Ecological functions of conifer plantation for stream communities

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In Japan, 40% of the total forested areas is covered by plantation forests. However, knowledge of ecological effects of plantation forestry on stream ecosystems is still largely lacking. This study monitored dynamics of allochthonous inputs (fallen leaves, terrestrial insects : i.e., food resources for aquatic insects and fish) from riparian forests to streams, and revealed both negative (low quality and quantity of food for aquatic insects and fish, respectively) and positive (high stability of food for aquatic insects) aspects of conifer plantation for stream biota.