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Seed dispersal is likely to have several benefits for different plant species. Seed survival is often higher away from the parent plant. This higher survival may result from the actions of density-dependent seed and seedling predators and pathogens, which often target the high concentrations of seeds beneath adults. [4]
An example of the use of landscape genetics as a means to study seed dispersal, for example, involves studying the effects of traffic using motorway tunnels between inner cities and suburban area. [35] Genome wide SNP dataset and species distribution modelling are examples of computational methods used to examine different dispersal modes. [34]
In leptosporangiate ferns, the fern catapults its spores 1-2 cm so they can be picked up by a second dispersal vector, often the wind. [4]Autochory is the dispersal of diaspores, which are dispersal units consisting of seeds or spores, using only the energy provided by the diaspore or the parent plant. [5]
Bison have historically been major seed carriers. Wind is a common method of seed dispersal for prairie vegetation like milkweed, thistle, wild lettuce, goldenrod, aster and other plants that have ...
More than one dispersal vector (abiotic or biotic) is thought to be involved in the majority of seed dispersal events (on average 2.15 dispersal vectors in Dutch ecosystems). [2] Seeds may be transported in turn by various animal or abiotic mechanisms such as wind or water. [1] [3]
In botany, a diaspore is a plant dispersal unit consisting of a seed or spore plus any additional tissues that assist dispersal. In some flowering plants, the diaspore is a seed and fruit together, or a seed and elaiosome. In a few plants, the diaspore is most or all of the plant, and is known as a tumbleweed.
Myrmecochory is exhibited by more than 3,000 plant species worldwide [3] and is present in every major biome on all continents except Antarctica. [4] Seed dispersal by ants is particularly common in the dry heath and sclerophyll woodlands of Australia (1,500 species) and the South African fynbos (1,000 species).
Seeds have evolved traits to reward animals to enhance their dispersal abilities. [5] Differing foraging behaviours of animals can lead to selection of dispersal traits and spatial variation [3] [8] such as increase in seed size for mammal dispersal, which can limit seed production. [9]
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