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Source : Irstea

Temporal dynamics of restored communities in ecological engineering works

Jaunatre, R. et al. (2014)

Among the numerous applications of ecological engineering are the creation of engineering structures made of living materials, of which objective is to perform a function (for instance, water purification or erosion mitigation). One distinctive characteristic of these living materials is that they ...

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Source : Irstea

Surface soil moisture retrieval over a Mediterranean semi-arid region using X-band SAR data from TerraSAR-X sensor

Gorrab, A. et al. (2015)

We propose in this study, an approach based on the change detection method for the retrieval of surface soil moisture at a higher spatial resolution. The proposal algorithm combines multi-temporal X-band SAR images (TerraSAR-X) with different continuous thetaprobe measurements. More than five ...

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Source : Irstea

Programme national de conservation des ressources génétiques des ormes : note sur le bouturage herbacé de l'orme

Collin, E. (1996)

The present note is destined to numerous people interested in the genetic conservation of elms and curious to know the cutting method employed by the Cemagref to build up the national protection collection of clones implanted at Nogent/Vernisson (45) and Guemene-Penfao (44). / La présente note est ...

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Source : Irstea

Sampling saproxylic beetles with window flight traps: methodological insights

Bouget, C. et al. (2008)

Saproxylic beetles are species-rich, mostly small and cryptic, and difficult to sample. Different methods are traditionally used to collect saproxylic beetles. These are (i) direct active collection techniques, (ii) rearing techniques and (iii) mass trapping methods. Window-flight trapping is ...

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Source : Irstea

Usages probatoire et exploratoire de l'entretien unique : éléments de discussion à partir de l'étude de deux travaux de sociologie des sciences

Ragouet, P. (2000)

This paper reflects on the possible uses of the single interview, using two examples for illustration. We have identified two such uses. The first, probative in nature, consists in using the interview as an instrument to corroborate hypotheses; This use is tied to a denaturing of the social reality ...

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Source : Irstea

Erosion control on forest soils with vegetation, under global change

Vennetier, M. et al. (2014)

Erosion is a risk for soil fertility but foresters usually prevent it with adapted management practices. Ecological restoration in mountain lands was a great success in the last two centuries. Thanks to the past experience and continuous research until now, a complete outfit of methods and species ...

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Source : Irstea

Des inégalités garantes de la protection des Calanques ? Un parc national dans l’agglomération marseillaise

Deldrève, V. et al. (2012)

The future National park of creeks, near an urban area of about two million inhabitants, is cause for numerous stakes connected to the nearness of the city. These issues are discussed in both arenas established by the Public Interest Grouping , and in those more spontaneous leaded by action groups ...

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Source : Irstea

Le CTE : un bilan en demi-teintes révélateur des tensions de l`agriculture française ?

Léger, F. et al. (2004)

From 1999 to 2002, the CTE has been the main way for the enforcement of European rural development policy in France. It was brought up as a tool for "territorialization" of the public action and enhancement of multifonctionnality of agriculture, conditions of a sustainable development. The mid-term ...

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Source : Irstea

Comment raisonner les trames forestières et prairiales pour la conservation des papillons de jours ?

Lorel, C. (2015)

Anthropogenic uses impact landscape composition and cause habitat fragmentation. Landscape connectivity of semi-natural habitats contributes to biodiversity conservation. Butterflies and day-active moths are a good model group to test landscape effects: they are among the most declining groups of ...

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Source : Irstea

Les acteurs entre logiques fonctionnelles et logiques spatiales

Perret, J. (1995)

Tackling environmental issues in terms of territorial reconstitution, raises the question of actors' logics which underlie the policies and practices set up on a given space. In the current debate on environment, the farmer is apparently at the heart of the problem. In fact the environmental ...

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