Search results for " forest"
showing 10 items of 1940 documents
L’apiculture dans la plaine des Vosges, Synthèse de l’atelier participatif du 05 avril 2022 à Vittel
2022
National audience; Ce document de synthèse présente les premiers résultats d’un atelier participatif conduit sur trois territoires du département des Vosges en avril 2022. Centrées sur la contribution de l’apiculture à la dynamique d’écologisation du territoire, ces tables rondes avaient pour objectif d’identifier les principaux enjeux de l’apiculture, les espaces propices et problématiques à l’apiculture ainsi que les initiatives favorables à l’activité apicole au sein de chacun de ces territoires. Ces échanges étant par ailleurs couplés à un exercice de spatialisation. Cet atelier participatif a notamment permis de révéler que l’apiculture et l’abeille sont des indicateurs de la qualité é…
Entrepreneurs de travaux forestiers : les corps à l’épreuve du marché
2014
International audience
Performances of neural networks for deriving LAI estimates from existing CYCLOPES and MODIS products
2008
International audience; This paper evaluates the performances of a neural network approach to estimate LAI from CYCLOPES and MODIS nadir normalized reflectance and LAI products. A data base was generated from these products over the BELMANIP sites during the 2001-2003 period. Data were aggregated at 3 km x 3 km, resampled at 1/16 days temporal frequency and filtered to reject outliers. VEGETATION and MODIS reflectances show very consistent values in the red, near infrared and short wave infrared bands. Neural networks were trained over part of this data base for each of the 6 MODIS biome classes to retrieve both MODIS and CYCLOPES LAI products. Results show very good performances of neural …
Long-term changes in breeding bird community of a Primeval Temperate Forest: 45 years of Censuses in the Białowieża National Park (Poland)
2022
W pracy omówiono długoterminowe trendy zmian liczebności 30 leśnych, pospolitych ptaków lęgowych na 7 stałych powierzchniach próbnych w Białowieskim Parku Narodowym w latach 1975– 2019 (wschodnia Polska, dalej BPN, Fig. 1). Przeanalizowano zmiany w składzie ugrupowań ptaków lęgowych w trzech najważniejszych typach drzewostanów pierwotnych w BPN: łęgach (Fig. 2), grądach (Fig. 3) i borach (Fig. 4). Cenzusy kontynuowane w latach 2015–2019 z wykorzystaniem kombinowanej metody kartograficznej na siedmiu stałych powierzchniach próbnych w BPN, monitorowanych od 1975 r., w tym dwóch na skraju lasu i pięciu w jego wnętrzu wykazały gniazdowanie 69 gatunków ptaków. Najwięcej gatunków gniazdowało w łę…
The Halaesa landscape (III B.C.): the origin of the traditional polycultural Mediterranean landscape
2014
The entire Mediterranean basin is characterized by landscape patterns whose compositions result from countless, long and complex cultural and historical processes. This paper traces the historic and “agri-cultural” processes that have characterized these complex agricultural systems and landscapes in order to better define: • the concept of a traditional rural Mediterranean landscape (TML); • the concept and importance of the complex-forms of polycultural (coltura promiscua) systems and landscapes, by following the historic development of this landscape; • their most important structural characters, configuration and bio-diversity at the landscape level, because of its environmental complex…
Qanat, gebbie and water sources: the last refuge for the malacologican freshwater fauna in Palermo (Sicily, Italy)
2017
The surroundings of Palermo were characterized, over the centuries, by the presence of many natural environments of great ecological and faunal importance. These environments were placed in a context characterized by minimal and sustainable urban development and large agriculture areas, dedicated to the development of tree crops such as citrus and orchards. These crops were supported by an imposing irrigation system that, using natural resources such as watercourses, wells and springs, collected and distributed water in soils through tanks, gebbie, qanat, irrigation channels (saje), etc. Fresh water mollusks, like many other animal and vegetable organisms, spread from the natural freshwater…
Forest accessibility, Madonie mountains (northern Sicily, Italy): implementing a GIS decision support system
2021
Valorisation and sustainable exploitation of woody biomass from cultivation interventions might be an important opportunity to track alternative development trails for rural communities in natural protected areas. The governance of Mediterranean protected areas is characterized by overlapping, sometimes conflicting institutions, stakeholders and regulations, causing negative impacts on decision-making processes. We present an open source GIS-based decision support system tool for mapping forest accessibility and optimizing woody biomass extraction. Two models were implemented to support forest managers during the decision-making process in designing and managing wood-energy supply chains. T…
Tempi e modi di un’invasione incontrastata: Pennisetum setaceum (Forssk.) Chiov. (Poaceae) in Sicilia.
2010
Circa 50 anni fa venivano segnalati a Catania e a Palermo i primi due casi di spontaneizza-zione di Pennisetum setaceum (Forssk.) Chiov. sul territorio siciliano. Dopo un breve periodo di latenza, questa pianta paleotropicale ha cominciato a diffondersi sempre più rapidamente, tanto che oggi l'adozione di scelte d'intervento assume carattere d'urgenza per via del pesante impatto che essa ha sia sulle comunità pre-forestali (macchie degradate e garighe) sia sulle praterie perenni e annue locali. Dopo aver fornito una panoramica sul comportamento di questa xeno-fita, viene analizzato il suo processo di espansione in Sicilia e viene comparata l'ampiezza della sua nicchia ecologica con quella d…
Elogio delle vagabonde. Erbe, arbusti e fiori alla conquista del mondo.
2010
Biostimulant Potential of Humic Acids Extracted From an Amendment Obtained via Combination of Olive Mill Wastewaters (OMW) and a Pre-treated Organic …
2018
Olive mill wastewaters (OMW) detain contain significant levels of phenolic compounds with antimicrobial/phytotoxic activity and high amounts of undecomposed organic matter that may a high pollutant load that exerts negative effects on soil biology because of significant levels in phenolic compounds with antimicrobial/phytotoxic activity and limited biodegradability, and high amounts of undecomposed organic matter. Among OMW detoxification techniques, those focusing on oxidative degradation of phenolic compounds are relevant those focusing on oxidative degradation of phenolic compounds to reduce their toxicity. The composting (bio-oxidation) process in particular, exploits exothermic oxidati…