1,720,998 research outputs found
Paesaggi marginali e paesaggi mediati
Full text linkL’evoluzione socio-economica ha radicalmente cambiato i paesaggi dell’europa, che erano stati plasmati dalle comunità rurali. Il recupero, con una valorizzazione economica e simbolica, è possibile solo con una nuova consapevolezza e responsabilità dell’intera società
A territorial contradiction
No full textSpatial planning and environmental restoration are essential corollaries to the management of protected natural areas; however, without a sound awareness of the evolutionary consistency of biocoenoses, the harmonious integration between human activities and ecosystem preservation remains an unattainable utopia. The theorisation of a balanced welfare, inspired by the universal tendency of ecosystems to reach a steady state, has to go along with the defection from any economic greed. © Springer International Publishing Switzerland 2015
Conservazione del suolo e politiche di sviluppo nella programmazione comunitaria 2014-2020: Le aree interne.
Full text linkDuring the next EU programming, Italy will suggest to commit a substantial portion of the funds to the development of the inland areas. This will happen through a structured program that will interact, since its start-up, with the local subjects in order to combine and to bind the development with the territory.
The maintenance of the territory together with the involvement of the local communities focus the attention on the management of the common goods. The debate is still open and the inland areas policy which is built up by the Department for Development and Economic Cohesion (formerly the Department for Development Policy and Cohesion) of the Ministry of Economic Development, does not face the legal recognition of the common properties as such (see the works of Rodotà’s commission), but it acknowledges their public utility through the practice of the development policies and the funding channels
Bioaccumulation of Heavy Metals by Herbaceous Species Grown in Urban and Rural Sites
No full textThe ability of seven herbaceous species (Hypericum perforatum L., Dactylis glomerata L., Plantago lanceolata L., Verbascum thapsus L., Picris hieracioides L., Cichorium intybus L., Daucus carota L.) to accumulate heavy metals such as Cd, Cr, Cu, Ni, Pb, and Zn has been studied. The concentration of heavy metals was determined in roots, basal and cauline leaves, flowers, and stalks for each collected species. The species were selected according to their cosmopolitan characteristics, morphology, life cycle, and phenology. Soils and plants were collected from two sites: close to a high traffic road in the inner city of Rome and in a natural park north of Rome (Canale Monterano). The concentration of elements in soil in descending order were Zn>Pb>Cu>Ni>Cr>Cd, while the EDTA extractable element concentrations in the roots followed the sequence Zn>Cu≈Pb>Cd>Cr>Ni. The bioaccumulation factors (BF) and the transport factors (TF) were calculated for each plant species. Results showed a significant relationship between heavy metals content in soil and plant species. H. perforatum showed a high Pb accumulation capacity in the stalk (70.30 mg kg−1) and roots (73.41 mg kg−1); moreover, BF>1 for this species at urban site has been obtained. Plantago lanceolata and Dactlys glomerata have shown higher Cd absorption (BF=1.33 and 0.55 in rural and urban sites, respectively). Plantago lanceolata in general shows high heavy metal uptake. The distribution of metals within the plant strongly depends on the species; the main accumulation of Ni, Cd, and Cu was observed in the leaves, while the highest Cr concentration was observed in the flowers. Plant species can be effectively considered as valid bioindicators of heavy metals derived from human activities and can be used to monitor pollution changes in the environment
Assessing desertification vulnerability on a local scale: the Castelporziano study case (central Italy)
No full textWith its variety of natural habitats and abundance of plant and animal species, the Presidential Estate of Castelporziano is a coastal area of great interest for the conservation of local biodiversity. However, past reclamation works and drainage systems have altered the original ecological status towards drier conditions, making the ecosystem more sensitive to environmental impacts. Moreover, intense urbanization and over-exploitation of groundwater in the surroundings, and decrease in annual rainfalls and higher average temperatures occurring over the past two decades, are likely to cause seawater intrusion into the groundwater and land degradation. Assessing for the environmental sensitivity of Castelporziano to land degradation and desertification is essential to understand the effectiveness of the current environmental policy. To this aim we adopted the MEDALUS methodology Kosmas et al. (Methodology for mapping Environmentally Sensitive Areas (ESAs) to Desertification, 31–47, 1999), widely recognized and applied in different environmental contexts and on different scales (national, regional, sub-regional). This methodology allows the classification of land in critical, fragile and potentially sensitive areas. The results identify 25 % of the area as not affected by desertification and only 3 % under threat, while the majority (72 %) falls within the intermediate classes of potential fragility. Considering the environmental policies and actions of protection applied to the Castelporziano area this widespread situation of potential fragility was not expected. © 2014, Accademia Nazionale dei Lincei
Impact of hay mowing on the Stonechat Saxicola torquatus nestling
Full text linkThe impact of hay mowing on nestling Stonechats Saxicola torquatus was describes and quantified through the feeding activity of adults. Three breeding pairs (6 broods) were monitored. Occurrence of invertebrate taxa in the diet of nestling Stonechats was reported. The feeding frequency differs immediately after hay mowing (reduction up to 73%) to go back up after a few days even hunting different prey. The reduction of the feeding frequency does not appear to have affected reproductive success for the breeding pairs at least when the hay mowing takes place in limited and protected areas. The diet composition change with increasing nestling age, spiders and ants increase during the first days
Educational or emotional languages? An interactive experiment with the Lucanian flora (S-Italy)
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