Seed dispersal by scatter-hoarding rodents in arid environments
نویسندگان
چکیده
منابع مشابه
Context-dependent seed dispersal by a scatter-hoarding corvid.
Corvids (crows, jays, magpies and nutcrackers) are important dispersers of large-seeded plants. Studies on captive or supplemented birds suggest that they flexibly adjust their scatter-hoarding behaviour to the context of social dynamics and relative seed availability. Because many corvid-dispersed trees show high annual variation in seed production, context-dependent foraging can have strong e...
متن کاملContrasting patterns of short-term indirect seed-seed interactions mediated by scatter-hoarding rodents.
It is well known that direct effects of seed predators or dispersers can have strong effects on seedling establishment. However, we have limited knowledge about the indirect species interactions between seeds of different species that are mediated by shared seed predators and/or dispersers and their consequences for plant demography and diversity. Because scatter-hoarding rodents as seed disper...
متن کاملFactors influencing repeated seed movements by scatter-hoarding rodents in an alpine forest
Scatter-hoarding rodents are effective dispersal agents for many plant species. Several studies have shown that rodents repeatedly re-cache seeds. The re-caching process often has a significant impact on final seedling establishment, but the factors determining its occurrence are poorly understood. In this study, we followed the fate of 3564 artificial seeds that varied in size, nutrient conten...
متن کاملDeterminants of seed removal distance by scatter-hoarding rodents in deciduous forests.
Scatter-hoarding rodents should space food caches to maximize cache recovery rate (to minimize loss to pilferers) relative to the energetic cost of carrying food items greater distances. Optimization models of cache spacing make two predictions. First, spacing of caches should be greater for food items with greater energy content. Second, the mean distance between caches should increase with fo...
متن کاملThe Role of Seed Size in Dispersal by a Scatter-hoarding Rodent
Patrick A. Jansen,1 Martijn Bartholomeus,2 Frans Bongers,1 Jelmer A. Elzinga,2,* Jan den Ouden1 and Sipke E. Van Wieren2 1Silviculture and Forest Ecology Group, Department of Environmental Sciences, Wageningen University, PO Box 342, NL-6700 AH Wageningen, The Netherlands; 2Tropical Nature Conservation and Vertebrate Ecology Group, Department of Environmental Sciences, Wageningen University, Bo...
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ژورنال
عنوان ژورنال: Journal of Ecology
سال: 2010
ISSN: 0022-0477
DOI: 10.1111/j.1365-2745.2010.01716.x