The Relation between Seasonal Migration and Snow Depth
Transcription
The Relation between Seasonal Migration and Snow Depth
Seasonal migration routes of Sika deer and Importance of GPS data Tomomi Kudo SCGIS Scholar JAPAN Non Profit Organization EnVision Conservation Office About Japan Tokyo ・Population:127 million ・Area: 37,790,000 ha ・Capital : Tokyo About Hokkaido Sapporo Blakiston’s fish owl Brown bear ・Endangered species ・full length : 70cm ・wing span : 190cm Steller’s sea eagle ・natural monument ・full length : 100cm ・wing span : 250cm Research & Survey Policy Advocacy Environmental Education Data & Info. Sharing International Cooperation Sika deer(Cervus Nippon) Population Change 70 60 Agriculture and Forestry damage costs (Billion of ¥) Estimated number of deer (Million deer) Number of captured deer (Million deer) 1 dollar = 110 yen 50 40 30 20 10 0 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14(year) Factor of population change ■Predator Sika deer’s predator, wolf was extinct 100 years ago. ■Hunter Hunter’s population is tend to decreasing and aging. ■Climate change Recently, we have less much snow in winter. So that Sika deer doesn’t bother feeding and moving. Influence By Population Change Vegetation damage Eating rare species Eating specific species Feeding Pasture Eating Bark Traffic accident Biodiversity Wild life animals Farmer Forest Owner GPS Collar Satelite Sending Data Sending Data We can see data any time, If you can use internet. GPS Collar Data GPS Coll ar Data Forest Area & Not Forest Area Around Pasture Area Forest Density Forest Density & GPS points Number of Point Density(n = 3918) 1200 1084 points 1000 800 600 400 200 127 points 0 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 1084 points are located Forest Density 100% area. Importance Of GPS Data Thank you. ARIGATOU. ありがとう. [email protected]