Pollen and seed dispersal of Brazil nut trees in the southwestern Brazilian Amazon.
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In trees, patterns in pollen/seed dispersal and seedling establishment predominantly determine population genetic structure. Pollen dispersal has fundamental evolutionary implications, because it significantly influences genetic processes such as gene exchange among spatially isolated populations. We, thus, hypothesized that seed dispersal by scatterhoarding rodents reaches greater distances than those reported in seed- or fruit-tracking studies. Furthermore, we also hypothesized that pollen-dispersal distances are shorter in high-density stands. To test these hypotheses, we investigated two sites in the southwestern Brazilian Amazon that differ in adult density.
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Castanha do brasil, Nuez del brasil, Fluxo gênico, Diseminación de semillas, Dispersión de esporas, Flujo genético, Variación genética, Rio Acre, Amazônia Ocidental, Western Amazon, Amazonia Occidental, Castanha do Para, Bertholletia Excelsa, Dispersão de Semente, Pólen, Variação Genética, Brazil nuts, Seed dispersal, Spore dispersal, Gene flow, Genetic variation