| Titre : | Biological Conservation 137(1) - JUN 2007 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
Marina Barilani, Auteur ;
Ariane Bernard-Laurent, Auteur ;
Nadia Mucci, Auteur ;
Cristiano Tabarroni, Auteur ;
Salit Kark, Auteur ;
Jose Antonio Perez Garrido, Auteur ;
Ettore Randi, Auteur
The decline of over-hunted red-legged (Alectoris rufa) and rock (A. graeca) partridge populations has been contrasted with massive releases of captive-reared birds, often hybrids with non-indigenous A. chukar. Released interspecific hybrids rais[...]
Article
David A. Hetherington, Auteur ;
Martyn L. Gorman, Auteur
In previous centuries human activities had a profound effect on the distribution of Eurasian lynx (Lynx lynx) in Europe. The species has since been reintroduced to several areas but still much former range remains unoccupied. A relatively poor c[...]
Article
Kamran Safi, Auteur ;
Barbara Koenig, Auteur ;
Gerald Kerth, Auteur
When habitats are declining, niche segregation by demographic groups, such as the two sexes, can have a profound impact on the extinction risk of a species as a whole. Thus, differences in the requirements of demographic groups are of importance[...]
Article
E. Nichols, Auteur ;
T. Larsen, Auteur ;
S. Spector, Auteur ;
A. L. Davis, Auteur ;
F. Escobar, Auteur ;
M. Favila, Auteur ;
K. Vuline, Auteur
Although insects are crucial for maintaining ecosystem function, our understanding of their overall response to human activity remains limited. This is no less true of dung-burying beetles (Coleoptera: Scarabaeidae: Scarabaeinae), which provide [...]
Article
F. Hernan Vargas, Auteur ;
Robert C. Lacy, Auteur ;
Paul J. Johnson, Auteur ;
Antje Steinfurth, Auteur ;
Robert J. M. Crawford, Auteur ;
P. Dee Boersma, Auteur ;
David W. Macdonald, Auteur
Small populations are vulnerable to long-term declines, even where short-term censuses indicate increasing trends in numbers. Census data for the Galapagos penguin (Spheniscus mendiculus) collected between 1970 and 2004 provide evidence that des[...]
Article
Judith A. Zbinden, Auteur ;
Adrian Aebischer, Auteur ;
Dimitris Margaritoulis, Auteur ;
Raphaël Arlettaz, Auteur
Female sea turtles typically lay several clutches during each nesting season and rest in the time between laying clutches (the internesting period) in the waters off the nesting beach. Adequate protection of turtles in the internesting area requ[...]
Article
Jani Heino, Auteur ;
Janne Soininen, Auteur
We examined the utility of using genera and families as surrogates of species-level assemblage patterns. We assessed cross-taxonomic level congruence, as well as taxonomic structure-environment and taxon richness-environment relationships in str[...]
Article
Miguel Delibes-Mateos, Auteur ;
Steve M. Redpath, Auteur ;
Elena Angulo, Auteur ;
Pablo Ferrerasa, Auteur ;
Rafael Villafuerte, Auteur
A keystone species is one that is crucial in maintaining the organization and diversity of their ecological communities. We tested the idea that rabbits act as a keystone species in southern Europe by exploring relationships between rabbit abund[...]
Article
Javier García, Auteur ;
Susana Suarez-Seoane, Auteur ;
David Miquelez, Auteur ;
Patrick E. Osborne, Auteur ;
Carlos Zumalacárregui, Auteur
Little bustard populations have suffered reduction and isolation as a consequence of landscape transformations resulting from changes in traditional agricultural systems. Consequently, the species survives within reduced and fragmentary habitats[...]
Article
Mi Yoon Chung, Auteur ;
John D. Nason, Auteur
Populations of many orchids, especially terrestrial species, have been rapidly decreasing due to mass collection by plant sellers and enthusiasts. Given the presumably negative demographic and genetic consequences, such anthropogenic activity sh[...]
Article
Matthew Linkie, Auteur ;
Yban Dinata, Auteur ;
Agung Nugroho, Auteur ;
Iding Achmad Haidir, Auteur
Tropical mammals represent some of the most threatened species, but also the least known because they tend to be difficult to study. To objectively evaluate the conservation status of these species, standardized methods are urgently required. Th[...]
Article
Jeffrey R. Row, Auteur ;
Gabriel Blouin-Demers, Auteur ;
Patrick J. Weatherhead, Auteur
Roads negatively affect animal populations by presenting barriers to movement and gene flow and by causing mortality. We investigated the impact of a secondary road on a population of black ratsnakes (Elaphe obsoleta) in Ontario, Canada by radio[...]
Article
Landscape alterations by humans can change patterns of parasite transmission. Depending on the type alteration and the life histories of parasites and hosts, parasitism may increase or decrease. To investigate whether parasitism in tropical amph[...]
Article
Leonie E. Valentine, Auteur ;
Lin Schwarzkopf, Auteur ;
Christopher N. Johnson, Auteur ;
Anthony C. Grice, Auteur
Fire plays a pivotal role in structuring ecosystems and often occurs as a human-mediated disturbance for land management purposes. An important component of fire regime is the season of burn. In tropical savannas, most fire management occurs dur[...]
Article
Robert H. Hilderbrand, Auteur ;
Robert H. Gardner, Auteur ;
Mary J. Ratnaswamy, Auteur ;
Cherry E. Keller, Auteur
In addition to the combined effects of forest fragmentation, habitat loss, and population isolation on the long-term persistence of many species including the endangered Delmarva fox squirrel (Sciurus niger cinereus), future changes in climate m[...]
