Michael Hoffmann, Craig Hilton‐Taylor, Ariadne Angulo, Monika Böhm et al.
Assessing Biodiversity Declines Understanding human impact on biodiversity depends on sound quantitative projection. Pereira et al. (p. 1496 , published online 26 October) review quantitative scenarios that have been developed for four main areas of concern: species extinctions, species abundances a...
Philip J. Seddon, Pritpal S. Soorae, Frédéric Launay
Taxonomic bias has been documented in general science and conservation research publications. We examined whether taxonomic bias is similarly severe in actual conservation programmes as indicated by the focus of species reintroduction projects worldwide. We compiled a database of reintroduction proj...
Shaikh Jamal Uddin, Kakoli Rani Mondal, Jamil A. Shilpi, M.T. Rahman
The methanol extract of Cyperus rotundus rhizome, given orally at the doses of 250 and 500 mg/kg b.w., showed significant antidiarrhoeal activity in castor oil induced diarrhoea in mice. Among the fractions, tested at 250 mg/kg, the petroleum ether fraction (PEF) and residual methanol fraction (RMF)...
Jüergen Kreyling, Jürgen Dengler, Julia Walter, Nikolay Velev et al.
Biodiversity can buffer ecosystem functioning against extreme climatic events, but few experiments have explicitly tested this. Here, we present the first multisite biodiversity × drought manipulation experiment to examine drought resistance and recovery at five temperate and Mediterranean grassland...
Jüergen Kreyling, Kerstin Grant, Verena Hammerl, Mohammed Abu Sayed Arfin Khan et al.
Climate change affects all seasons, but warming is more pronounced in winter than summer at mid- and high latitudes. Winter warming can have profound ecological effects, which are rarely compared to the effects of summer warming, and causal explanations are not well established. We compared mild abo...
Andrea Wilson, Mark R. Stanley Price
Khan Towhid Osman
Physical properties of soil include color, texture, structure, porosity, density, consistence, temperature, and air. Colors of soils vary widely and indicate such important properties as organic matter, water, and redox conditions. Soil texture, structure, porosity, density, and consistence are rela...
E.J. Milner‐Gulland, E. Kreuzberg-Mukhina, Ben Grebot, S. Ling et al.
We assessed the threatened status of 163 Central Asian vertebrates using the IUCN Red List Criteria (Version 3.1) at the national and regional levels, and compared these assessments to the global assessments given in the IUCN 2002 Red List. We thus compared threat status at three spatial scales; nat...
Dana J. Morin, John Boulanger, Richard Bischof, David C. Lee et al.
Populations of bears in Asia are vulnerable to extinction and effective monitoring is critical to measure and direct conservation efforts. Population abundance (local density) or growth (λ) are the most sensitive metrics to change. We discuss the value in implementing spatially explicit capture-reca...
Oliver Keuling, Tomasz Podgórski, Andrea Monaco, Mario Melletti et al.
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Shekhar R. Biswas, Azim U. Mallik, Nicholas T. Braithwaite, Prity L. Biswas
Spatial heterogeneity in site conditions and differing disturbance types are common features of natural landscapes. We asked: does the relationship between species diversity and functional trait diversity (SD-FD relationship) of plant communities vary among habitats experiencing different types of d...
Philip E. Hulme, Aníbal Pauchard, Petr Pyšek, Montserrat Vilà et al.
Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans the biological, physical, and social sciences.
Jorgelina Franzese, Luciana Ghermandi, Donaldo Bran
Abstract Question: (1) Which factors regulate post‐fire recruitment and spread of the shrub Senecio bracteolatus in Patagonian grasslands? (2) What is the role of the grass Stipa speciosa on S. bracteolatus establishment in the post‐fire succession? Location: Northwest Patagonia, Argentina. Methods:...
Clayton T. Lamb, Sara H. Williams, Stan Boutin, M W Bridger et al.
Habitat loss is affecting many species, including the southern mountain caribou (Rangifer tarandus caribou) population in western North America. Over the last half century, this threatened caribou population's range and abundance have dramatically contracted. An integrated population model was used ...
John R. Weir, John Derek Scasta
Fire is the most effective tool for managing Juniperus virginiana encroachment and associated fire risk, but its application has been limited. In a laboratory experiment we assessed a critical knowledge gap: how fire temperature and live fuel moisture (LFM) influences ignitability, sustainability, c...