孤立林に生息するヤマネの行動圏の予備的調査

偏僻森林睡鼠活动范围的初步调查

• 批准号: 20918011
• 负责人: 杉山 昌典
• 金额: $ 0.36万
• 依托单位: University of Tsukuba
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Encouragement of Scientists
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 无数据
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-20918011/
• 关键词: ヤマネ調査; 巣箱改良; 塩ビ管

ヤマネ生態調査用として使用されている木製巣箱の調達・製作・設置は、経済・労力的負担が大きい上に巣箱の耐久性が数年である。そこで昨年度に比較的安価で耐久性の高い、塩化ビニル樹脂製の巣箱(以下塩ビ巣箱と略す)を製作し巣箱調査を行った。しかしヤマネ捕獲数が僅かで巣箱の有効性が確認できなかった。本年度は塩ビ素材と木材を組合せて、より自然に近い巣箱(以下塩ビ改良巣箱と略す)を製作した。製作期間は300個を約7日/人(6個/h・42個/日)かかり、塩ビ巣箱(3日/人・9個/h・63個/日)と比べると1.5倍の労力増となった。塩ビ改良巣箱は図上に約20m間隔の格子状で設置箇所を配したエリアに、円筒部分の径を変えて大型100個(容積500cm^3)・中型100個(容積350cm^3)・小型100個(容積200cm^3)の計300個をハンディGPSで設置場所を特定し、地上高1.2mで樹幹に設置した。結果はヤマネの利用痕跡と思われる樹皮・蘇苔類等の樹上部材が2箇所で確認されたがヤマネそのものは捕獲できず、そのため夜間に暗視鏡を用いたヤマネの行動圏の予備的調査ができなかった。一方、ヒメネズミの利用痕跡と思われるササ・落ち葉等の地上部材は7箇所で確認され、その内2箇所はヒメネズミが繁殖中であった。この巣箱利用状況は昨年度に192個設置した塩ビ巣箱の結果(樹上部材7箇所・地上部材5箇所・ヒメネズミ繁殖1箇所)と余り変わりがなかった。しかし塩ビ巣箱の今年度の利用状況は、樹上部材が14箇所、地上部材が29箇所、ヒメネズミ繁殖は4箇所と増加した。これは塩ビ素材が人工物であるため木製の巣箱よりも警戒されている可能性がある。そこでヤマネ・ヒメネズミの塩ビ素材への慣らし期間が必要かもしれない。したがって塩ビ改良巣箱のヤマネ等の調査の有効性は、単年度の調査結果による判断だけではなく長期的に利用形態の変化をみる必要がある。

The equipment is designed to be used as a device and the durability of the box has been improved for several years. In the last year's comparison, the safety and durability of the box is high, and the box (below) is made into a safe box. The number of catches is limited to the number of traps. It is only possible to confirm that the number of traps is low. This year, the material and wood materials are combined, and the natural materials are close to the box (the following is the summary of the improved box). During the operation period, 300 people spent about 7 days per person (6 hours per person, 42 days per day) and store boxes (3 days per person, 9 days per person, 63 days per day) were 1.5 times more intensive than those during the operation period. There are about 20m cubicles on the improved box, and there are about 20m cubicles, and some of the cubicles are large (500cm ^ 3), medium-sized 100cms (350cm ^ 3) and small (200cm ^ 3). There are 300 remote GPS settings with a height of 1.2m above ground. Results using trace materials such as fur, fur, and other materials, we confirmed that they were used in the dark at night to make sure that they were used to make sure that they were used in the night. On the other hand, it is necessary to make use of the confirmation of the above-ground materials and the breeding of the above-ground materials, such as the above-ground materials, such as the above-ground materials. The test box uses the results of the 192 set-up test boxes in the last year (the above-ground timber of the 7-year-old and the 5-year-old of the above-ground wood are propagated in the first place). The rest of the equipment is used to make full use of the results. This year, the utilization situation, the upper wood 14, the aboveground wood 29, and the breeding plant 4 are reported in this year. The material, the artifact, the wooden box, the alert, the possibility. It is necessary to make sure that it is necessary to make sure that the material is used during the period. In order to improve the quality of the box, there are significant differences in the results of the annual survey, and the results show that the long-term use of morphological information is necessary.