Induced seed dispersal of Cecropia hololeuca (Urticaceae) by birds and mammals in a restored area at APA Campinas, Campinas - SP

Natal Dispersal in Birds & Mammals

Density-dependent dispersal in birds and mammals

Density-dependent dispersal can be caused by various mechanisms, from competition inducing individuals to emigrate (positive density-dependence) to social crowding effects impeding free movement (negative density-dependence). Various spatial population models have incorporated positively density-dependent dispersal algorithms, and recent theoretical models have explored the conditions for densi...

Overseas seed dispersal by migratory birds.

Long-distance dispersal (LDD) promotes the colonization of isolated and remote habitats, and thus it has been proposed as a mechanism for explaining the distributions of many species. Birds are key LDD vectors for many sessile organisms such as plants, yet LDD beyond local and regional scales has never been directly observed nor quantified. By sampling birds caught while in migratory flight by ...

Introduced birds incompletely replace seed dispersal by a native frugivore

The widespread loss of native species and the introduction of non-native species has important consequences for island ecosystems. Non-native species may or may not functionally replace the role of native species in ecological processes such as seed dispersal. Although the majority of Hawaii's native plants require bird-mediated seed dispersal, only one native frugivore, Omao (Myadestes obscuru...

Remote Sensing Research at the State University of Campinas , Brazil