A model of caching depth: implications for scatter hoarders and plant dispersal.

摘要: The ability of foragers to detect stored seeds and nuts is known decrease with increasing depth at which scatter hoarders bury these food items. Depth burial influence the seedlings emerge establish if are not discovered by foragers. These two patterns combined in a model caching depth, implications for plant propagules explored. Optimal where probable recoverable energy cache discounted make retrieve greatest. propagule probability it escaping detection forager times that will germinate, emerge, survive absence predation maximized. Certain aspects were tested yellow pine chipmunks seed antelope bitterbrush field laboratory experiments. depths yielding greatest estab...