نتایج جستجو برای: coastal lagoon

تعداد نتایج: 58170  

Journal: :Diversity 2023

Coastal lagoons and brackish ponds are extremely dynamic temporary ecosystems that follow natural changes throughout their geological history. The correct management of the ensures integrity proper functioning. For this reason, ecological status should be surveyed for assessing most appropriate strategies use. In present study, historical datasets collected in 2003–2004 used to investigate spat...

Journal: :Chemosphere 2002
Anuradha Verma V Subramanian R Ramesh

An attempt has been made to estimate methane fluxes from a tropical coastal wetland the Vembanad Lake, a lagoon along the West Coast of India. It has been found that Vembanad Lake contributes significant amount of methane to the atmosphere. Average emissions varied spatially within the lake. Methane emissions were 193.2 +/- 24.5 mg m(-2) h(-1) at Kumaragam (fresh water) as compared to 9.3 +/- 9...

2003
Anna Maria De Biasi Lisandro Benedetti-Cecchi Lorenzo Pacciardi Elena Maggi Stefano Vaselli Iacopo Bertocci

Many studies in marine coastal lagoons have focused on the marine-to-terrestrial gradient as a main source of variation for the structure of assemblages. In this paper, the magnitude of differences among locations arranged along the marine-to-terrestrial gradient of the western lagoon of Orbetello (Grosseto, Italy) was contrasted with the amount of spatial variability occurring among sets of lo...

Journal: :Limnology and oceanography letters 2022

Coastal lagoons are biodiversity hotspots that support neighboring ecosystems and various services. They can exhibit distinct biophysical characteristics compared to the adjacent open sea act paradoxically as autonomous ecosystems. Using remotely sensed observations state-of-the-art numerical simulations, role of water column hydrodynamics in shaping seasonal succession phytoplankton biomass wa...

Journal: :Frontiers in Marine Science 2021

The Goro Lagoon Finite Element Model (GOLFEM) presented in this paper concentrates on the high-resolution downscaled model of Lagoon, along with five Po river branches and coastal area delta northern Adriatic Sea (Italy) where crucial socio-economic activities take place. GOLFEM was validated by means validation scores (bias – BIAS, root mean square error RMSE, absolute MAE) for water level, cu...

2004
Vittorio Ernesto Brando Riccardo Ceccarelli Simone Libralato Giampiero Ravagnan

Comparative analysis of trophic networks was carried out to evaluate environmental management actions aimed at countering an environmental crisis in Orbetello Lagoon, Italy. Two mass-balance models of this shallow water coastal system were constructed, for 1995 and 1996. During this period, there was an observed change in the composition of the submerged vegetation that indicated a significant ...

Journal: :Journal of mathematical biology 2005
Walter Allegretto Chiara Mocenni Antonio Vicino

In this paper we present and analyze a nutrient-oxygen-phytoplankton-zooplankton mathematical model simulating lagoon ecological interactions. We obtain sufficient conditions, based on principal eigenvalue criteria -- for the existence of periodic solutions. A decoupled model which arises in the high nutrient regime is then considered in further detail for gathering some explicit conditions on ...

Journal: :Estuaries and Coasts 2021

Abstract Fisheries are a staple human activity supported by coastal lagoons. Together with water quality and trophic status, lagoon morphology is acknowledged as one of the main ecological drivers fishery yields; however, role seascape structure still poorly understood. This paper investigates how morphological variables, habitat distribution diversity complexity affect yields artisanal perform...

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