エゾシカCervus nipponの個体数推定

抄録

Agriculture/forestry damages caused by wild animals have drastically increased throughout the country. The consolidation of the legal system has been developed, and management plans have been formulated in the local government level. Under the new system, it will be needed to utilize much simpler methods that are appropriate to estimate the population. I applied DeLury's method, one of the most famous and commonly used methods to estimate the population in the science of fisheries, to Hokkaido sika deer using the hunting data. Following results are obtained. Firstly, I examined several assumptions of DeLury's method, and it became clear that the method is suitable for the Hokkaido sika deer estimation. Secondly, the number of Hokkaido sika deer estimated by DeLury's method is quite similar to the Hokkaido Government's estimation results based on another method. As a conclusion, DeLury's method may be a simpler and more precise method of estimating Hokkaido sika deer if using the hunting data.