نتایج جستجو برای: coastal lagoon

تعداد نتایج: 58170  

Journal: :E3S web of conferences 2021

This paper aims to present a comprehensive socio-economic and environmental analysis of the Oualidia lagoon in Morocco. is classified as RAMSAR site since 2005, providing valuable ecosystem services for surrounding population. followed Drivers-Activities-Pressures-State-Change-Impact-Responses (DPSIR) framework evaluate condition changes within support decision-making. The research suggests pot...

2015
Maria Virgínia Alves Martins Noureddine Zaaboub Lotfi Aleya Fabrizio Frontalini Egberto Pereira Paulo Miranda Miguel Mane Fernando Rocha Lazaro Laut Monia El Bour Liping Zhu

This study investigated the environmental quality of the Bizerte Lagoon (Tunisia) through an integrated approach that combined environmental, biogeochemical, and living benthic foraminiferal analyses. Specifically, we analyzed the physicochemical parameters of the water and sediment. The textural, mineralogical, and geochemical characteristics of the sediment, including total organic carbon, to...

2013
Monia Renzi Andrea Giovani Silvano E. Focardi

This paper describes recent levels of surfactants measured in a coastal lagoon ecosystem highly stressed by human activites: the Orbetello lagoon (Southern Tuscany, Italy, Ramsar Site IT008). Significance of difference among concentrations measured before and after summertime are explored in order to evaluate effects related to tourism exploitation. Among surfactants, methylene blue active anio...

Journal: :Journal of environmental monitoring : JEM 2010
Ana Brito Alice Newton Paul Tett Teresa F Fernandes

Coastal shallow lagoons are considered to be highly important systems, which have specific biogeochemical cycles and characteristics. The assessment of sediment-water interfaces is essential to understand nutrient dynamics and to evaluate the vulnerability to eutrophication, especially in regions of restricted water exchange (RRE), such as the Ria Formosa, which have natural conditions for the ...

2014
Anna Filipkowska Grażyna Kowalewska Bruno Pavoni

Sediment samples were collected in the Gulf of Gdańsk, and the Vistula and Szczecin Lagoons-all located in the coastal zone of the Southern Baltic Sea-just after the total ban on using harmful organotins in antifouling paints on ships came into force, to assess their butyltin and phenyltin contamination extent. Altogether, 26 sampling stations were chosen to account for different potential expo...

Journal: :Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology 2009
Claudia Piccini Daniel Conde Jakob Pernthaler Ruben Sommaruga

We evaluated the effect of photochemical alterations of chromophoric dissolved organic matter (CDOM) on bacterial abundance, activity and community composition in a coastal lagoon of the Atlantic Ocean with high dissolved organic carbon concentration. On two occasions during the austral summer, bacteria-free water of the lagoon was exposed to different regions of the solar spectrum (full solar ...

2001
José Figueiredo da Silva Robert W. Duck

The natural evolution of the estuary-coastal lagoon system of the Ria de Aveiro, Portugal, was halted in 1808 by the construction of a new inlet/outlet channel through the sand spit which isolates it from the Atlantic Ocean. In consequence, tidal amplitudes in the lagoon increased from 0.07–0.13 m to over 1 m. Improvements to the channel since 1936, including construction of jetties, breakwater...

Journal: :Brazilian journal of biology = Revista brasleira de biologia 2007
S Melo R L Bozelli F A Esteves

Spatial and temporal variability of the phytoplankton community in the tropical coastal Imboassica lagoon, an environment naturally isolated from the ocean by a narrow sandbar, was analysed every two weeks for 19 months by sampling three sites. During this study, the lagoon received direct input of marine water three times, resulting in remarkable salinity, nutrient concentrations and phytoplan...

Journal: :The Journal of heredity 2013
Vincent P Richards Thomas W Greig Patricia A Fair Stephen D McCulloch Christine Politz Ada Natoli Carlos A Driscoll A Rus Hoelzel Victor David Gregory D Bossart Jose V Lopez

Globally distributed, the bottlenose dolphin (Tursiops truncatus) is found in a range of offshore and coastal habitats. Using 15 microsatellite loci and mtDNA control region sequences, we investigated patterns of genetic differentiation among putative populations along the eastern US shoreline (the Indian River Lagoon, Florida, and Charleston Harbor, South Carolina) (microsatellite analyses: n ...

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