Seasonal changes in forest road use by mammals in a heavy snowfall area, north-eastern Japan: effects of management intensities

Journal of Vertebrate Biology, Journal Year: 2024, Volume and Issue: 73(24001)

Published: April 22, 2024

Forest road use by mammals can vary in response to both the management intensity of forest roads and seasonal changes their environments. We investigated effects heavy snowfall areas on environments with different intensities. The field survey was conducted north-eastern Japan from August 2022 July 2023. Using camera traps, we observed frequency occurrence each species roads, decommissioned interior sites. employed a generalized linear mixed model analyse relationship between events site types seasons. Red foxes occurred significantly more frequently than interiors during all Raccoon dogs selectively used spring winter. However, Japanese martens, hares, wild boar only occasionally roads. These findings suggest that selectivity varies among species, for seasonally.

Language: Английский

---

Vehicular traffic frequency and environmental factors affect forest road use by ground-dwelling mammals in northeastern Japan: Management intensity matters

Forest Ecology and Management, Journal Year: 2024, Volume and Issue: 572, P. 122318 - 122318

Published: Oct. 8, 2024

Language: Английский

---

Most Random-Encounter-Model Density Estimates in Camera-Based Predator–Prey Studies Are Unreliable

Animals, Journal Year: 2024, Volume and Issue: 14(23), P. 3361 - 3361

Published: Nov. 22, 2024

Identifying population-level relationships between predators and their prey is often predicated on having reliable population estimates. Camera-trapping effective for surveying terrestrial wildlife, but many species lack individually unique natural markings that are required most abundance density estimation methods. Analytical approaches have been developed producing estimates from camera-trap surveys of unmarked wildlife; however, strict assumptions can be cryptically violated by survey design characteristics, practitioner choice input values, or behavior ecology. Using multi-year datasets populations an predator its co-occurring prey, we evaluated the consequences violating two requirements random encounter model (REM), one first We also performed a systematic review published REM studies, with emphasis predator-prey ecology studies. Empirical data analysis confirmed findings recent research using detections non-randomly placed cameras (e.g., trails) and/or borrowing movement velocity (day range) values caused volatility in Notably, placing strategically to detect predator, as obtain sufficient sample sizes, resulted substantial estimate inflation both species. Systematic revealed 91% studies were obtained did not meet requirements. suggest considerable caution making conservation management decisions

Language: Английский

---

Use of Linear Features by Woodland Caribou Predators and its Apparent Competitor

Published: Jan. 1, 2023

In managed boreal forests, logging operations constantly maintain levels of anthropogenic disturbance in the ecosystem. These disturbances rejuvenate forest matrix resulting modifications to density and distribution wildlife species, thereby causing decline Woodland Caribou North America. Establishment linear features such as roads landscape is a major factor predator-prey system that negatively affects caribou by promoting numerical functional response its predators. Aided camera traps, we aimed explain, through local factors, how number habitats used snow-free seasons wolves, black bears, lynx moose (apparent competitor caribou) varies on natural features. western Quebec (Canada), site south Val-d’Or encloses an isolated population facing extinction requires active restoration their habitat. this site, stratified random selection gravel (n = 33), winter 28) riparian areas 19) compare characteristics four species. For three predators, differences lateral cover between surroundings feature mainly explain uses. wolf lynx, use respective prey (moose snowshoe hare) positively Grey uses are affected distance higher road class (class 1 2) nearest urban area. A greater percentage hare slightly favours Gravel have highest all but due less important these than surrounding areas. We recommend efforts related closures target with favourable differences. favour movement species responsible for population.

Language: Английский

---