Interactive effects of wood decomposer fungal activities and bryophytes on spruce seedling regeneration on coarse woody debris

• Yoko Ando

• Yu Fukasawa

• Yoshitaka Oishi

抄録

Decaying logs are important seedbeds in boreal and subalpine forests. However, biotic and abiotic factors and their interactions related to seedling colonization patterns on logs remain unclear. In the present study, we evaluated the influence of bryophyte communities, wood decay type (white‐, brown‐, and soft‐rot) owing to decomposer fungal activities, and environmental abiotic factors on seedling establishment in an old‐growth subalpine coniferous forest in Japan. Among the tree species recorded on the conifer logs, Picea jezoensis var. hondoensis was the most dominant. Log surfaces were covered with distinctive patches of liverwort Scapania bolanderi and moss Pleurozium schreberi (approximately 33% cover for each). Redundancy analysis showed that brown‐rot in sapwood significantly affects the bryophyte and seedling community on the logs. Generalized linear models suggested that the total bryophyte cover, Scapania cover, and white‐rot in heartwood positively associate with Picea seedling density, whereas Pleurozium cover and basal area of adjacent Picea adults negatively associate with Picea seedling density. Results of structural equation modeling suggested that the brown‐rot of sapwood positively associates with Scapania cover that has a positive effect on Picea seedling density. Furthermore, brown‐rot of sapwood inhibited the Pleurozium cover, thus contributing to the Scapania dominance on the logs. These results suggest that fungal wood decomposer activities affect colonization of Picea seedlings in an indirect way via structuring bryophyte community on the logs.

収録刊行物

• Ecological research / Ecological Society of Japan

  Ecological research / Ecological Society of Japan 32 (2), 173-182, 2017-03

  Tokyo : Springer Japan

キーワード

• Coniferous subalpine forest
• Decay type
• Liverwort
• Moss
• Spruce

詳細情報

• CRID: 1520573330709138816
• NII論文ID: 40021141454
• NII書誌ID: AA10667816
• ISSN: 09123814
• ISSN: 14401703
• DOI: 10.1007/s11284-016-1427-y
• NDL書誌ID: 028065902
• Web Site: http://id.ndl.go.jp/bib/028065902
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I028065902
• Web Site: http://link.springer.com/content/pdf/10.1007/s11284-016-1427-y.pdf
• Web Site: http://link.springer.com/article/10.1007/s11284-016-1427-y/fulltext.html
• 本文言語コード: en
• NDL 雑誌分類:
  • ZR1(科学技術--生物学)
• データソース種別:
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN