皇居における土壌性ハネカクシ類の多様性モニタリング

概要

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In 2000 to 2003, the terrestrial staphylinoid fauna was quantitatively surveyed at nine stations (TK01-TK09) six times a year for each in the garden of the Imperial Palace, Tokyo, Japan. Each staphylinoid sample was extracted by Tullgren funnel from leaf litter and humus of five quadrats each sized 1m×1m. Sixty-two species of four families were recognized, 13 species of them being recorded for the first time from the Imperial Palace. Species diversity and similarity of six communities were analyzed by three diversity indices (Shanon-Weaner function H', Pielou's index of equitability J' and total diversity H'N) and three similarity indices (Jaccard's coefficient of community CC, Nomura-Simpson's coefficient NSC and Pianka's overlap index α). In the comparison of species diversity, TK03 was significantly low in H' and H'N and the other five were not different. In TK01 to TK03 surveyed in 2000-2001, the diversity was high in January to May, in a low level in July, and recovered in September; on the other hand, it decreased more or less in June to October in TK07 to TK09 (2002-2003). As to the similarity of species component, TK07 harbored many species completely covering the faunas of TK01, TK02 and TK03. A significant difference of TK09 in overlap similarity was indicated in an analysis by Pianka's α.
国立科学博物館の論文
2006-03-27