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Sébastien Barot

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Papers

A 64 year study of gully extension and woody plant encroachment in a subhumid grassland of South Africa (first part)

by Nicolas Florsch and Sébastien Barot

... 2), Nicolas Florsch (3), Jean-Louis Janeau (1), David Ward (4), Sébastien Barot (5), Pascal P... more

A tale of four stories: soil ecology, theory, evolution and the publication system

PloS one, 2007

Soil ecology has produced a huge corpus of results on relations between soil organisms, ecosystem... more Soil ecology has produced a huge corpus of results on relations between soil organisms, ecosystem processes controlled by these organisms and links between belowground and aboveground processes. However, some soil scientists think that soil ecology is short of modelling and evolutionary approaches and has developed too independently from general ecology. We have tested quantitatively these hypotheses through a bibliographic study (about 23000 articles) comparing soil ecology journals, generalist ecology journals, evolutionary ecology journals and theoretical ecology journals. We have shown that soil ecology is not well represented in generalist ecology journals and that soil ecologists poorly use modelling and evolutionary approaches. Moreover, the articles published by a typical soil ecology journal (Soil Biology and Biochemistry) are cited by and cite low percentages of articles published in generalist ecology journals, evolutionary ecology journals and theoretical ecology journal...

How do sessile dioecious species cope with their males?

Theoretical population biology, 2004

In terrestrial plants the segregation of male and female reproductions on different individuals r... more In terrestrial plants the segregation of male and female reproductions on different individuals results in the seed-shadow handicap: males do not disperse any seed so that the number of local patches reached by seeds is potentially reduced in dioecious populations in comparison to hermaphrodite populations. An analytical model, incorporating a lottery-based recruitment and dispersal stochasticity, was built. The spatially mediated cost of the seed-shadow handicap has been assessed considering the criterions for the invasion of a resident hermaphrodite species by a dioecious species and the reverse invasion, both species having the same demographic parameters but assuming a likely higher fecundity for dioecious females. The reciprocal invasion of a dioecious and hermaphrodite species differing only by their fecundity is never possible. The seed-shadow handicap disappears when the dispersal or survival rate is high enough. This latter point is due to dispersal stochasticity, which all...

Archives pour la catégorie Regards

Copyright by the Cambridge University Press

Archives mensuelles: février 2012

Archives quotidiennes

Edisp: résultats d'un projet ANR sur la dispersion et le maintien de la biodiversité des vers de terre en agroécosystèmes

Contrasting impacts of grass species on nitrogen cycling in a grazed Sudanian savanna 2

Reaction norms for age and size at maturation: study of the long-term trend (1970-1998) for Georges Bank and Gulf of Maine Atlantic cod stocks

A model of C and N cycling where the plant-soil synchrony functions as a symphony

The dynamics of hollowing in annually burnt savanna trees and its effect on adult tree mortality

25 Years of Research on Biological Nitrification Inhibition (BNI) by Grass and Trees from the Rhizosphere to Landscape in Savannas of West Africa

The interactions between soil type and earthworm species determine the properties of earthworm casts

Soil clay influences Acacia encroachment in a South African grassland

Impact of soil engineering by two contrasting species of earthworms on their dispersal rates

Earthworm services for cropping systems. A review

Cambios en las comunidades de plantas influenciados por la macroagregación del suelo a través de las actividades de la macrofauna del suelo en la Amazonía Brasileira

Nitrogen as a threat to European soil quality-Chapter 21

Pesticides and earthworms. A review

A 64 year study of gully extension and woody plant encroachment in a subhumid grassland of South Africa (first part)

by Nicolas Florsch and Sébastien Barot

... 2), Nicolas Florsch (3), Jean-Louis Janeau (1), David Ward (4), Sébastien Barot (5), Pascal P... more

A tale of four stories: soil ecology, theory, evolution and the publication system

PloS one, 2007

Soil ecology has produced a huge corpus of results on relations between soil organisms, ecosystem... more Soil ecology has produced a huge corpus of results on relations between soil organisms, ecosystem processes controlled by these organisms and links between belowground and aboveground processes. However, some soil scientists think that soil ecology is short of modelling and evolutionary approaches and has developed too independently from general ecology. We have tested quantitatively these hypotheses through a bibliographic study (about 23000 articles) comparing soil ecology journals, generalist ecology journals, evolutionary ecology journals and theoretical ecology journals. We have shown that soil ecology is not well represented in generalist ecology journals and that soil ecologists poorly use modelling and evolutionary approaches. Moreover, the articles published by a typical soil ecology journal (Soil Biology and Biochemistry) are cited by and cite low percentages of articles published in generalist ecology journals, evolutionary ecology journals and theoretical ecology journal...

How do sessile dioecious species cope with their males?

Theoretical population biology, 2004

In terrestrial plants the segregation of male and female reproductions on different individuals r... more In terrestrial plants the segregation of male and female reproductions on different individuals results in the seed-shadow handicap: males do not disperse any seed so that the number of local patches reached by seeds is potentially reduced in dioecious populations in comparison to hermaphrodite populations. An analytical model, incorporating a lottery-based recruitment and dispersal stochasticity, was built. The spatially mediated cost of the seed-shadow handicap has been assessed considering the criterions for the invasion of a resident hermaphrodite species by a dioecious species and the reverse invasion, both species having the same demographic parameters but assuming a likely higher fecundity for dioecious females. The reciprocal invasion of a dioecious and hermaphrodite species differing only by their fecundity is never possible. The seed-shadow handicap disappears when the dispersal or survival rate is high enough. This latter point is due to dispersal stochasticity, which all...

Archives pour la catégorie Regards

Copyright by the Cambridge University Press

Archives mensuelles: février 2012

Archives quotidiennes

Edisp: résultats d'un projet ANR sur la dispersion et le maintien de la biodiversité des vers de terre en agroécosystèmes

Contrasting impacts of grass species on nitrogen cycling in a grazed Sudanian savanna 2

Reaction norms for age and size at maturation: study of the long-term trend (1970-1998) for Georges Bank and Gulf of Maine Atlantic cod stocks

A model of C and N cycling where the plant-soil synchrony functions as a symphony

The dynamics of hollowing in annually burnt savanna trees and its effect on adult tree mortality

25 Years of Research on Biological Nitrification Inhibition (BNI) by Grass and Trees from the Rhizosphere to Landscape in Savannas of West Africa

The interactions between soil type and earthworm species determine the properties of earthworm casts

Soil clay influences Acacia encroachment in a South African grassland

Impact of soil engineering by two contrasting species of earthworms on their dispersal rates

Earthworm services for cropping systems. A review

Cambios en las comunidades de plantas influenciados por la macroagregación del suelo a través de las actividades de la macrofauna del suelo en la Amazonía Brasileira

Nitrogen as a threat to European soil quality-Chapter 21

Pesticides and earthworms. A review