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Documents disponibles dans cette catégorie (3190)
Communication à un Congrès (avec Actes)
J.L. Rubio | Zaragoza [Espagne] : CIHEAM-IAMZ | Options Méditerranéennes : Série A. Séminaires Méditerranéens, ISSN 0253-1542 | 1989In Mediterranean conditions hydric soil erosion is the most dangerous threat of soil degradation. The erosion processes have widespread consequences in the ecological values of the land and also strong implications in the agricultural and forest[...]Communication à un Congrès (avec Actes)
M.T. Sebastià ; E. Gutiérrez | Zaragoza [Espagne] : CIHEAM-IAMZ | Options Méditerranéennes : Série A. Séminaires Méditerranéens, ISSN 0253-1542 | 1989Some characteristics of the vascular flora of the forest region in the Argentinean part of Tierra de Fuego are analysed. The discussion is done in terms of its adaptive significance in relation to climatic and general edaphic conditions, the typ[...]Communication à un Congrès (avec Actes)
A. Puerto ; J.A. Garcia ; M.D. Matias ; A. Saldaña ; C. Pérez | Zaragoza [Espagne] : CIHEAM-IAMZ | Options Méditerranéennes : Série A. Séminaires Méditerranéens, ISSN 0253-1542 | 1989The aim of the present work is to offer new data for discussion on the structural characters induced by the tree covering in grassland communities. Particular emphasis is given to the heterogeneity caused by the location (canopy understory, cano[...]Communication à un Congrès (avec Actes)
F. Gonzalez Bernaldez ; C. Montes | Zaragoza [Espagne] : CIHEAM-IAMZ | Options Méditerranéennes : Série A. Séminaires Méditerranéens, ISSN 0253-1542 | 1989Protected areas cannot be unlimited, being thus necessary to rationalise their constitution. For a long time nature conservation was based on the protection of outstanding endangered species. Later on, the interest expanded to the remaining orga[...]Communication à un Congrès (avec Actes)
M. Rico | Zaragoza [Espagne] : CIHEAM-IAMZ | Options Méditerranéennes : Série A. Séminaires Méditerranéens, ISSN 0253-1542 | 1989A study is made of aspects related to the structure of grassland communities occupying contrasted positions on slopes. Thirty slopes were chosen in the dehesa zone of the province of Salamanca (Spain); in each, the communities occupying the most[...]Communication à un Congrès (avec Actes)
F. Sigala ; J.-C. Fies ; R. Guennelon | Bari [Italie] : CIHEAM-IAMB | Options Méditerranéennes : Série A. Séminaires Méditerranéens, ISSN 0253-1542 | 1989This paper presents useful tests for studying the stability of aggregates, clumps and clump-clusters, related to dispersive water action. Sodic aggregates are not as strong as non-sodic ones, but for both materials the resistance against breakin[...]Communication à un Congrès (avec Actes)
S. El Guindy ; G.A. El Nasser ; A. Abu Bakr ; L. El Sissi | Bari [Italie] : CIHEAM-IAMB | Options Méditerranéennes : Série A. Séminaires Méditerranéens, ISSN 0253-1542 | 1989To carry out this study, an experimental area of 2.5 fedd. was established in Fayoum Governorate (Egypt) where drainage, mixed and fresh water have been used for irrigation of common crops in the Fayoum area. Data concerning soil and crops were [...]Communication à un Congrès (avec Actes)
A. Arar | Bari [Italie] : CIHEAM-IAMB | Options Méditerranéennes : Série A. Séminaires Méditerranéens, ISSN 0253-1542 | 1989Increasing the conventional water supplies by non-conventional water development techniques has been applied in the Near East, and is gaining wider support. However, it has been limited in application and only recently plans have been formulated[...]Communication à un Congrès (avec Actes)
G. Colombo | Bari [Italie] : CIHEAM-IAMB | Options Méditerranéennes : Série A. Séminaires Méditerranéens, ISSN 0253-1542 | 1989The future development of Egyptian farming mostly depends on the expansion of farming activities, closely related to the availability of larger amounts of irrigation water. This increased availability will result from a better use of underground[...]Ouvrage
Thèse, Mémoire, Master
Article
Thèse, Mémoire, Master
I. Escobar | 1988Actes de Congrès ou Communication isolée
Rapport, Expertise, Working Paper
Actes de Congrès ou Communication isolée
Actes de Congrès ou Communication isolée
Thèse, Mémoire, Master
K. Aiachi | 1987L'eau est une ressource naturelle rare en Tunisie. Les pouvoirs publics ont choisi de privilégier la consommation urbaine par rapport à la consommation rurale et de favoriser le littoral. Ce choix s'inscrit dans une stratégie de développement gl[...]Ouvrage
Chapitre d'ouvrage
Ouvrage
Ouvrage
Actes de Congrès ou Communication isolée
Article
Chapitre d'ouvrage
Ouvrage
Actes de Congrès ou Communication isolée
S. Lafleuriel Zakri | 1987Chapitre d'ouvrage
Ouvrage