Concept

Richesse spécifique

Publications associées (134)

Vegetation-environment relationships in alpine mires of the West Carpathians and the Alps

QuestionsHow do two distant mountain ranges differ in their vegetation-environment relationships, overall species composition and its variability and species richness of vascular plants and bryophytes in alpine fens and bogs? Is the floristic difference co ...

Wiley-Blackwell2013

Seasonal patterns of testate amoeba diversity, community structure and species-environment relationships in four Sphagnum-dominated peatlands along a 1300 m altitudinal gradient in Switzerland

Alexandre Buttler, Edward Mitchell, Luca Bragazza, Vincent Eric Jules Jassey, Mariusz Lamentowicz

Altitudinal gradients are useful to study the potential effects of climate change on ecosystems. Historically, studies on elevation gradients have primarily focused on macro-organisms and ecosystem processes, while microorganisms have been mostly ignored d ...

Pergamon-Elsevier Science Ltd2013

Is Y-2(B12H12)(3) the main intermediate in the decomposition process of Y(BH4)(3)?

Dodecaborates, i.e. the [B12H12]2- containing species, are often observed as main intermediates in the hydrogen sorption cycle of metal borohydrides, hindering rehydrogenation. In the decomposition process of Y(BH4)3, yttrium octahydrotriborate, i.e. Y(B3H ...

2013

Headwaters are critical reservoirs of microbial diversity for fluvial networks

Tom Ian Battin, Enrico Bertuzzo

Streams and rivers form conspicuous networks on the Earth and are among nature's most effective integrators. Their dendritic structure reaches into the terrestrial landscape and accumulates water and sediment en route from abundant headwater streams to a s ...

Royal Soc2013

Critical issues in using the common mixture toxicity models concentration addition or response addition on species sensitivity distributions: A theoretical approach

Vincent Gregorio

The risk of chemical mixtures to ecosystems is often assessed by applying the model of concentration addition or response addition combined with species sensitivity distribution (SSD) curves. Mixture effect predictions have been shown to be consistent only ...

Society of Environmental Toxicology and Chemistry Press2013

Arbuscular mycorrhizal fungi reduce the differences in competitiveness between dominant and subordinate plant species

Alexandre Buttler, Pierre Rémi Mariotte, Thomas Spiegelberger, Aurélie Thébault, Claire Meugnier

In grassland communities, plants can be classified as dominants or subordinates according to their relative abundances, but the factors controlling such distributions remain unclear. Here, we test whether the presence of the arbuscular mycorrhizal (AM) fun ...

Springer-Verlag2013

Mathematical analysis and numerical simulation of pattern formation under cross-diffusion

Ricardo Esteban Ruiz Baier

Cross-diffusion driven instabilities have gained a considerable attention in the field of population dynamics, mainly due to their ability to predict some important features in the study of spatial distribution of species in ecological systems. This paper ...

Pergamon-Elsevier Science Ltd2013

Signs of critical transition in the Everglades wetlands in response to climate and anthropogenic changes

Andrea Rinaldo

The increasing pressure of climatic change and anthropogenic activities is predicted to have major effects on ecosystems around the world. With their fragility and sensitivity to hydrologic shifts and land-use changes, wetlands are among the most vulnerabl ...

National Academy of Sciences2013

How do subordinate and dominant species in semi-natural mountain grasslands relate to productivity and land-use change?

Alexandre Buttler, Pierre Rémi Mariotte, Thomas Spiegelberger

Changes in agricultural practices of semi-natural mountain grasslands are expected to modify plant community structure and shift dominance patterns. Using vegetation surveys of 11 sites in semi-natural grasslands of the Swiss Jura and Swiss and French Alps ...

Elsevier Gmbh, Urban & Fischer Verlag2013

Crystal Structure and Solution Species of Ce(III) and Ce(IV) Formates: From Mononuclear to Hexanuclear Complexes

Philip Pattison, Stephan Weiss

Cerium(III) and cerium(IV) both form formate complexes. However, the species in aqueous solution and the solid-state structures are surprisingly different. Ce(III) shows only mononuclear complexes in aqueous solution, whereas Ce(IV) forms a stable hexanucl ...

2013

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