Search results for "sistematica"

OBSERVADORES DEL MAR - A MARINE CITIZEN SCIENCE PLATFORM WORKING FOR A HEALTHY OCEAN

2020

VII International Symposium on Marine Sciences (ISMS 2020), 1-3 July 2020 (Barcelona).-- 3 pages

Modeling Macroalgal Forest Distribution at Mediterranean Scale: Present Status, Drivers of Changes and Insights for Conservation and Management

2020

Macroalgal forests are one of the most productive and valuable marine ecosystems, but yet strongly exposed to fragmentation and loss. Detailed large-scale information on their distribution is largely lacking, hindering conservation initiatives. In this study, a systematic effort to combine spatial data on Cystoseira C. Agardh canopies (Fucales, Phaeophyta) was carried out to develop a Habitat Suitability Model (HSM) at Mediterranean scale, providing critical tools to improve site prioritization for their management, restoration and protection. A georeferenced database on the occurrence of 20 Cystoseira species was produced collecting all the available information from published and grey lit…

Composizione e struttura della comunità di fouling in un impianto di maricoltura (Golfo di Castellammare, Sicily N-O)

2005

The genus Ruppia L. (Ruppiaceae) in the Mediterranean region: An overview

2015

Abstract This paper reviews the current knowledge on the diversity, distribution and ecology of the genus Ruppia L. in the Mediterranean region. The genus Ruppia, a cosmopolitan aquatic plant complex, is generally restricted to shallow waters such as coastal lagoons and brackish habitats characterized by fine sediments and high salinity fluctuations. In these habitats Ruppia meadows play an important structural and functional role. Molecular analyses revealed the presence of 16 haplotypes in the Mediterranean region, one corresponding to Ruppia maritima L., and the others to various morphological forms of Ruppia cirrhosa (Petagna) Grande, all together referred to as the “R. cirrhosa s.l. co…

The shallow seagrass system in Southern Mediterranean (Sicily, Italy): a large sink of organic matter available to upper consumers.

2006

The effects of human activities related to salt production on the global complexity of a shallow hyperhaline system (Sicily, Italy) were investigated. This through monitoring dynamics of some physical, chemical and trophic factors recognised as main constraints for the origin of organic matter and its availability to apex consumers. The system was dominated by seagrass Ruppia cirrhosa and large stands of macroalga Chaetomorpha linum; isopods and gasteropods were the most abundant taxa among benthic organisms, while Aphanius fasciatus and Atherina boyeri represented up to 90% of all catch among the small resident fishes. Ruppia could function as a multidimensional framework able to increase …

A protocol to evaluate the antioxidant capacity by crocin bleaching assay in Pleurotus edible mushrooms

2008

Unpublished data on the chemical composition and nutritional value of Pleurotus mushrooms, growing on Umbelliferous plants (Apiaceae), are here reported. Cultivated basidiomata of four different Pleurotus taxa were analyzed in order to evaluate the composition in lipids, sugars, nitrogen, water, vitamins, ashes, and energetic values. The results showed that Pleurotus mushrooms are suitable in every type of diet thanks to their low caloric content, gastronomic value, vitamins, and mineral salt contents. The presence of a high content of vitamin B12 and riboflavin in Pleurotus nebrodensis is noteworthy.

First record of the invasive crab Percnon gibbesi (H. Milne Edwards) at Pianosa Island: the second goal reached by the innovative Marine Citizen Scie…

2020

This study represents the second scientific goal reached by the operating Project Team and the first record of the cryptogenic species Pec gbbe H Milne Edwards, at Pianosa Island October During a Scuba survey, almost specimens of P gbbe were recorded up to a depth of m and analyzed, according to some indicators such as health state, sex, morphology, and parameters such as temperature, covering of algal species, type of rocky bottom This tropical Atlantic grapsid crab is considered as the most invasive decapod currently expanding its distribution in the Mediterranean Sea.

Shallow waters as ecological corridors: preliminary data on wind-exposure, physico-chemical features and vegetation structure of the Western Sicilian…

2004

The study was carried out in the Natural Reserve of Trapani and Paceco saltworks shallow system (western Sicily: 37° 52’ North; 12° 28’East).The main goal is to deepen our understanding of whether the alteration of the complexity of these particular ecosystems is manifested through a consequent reduction of the number of migrant species and their density. To achieve this, we focalized our attention on organic matter fluxes (in terms of origin and availability for apex consumers), and on the density and distribution of aquatic birds.

Habitat use and selection, daily rhythm, food intake and predation risk of the invasive grapsoid crab Percnon gibbesi in the Mediterranean Sea

2005

MACROALGAL BIODIVERSITY RESPONSE UNDER A MULTIPLE STRESSOR SCENARIO

2019

Biodiversity-Ecosystem Function experimental stu- dies focusing on marine systems are few and produce contrasting outcomes. Here, we provide experimental proofs on how communities, on a natural gradient of diversity, respond under stressful conditions in inter- tidal habitats. In August 2017 a field experiment was performed in Western Sicily (Italy) in a site charac- terized by tidal pools whose biodiversity structure and composition change as a function of the distance from the low tide mark. The pools closer to the sea are more stable from a thermal and oxic point of view and characterized by high algal biodiversity. Those further from the sea are highly variable with extreme conditions a…