Search results for "succe"
showing 10 items of 990 documents
Succession et remplacements de communautés à brachiopodes en régime de sédimentation discontinue (Jurassique Moyen, Bourgogne, France)
1993
Abstract Sequence stratigraphy throws a new and seminal light on the fossil record and helps in determining the respective role played by external control (community replacement) and internal control (paleoecological succession) in the temporal “train” of marine benthic paleocommunities. Five brachiopod-dominated communities (C1–C5) are recognized and their temporal “train” described, during the uppermost Bathonian-lower Callovian interval in Burgundy. The first series (C1–C3) exhibits a trend interpreted as a paleoecological succession and the next two (C3–C4, C4–C5) as community replacements. Within the scope of sequence stratigraphy, the paleoecological succession comes at the end of a t…
Customer Satisfaction and Quality Services in the Hotel Industry: A Strategic Approach
2018
In the hotel and hospitality industry, managers need to see quality as their main competitive advantage and need the acknowledge the ways in which quality can be used to drive competitiveness. As one of the most important aspects of hotel management and customer relationship management, the quality of all touristic services influenced by the intensifying competition, determine suppliers to take into account more the needs and requirements of customers in order to have a successful strategy. In the digital world where consumers are well-informed, the choice to purchase best quality services is the ultimate choice given the opportunity to compare other services with other companies. Both mana…
Dal coltivo ai boschi vetusti in ambienti mediterranei: l’accumulo di carbonio e azoto in suolo e lettiera durante i primi 120 anni dall’abbandono.
2013
Analisi degli approcci scientifici per la definizione comune di rinnovazione naturale con particolare riferimento all'ambiente mediterraneo
2015
La rinnovazione forestale è il futuro di ogni foresta ed è legata a diversi fenomeni ecologici. Molti studi hanno utilizzato vari metodi per analizzare la rinnovazione forestale; tuttavia, a livello internazionale, non esiste un metodo comune condiviso per classificare il fenomeno della rigenerazione stessa. Con l’obiettivo di trovare una possibile sintesi comune questo lavoro analizza il fenomeno della rinnovazione naturale attraverso sia l’analisi di inventari forestali sia di pubblicazioni scientifiche. La ricerca ha permesso di elaborare un elenco bibliografico multilingue attraverso l’interrogazione di database on-line, la ricerca con parole chiave e l’analisi dei riferimenti bibliogra…
Report on medium-term effects of the habitat protection and restoration activities of the LIFE Project “Maintenance of the habitats of the Macalube o…
2013
The Site of Community Importance (SCI) “Macalube di Aragona” is prone to severe desertification risk. In fact, its vegetation is disturbed not only by cyclic soil movements resulting from sedimentary volcanism, but it is strongly influenced by the hostile properties of the clayey substratum (prone to intense linear erosion, badly aired, rich in salts, etc.), the long drought period (ca. 4 months) and by the long-lasting history of human pressure. Both stress and disturbance factors influence progressive succession processes, so that the most “mature” local plant communities are () the chenopod shrublands referred to Salsolo-Peganion (habitat 1430 according to 92/43 EU Directive) and the hal…
Fitting the Stocking Rate with Pastoral Resources to Manage and Preserve Mediterranean Forestlands: A Case Study
2015
Pasture practices have affected Mediterranean forest ecosystems for millennia, and they are still quite widespread in mountainous areas. Nevertheless, in the last decades, the stability of forest ecosystems has been jeopardized due to the abandonment of traditional agro-pastoral practices, so that the gradual reduction of open areas due to progressive succession processes has caused a high increase of grazing pressure by livestock and wild ungulates feeding on forest areas. This paper aims at showing a methodological approach for evaluating the effect of applying measures in order to improve the grazing value of grasslands and ecotonal patches and lower the grazing impact on native woodland…
Reproductive characteristics and differential response to seasonal temperatures of Blue and Great Tits (Cyanistes caeruleus & Parus major) in three n…
2011
The breeding ecology of the Blue Tit (Cyanistes caeruleus) and Great Tit (Parus major) was studied for 18 years in three different neighbouring habitats in Sicily, comprising oakwoods, reforested pine and a reforested mix of pine and broad-leaved trees. Both Blue and Great Tits laid eggs up to two weeks earlier in oakwoods than in the reforested areas. Our results indicate a statistically greater breeding success for both species in the oakwoods compared to reforested habitats, with the mixed reforested habitat having a greater success than that of reforested pine habitat. We also correlated reproductive characteristics with local air temperature to verify if the laying date of tits advance…
Metodologia per lo studio delle successioni secondarie in ex-coltivi terrazzati: il caso studio di Pantelleria (Canale di Sicilia)
2005
Even if the abandonment of agricultural areas and the resulting processes of renaturation are a widespread phenomenon in the West-European countries, considerations about adeguate evaluation methods to study these processes are lacking. In detail, there is no standard method to study terraced areas, which are common in many parts of Europe and the Mediterranean region and which are frequently object to abandonment. In this study are presented the methodological aspects of a study on vegetation dynamics on abandoned terraces on Pantelleria Island. In order to answer the research questions, the first step was to choose area where many abandoned fields are present. Then, inside of these areas …
ROLE OF BEHAVIOUR IN MARINE ORGANISMS: POTENTIAL EFFECTS UNDER FUTURE OCEAN CONDITIONS.
2021
Over the last 250 years, the intensive burning of fossil fuels along with industrial processes and land uses (e.g. clearing forests and agriculture) has contributed to an increase in atmospheric CO2 from approximately 280 to 410 ppm, with a further increase (from 730 to 1020 ppm) projected by the end of this century. About 30% of the anthropogenic CO2 has been absorbed by the ocean, with a consequent decrease of the ocean’s surface pH causing a phenomenon better known as Ocean Acidification (OA). The average pH of the surface ocean has declined from 8.2 by 0.1 units since pre-industrial times as a result of CO2 emissions and a further reduction of 0.3–0.5 pH units is expected to occur by th…
Boschi di neoformazione in Italia: approfondimenti conoscitivi e orientamenti gestionali
2019
Nelle regioni meridionali, e in Sicilia in particolare, la fisionomia della vegetazione forestale post-abbandono è quella della macchia o arbusteto che difficilmente evolve verso un bosco propriamente detto. Il processo evolutivo della vegetazione spesso non raggiunge lo stadio di bosco non perché le condizioni ambientali non lo consentano ma per due ragioni fondamentali: i disturbi, in particolare gli incendi e il pascolo, e le limitazioni nell’arrivo di propaguli, causate dalla mancanza di piante madri, dei dispersori dei semi o entrambi. Infatti, in contesti favorevoli (assenza di disturbi e arrivo dei propaguli) la vegetazione evolve sino al bosco. Le formazioni preforestali frutto dei …