Integrated modelling in coastal lagoons: Sacca di Goro case study

Abstract

A coupled 3D hydrodynamic-biogeochemical model was developed and implemented for the Sacca di Goro coastal lagoon. The model considers nutrient and oxygen dynamics in water column and sediments. Among the biological elements, phytoplankton, zooplankton, bacteria, Ulva sp. and commercial shellfish (Tapes philippinarum) were taken into consideration. Nutrients fluxes from the watershed and open sea, as well as atmospheric inputs, heat flux, light intensity and wind shear stress at the water surface constituted the model forcing functions.The comparison of numerical results with available measurement data indicated that the model was able to capture the essential dynamics of the lagoon. This model has also been used to estimate clam productivity and its impacts on water quality and lagoon properties.

Spatiotemporal variations of zooplankton community in a shallow tropical brackish lagoon (Sontecomapan, Veracruz, Mexico)

“…Increased anthropogenic activities may accelerate the eutrophication process leading to dystrophic crises and/or irreversible deterioration (Bartoli et al 2001). These highly productive and vulnerable ecosystems are subjected to a strong variability at both spatial and temporal scale (Marinov et al 2008) and need to be protected and managed rationally to continue to play their ecological and socio-economic role.…”

Diatoms diversity and dynamics in a southern Mediterranean lagoon (Mellah, Algeria)

“…) are often lower compared with ecosystems of neighboring countries including Bizerte lagoon in Tunisia (Sahraoui et al, 2009;Béjaoui et al, 2010) and Nador lagoon in Morocco (El-Madani et al, 2011). Overall Mellah lagoon waters are well oxygenated unlike some Mediterranean lagoons which are characterized by periodic dystrophy crisis when the dissolved oxygen can reach critical values (Lenzi et al 2003;Viaroli et al, 2006;Marinov et al, 2008;El Madani et al, 2011;Pachés et al, 2014).…”

Estuarine Macrofauna Affects Benthic Biogeochemistry in a Hypertrophic Lagoon

“…Macrofauna abundance undergo The Sacca di Goro Lagoon has been intensively studied as one of the most economically important farming sites of the clam Vanerupis philippinarum in Europe, but also in a context of dystrophic events threated by this activity [36][37][38]. Studies mainly focused on the lagoon biogeochemistry [36][37][38][39][40], on the ecophysiology of blooming macroalgae [41], on meio-and macrofauna communities [42,43], and on ecosystem-level ecological processes (e.g., net ecosystem metabolism, sink-source functions [44]). Only a few studies have linked biogeochemical processes to macrofauna activity.…”

“…The four studied dominating areas of the lagoon revealed to be distinct environments, differing in sediment type, organic matter content, average salinity, and bottom water nutrient concentration (Table 1). Despite its small size, the Sacca di Goro Lagoon has a marked zonation that depends on the freshwater inputs, sea-lagoon water exchange, the extent of primary production, and deposition rates [43,44,47,48]. The observed difference in a number of bottom macrofauna species and functional traits ( Figure 2) is most likely related to these environmental differences.…”