Search results for "Waters"

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 …

Temporary waters: biodiversity, functional ecology, vulnerability and susceptibility to climate change

2014

Temporary waters contribute to regional diversity disproportionately compared to the Earth’s surface they cover. This presentation i) describes the reasons underlying this biological diversity, ii) analyzes the importance of temporary waters as hotspots of biodiversity, iii) stresses how these ecosystems represent a valuable tool to evaluate the impact exerted by human activities on our Planet, and iv) consider the possibility to extend the principles of the Integrated Lake Basic Management developed by ILEC in order to achieve a sustainable management of these ecosystems. Moreover, temporary waters are strongly impacted by the climate change, which modifies their hydroperiod and reduces th…

Trace metal contamination in a mediterranean coastal pond (Acquatina, Puglia)

2011

As the interface between land and sea, transitional areas are often negatively impacted by anthropic activities. This impact is the result of many processes, including direct input of pollutants which accumulate in both sediments and aquatic organisms. The aim of this paper is to identify trace metal (As, Cd, total Hg and Pb) contamination in the Acquatina pond (Apulia, Italy), using sediment and fish (A. boyeri, C. labrosus, D. annularis, D. dentex, D. sargus, D. vulgaris, E. encrasicholus, G. paganellus, L. ramada, M. surmuletus, S. salpa, S. solea) as descriptors. Sampling was carried out in three stations (South, Central and North) and four seasons (summer and autumn 2007, winter and sp…

Acque temporanee: biodiversità, funzioni ecosistemiche, vulnerabilità e sensibilità ai cambiamenti climatici

2014

Le acque temporanee contribuiscono alla biodiversità regionale con una ricchezza specifica sproporzionatamente elevata in rapporto all’esigua superficie da esse occupata. Questa breve nota descrive le ragioni che determinano tale diversità biologica, analizza l’importanza delle acque temporanee come hotspot di biodiversità e sottolinea come questi ecosistemi rappresentino un valido strumento per valutare l’impatto delle attività umane sul Pianeta. In aggiunta, le acque temporanee sono particolarmente vulnerabili agli effetti del cambiamento climatico che ne influenza l’idroperiodo e ne riduce la numerosità sul territorio. Tali effetti accoppiati alla distruzione diretta operata dalle attivi…

Proceedings of 13th International Workshop on physical processes in natural waters

2009

THE SIGNS OF WATER

2020

Signs of Water. A hidden waterscape in Palermo is recovered from the oblivion through a process consisting in a territorial analysis, a careful reading of ancient maps and historical archives, a deep design of new landscapes trancing the signs of the passage of water in a land where water has a permanent role along the centuries. A vast agricultural territory covers the Conca d'Oro valley, where lays the city of Palermo: rich in landscape, environmental and archaeological heritage, only some areas were subtracted from the intense construction and speculative activity that characterized the history of the city in the sixties and the seventies of the twentieth century. The main goal of this s…

EXPERIMENTAL CHARACTERIZATION OF ELECTRO-MEMBRANE PROCESSES FOR THE PRODUCTION AND STORAGE OF ENERGY

2022

Queer Sexualities, Queer Spaces: Gender and Performance in Sarah Waters' "Tipping the Velvet"

2011

Diatoms from thermal-sulphur waters of “Fiume Caldo” (North-western Sicily).

2007

The present study describes the taxonomic composition, richness and seasonal dynamics of the diatom community from thermal-sulphur waters of "Fiume Caldo" (Northwestern Sicily). The diatom flora of these waters consists of 64 taxa, showing similarities with thermal diatom communities from different geographical areas. Among the recorded taxa, Diadesmis confervacea Kütz. is a new record for Sicily. Seasonal changes in assemblage composition and richness have been recorded; the highest diversity values were observed during winter and spring, while during summer the diatom community consisted of a limited number of organisms whereas blue-green algae were quantitatively dominant. Inside the stu…