Search Results - "Gignoux, Jacques"

Determinants of woody cover in African savannas by Sankaran, M, Hanan, N.P, Scholes, R.J, Ratnam, J, Augustine, D.J, Cade, B.S, Gignoux, J, Higgins, S.I, Le Roux, X, Ludwig, F

“…Savannas are globally important ecosystems of great significance to human economies. In these biomes, which are characterized by the co-dominance of trees and…”
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Multispecies allometric equations for shrubs and trees biomass prediction in a Guinean savanna (West Africa) by Kouamé, Yao Anicet Gervais, Millan, Mathieu, N'Dri, Aya Brigitte, Charles-Dominique, Tristan, Konan, Marcel, Bakayoko, Adama, Gignoux, Jacques

“…Currently, tools to predict the aboveground and belowground biomass (AGB and BGB) of woody species in Guinean savannas (and the data to calibrate them) are…”
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Explore less to control more: why and when should plants limit the horizontal exploration of soil by their roots? by de Parseval, Henri, Abbadie, Luc, Barot, Sébastien, Gignoux, Jacques, Lata, Jean-Christophe, Raynaud, Xavier

“…In ecosystems limited by soil nutrients, some plants show a restricted horizontal distribution of their roots. We explored the hypothesis that this particular…”
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The dynamics of hollowing in annually burnt savanna trees and its effect on adult tree mortality by N'Dri, Aya Brigitte, Gignoux, Jacques, Barot, Sébastien, Konaté, Souleymane, Dembélé, Aboubakar, Werner, Patricia A.

“…Savanna trees often display significant hollows due to the combined action of fire and termites (N'Dri et al., J Trop Ecol 27:269–278, 2011). Observations have…”
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Relationships between ramet and genet dynamics in two clonal palms by Kouassi, Kouadio I., Barot, Sébastien, Laossi, Kam-Rigne, Gignoux, Jacques, Zoro Bi, Irié A.

“…•Ramet demography differs between the two rattan species.•Survival of adult and juvenile genets increases with the initial number of ramets.•Genet probability…”
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Demography and life history of two rattan species, Eremospatha macrocarpa and Laccosperma secundiflorum, in Côte d'Ivoire by Kouassi, Kouadio I., Barot, Sébastien, Gignoux, Jacques, Zoro Bi, Irié A.

“…Two rattans species were studied in Côte d'Ivoire using a stage-classified matrix model to compare their demography and life histories. Respectively 854 and…”
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3Worlds, a simulation platform for ecosystem modelling by Gignoux, Jacques, Davies, Ian D., Flint, Shayne R.

“…•We present 3Worlds, a new modelling platform that represents any ecosystem as a dynamic graph.•Ecological meaning of the graph is defined by adding…”
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Trace element concentrations along a gradient of urban pressure in forest and lawn soils of the Paris region (France) by Foti, Ludovic, Dubs, Florence, Gignoux, Jacques, Lata, Jean-Christophe, Lerch, Thomas Z., Mathieu, Jérôme, Nold, François, Nunan, Naoise, Raynaud, Xavier, Abbadie, Luc, Barot, Sébastien

“…The concentration, degree of contamination and pollution of 7 trace elements (TEs) along an urban pressure gradient were measured in 180 lawn and wood soils of…”
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Allocation strategies of savanna and forest tree seedlings in response to fire and shading: outcomes of a field experiment by Gignoux, Jacques, Konaté, Souleymane, Lahoreau, Gaëlle, Le Roux, Xavier, Simioni, Guillaume

“…The forest-savanna ecotone may be very sharp in fire-prone areas. Fire and competition for light play key roles in its maintenance, as forest and savanna tree…”
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Modeling the biomass allocation of tree resprout in a fire-prone savanna by Akpoué, Kouadio Jean-Philippe, Barot, Sébastien, Raynaud, Xavier, Gignoux, Jacques

“…•This paper explores the role of biomass allocation strategies in tree resprouts in a fire prone savanna.•The success of allocation strategies depends on the…”
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Spatial heterogeneity of nitrification contributes to tree–grass coexistence in West African savannas by Konaré, Sarah, Koffi, Kouamé Fulgence, Boudsocq, Simon, Gignoux, Jacques, Lata, Jean‐Christophe, Raynaud, Xavier, Barot, Sébastien

“…In savannas, the coexistence between trees and grasses is determined by complex mechanisms based on water partitioning and disturbances. But little is known…”
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Modelling facilitation or competition within a root system: importance of the overlap of root depletion and accumulation zones by de Parseval, Henri, Barot, Sébastien, Gignoux, Jacques, Lata, Jean-Christophe, Raynaud, Xavier

“…Aims The concept of intra-plant, inter-root competition considers the overlap of nutrient depletion zones around roots, but neglects the spatial pattern of…”
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Spatial heterogeneity in nitrification and soil exploration by trees favour source–sink dynamics in a humid savanna: A modelling approach by Konaré, Sarah, Boudsocq, Simon, Gignoux, Jacques, Lata, Jean‐Christophe, Raynaud, Xavier, Barot, Sébastien, Field, Katie

“…Savannas are structured ecosystems characterized by a grass layer interspersed with trees. Trees strongly modify their local environment and favour nutrient…”
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Establishment and early persistence of tree seedlings in an annually burned savanna by Gignoux, Jacques, Lahoreau, Gaëlle, Julliard, Romain, Barot, Sébastien

“…1. In severely disturbed habitats, the onset of resprouting as a persistence strategy might be problematic for tree species which do not accumulate sufficient…”
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Effects of Mineral Nitrogen Partitioning on Tree–Grass Coexistence in West African Savannas by Konaré, Sarah, Boudsocq, Simon, Gignoux, Jacques, Lata, Jean-Christophe, Raynaud, Xavier, Barot, Sébastien

“…Coexistence between trees and grasses in savannas is generally assumed to be due to a combination of partial niche separation for water acquisition and…”
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Spatial patterns of a savanna palm tree Borassus aethiopum and its temporal variability by Traoré, Amara Sidiki, Kouassi, Kouadio Ignace, Koné, Moussa, Gignoux, Jacques, Barot, Sébastien

“…The spatial distributions and associations of plant species in a stand can provide essential information about their dynamics. However, since tree spatial…”
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Emergence and complex systems: The contribution of dynamic graph theory by Gignoux, Jacques, Chérel, Guillaume, Davies, Ian D., Flint, Shayne R., Lateltin, Eric

“…[Display omitted] •All hierarchical systems can be represented by a mathematical graph.•We build a consistent set of definitions related to hierarchical…”
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Mechanisms promoting plant coexistence: can all the proposed processes be reconciled? by Barot, Sébastien

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Season affects fire behavior in annually burned humid savanna of West Africa by N’Dri, Aya Brigitte, Soro, Tionhonkélé Drissa, Gignoux, Jacques, Dosso, Kanvaly, Koné, Mouhamadou, N’Dri, Julien Kouadio, Koné, N’golo Abdoulaye, Barot, Sébastien

“…Background Fire is important for the maintenance of African savanna ecosystems, particularly humid savanna. Despite the importance of fire behavior to our…”
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Topsoil characteristics of forests and lawns along an urban–rural gradient in the Paris region (France) by Foti, Ludovic, Barot, Sébastien, Gignoux, Jacques, Grimaldi, Michel, Lata, Jean‐Christophe, Lerch, Thomas Z., Nold, François, Nunan, Naoise, Raynaud, Xavier, Abbadie, Luc, Dubs, Florence

“…Urban soils are a crucial component of urban ecosystems, especially in public green spaces, because of the ecosystem services they provide (e.g. public…”
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