Many species of woody plants in Hawaiian montane forests germinate on nurse logs or epiphytically, often developing aerial roots. This study investigated the role of fallen logs, wood fragments, and other forms of coarse woody debris (CWD; 35 cm diam.) in providing habitat for woody species in a forest with waterlogged soils. Oxidation-reduction potentials (Eh) of root mats and nurse logs (−70.1 to 278.6 mV) were higher than the underlying soil horizons (−203.6 to −128.1 mV). CWD volume varied between 135.9 and 427.9 m3/ha. Live basal area varied between 18.4 and 29.7 m2/ha and increased with total CWD volume. Seedling and sapling abundances on nurse logs were correlated with moss coverage and decomposition class. Moss coverage was the only significant predictor of seedling density on nurse logs, whereas moss coverage and log volume were important for predicting sapling density. The proportion of woody plants established on logs was higher than in a younger Hawaiian montane forest site with well-drained soils.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.
Vol. 32 • No. 4