Data/hora: 17/06/2024 09:57:08

Provedor de dados: | 36
País: | Brazil
Título: | A survey of micorrhizal infection in an amazonian rain forest
Autores: | John,T. V.St.
Data: | 1980-09-01
Ano: | 1980
Resumo: | Abstract A survey of mycorrhizal infection and depth of rootlets was carried out on a hectare of primary rain forest in which all individuals over 15 cm in diameter had been identified and labeled. Non-mycorrhizal, lightly infected, moderately infected, and heavily infected species made up 16.7, 23.2, 14.8, and 16.7%, respectively, of the total plot's ecological importance value. Of the plot's total importance value, 59.9% were found to have fine roots in the 0- to 10-cm depth range, 7%. to be in the 10-to 30-cm range, and 7.9% to have roots deeper than 30 cm. A strong association was found between root depth and mycorrhizal condition, with surface roots much more likely to be infected than deep roots. Rootlet depth was shown to be a consistent trait within a species and most often within a genus. The deep-rooted, non-mycorrhizal condition was interpreted as an ecological "strategy" for avoiding competition with more efficient mycorrhizal species.
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59671980000300527
Editor: | Instituto Nacional de Pesquisas da Amazônia
Relação: | 10.1590/1809-43921980103527
Formato: | text/html
Fonte: | Acta Amazonica  v.10 n.3 1980
Fonte: | info:eu-repo/semantics/openAccess