生化它感的生态重要性

The Ecological Importance of Allelopathy

生化它感(物种间的化学相互作用)广泛存在于自然群落中。本文研究生化它感物种的分布、相互作用条件和物种多样性保持,以及外来植物种入侵的生化它感。生化它感在干扰性竞争、协同进化、物种识别与共存中有重要作用。

Allelopathy(i.e.,chemical interaction among species)was originally conceived as inclusive of positive and negative effects of plants on other plants,and we adopt this view.Most studies of allelopathy have been phenomenological;but we focus on studies that have explored the ecological significance of this interaction.The literature suggests that studies of allelopathy have been particularly important for three foci in ecology:species distribution,conditionality of interactions,and maintenance of species diversity.There is evidence that allelopathy influences local distributions of plant species around the world.Allelopathic conditionality appears to arise through coevolution,and this is a mechanism for plant invasions.Finally;allelopathy promotes species coexistence via intransitive competition,modifications of direct interactions;and(co)evolution.Recent advances additionally suggest that coexistence might be favoured through biochemical recognition.The preponderance of phenomenological studies notwithstanding,allelopathy has broad ecological consequences.