| Titre : | Biological Conservation 163 - JUL 2013 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
Erin L. Kurten, Auteur
Defaunation, driven by hunting and habitat fragmentation, poses a threat to wildlife in tropical forests worldwide and is expected to have cascading effects on other organisms, particularly plant communities. This review summarizes empirical evi[...]
Article
John R. Poulsen, Auteur ;
Connie J. Clark, Auteur ;
Todd M. Palmer, Auteur
Unprecedented rates of logging and hunting threaten to transform the remaining primary tropical forest into a degraded mosaic, emptied of wildlife. Defaunation is expected to interrupt plant-animal interactions with cascading effects for forest [...]
Article
Richard T. Corlett, Auteur
The majority of terrestrial ecosystems outside Africa have lost megafaunal vertebrates (>44 kg) since the Middle Pleistocene and most of these extinctions can be attributed to human influence. This review assesses the likely impacts of prehistor[...]
Article
Taal Levi, Auteur ;
Carlos A. Peres, Auteur
Unregulated hunting of large-bodied frugivores is ubiquitous in tropical forests. Due to their low fecundity and complex social organization, large primates are often the first tropical forest vertebrates to be extirpated by hunting. Large prima[...]
Article
John Terborgh, Auteur
The Janzen-Connell (J-C) model of tropical tree recruitment and diversity has come of age and can now be applied to predict the consequences of defaunation and other disturbances. J-C describes a process of recruitment at a distance that results[...]
Article
Kelsey E. Reider, Auteur ;
Walter P. Carson, Auteur ;
Maureen A. Donnelly, Auteur
Peccaries are known to shape vegetation structure and create important breeding habitat for some pond-breeding amphibians in Neotropical forests. Because peccaries are also important agents of disturbance and microhabitat variation in the litter[...]
Article
Laurence Culot, Auteur ;
Emilie Bovy, Auteur ;
Fernando Zagury Vaz-de-Mello, Auteur ;
Roger Guevara, Auteur ;
Mauro Galetti, Auteur
Overhunting has caused severe decline or local extinction in many large-bodied mammals with direct consequences on plant regeneration, yet little is known about indirect impacts of selective defaunation on commensal species. Cascading effects of[...]
Article
Jedediah F. Brodie, Auteur ;
Anthony Giordano, Auteur
When humans reduce top carnivore abundance in insular systems, herbivore populations may increase, with cascading impacts on the community. But the prevalence of such "trophic release" effects in non-insular ecosystems remains little known, part[...]
Article
Maria Luisa S. P. Jorge, Auteur ;
Mauro Galetti, Auteur ;
Milton C. Ribeiro, Auteur ;
Katia Maria P. M. B. Ferraz, Auteur
Preserving large tracts of natural habitats is essential to maintain biodiversity. Nevertheless, even large areas may still suffer from less "visible" impacts such as loss of ecological processes. Because mapping ecological processes over large [...]
Article
Mariana M. Vidal, Auteur ;
Mathias M. Pires, Auteur ;
Paulo R. Guimaraes, Auteur
Large-bodied frugivores may play a key role in the networks of plants and their seed dispersers. These species, however, are often threatened by human impacts that lead to defaunation. In this paper, we discuss the potential implications of the [...]
Article
Henrique C. Giacomini, Auteur ;
Mauro Galetti, Auteur
Defaunation, originally conceived as the loss of large vertebrates due to hunting or fragmentation, has been widely used in conservation studies yet the term has been arbitrarily used and poorly defined. Here we refine this term by creating a qu[...]
Article
Mauro Galetti, Auteur ;
Rodolfo Dirzo, Auteur
Defaunation, the loss or population decline of medium and large native vertebrates represents a significant threat to the biodiversity of tropical ecosystems. Here we review the anthropogenic drivers of defaunation, provide a brief historical ac[...]
Article
Harald Beck, Auteur ;
Joel W. Snodgrass, Auteur ;
Paporn Thebpanya, Auteur
"Empty forests" in which humans have driven large vertebrate species to extinction lack myriad direct and indirect species interactions. This may alter key ecosystem processes, including trophic cascades, disturbance regimes, and nutrient cyclin[...]
Article
Robert Steinmetz, Auteur ;
Naret Seuaturien, Auteur ;
Wanlop Chutipong, Auteur
Top predators often shape their communities through intraguild predation. Few studies have examined communities in which all three components-top predator, intermediate predators, and prey-occur at low densities; such disturbed systems are commo[...]
Article
Carlos R. Brocardo, Auteur ;
Valesca B. Zipparro, Auteur ;
Renato A. F. de Lima, Auteur ;
Roger Guevara, Auteur ;
Mauro Galetti, Auteur
One of the most intriguing questions in ecology is how to identify which and how many species will be able to inhabit human-modified landscapes. Large-bodied mammals structure plant communities by trampling, herbivory, seed dispersal and predati[...]
