1,721,389 research outputs found
Un manuel de climatologie : Pinna (M.), Climatologia
No full textPaul Patrice. Un manuel de climatologie : Pinna (M.), Climatologia. In: Annales de Géographie, t. 89, n°494, 1980. p. 506
Un manuel de climatologie : Pinna (M.), Climatologia
No full textPaul Patrice. Un manuel de climatologie : Pinna (M.), Climatologia. In: Annales de Géographie, t. 89, n°494, 1980. p. 506
LAGOON LITTER: PRELIMINARY APPROACH AND PROPOSAL OF SAMPLING METHODS FOR THE FUTURE IMPLEMENTATION OF WFD
Full text linkLagoons are one of the most productive ecosystems in the world, with unique
hydrodynamic and ecological conditions. They provide many goods and services,
otherwise they are located along coastal areas in which the anthropogenic pressures
are very high, especially for what concerns plastic pollution. These transitional water
ecosystems act as a trap for litter; in particular the impact of plastics could be higher
with respect to marine litter because of the “trapping effect” of the lagoons.
For this reason, the aims of this research are to analyze the methods for sampling
plastics in respect to the dimension of the particles, sedimentation and suspension
processes, and water circulation. Up to now, implementation methods for sampling
plastics in order to measure their abundance and distribution are not well investigated,
more efforts should be addressed in achieving consistency of the sampling techniques
as well as standardization.
The research was carried out in the Aquatina Lagoon (South Adriatic Sea, Apulia, Italy).
The investigated plastics were divided in 3 main categories: microplastics (smaller than
5 mm), mesoplastics (between 5 mm and 2.5 cm) and macroplastics (bigger than 2.5
cm).
The lagoon has been divided in different compartments that were separately
considered and sampled: water surface, bottom and banks.
Each compartment was sampled with different sampling methods such as: i) plankton
net (200 μm) for the water surface, in order to have a better precision about the
abundance and distribution of microplastic; ii) square method was applied for sampling
bottom and banks. Bottom samples were collected using a grab while bank samples
were collected by hand.
Since the quantifying of the plastics is the first step to analyze the consequences of this
anthropogenic impact on human-health, food chain, supply natural and goods and
services of lagoons, here we propose and applied sampling methods for collecting
plastics in different compartments and in order to catch the most common dimensional
categories of plastic particles
RESPONSE OF COMMUNITY AND TRAIT PATTERNS TO SIMULATED SPECIES LOSS IN COASTAL LAGOONS
Full text linkSpecies loss is usually considered to have negative impacts on ecosystem integrity and
stability, but the details of the relationship between biodiversity and ecosystem
functioning are still far from being thoroughly understood. In this study we
computationally simulate species loss in six Mediterranean coastal lagoons and
investigate how the species distribution patterns and the associated biological traits
patterns change under scenarios of increasing species loss, using polychaetes as a
model taxon. Species were progressively removed from the original dataset and the
similarity between the full assemblage and the reduced datasets of both species and
associated biological trait patterns was calculated. The results indicate the extent of
changes that could follow species loss in the real world, and allow insights into the
potential resistance of these lagoons to loss of species, both in terms of community
pattern and functional capacity. The results indicate that while the change of species
and trait patterns was strongly correlated in most lagoons, each lagoon showed an
individual reaction: In several lagoons, the dominance of one or few species was the
major driver for the observed patterns and extreme and unpredictable changes
followed the loss of these species, whereas other lagoons showed indications for niche
partitioning and seemed to have a higher resistance towards species loss. Species
richness appeared to be less important for the ability of the lagoons to buffer changes,
instead the initial composition of the assemblage and the identity of the lost species
determined the observed patterns in each lagoon
Pinna (M.). 1984. — La storia del clima. Variazioni climatiche e rapporto clima-uomo in età postglaciale.
No full textLoup Jean. Pinna (M.). 1984. — La storia del clima. Variazioni climatiche e rapporto clima-uomo in età postglaciale. . In: Revue de géographie alpine, tome 73, n°3, 1985. p. 339
Do gender identities of femininity and masculinity affect the intention to buy ethical products?
Full text linkThis study shows that gender identity affects ethical intentions. We investigate the intention to purchase ethical products through a survey study among young consumers in Italy. Measures of planned behavior, internal ethics, self-identity, and moral harm, together with proxies for individual gender identities of femininity and masculinity are included in our model of intention to purchase ethically. Results show that femininity significantly increases ethical intent, whereas masculinity has an opposite effect. These findings are robust to gender. In fact, the relations of femininity and masculinity on the intention to consume ethical products hold when the subsamples of males and females are considered. This study relates to the ongoing debate regarding the determinants of ethical decision-making and the feminine stereotype by extending the understanding of the attitude-intention gap in ethical consumption among young consumers in Italy. Finally, implications and avenues for further research are discussed
Prognostic models in bipolar disorder: can the prediction of the long-term clinical course rely on the integration of clinical and molecular data?
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