The distribution and abundance of the Japanese pygmy woodpecker <i>Dendrocopos kizuki</i> and lesser spotted woodpecker <i>D. minor</i> in central and southeastern Hokkaido.

DOI Web Site

Bibliographic Information

Other Title
  • 北海道中部・南東部におけるコゲラとコアカゲラの繁殖期の生息状況
  • ホッカイドウ チュウブ ・ ナントウブ ニ オケル コゲラ ト コアカゲラ ノ ハンショクキ ノ セイソク ジョウキョウ

Search this article

Abstract

<p>The Japanese pygmy woodpecker (JPW) Dendrocopos kizuki and lesser spotted woodpecker (LSW) D. minor were surveyed along 1,009 2-km transects situated in 900 quadrats (4.5km×5km), in central and southeastern Hokkaido from late April to early July, 1976-2014. JPW occurred in 239 quadrats (30%) and 285 transects (28%) and the corresponding values for LSW were 26 quadrats (3%) and 27 transects (3%). The occurrence frequencies for JPW, were 0% in Siberian dwarf pine forests, 33% in ever-green coniferous forests, 54% in mixed forests, 56% in deciduous broad-leaved forests, 20% in larch plantations, 22% in agricultural lands with woods, 5% in agricultural lands and 2% in residential areas. The corresponding values for LSW were 0, 0, 0, 1, 0, 7, 2 and 0%, respectively. For JPW the occurrence frequencies at less than 200m above sea level (asl), 201-400m asl, 601-800m asl, 601-800m asl and 801m asl or above were 23, 37, 50, 50 and 1%, respectively. The corresponding values for LSW were 4, 2, 0, 0 and 0%, respectively. Average numbers of birds per 2km in different habitats ranged from 0.02 to 0.6 for JPW and from 0.01 to 0.1 for LSP.</p>

Journal

Keywords

Details 詳細情報について

Report a problem

Back to top