Status of the hazel grouse in Hokkaido, Japan in 1923-93
1995
Fujimaki, Y. (Obihiro Univ. of Agriculture and Veterinary Medicine, Hokkaido (Japan))
Hazel Grouse were formerly numerous and widely distributed in Hokkaido, Japan, but there has been a big decrease since the 1970s, associated with an increase in red foxes. In 1987-93, sample counts showed Hazel Grouse in 40-60% of natural forests but not in larch plantations. In these natural forests, densities of Hazel Grouse were c. 0.5 - 0.8 birds/2 km transect in sample areas
اظهر المزيد [+] اقل [-]الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)
المعلومات البيبليوغرافية
تم تزويد هذا السجل من قبل Istituto di Servizi per il Mercato Agricolo Alimentare