Ecology and evolution of flowering plant dominance

Birds and mammals are important seed dispersers and their diversification in the Cretaceous may have created niches for many plant specialists on scattered resources. Maintaining sexual recombination through wind pollination in such sparse populations is difficult, and so angiosperms with their sophisticated systems for insect pollination were favored in many critical situations.     

广东地区外来植物南美蟛蜞菊入侵的历史阶段与特点

广东是物种跨国界、跨洲界迁移最为密集的省份之一.南美蟛蜞菊是广东地区主要的外来入侵植物,对本土植物的生存及生态环境的稳定性造成严重威胁.广东地区南美蟛蜞菊的入侵可分为3个历史阶段:引进利用与逸生建群时期、大规模暴发与危害时期、防治与利用共存时期.南美蟛蜞菊在广东快速扩散蔓延主要因为盲目绿化种植,化感作用则是其造成危害的主要手段.