|| 要旨トップ | 本企画の概要 |||日本生態学会第65回全国大会 (2018年3月、札幌) 講演要旨
シンポジウム S04-5 （Presentation in Symposium）
Resources and consumers move across habitat boundaries. Timing, duration, and magnitude of these movements are often phenologically variable, driven by multi-species assemblages of consumers and resources with species-specific phenologies. Moreover, future climate changes may affect phenologies of individual species, which could further mediate phenological variation of across-habitat movements. Despite widely-appreciated recognition of the importance of across-habitat movements on community dynamics, consequences of their phenological variation have been poorly explored. In this talk, I describe two modeling approaches that address consequences of phenological variation in across-habitat movements on community and disease dynamics. First, I introduce a modeling study on consumer-resource dynamics in which stage-structured consumers receive phenologically-variable resource subsidies. I ask specifically about how differentiated phenological availability to different consumer stages induce indirect effects on the abundance of consumer’s in situ resources. The second model describes host-parasite dynamics in which parasites, through their life cycles, utilize aquatic and terrestrial hosts as vectors to move between aquatic and terrestrial habitats. Phenological diversity of across-habitat host movements affect parasite persistence and prevalence, as well as the stability of parasite population dynamics. Results from these two modeling approaches highlight underappreciated roles of phenological variation in the assemblages of across-habitat consumer and resource movements in driving community and disease dynamics.