Seasonal patterns in post-dispersal seed predation ofAbutilon theophrastiandSetaria faberiin three cropping systems
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چکیده
منابع مشابه
Post-dispersal seed predation in relation to selection on seed size in Dithyrea californica
Question: We asked whether a desert ant population and a community of heteromyid rodents select Dithyrea californica seeds in relation to their size, frequency of seed sizes, and absolute density and thus have the capacity to influence natural selection on seed size. Hypothesis: Following the predictions of optimal diet theory, we hypothesized that seed predators will prefer to prey upon larger...
متن کاملPatterns of movement and seed dispersal by three lemur species.
We combined data on gut-passage times, feeding, and movement to explore the patterns of seed dispersal by Eulemur rubriventer, Eulemur rufrifrons, and Varecia variegata editorum lemurs in Ranomafana National Park, Madagascar. These lemur species deposited less than half of their consumed seeds >100 m away from conspecific trees (40-50%). Long-distance dispersal (>500 m) was rare and average dis...
متن کاملPost-dispersal weed seed predation in Michigan crop fields as a function of agricultural landscape structure
Weed seed predation by invertebrates and vertebrates was compared between a simple (large crop fields embedded in a matrix of widely scattered woodlots and hedgerows) and a complex (small crop fields embedded in a matrix of numerous hedgerows and woodlots) agricultural landscape in southern Michigan. The structural differences between landscapes were evaluated by analysis of aerial photographs ...
متن کاملPre-Dispersal Seed Predation in a Species-Rich Forest Community: Patterns and the Interplay with Determinants
Pre-dispersal seed predation (PDSP) is commonly observed in woody plants, and recognized as a driver of seed production variability that is critical for successful regeneration. Earlier studies on PDSP and its determinants were mostly species specific, with community-level PDSP rarely estimated; and the interactions between the temporal variability of seed production and PDSP remain elusive. In...
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ژورنال
عنوان ژورنال: Journal of Applied Ecology
سال: 2006
ISSN: 0021-8901
DOI: 10.1111/j.1365-2664.2006.01198.x