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We assessed the pollen and seed dispersal patterns, genetic diversity, inbreeding and spatial genetic structure of Himatanthus drasticus (Apocynaceae), a tree native to the Brazilian Savanna (Cerrado) that is heavily exploited for its medicinal latex. The study was conducted in the Araripe National Forest, Ceará State, Brazil. Within a one-hectare plot, samples were collected from all adult trees,...
The Ebro, the largest Iberian river draining into the Mediterranean, historically supported one of the most important twaite shad (Alosa fallax) populations in the region. However, during the twentieth century multiple anthropogenic changes caused a severe decline and the presumed extinction of this species from the river by the 1970s. Its unexpected reappearance in 2004 thus provoked sound interest...
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