The dominant influencing factors of desertification and ecological risk changes in Qinghai Area of Qilian Mountains National Park: Climate change or human activity?

Journal of Environmental Management, Journal Year: 2024, Volume and Issue: 362, P. 121335 - 121335

Published: June 1, 2024

Language: Английский

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EVALUATION OF DEXMEDETOMIDINE WITH TILETAMINE-ZOLAZEPAM FOR SNOW LEOPARD (PANTHERA UNCIA) IMMOBILIZATION

Journal of Wildlife Diseases, Journal Year: 2025, Volume and Issue: 61(1)

Published: Jan. 31, 2025

This study describes two different doses of dexmedetomidine combined with tiletamine-zolazepam (TZ) for anesthesia in snow leopards (Panthera uncia). A total 11 adult were anesthetized Xining City, Qinghai Province, China from November 2019 to June 2023. We recorded the onset time, duration, head-up and walking time. Vital signs every 5 min during anesthesia. Arterial blood gas analysis was performed approximately 20 after by collecting femoral artery. All results presented as mean±SD. There no significant differences time between protocols. Heart rate, respiratory body temperature, pressure had a gradual decreasing trend, oxygen saturation gradually increased. Our suggest that using at 21.25±1.38 μg/kg 30.95±1.13 TZ 2.07±0.08 mg/kg 2.13±0.15 can provide safe effective leopards.

Language: Английский

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From Part to Whole: Scale-Dependence Habitat Selection by Snow Leopards (Panthera Uncia)

Published: Jan. 1, 2025

Snow leopards (Panthera uncia) are regarded as the most charismatic apex predator in alpine Asia, yet their populations under serious threat from human activities and habitat fragmentation. Ensuring effectiveness of current protected areas is critical for conservation, which necessitates a comprehensive understanding selection patterns at different spatial scales. Here, we conducted five-year camera trap survey snow Qilian Mountains used multi-scale modelling to investigate connectivity. Our results revealed scale-dependence leopard selection. We found that smaller scales, prey resource topographic variables were main factors determining leopards. Particularly, distribution probability primarily determined overall small scale. At larger however, there was stronger correlation between climate well impacts. The scale-optimized multivariate models indicated significant gaps protecting core habitats ensuring landscape More than 50% projected patches not included areas. Areas with highest number (Subei County) corridors (Tianjun also had least half area outside study provides insights conservation planning suggests prioritizing previously overlooked essential corridors.

Language: Английский

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Tracking the Ghosts of the Himalayas: Snow Leopard Conservation Insights From Satellite Collar Data

Ecology and Evolution, Journal Year: 2025, Volume and Issue: 15(1)

Published: Jan. 1, 2025

ABSTRACT This study presents the first movement analysis of snow leopards ( Panthera uncia ) using satellite telemetry data, focusing on northeastern Himalayas Nepal. By examining GPS‐based collar data between 2013 and 2017 from five collared (effectively three individuals), research uncovered distinct patterns, activity budgeting home range utilisation one adult male two sub females. Hidden Markov models (HMMs) revealed behavioural states based patterns—slow (indicative resting), moderate fast (associated with travelling) demonstrated that time day influenced their state. While males exhibited behaviour focused moderately active states, juvenile females presented highly states. Home ranges, estimated over a 5–21 month tracking period, were larger than those observed in previously studied included crossings international boundaries Nepal into China India. These relatively large ranges may be attributed to rugged terrain scarce resources within area. suggested patterns sizes might differ female leopards, which indicate different ecological needs resource‐use techniques. Furthermore, this provides reliable information links it conservation implications ensure long‐term survival, promote coexistence foster cross‐border collaboration.

Language: Английский

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Clinical and physiological evaluation of free-ranging snow leopards immobilized with ketamine-xylazine in emergency situations

Frontiers in Veterinary Science, Journal Year: 2025, Volume and Issue: 12

Published: Feb. 25, 2025

The current study presents data on the immobilization and physiological responses of 26 distressed free-ranging snow leopards (Panthera uncia) in trans-Himalayan regions Ladakh, India, spanning three years from October 2020 to December 2023. Ketamine xylazine were utilized a drug mixture for rescue, rehabilitation, health assessment, other capture purposes, with average doses 6.535 ± 0.93 mgkg-1 1.937 0.41 body weight, respectively. induction occurred at 3.85 1.8 min. Respiratory rate, rectal temperature, heart rate monitored periodically post-induction, all remaining within clinically acceptable ranges. Following an recumbency period 70.69 16.56 min, immobilizations reversed using intramuscular injections Yohimbine 0.147 0.03 leading complete recovery time 24.92 7.08 Our findings suggest that ketamine represents safe effective method immobilizing leopards, particularly emergency scenarios.

Language: Английский

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Lessons for Transboundary Snow Leopard Conservation: Findings From a GPS Telemetry Study in Kangchenjunga Conservation Area, Nepal

Integrative Conservation, Journal Year: 2025, Volume and Issue: unknown

Published: March 26, 2025

ABSTRACT Ensuring the long‐term persistence of snow leopards ( Panthera uncia ) in changing landscapes requires a deep understanding their spatial ecology and movement behavior. To maintain viable metapopulations ensure gene flow between populations, there is an urgent need to develop sound effective conservation plans. This study presents findings from Nepal's first GPS telemetry leopards, shedding light on home range size, habitat selection, transboundary movements. data were collected four leopard individuals Kangchenjunga Conservation Area, eastern Nepal, over tracking periods ranging 20 659 days, yielding total 4707 location points. We used three estimators for analysis: local convex hulls (LoCoH), fixed kernels (Kernel), minimum polygons (MCP). Our results show that sizes 6 97 times larger than previous estimates with LoCoH 310 102 km 2 (MCP = 730 211 two adult females 312 1032 one male. Three crossed international borders five seven times, spending, average, 10%–34% time neighboring countries (China India), 28%–50% ranges overlapping India. demonstrates Nepal have are significantly previously documented frequently cross borders. These extensive movements highlight stronger coordination China, India this key region distributional range.

Language: Английский

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Enhancing ecological connectivity in the Qilian Mountains: Integrating GCA and optimized MST models for ecological corridor construction

Ecological Indicators, Journal Year: 2024, Volume and Issue: 166, P. 112525 - 112525

Published: Aug. 23, 2024

Language: Английский

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