The ecological status of bracken

摘要: Information about the morphology of bracken (Pteridium aquilinum (L.) Kuhn var. aquilinum) and chief nutrients in frond at different times year introduce an account litter production its accumulation relation to behaviour frond, root rhizome systems. Where gain exceeds loss there is a correlation between thickness and/or kind level systems mineral soil surface: with increase becomes progressively more dependent for physical chemical environment on own debris less underlying soil. An example limit complete dependence has not been examined, but degeneration community can take place before that stage reached. From review factors affecting conclusion reached woodland habitat both favourable restrictive: it equilibrium environment, high social status. The relationship other plant communities depends largely degree human interference which each subject. Dominant when left alone, where loss, victim success; local opens way entry by species.