Bark stripping behavior in relation to Fagaceae mast production and diet in the Asiatic black bear (<i>Ursus thibetanus</i>)

Mori, Tomoki; Sugiura, Rina; Katô, Makoto; Miura, Kenzo; Ogawa, Haruna; Umano, Syota; Kato, Haruki; Izumiyama, Shigeyuki; Niizuma, Yasuaki

doi:10.1080/13416979.2020.1821440

Cited by 1 publication

(1 citation statement)

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“…On the other hand, bark stripping behavior was not found in Japanese bird cherry. As the result of this study, they concluded that bark stripping behavior was caused due to shortage of food sources, and maybe varied among different regions [20,21].…”

Section: Discussionmentioning

confidence: 92%

Damages to Himalayan White Pine (Pinus wallichiana) by Asiatic Black Bear (Ursus thibetanus) in Kaghan Valley, Pakistan

Ullah

Mahmood

Iqbal

et al. 2021

Forests

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Tree damage is one of the destructive behaviors of the Asiatic black bear (Ursus thibetanus G. (Baron) Cuvier, 1823), and this type of damage causes great economic loss to the forest. A survey about Himalayan white pine (Pinus wallichiana (A. B) Jacks, 1836) damages was conducted at Kaghan Valley, District Mansehra, Khyber Pakhtunkhwa, Pakistan. Field surveys were carried out within five major sites of Kaghan Valley, including Manshi reserve forest, Kamal Bann reserve forest, Malkandi reserve forest, Noori Bichla reserve forest, and some Guzara forests. Line transects and diameter at breast height (DBH) methods were selected for data collection. Eighteen transects were placed in different sites of the valley. A total of (n = 201) affected trees were observed from eighteen transects, along with a total population of 1081 trees with the encounter rate (ER: 0.657) and the mean DBH is x¯ = 71.97 cm. Among total damages, the most severe (n = 39: 19.4%) were fully damaged with a greater encounter rate. Bark stripping was made during the late winter season and used as foodstuff when natural food is limited in the area. In severe cases, the bear-stripped bark encircles from the entire tree trunk, which results in the drying of trees and, finally, falls. Among all five sites, Manshi reserve forest was greatly affected, where the highest number (n = 76) of tree damage, and (n = 21) the entire diameter of trunks were damaged. People of the study area claimed that the black bear causes great forest damage, as well as crop destruction that leads to high economic loss.

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Section: Discussionmentioning

confidence: 92%