Conditions favouring hard seededness as a dispersal and predator escape strategy

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Conditions favouring hard seededness as a dispersal and predator escape strategy

SUMMERY The water-impermeable seed coat of 'hard' seeds is commonly considered a dormancy trait. Seed smell is, however, strongly correlated with seed water content, and hard seeds are therefore olfactionally cryptic to foraging rodents. This is the rationale for the crypsis hypothesis, which proposes that the primary functions of hard seeds are to reduce seed predation and promote rodent seed ...

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Competition and dispersal in predator-prey waves.

Dispersing predators and prey can exhibit complex spatio-temporal wave-like patterns if the interactions between them cause oscillatory dynamics. We study the effect of these predator-prey density waves on the competition between prey populations and between predator populations with different dispersal strategies. We first describe 1- and 2-dimensional simulations of both discrete and continuo...

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Limited Predator-Induced Dispersal in Whiteflies

Whereas prey are known to avoid habitats with their predators, it is less well established whether they are triggered to emigrate to new habitats when exposed to predators in their current habitat. We studied plant-to-plant dispersal of adult whiteflies in response to the presence of predatory mites on the plant on which the whiteflies were released. These predators attack whitefly eggs and cra...

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ژورنال

عنوان ژورنال: Journal of Ecology

سال: 2014

ISSN: 0022-0477,1365-2745

DOI: 10.1111/1365-2745.12323