Giovanna Puppi

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Inter-comparisons in the gas exchange patterns and root characteristics under both well-watered and drought conditions were done in three-years-old seedlings of three oak species (Quercus cerris L., Q. frainetto Ten., and Q. ilex L.) growing in controlled environment. Well-watered Q. cerris had greater physiological performances than other oaks, but under(More)
Disturbances affecting flow and sediment transport regimes (e.g. dams, diversions, gravel mining, weirs, bank reinforcements, climate changes) can promote riverbed degradation and channel narrowing, and thus influence vegetation dynamics and composition. This study investigates the relationships and feedbacks between channel adjustments and riparian(More)
This paper aims to describe the Italian PHEnology Network (IPHEN), a cooperative project started in 2006 with the aim of producing nationwide maps of analysis and forecast of plants phenological stages mainly used to satisfy the needs of agriculture, health and environmental care. Iphen is a data processing system composed of the following main segments (a)(More)
In this paper a simple conceptual model is introduced in order to predict the atmospheric pollen concentration threshold above which pollinotics show allergic symptoms. In addition, the range of the pollen sampler with respect to the local and remote emission of pollen grains, produced by the vegetation in its flowering phase, is highlighted. Two different(More)
Landscape structure as well as local vegetation influence biodiversity in agroecosystems. A study was performed to evaluate the effect of floristic diversity, vegetation patterns, and landscape structural connectivity on butterflies (Lepidoptera: Papilionoidea and Hesperiidae), carabids (Coleoptera: Carabidae), syrphids (Diptera: Syrphidae), and sawflies(More)
Erythronium dens-canis is an early-flowering understory lily of southern Europe with two leaves and a single flower, although a number of plants have only one leaf and do not flower. The leaves are mottled with silvery flecks and brown patches, that gradually vanish turning to a lively green color. The nature and function of this striking variegation(More)
We discuss the applicability of the argument of ADAIR (1) to the determination of the hyperon spins on the basis of the observed distribution in the production angle for the process ~-~N ~ Y + 0 . Because of the pronounced backward and forward peaking of these distributions it is found possible to use a large fraction of the events without jeopardizing the(More)
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