![]() ![]() ![]() ![]() Neste trabalho apresentamos uma meta-análise exaustiva das mudanças nas densidades populacionais e outras estimativas de abundância de 30 espécies de maméferos, aves e répteis de médio a grande porte em 101 sítios de florestas neotropicas caçados ou não, mas por outro lado não sujeitos a um histórico de perturbação de habitat. ![]() The implications of hunting for seed dispersal are discussed in terms of community dynamics in semi-defaunated tropical forests.Populações de vertebrados respondem direta ou indiretamente à pressão de caça de formas variáveis dependendo do histórico de caça e da produtividade primária de um determinado sítio florestal, assim como das taxas vitais de cada espécie. Frugivorous species showed more marked declines in abundance in heavily hunted sites than seed predators and browsers, regardless of the effects of body size. Body size significantly affected the direction and magnitude of abundance changes, with large-bodied species declining faster in overhunted sites. Of the 30 species examined, 22 declined significantly at high levels of hunting. Populations of all species combined declined across greater differences in hunting pressure by up to 74.8 percent from their numeric abundance in less intensively hunted sites, but harvest-sensitive species faired far worse. Average nested changes in abundance across increasingly greater levels of hunting pressure ranged from moderately positive to highly negative. This resulted in 25 geographic clusters of sites within which 1811 population abundance estimates were compared across different levels of hunting pressure. The data set was analyzed using both an unnested approach, based on population density estimates, and a nested approach in which pairwise comparisons of abundance metrics were restricted to geographic groups of sites sharing similar habitat and soil conditions. We provide a comprehensive meta-analysis of changes in population density or other abundance estimates for 30 mid-sized to large mammal, bird and reptile species in 101 hunted and nonhunted, but otherwise undisturbed, Neotropical forest sites. Vertebrate responses to hunting are widely variable for target and nontarget species depending on the history of hunting and productivity of any given site and the life history traits of game species. ![]()
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