Search results for " CONSERVATION"

First description of migration and wintering of adult Egyptian Vultures Neophron percnopterus tracked by GPS satellite telemetry

2010

Capsule Over two years birds showed high territorial and high winter site fidelity in the Sahel.

Assessing the functional connectivity of reserve networks in continuously varying nature under the constraints imposed by reality

2011

Geoconservation in Sicily (Italy): the Example of the Isola delle Femmine (Palermo)

2022

Abstract The Regional Administration of Sicily recently erected Isola delle Femmine—a small island of the Tyrrhenian Sea, close to Palermo—as a geosite. A detailed geological survey has been carried out in order to define the most important geological features of the island together with the development of a new geological map based on topographic data and a digital model at 1:2.000 scale specially processed. Finally, a geological pathway through the island has been traced and illustrated. The geological substrate of Isola delle Femmine consists of a Mesozoic carbonate succession belonging to the Panormide Carbonate Platform. Two lithostratigraphic units have been differentiated. The lowest…

Seed cryopreservation of Fraxinus angustifolia Vahl

2016

Fraxinus angustifolia is used for afforestation and for production of both valuable timber and manna , a substance with pharmacological applications. The aim of this research was to establish the optimized condition for cryopreservation of F. angustifolia seeds, in order to protect the germplasm of this species. Germination percentage and mean time of germination of non-treated seeds (control) and liquid nitrogen-treated seeds were established in water or in 10 -6 M gibberellic acid (GA 3 ). The seeds could be cryopreserved with 3% of moisture content (MC) and germinated easily in water (70.0 ± 5.0%), while seeds cryopreserved with 6% MC showed a physiological dormancy. This state could be …

Genetic diversity of early ripening breba accessions (Ficus caricaL.) found in the “Pomona” Apulian collection

2017

In order to study fig (Ficus carica L.) biodiversity in Southern Italy, a study was performed in a private Apulian collection, "I Giardini di Pomona", in which 350 different native and international cultivars were recovered in the last 15 years. This collection is located in middle part of Apulia region inside an area of great charm called "Valle D'Itria". In the region, fig is an important edible fruit tree species and it has been used for fresh fruit production, for centuries. Moreover, fig is considered as an important element of natural landscape and as significant cultural heritage. In this study, the Apulian breba cultivars, characterized by interesting agronomic traits, such as early…

Molecular and morphological diversity of on-farm hazelnut (Corylus avellana L.) landraces from southern Europe and their role in the origin and diffu…

2013

Hazelnut (Corylus avellana L.) is a traditional nut crop in southern Europe. Germplasm exploration conducted on-farm in five countries (Portugal, Spain, Italy, Slovenia, and Greece) identified 77 landraces. The present work describes phenotypic variation in nut and husk traits and investigates genetic relationships using ten simple sequence repeat (SSR) markers among these landraces, 57 well-known references cultivars, and 19 wild accessions. Among the 77 landraces, 42 had unique fingerprints while 35 showed a SSR profile identical to a known cultivar. Among the 42 unique landraces, morphological observations revealed high phenotypic diversity, and some had characteristics appreciated by th…

Centennial olive trees as a reservoir of genetic diversity

2011

†Background and Aims Genetic characterization and phylogenetic analysis of the oldest trees could be a powerful tool both for germplasm collection and for understanding the earliest origins of clonally propagated fruit crops. The olive tree (Olea europaea L.) is a suitable model to study the origin of cultivars due to its long lifespan, resulting in the existence of both centennial and millennial trees across the Mediterranean Basin. †Methods The genetic identity and diversity as well as the phylogenetic relationships among the oldest wild and cultivated olives of southern Spain were evaluated by analysing simple sequence repeat markers. Samples from both the canopy and the roots of each tr…

Assessment of genetic variation in SicilianHelichrysum(Asteraceae) and implication to germplasm conservation

2008

Some taxa of Sicilian Helichrysum related to sect. Stoeachadina have an uncertain systematic position; moreover, they are rare and endangered. In order to preserve these taxa in a genebank, a strategy to keep their genetic variation as high as possible is required. The high informative content of AFLP markers was used to assess genetic variations within and between populations and their relationships. The results show that all populations are genetically similar, even though there are two distinct groups: the first is the population referred to H. pendulum, and the second is represented by other populations belonging to several different specific and intraspecific taxa. The H. pendulum popu…

Social Tourism and Healthy Ageing

2015

Recent research in social tourism notes possible links between tourism participation and improvements in health. However, there is a lack of quantitative evidence concerning the potential links between tourism participation and self-reported health amongst older people. An ageing society requires measures to promote independent living and enhance older people's quality of life. This paper provides evidence that older tourists are more active and healthy than non-tourists, from a study comparing health perceptions amongst Spanish older people. The results provide tentative conclusions of causal relationships between tourism and dimensions of physical and mental health through a Structural Eq…

The commercial activity of tourism companies. Perception of tourism students

2019

El presente trabajo pretende analizar la opinión que los estudiantes universitarios de Turismo tienen respecto a desarrollar su futuro laboral en el área comercial de empresas turísticas, la que más oferta de puestos de trabajo genera en España. En concreto, se pretende conocer cuál es su percepción sobre este tipo de trabajo, tanto desde un punto de vista personal como profesional. Para alcanzar estos objetivos, se ha encuestado a 348 estudiantes de diferentes cursos, de grado y posgrado, que han sido clasificados en función de su interés por trabajar como vendedores en el sector turístico. Los resultados muestran que, en general, la valoración de una futura actividad de tipo comercial es …