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Options Méditerranéennes : Série A. Séminaires Méditerranéens
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0253-1542
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Documents disponibles dans la collection (198)
Communication à un Congrès (avec Actes)
M.D. Matias ; J.A. Garcia ; A. Puerto ; J.A. Saldaña | Zaragoza [Espagne] : CIHEAM-IAMZ | Options Méditerranéennes : Série A. Séminaires Méditerranéens, ISSN 0253-1542 | 1989A study is made of secondary succession following abandonment of cultivation on hillside terraces. The ordering analyses of the shrub species reveal a superposition of bioclimatic effects and those due to the impact of human activity, with a pre[...]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)
M. Molinas ; A. Caritat | Zaragoza [Espagne] : CIHEAM-IAMZ | Options Méditerranéennes : Série A. Séminaires Méditerranéens, ISSN 0253-1542 | 1989The mechanisms that control the development of a particular tree architecture are for the most part poorly understood. This report describes the methodology and the preliminary results of the study of longitudinal growth in the cork tree. Measur[...]Communication à un Congrès (avec Actes)
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)
M.T. Aguinaco ; J. Bellot ; M. Serrano | Zaragoza [Espagne] : CIHEAM-IAMZ | Options Méditerranéennes : Série A. Séminaires Méditerranéens, ISSN 0253-1542 | 1989Distribution on aquatic macrophytes has been studied down the drainage channel, in the irrigated area of La Violada (Huesca, Spain). In the affinity analysis we detect two groups of macrophytes: the helophytes and the limnophytes. Data on chemic[...]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)
J. Kummerow | Zaragoza [Espagne] : CIHEAM-IAMZ | Options Méditerranéennes : Série A. Séminaires Méditerranéens, ISSN 0253-1542 | 1989The purpose of this contribution is to discuss the adaptive value of a few morphological characteristics of shrubs of Mediterranean-type ecosystems. Structural characters, such as the crypts in the leaf epidermis of some sclerophyllous shrub spe[...]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)
D. Rosich ; A. Castelló ; V.R. Vallejo | Zaragoza [Espagne] : CIHEAM-IAMZ | Options Méditerranéennes : Série A. Séminaires Méditerranéens, ISSN 0253-1542 | 1989The input and decomposition of litter, and the C/N ratio evolution was studied for 2 years in evergreen oak forests in the Catalonian Central Basin. The decay constant, k, obtained was 0.365. The C/N ratio had a sharp decrease in the initial 7 m[...]Communication à un Congrès (avec Actes)
J. Canadell ; F. Roda | Zaragoza [Espagne] : CIHEAM-IAMZ | Options Méditerranéennes : Série A. Séminaires Méditerranéens, ISSN 0253-1542 | 1989Root systems from 36 holm oak (Quercus ilex L.) trees were excavated, at La Castanya, Biological Station, Montseny. Allometric equations were developed to estimate below ground biomass at an experimental plot. Because of fine root losses during [...]Communication à un Congrès (avec Actes)
R. Génova | Zaragoza [Espagne] : CIHEAM-IAMZ | Options Méditerranéennes : Série A. Séminaires Méditerranéens, ISSN 0253-1542 | 1989The degree of synchronisation between nine different chronologies located in three different zones of the Iberian Peninsula has been analysed. All the values obtained for both statistical tests used were significant. The average for the test of [...]Communication à un Congrès (avec Actes)
R.T. Wilson | Zaragoza [Espagne] : CIHEAM-IAMZ | Options Méditerranéennes : Série A. Séminaires Méditerranéens, ISSN 0253-1542 | 1989The anatomy and physiology of the dromedary digestive tract present certain particularities with respect to the typical ruminant. The stomach has only 3 compartment, the first one having a very different motility from that of a ruminant. The dro[...]Communication à un Congrès (avec Actes)
R.T. Wilson | Zaragoza [Espagne] : CIHEAM-IAMZ | Options Méditerranéennes : Série A. Séminaires Méditerranéens, ISSN 0253-1542 | 1989Camelidae do not occupy a very important position in world livestock and nevertheless, their contribution to the well-being of the people in the regions where they are found is capital. There are some 15.5 million camels and dromedaries in the w[...]Communication à un Congrès (avec Actes)
P. Garcia Manteca ; Y. González ; M.A. Alvarez ; J. Marquez ; J.A. Fernández Prieto | Zaragoza [Espagne] : CIHEAM-IAMZ | Options Méditerranéennes : Série A. Séminaires Méditerranéens, ISSN 0253-1542 | 1989A vegetation map was prepared using 32 different types of vegetation elements as part of an environmental study of Somiedo area (Asturias). This information was digitised in one hectare elements to incorporate it in a territorial database. This [...]Communication à un Congrès (avec Actes)
A. Pastor ; J. Martin | Zaragoza [Espagne] : CIHEAM-IAMZ | Options Méditerranéennes : Série A. Séminaires Méditerranéens, ISSN 0253-1542 | 1989This paper deals with Pinus halepensis plantations in Alicante's province. The particular orographic and geographic situation of this area lead to a large climatic variability from subhumid to arid with different thermic regimes. The mean yearly[...]Communication à un Congrès (avec Actes)
M.F.A. Farid | Zaragoza [Espagne] : CIHEAM-IAMZ | Options Méditerranéennes : Série A. Séminaires Méditerranéens, ISSN 0253-1542 | 1989Water, heat and the associated salt problems can be detrimental to survival of desert animals. In this respect, the dromedary camel has always been legendary for its tolerance and adaptation to conditions of physiological and nutritional stress.[...]Communication à un Congrès (avec Actes)
M.J. Lledó ; J. Piñol | Zaragoza [Espagne] : CIHEAM-IAMZ | Options Méditerranéennes : Série A. Séminaires Méditerranéens, ISSN 0253-1542 | 1989Here is the hydrological record (rainfall and streamflow) of two impervious watersheds paired and covered by a dense Quercus ilex forest. They are located in the Serra de Prades (Tarragona, Spain) where the climate is typically Mediterranean. Th[...]