| publications-711 |
PEER REVIEWED ARTICLE |
2012 |
Francesco de Bello , Sandra Lavorel , Sébastien Lavergne , Cécile H. Albert , Isabelle Boulangeat , Florent Mazel , Wilfried Thuiller |
Hierarchical effects of environmental filters on the functional structure of plant communities: a case study in the French Alps |
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10.1111/j.1600-0587.2012.07438.x |
Simulation & Modeling |
Uncategorized |
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Understanding the influence of the environment on the functional structure of ecological communities is essential to predict the response of biodiversity to global change drivers. Ecological theory suggests that multiple environmental factors shape local species assemblages by progressively filtering species from the regional species pool to local communities. These successive filters should influence the various components of community functional structure in different ways. In this paper, we tested the relative influence of multiple environmental filters on various metrics of plant functional trait structure (i.e. âcommunity weighted mean traitâ and components of functional trait diversity, i.e. functional richness, evenness and divergence) in 82 vegetation plots in the Guisane Valley, French Alps. For the 211 sampled species we measured traits known to capture key aspects of ecological strategies amongst vascular plant species, i.e. leaf traits, plant height and seed mass (LHS). A comprehensive information theory framework, together with null model based resampling techniques, was used to test the various environmental effects. Particular community components of functional structure responded differently to various environmental gradients, especially concerning the spatial scale at which the environmental factors seem to operate. Environmental factors acting at a large spatial scale (e.g. temperature) were found to predominantly shape community weighted mean trait values, while fineâscale factors (topography and soil characteristics) mostly influenced functional diversity and the distribution of trait values among the dominant species. Our results emphasize the hierarchical nature of ecological forces shaping local species assemblage: largeâscale environmental filters having a primary effect, i.e. selecting the pool of species adapted to a site, and then filters at finer scales determining species abundances and local species coexistence. This suggests that different components of functional community structure will respond differently to environmental change, so that predicting plant community responses will require a hierarchical multiâfacet approach. |
272284 |
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| publications-712 |
PEER REVIEWED ARTICLE |
2013 |
J. Roy , C. H. Albert , S. Ibanez , P. Saccone , L. Zinger , P. Choler , J.-C. Clément , S. Lavergne , R. A. Geremia |
Microbes on the Cliff: Alpine Cushion Plants Structure Bacterial and Fungal Communities |
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10.3389/fmicb.2013.00064 |
Simulation & Modeling |
Uncategorized |
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No abstract available |
272284 |
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| publications-713 |
PEER REVIEWED ARTICLE |
2014 |
Massimo Rolle , Peter K. Kitanidis |
Effects of compound-specific dilution on transient transport and solute breakthrough: A pore-scale analysis |
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10.1016/j.advwatres.2014.06.012 |
Control Systems |
Uncategorized |
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No abstract available |
273049 |
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| publications-714 |
PEER REVIEWED ARTICLE |
2013 |
Massimo Rolle , Gabriele Chiogna , David L. Hochstetler , Peter K. Kitanidis |
On the importance of diffusion and compound-specific mixing for groundwater transport: An investigation from pore to field scale |
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10.1016/j.jconhyd.2013.07.006 |
Simulation & Modeling |
Uncategorized |
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No abstract available |
273049 |
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| publications-715 |
PEER REVIEWED ARTICLE |
2013 |
Massimo Rolle , Muhammad Muniruzzaman , Christina M. Haberer , Peter Grathwohl |
Coulombic effects in advection-dominated transport of electrolytes in porous media: Multicomponent ionic dispersion |
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10.1016/j.gca.2013.06.031 |
IoT & Sensors |
Uncategorized |
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No abstract available |
273049 |
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| publications-716 |
PEER REVIEWED ARTICLE |
2012 |
Massimo Rolle , David Hochstetler , Gabriele Chiogna , Peter K. Kitanidis , Peter Grathwohl |
Experimental Investigation and Pore-Scale Modeling Interpretation of Compound-Specific Transverse Dispersion in Porous Media |
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10.1007/s11242-012-9953-8 |
Simulation & Modeling |
Uncategorized |
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No abstract available |
273049 |
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| publications-717 |
PEER REVIEWED ARTICLE |
2013 |
David L. Hochstetler , Massimo Rolle , Gabriele Chiogna , Christina M. Haberer , Peter Grathwohl , Peter K. Kitanidis |
Effects of compound-specific transverse mixing on steady-state reactive plumes: Insights from pore-scale simulations and Darcy-scale experiments |
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10.1016/j.advwatres.2012.12.007 |
AI & Machine Learning |
Uncategorized |
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No abstract available |
273049 |
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| publications-718 |
PEER REVIEWED ARTICLE |
2012 |
Gabriele Chiogna , David L. Hochstetler , Alberto Bellin , Peter K. Kitanidis , Massimo Rolle |
Mixing, entropy and reactive solute transport |
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10.1029/2012gl053295 |
IoT & Sensors |
Uncategorized |
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Mixing processes significantly affect reactive solute transport in fluids. For example, contaminant degradation in environmental aquatic systems can be limited either by the availability of one or more reactants, brought into contact by physical mixing, or by the kinetics of the (bio)chemical transformations. Appropriate metrics are needed to accurately quantify the interplay between mixing and reactive processes. The exponential of the Shannon entropy of the concentration probability distribution has been proposed and applied to quantify the dilution of conservative solutes either in a given volume (dilution index) or in a given water flux (fluxârelated dilution index). In this work we derive the transport equation for the entropy of a reactive solute. Adopting a fluxârelated framework, we show that the degree of uniformity of the solute mass flux distribution for a reactive species and its rate of change are informative measures of physical and (bio)chemical processes and their complex interaction. |
273049 |
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| publications-719 |
PEER REVIEWED ARTICLE |
2014 |
Muhammad Muniruzzaman , Christina M. Haberer , Peter Grathwohl , Massimo Rolle |
Multicomponent ionic dispersion during transport of electrolytes in heterogeneous porous media: Experiments and model-based interpretation |
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10.1016/j.gca.2014.06.020 |
IoT & Sensors |
Uncategorized |
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No abstract available |
273049 |
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| publications-720 |
PEER REVIEWED ARTICLE |
2014 |
Biao Jin , Massimo Rolle , Ting Li , Stefan B. Haderlein |
Diffusive Fractionation of BTEX and Chlorinated Ethenes in Aqueous Solution: Quantification of Spatial Isotope Gradients |
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10.1021/es4046956 |
IoT & Sensors |
Uncategorized |
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No abstract available |
273049 |
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