Extreme long-distance seed dispersal via sheep
نویسندگان
چکیده
منابع مشابه
Extremely long-distance seed dispersal by an overfished Amazonian frugivore.
Throughout Amazonia, overfishing has decimated populations of fruit-eating fishes, especially the large-bodied characid, Colossoma macropomum. During lengthy annual floods, frugivorous fishes enter vast Amazonian floodplains, consume massive quantities of fallen fruits and egest viable seeds. Many tree and liana species are clearly specialized for icthyochory, and seed dispersal by fish may be ...
متن کاملAllometric scaling of long-distance seed dispersal by migratory birds.
Migratory birds are often suggested to be important vectors for long-distance dispersal (LDD) of plant and animal propagules. The scale of such dispersal events (hundreds to thousands of kilometers) can influence landscape-level biological processes and species distributions. However, the few vector species studied and the lack of proper integration of their migratory movement in models of LDD ...
متن کاملPseudoseeds: Investigating Long-Distance, Ocean Seed Dispersal with Wireless Sensors
Recent theoretical research has shown that ocean currents and wind interact to disperse seeds over long distances among isolated landmasses. Dispersal of seeds among isolated oceanic islands, by birds, oceans and man, is a well-known phenomenon, and many widespread island plants have traits that facilitate this process. Crucially, however, there have been no mechanistic vector-based models of l...
متن کاملMechanistic analytical models for long-distance seed dispersal by wind.
We introduce an analytical model, the Wald analytical long-distance dispersal (WALD) model, for estimating dispersal kernels of wind-dispersed seeds and their escape probability from the canopy. The model is based on simplifications to well-established three-dimensional Lagrangian stochastic approaches for turbulent scalar transport resulting in a two-parameter Wald (or inverse Gaussian) distri...
متن کاملHuman-mediated long-distance dispersal: an empirical evaluation of seed dispersal by vehicles
Methods Metal plates were covered with a seed-soil slurry, dried and attached to different locations underneath a vehicle. The vehicle was then driven on paved and unpaved roads under both wet and dry conditions. Plates were removed from the vehicle at seven distances between 4 and 256 km. The number of seeds remaining was determined. Four general models were assessed to explain observed seed r...
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ژورنال
عنوان ژورنال: Frontiers in Ecology and the Environment
سال: 2006
ISSN: 1540-9295
DOI: 10.1890/1540-9295(2006)004[0244:elsdvs]2.0.co;2