| Titre : | Biological Conservation 143(9) - SEP 2010 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
Irene Sanchez-Gallen, Auteur ;
Francisco Javier Alvarez-Sanchez, Auteur ;
Julieta Benitez-Malvido, Auteur
We characterized the tree seedling community within seven forest fragments of different size (3-640 ha) at Los Tuxtlas, Mexico. We considered individual density, species richness, diversity, composition and functional group (shade tolerant, non-[...]
Article
Thaddeus K. Miller, Auteur ;
Craig R. Allen, Auteur ;
Wayne G. Landis, Auteur ;
James W. Merchant, Auteur
Although the consequences of the homogenization of Earth's flora and fauna are not well understood, experts agree that biological invasions pose hazards to rare species. As a result, there is a need for a systematic approach to assess risks from[...]
Article
Tobias Jeppsson, Auteur ;
Anders Lindhe, Auteur ;
Ulf Gardenfors, Auteur ;
Par Forslund, Auteur
Long term data to estimate population trends among species are generally lacking. However, Natural History Collections (NHCs) can provide such information, but may suffer from biases due to varying sampling effort. To analyze population trends a[...]
Article
Svein-Hakon Lorentsen, Auteur ;
Kjersti Sjotun, Auteur ;
David Grémillet, Auteur
Coastal kelp forest ecosystems provide important habitats for a diverse assemblage of invertebrates, fish and marine top-predators such as seabirds and sea mammals. Although kelp is harvested industrially on a worldwide scale little is known abo[...]
Article
I discuss future challenges and opportunities in genetic approaches to biodiversity conservation. Resolving taxonomy uncertainties and identifying diverged evolutionary units within species are both bedevilled by a plethora of definitions: the c[...]
Article
Andres Vina, Auteur ;
Mao-Ning Tuanmu, Auteur ;
Weihua Xu, Auteur ;
Yu Li, Auteur ;
Zhiyun Ouyang, Auteur ;
Ruth DeFries, Auteur ;
Jianguo Liu, Auteur
The range-wide habitat status of many endangered species is unclear. We evaluated the status and spatial distribution of the habitat of the endangered giant panda (Ailuropoda melanoleuca) across its entire geographic range (i.e., six mountain re[...]
Article
Don A. Driscoll, Auteur ;
David B. Lindenmayer, Auteur ;
Andrew F. Bennett, Auteur ;
Michael Bode, Auteur ;
Ross A. Bradstock, Auteur ;
Geoffrey J. Cary, Auteur ;
Michael F. Clarke, Auteur ;
Nick Dexter, Auteur ;
Rod Fensham, Auteur ;
Gordon Friend, Auteur ;
Malcolm Gill, Auteur ;
Stewart James, Auteur ;
Geoff Kay, Auteur ;
David A. Keith, Auteur ;
Christopher MacGregor, Auteur ;
Jeremy Russell-Smith, Auteur ;
David Salt, Auteur ;
James E. M. Watson, Auteur ;
Richard J. Williams, Auteur ;
Alan York, Auteur
Knowing how species respond to fire regimes is essential for ecologically sustainable management. This axiom raises two important questions: (1) what knowledge is the most important to develop and (2) to what extent can current research methods [...]
Article
Ildiko Kiraly, Auteur ;
Peter Odor, Auteur
The effect of tree species, stand structure, landscape and historical variables was studied on the species composition, species richness and cover of epiphytic bryophyte assemblages in mixed deciduous-coniferous forests of Western Hungary. Stand[...]
Article
Ian D. Craigie, Auteur ;
Jonathan E. M. Baillie, Auteur ;
Andrew Balmford, Auteur ;
Chris Carbone, Auteur ;
Ben Collen, Auteur ;
Rhys E. Green, Auteur ;
Jon M. Hutton, Auteur
Protected areas (PAs) are the cornerstone of global conservation efforts but their performance in maintaining populations of their key species remains poorly documented. Here, we address this gap using a new database of 583 population abundance [...]
Article
Jacek Radwan, Auteur ;
Aleksander W. Demiaszkiewicz, Auteur ;
Rafal Kowalczyk, Auteur ;
Jacek Lachowicz, Auteur ;
Agata Kawalko, Auteur ;
Jan M. Wojcik, Auteur ;
Anna M. Pyziel, Auteur ;
Wieslaw Babik, Auteur
Parasites are thought to increase the risk of host extinction, but their dynamics in endangered species have not been well investigated. The free-living European bison population in Bialowieza Forest has recently been massively invaded by a bloo[...]
Article
Marion Pfeifer, Auteur ;
Nicodemo G. Passalacqua, Auteur ;
Stefan Bartram, Auteur ;
Bertrand Schatz, Auteur ;
Antonio Croce, Auteur ;
Pete D. Carey, Auteur ;
Heide Kraudelt, Auteur ;
Florian Jeltsch, Auteur
How populations from different regions within the distribution of a species contribute to the adaptive potential and survival of that species has important implications for formulating conservation actions. We test assumptions of concepts on geo[...]
Article
Darren M. Parsons, Auteur ;
Mark A. Morrison, Auteur ;
Matthew J. Slater, Auteur
Quantifying the movement of exploited species inside marine reserves is a popular research topic, yet few studies have quantified movement inside and outside of reserves. If individuals inside reserves behave differently to those outside, this i[...]
Article
Izak P. J. Smit, Auteur ;
Sam M. Ferreira, Auteur
The potential consequences of growing elephant populations are a cause of debate and concern in many African conservation areas. Even though space use of elephants is central to understanding their biodiversity consequences, few studies explicit[...]
Article
The ability of a taxon to maintain adaptive flexibility in a stochastic environment is a function of the genetic diversity within the population. In small, fragmented populations, genetic variation can become depleted more quickly than in larger[...]
Article
R. H. Marrs, Auteur ;
Roger Kitching, Auteur
Article
Disentangling effects of habitat diversity and area on orthopteran species with contrasting mobility
Lorenzo Marini, Auteur ;
Riccardo Bommarco, Auteur ;
Paolo Fontana, Auteur ;
Andrea Battisti, Auteur
Loss of semi-natural grasslands and reduction of habitat diversity are considered major potential threats to arthropod diversity in agricultural landscapes. The main aim of this study was to investigate how area and habitat diversity, mediated b[...]
Article
Péter Batáry, Auteur ;
Theda Matthiesen, Auteur ;
Teja Tscharntke, Auteur
Hedges provide important nesting, feeding and sheltering sites for birds in agricultural areas, while organic farming also enhances farmland birds. However, it is little known how the interaction of these local variables (amount of hedges and or[...]
Article
Tatsuya Amano, Auteur ;
Tamás Székely, Auteur ;
Kazuo Koyama, Auteur ;
Hitoha Amano, Auteur ;
William J. Sutherland, Auteur
The loss of biodiversity is an ongoing problem and it is essential that a framework is established for revealing the status, identifying threats and monitoring future changes of populations. This study focuses on wader populations in the East As[...]
Article
Christina M. Kennedy, Auteur ;
Peter P. Marra, Auteur
Maintaining animal movement in fragmented landscapes depends upon the levels of connectivity among habitat patches, which in turn may depend upon the landscape matrix. Little is known about how the matrix affects dispersal abilities, in part bec[...]
Article
Chris B. Thaxter, Auteur ;
Andrew C. Joys, Auteur ;
Richard D. Gregory, Auteur ;
Stephen R. Baillie, Auteur ;
David G. Noble, Auteur
Population declines are now evident across many taxa, but within each assemblage there is often considerable variation in constituent population trends. We used bird population trends produced from the BTO/JNCC Common Birds Census (CBC) and the [...]
Article
Julie A. Heinrichs, Auteur ;
Darren J. Bender, Auteur ;
David L. Gummer, Auteur ;
Nathan H. Schumaker, Auteur
A principal challenge of species conservation is to identify the specific habitats that are essential for long-term persistence or recovery of imperiled species. However, many commonly used approaches to identify important habitats do not provid[...]
Article
Snake prices and crocodile appetites: Aquatic wildlife supply and demand on Tonle Sap Lake, Cambodia
Sharon E. Brooks, Auteur ;
Edward H. Allison, Auteur ;
Jennifer A. Gill, Auteur ;
John D. Reynolds, Auteur
Commercial trade is a major driver of over-exploitation of wild species, but the pattern of demand and how it responds to changes in supply is poorly understood. Here we explore the markets for snakes from Tonle Sap Lake in Cambodia to evaluate [...]
Article
Kyle Barrett, Auteur ;
Brian S. Helms, Auteur ;
Craig Guyer, Auteur ;
Jon E. Schoonover, Auteur
Sufficient data have been collected to document negative effects of urbanization on many abiotic parameters, aquatic insects, and fish. Recently, stream-breeding salamanders have been observed to decrease in density in urban areas. We employed a[...]
Article
Joachim Claudet, Auteur ;
Simonetta Fraschetti, Auteur
Habitat destruction is one of the main threats to environmental integrity. Assessing the consequences of human impacts is crucial both to predict and prevent structural and functional changes of habitats. However, to date almost all studies on m[...]
Article
Graeme P. Elliott, Auteur ;
Peter R. Wilson, Auteur ;
Rowley H. Taylor, Auteur ;
Jacqueline R. Beggs, Auteur
Common, widespread species are important for ecosystem structure and function. Although such species have declined in some parts of the world, for most ecosystems there is a lack of information about changes in the population status of common sp[...]
Article
Steven J. Phillips, Auteur ;
Aaron Archer, Auteur ;
Robert L. Pressey, Auteur ;
Desmond Torkornoo, Auteur ;
David Applegate, Auteur ;
David Johnson, Auteur ;
Matthew E. Watts, Auteur
Indices for site prioritization are widely used to address the question: which sites are most important for conservation of biodiversity? We investigate the theoretical underpinnings of target-based prioritization, which measures sites' contribu[...]
Article
Simone Libralato, Auteur ;
Marta Coll, Auteur ;
Milena Tempesta, Auteur ;
Alberto Santojanni, Auteur ;
Maurizio Spoto, Auteur ;
Isabel Palomera, Auteur ;
Enrico Arneri, Auteur ;
Cosimo Solidoro, Auteur
This study presents a comparative analysis of protected and exploited Mediterranean Sea food webs using standardized ecological models of two ecosystems: the Central-North Adriatic Sea (highly exploited) and the Miramare Natural Marine Reserve ([...]
Article
David Sewell, Auteur ;
Trevor J. C. Beebee, Auteur ;
Richard A. Griffiths, Auteur
Mobilising volunteers to carry out biodiversity assessments can help to identify priorities for conservation across broad geographical scales. However, even when volunteers carry out simple presence-absence surveys, there can be significant issu[...]
Article
Dalia A. Conde, Auteur ;
Fernando Colchero, Auteur ;
Heliot Zarza, Auteur ;
Norman L. Christensen, Auteur ;
Joseph O. Sexton, Auteur ;
Carlos Manterola, Auteur ;
Cuauhtemoc Chavez, Auteur ;
Antonio Rivera, Auteur ;
Danae Azuara, Auteur ;
Gerardo Ceballos, Auteur
Competition for mates, cub rearing, and other behaviors differ between males and females in large carnivores. Although these differences can be reflected in patterns of habitat use, gender has rarely been incorporated into habitat models. We eva[...]
Article
Patrick A. Leighton, Auteur ;
Julia A. Horrocks, Auteur ;
Donald L. Kramer, Auteur
Most wild animals show direct negative responses to human disturbance; however, disturbance may also have positive indirect effects by altering species interactions. In the Caribbean, introduced mongooses (Herpestes javanicus) are an important d[...]
Article
Stein Joar Hegland, Auteur ;
Jennifer Dunne, Auteur ;
Anders Nielsen, Auteur ;
Jane Memmott, Auteur
Conservation practitioners often lack tools to monitor functioning of communities because time and monetary constraints create a gap between the optimal monitoring methods and the practical needs in conservation. Interaction networks provide a f[...]
Article
Bernt-Erik Saether, Auteur ;
Steinar Engen, Auteur ;
John Odden, Auteur ;
John D. C. Linnell, Auteur ;
Vidar Grotan, Auteur ;
Henrik Andren, Auteur
Eurasian lynx in Scandinavia are subject to regular harvest and lethal control to reduce depredation on domestic livestock and semi-domestic reindeer. Here we introduce the use of total reproductive value to model the effects of current harvest [...]
Article
Seth B. Magle, Auteur ;
Perla Reyes, Auteur ;
Jun Zhu, Auteur ;
Kevin R. Crooks, Auteur
Using 5 years of patch occupancy data for 384 habitat fragments, we evaluated population and habitat dynamics of the black-tailed prairie dog in urban habitat remnants in the rapidly developing landscape of Denver, CO, USA. Specifically, we eval[...]
Article
Adison Altamirano, Auteur ;
Richard Field, Auteur ;
Luis Cayuela, Auteur ;
Paul Aplin, Auteur ;
Antonio Lara, Auteur ;
Jose Maria Rey-Benayas, Auteur
Chile has more than half of the temperate forests in the southern hemisphere. These have been included among the most threatened eco-regions in the world, because of the high degree of endemism and presence of monotypic genera. In this study, we[...]
Article
Ricky-John Spencer, Auteur ;
Fredric J. Janzen, Auteur
Understanding how organisms respond to human impacts is increasingly challenging biologists. Short-lived organisms can adapt rapidly to changes in environmental hazards, but only recently have long-lived organisms been shown to adapt to human im[...]
