Search results for "Cistus albidus"
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Flowering and fruiting phenology and breeding system ofCistus albidusL.
1995
Summary The flowering and fruiting phenology and breeding system of Cistus albidus L. are studied. Four phases are established for the development of the flower, which remains open for a period of less than 14hrs, although this time—span can be further reduced if environmental conditions are unfavourable. Only 65.6 % flowers develop ripe fruits, the greatest losses occurring in the change from flower to unripe fruit. H is a xenogamous species with a PAD ratio of 5.426 ±816. Experimentally, fruits may be formed by autogamy through manual pollination, although this does not occur spontaneously. There is recognition by the plant of its own pollen tube, which reduced the production of fruits by…
MARIOLA: a model for calculating the response of mediterranean bush ecosystem to climatic variations
1995
Abstract The paper summarizes the bush ecosystem model developed for assessing the effects of climatic change on the behaviour of mediterranean bushes assuming that temperature, humidity and rain-fall are the basic dimensions of the niche occupied by shrub species. In this context, changes in the monthly weather pattern serve only to outline the growth conditions due to the nonlinearity of response of shrubs to climatic factors. The plant-soil-atmosphere system is described by means of ordinary non-linear differential equations for the state variables: green biomass, woody biomass, the residues of green and woody biomasses, faecal detritus of mammals on the soil, and the total organic matte…