NDLI: Increased brown bear predation on sika deer fawns following a deer population irruption in eastern Hokkaido, Japan

Content Provider	Springer Nature Link
Author	Kobayashi, Kyoko Sato, Yoshikazu Kaji, Koichi
Copyright Year	2012
Abstract	By the 1970s, brown bears (Ursus arctos) in Hokkaido, northern Japan, were opportunistic omnivores that mainly depended on plant materials. Because the sika deer (Cervus nippon) population irrupted in eastern Hokkaido in the 1990s, we expected that brown bears might prey on sika deer fawns. First, we developed a simple and cost-effective method of monitoring possible bear predation on deer fawns by analyzing the widths of deer hairs remained in bear scats. Based on hair thickness standards, we distinguished the brown bear consumption of deer fawns from adults by analyzing bear scats (n = 108) collected during the deer birthing season (late May–late July) in 1999–2008. To evaluate the importance of fawns to bears, we compared the occurrence of fawn and adult deer hairs in bear scats among three periods (I, 1999–2000; II, 2003–2005; III, 2006–2008) in eastern Hokkaido. The occurrence of fawn hairs in bear scats increased from 12.5 to 27.3 % in volume and from 6.3 to 33.6 % in frequency from period I to period III, whereas adult hairs in scats decreased from 42.8 to 26.1 % in volume and from 34.4 to 22.7 % in frequency during the same time. These data suggest that bears increasingly preyed on deer fawns after the deer population irruption and decreasingly used adult carcasses because of the enforcement of deer carcass treatment by the Hokkaido government.
Starting Page	849
Ending Page	855
Page Count	7
File Format	PDF
ISSN	09123814
Journal	Ecological Research
Volume Number	27
Issue Number	5
e-ISSN	14401703
Language	English
Publisher	Springer Japan
Publisher Date	2012-07-01
Publisher Place	Japan
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Cervus nippon Predation Neonates Food habit Ursus arctos Zoology Plant Sciences Evolutionary Biology Behavioural Sciences Forestry Ecology
Content Type	Text
Resource Type	Article
Subject	Ecology, Evolution, Behavior and Systematics

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Benefit of migration in a female sika deer population in eastern Hokkaido, Japan

Seasonal migration patterns of female sika deer in eastern Hokkaido, Japan

Food habits of sika deer and nutritional value of sika deer diets in eastern Hokkaido, Japan

Adaptive management of sika deer populations in Hokkaido, Japan: theory and practice

Higher mortality of smaller sika deer fawns

Estimating sika deer abundance using camera surveys

Seasonal food habits of a sika deer population in the warm temperate forest of the westernmost part of Honshu, Japan

Population density and group composition of Japanese sika deer (Cervus nippon yakushimae) in an evergreen broad-leaved forest in Yakushima, southern Japan

Efficient management for the Hokkaido population of sika deer Cervus nippon in Japan: accounting for migration and management cost

Increased brown bear predation on sika deer fawns following a deer population irruption in eastern Hokkaido, Japan

Similar Documents

Benefit of migration in a female sika deer population in eastern Hokkaido, Japan

Seasonal migration patterns of female sika deer in eastern Hokkaido, Japan

Food habits of sika deer and nutritional value of sika deer diets in eastern Hokkaido, Japan

Adaptive management of sika deer populations in Hokkaido, Japan: theory and practice

Higher mortality of smaller sika deer fawns

Estimating sika deer abundance using camera surveys

Seasonal food habits of a sika deer population in the warm temperate forest of the westernmost part of Honshu, Japan

Population density and group composition of Japanese sika deer (Cervus nippon yakushimae) in an evergreen broad-leaved forest in Yakushima, southern Japan

Efficient management for the Hokkaido population of sika deer Cervus nippon in Japan: accounting for migration and management cost

Increased brown bear predation on sika deer fawns following a deer population irruption in eastern Hokkaido, Japan