movements that provided insight into their breeding activity. We also observed the intensive use of specific wetlands and habitats near Qinghai Lake. These data provide interesting insights into the movement ecology of this important species and also provide critical information for managers seeking to understand and respond to conservation concerns threatening Bar-headed Geese, such as landscape and habitat changes.

scholarly journals A Pilot Study on Home Range and Habitat Use of Chinese Goral (Naemorhedus Griseus): Exploring GPS Tracking Data in Cliff Landscape by Three Estimation Methods

2021 ◽  
Author(s):  
yang teng ◽  
Shupei TANG ◽  
lai heda meng ◽  
Liji Wu ◽  
Zhiqing HAN ◽  
...  
Keyword(s):  
Home Range ◽  
Habitat Use ◽  
Estimation Methods ◽  
Conservation Strategies ◽  
Gps Tracking ◽  
Tracking Data ◽  
Size Estimation ◽  
Range Estimation ◽  
Lower Altitude ◽  
Effective Conservation

Abstract Home range size estimation is a crucial basis for developing effective conservation strategies and provides important insights into animal behavior and ecology. This study aimed at analyzing the home range variations, the influence of altitude in habitat selection, and comparing three methods in home range estimation of Chinese gorals (Naemorhedus griseus) living at a cliff landscape. The results indicated that there were significant differences between the annual home range sizes of individual animals but there was no difference in their seasonal home range sizes based on GPS tracking data of five female Chinese gorals from February 2015 to September 2018. The monthly home ranges decreased dramatically in May, June and July due to birth-giving. Notable seasonal variations were found in the micro-habitats of the Chinese gorals, as reflected by the altitude they inhabit, with higher altitude habitats used in spring and lower altitude habitats used in winter. Additionally, the altitude of monthly habitats was lowest in January, which may indicate an adaptation to low air temperature. We also found differences between estimation methods, namely minimum convex polygon (MCP), kernel density estimation (KDE) and α-local convex hull (α-LoCoH), with seasonal home range sizes derived from α-LoCoH being substantially smaller than those derived from MCP and KDE. In conclusion, our findings filled the gaps in home range study for this endangered species and contributed to effective conservation strategies. Considerations shall have to be given to the variations in home range estimation caused by different methods when dealing with rugged habitats, so as to make sure that any interpretation concerning the habitat use of the targeted species made on basis of such results would be meaningful and valid.

scholarly journals A Pilot Study on Home Range and Habitat Use of Chinese Goral (Naemorhedus Griseus): Exploring GPS Tracking Data in Cliff Landscape by Three Estimation Methods

2021 ◽  
Author(s):  
Yang Teng ◽  
Shupei TANG ◽  
Dalai Menghe ◽  
Liji Wu ◽  
Zhiqing HAN ◽  
...  
Keyword(s):  
Home Range ◽  
Habitat Use ◽  
Estimation Methods ◽  
Conservation Strategies ◽  
Gps Tracking ◽  
Tracking Data ◽  
Size Estimation ◽  
Range Estimation ◽  
Lower Altitude ◽  
Effective Conservation

Abstract Home range size estimation is a crucial basis for developing effective conservation strategies and provides important insights into animal behavior and ecology. This study aimed at analyzing the home range variations, the influence of altitude in habitat selection, and comparing three methods in home range estimation of Chinese gorals (Naemorhedus griseus) living at a cliff landscape. The results indicated that there were significant differences between the annual home range sizes of individual animals but there was no difference in their seasonal home range sizes based on GPS tracking data of five female Chinese gorals from February 2015 to September 2018. The monthly home ranges decreased dramatically in May, June and July due to birth-giving. Notable seasonal variations were found in the micro-habitats of the Chinese gorals, as reflected by the altitude they inhabit, with higher altitude habitats used in spring and lower altitude habitats used in winter. Additionally, the altitude of monthly habitats was lowest in January, which may indicate an adaptation to low air temperature. We also found differences between estimation methods, namely minimum convex polygon (MCP), kernel density estimation (KDE) and α-local convex hull (α-LoCoH), with seasonal home range sizes derived from α-LoCoH being substantially smaller than those derived from MCP and KDE. In conclusion, our findings filled the gaps in home range study for this endangered species and contributed to effective conservation strategies. Considerations shall have to be given to the variations in home range estimation caused by different methods when dealing with rugged habitats, so as to make sure that any interpretation concerning the habitat use of the targeted species made on basis of such results would be meaningful and valid.

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

Anadromous Sturgeons: Habitats, Threats, and Management

2007 ◽  
Keyword(s):  
Habitat Selection ◽  
Home Range ◽  
Atlantic Sturgeon ◽  
Lawrence Estuary ◽  
Early Juvenile ◽  
Salt Wedge ◽  
Sandy Substrate ◽  
Core Areas ◽  
St Lawrence Estuary ◽  
Selection Of

<em>Abstract</em>.—Space use and habitat selection of early juvenile Atlantic sturgeon <em>Acipenser oxyrinchus</em> have been little studied and remain largely unknown throughout the species’ range. In 2000–2002, survey trawling, ultrasonic telemetry, benthos sampling, and hydrodynamic modeling were used to determine the summer movement patterns, home range size, and habitat use and selection of early juvenile Atlantic sturgeon in the St. Lawrence estuary. Sonic-tagged Atlantic sturgeon, assumed to be age 2 based on their size, used a global area estimated at 76 km2 that included two main core areas. Individual summer home range sizes varied from 1 to 8 km2, but core areas were generally smaller than 1 km2. The mean daily distance traveled ranged from 0.4 to 13.5 km/d and was significantly related to sturgeon size. Fish were located mostly in freshwater relatively close to the salt wedge boundary and far from the shore, intertidal zones, and islands. They mostly used the 6–10-m depth range relatively close to a channel, in areas with low bottom current velocities, and over silt–clay substrates. Salinity and distance from the salt wedge were the two most important variables explaining their habitat selection. Age-0 Atlantic sturgeon used similar depth ranges, bottom salinities, and current velocities, but occupied mainly sandy substrate. Management implications of these results are discussed in relation to the impact of dredging and sediment disposal operations in the St. Lawrence estuary.

scholarly journals Foraging Success and Foraging Habitat Use by Cattle Egrets and Little Egrets in the Camargue, France

The Condor ◽  
2001 ◽  
Vol 103 (1) ◽  
pp. 38-44 ◽  
Author(s):  
Katia Lombardini ◽  
Robert E. Bennetts ◽  
Christophe Tourenq
Keyword(s):  
Habitat Use ◽  
Habitat Type ◽  
Foraging Success ◽  
Foraging Habitat ◽  
Mixed Species ◽  
Habitat Types ◽  
Southern France ◽  
Bubulcus Ibis ◽  
Egretta Garzetta ◽  
Selection Of

Abstract We examined habitat use by Little Egrets (Egretta garzetta) and Cattle Egrets (Bubulcus ibis) that nest together in mixed-species colonies in the Camargue of southern France. We explored the relative use of seven habitat types in relation to their availability and tested the hypothesis that selection of habitat types was related to foraging success, with the prediction that increased foraging success in a given habitat corresponded with increased use of that habitat type. Ricefields and other agricultural habitats were used more than expected by Cattle Egrets, an invasive species in southern Europe; whereas Little Egrets, which are native to the Camargue, tended to select natural freshwater marshes and lagoons. Results were consistent with the hypothesis that increasing use of habitats corresponded with higher foraging success for both species. However, when this analysis was restricted to habitats with sufficient numbers of birds to enable estimates of biomass intake, the association was no longer apparent for Little Egrets.

Sign in / Sign up

Export Citation Format

Share Document