Long-term simulation of main biogeochemical events in a coastal lagoon: Sacca Di Goro (Northern Adriatic Coast, Italy)

Zaldı́var, J.M.; Cattaneo, E.; Plus, Martin; Murray, C.N.; Giordani, Gianmarco; Viaroli, Pierluigi

doi:10.1016/j.csr.2003.01.001

Cited by 61 publications

(26 citation statements)

References 28 publications

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“…The different components of the 3D hydrodynamicbiogeochemical model have been discussed in detail by Marinov et al (2006) for hydrodynamics, Zaldívar et al (2003) for ecology and biogeochemistry, and by Zaldívar et al (2005) for the stage-based model of clam farming. Here, we will focus on the results obtained by the integration of all these compartments, using approach and assumptions of the above-mentioned works.…”

Section: Biogeochemical Model Descriptionmentioning

confidence: 99%

“…The model enhancement was technically carried out by modification of the 0D model equations, which primarily consist of time derivatives and source/sink terms, by adding a complete set of advectiondiffusion dynamical terms to each of original 0D model equations by Zaldívar et al (2003). Since the model extension is built on the original 38 state variables of 0D version here they are only summarized in Table 1.…”

Section: Biogeochemical Model Descriptionmentioning

confidence: 99%

“…This approach accounts for all nutrients state variables. The other variables were initialized using results from the 0D model of Zaldívar et al (2003) that was run from 1989 to 1998. The data for clam population were initialized using results from the discrete 0D stagebased model of Zaldívar et al (2005).…”

Section: Initial Conditionsmentioning

confidence: 99%

“…The coupled model is designed by integration of previously established models, namely COHERENS (Luyten et al, 1999(Luyten et al, , 2003 a 3D hydrodynamic finite-difference multi-purpose model, a 0D biogeochemical model (Zaldívar et al, 2003) and a stagebased model for clam farming activities including seeding and harvesting (Zaldívar et al, 2005). The resulting 3D hydrodynamic-biogeochemical model accounts the specific physical and biological processes of the lagoon and address both water column and sediments.…”

Section: Introductionmentioning

confidence: 99%

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Integrated modelling in coastal lagoons: Sacca di Goro case study

et al. 2008

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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.

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Section: Biogeochemical Model Descriptionmentioning

confidence: 99%

Section: Biogeochemical Model Descriptionmentioning

confidence: 99%

Section: Initial Conditionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Integrated modelling in coastal lagoons: Sacca di Goro case study

et al. 2008

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“…Nutrient mineralization by infaunal bivalve species has been studied in laboratory and mesocosm experiments (Doering et al, 1987), in situ benthic chambers, sediment core incubations (Cockcroft, 1990;Yamamuro and Koike, 1993;Bartoli et al, 2001), and by quantification of the total upward flux of nutrients from sediments and subsequent estimation of the relative contribution of animal excretion (Nakamura et al, 1988;Kiibus and Kautsky, 1996;Magni et al, 2000;Hiwatari et al, 2002;Kohata et al, 2003). These studies have shown that nutrient mineralization is an important source for water-column primary production, and this concept is incorporated in the ecological model for infaunal bivalve fisheries (e.g., Zaldívar et al, 2003;Spillman et al, 2008). However, a recent study showed that nutrient mineralization by infaunal bivalve species (Ruditapes philippinarum, Musclista senhousia) affects nutrient concentrations in the water column as well as pore water (up to 10 cm depth) (Magni and Montani, 2006).…”

Section: Introductionmentioning

confidence: 99%

Reevaluation of the nutrient mineralization process by infaunal bivalves (Ruditapes philippinarum) in a shallow lagoon in Hokkaido, Japan

Komorita

Kajihara

Tsutsumi

et al. 2010

Journal of Experimental Marine Biology and Ecology

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Previous estimations of nutrient mineralization in the water column by infaunal bivalves might have been overestimated because of underestimation of the uptake process by microphytobenthos in the field. We conducted field surveys of environmental conditions and quantitative sampling of Ruditapes philippinarum in a shallow lagoon system (Hichirippu Lagoon, eastern Hokkaido, Japan) in August 2006. We recorded the spatial distribution pattern and the molar ratio of dissolved inorganic nutrients to determine the limiting nutrients for microphytobenthos, to evaluate the input and output of nutrients at the entrance of the lagoon station, and to estimate potential nutrient mineralization by R. philippinarum. Our aim was to reevaluate the nutrient mineralization process by infaunal bivalve species. In this study, the mean standing stock of microphytobenthos inhabiting surface sediment (5 mm thick) on the tidal flats was 100 times higher than that of phytoplankton (1 m depth). Low N/P and high Si/N ratios (mean = 2.6 and 17.6, respectively) near the entrance of the lagoon compared to those of microphytobenthos (N:P:Si = 10.1:1:18) clearly suggest N deficiency. The flux of NH 4 -N coming into the lagoon was 3.4 kmolN d −1 , and the flux out was −3.7 kmolN d −1 . Thus, assuming that there would have been no phytoplankton and microphytobenthos uptake during the day, 0.3 kmolN d −1 of NH 4 -N was produced within the lagoon. However, the NH 4 -N mineralization rate of the clams has been estimated to be approximately 7.7 ± 6.8 kmolN d −1 . Thus, 96% (

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Eutrophication and Nutrient Fluxes in Mediterranean Coastal Lagoons

Padedda

Pulina

Satta

et al. 2019

Encyclopedia of Water

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In this article, we provide a general overview of eutrophication in aquatic ecosystems, with a focus on the Mediterranean Sea and two Sardinian lagoons (western Mediterranean Sea, Italy), as case studies. In the Cabras Lagoon, we assessed the nutrient budget and fluxes using the biogeochemical Land–Ocean Interaction Coastal Zone model. High nutrient and chlorophyll‐ a concentrations indicated eutrophic conditions, summer being the most critical season as related to the decrease in riverine water supply, the increase in water evaporation and a concurrent isolation of the lagoon from the adjacent sea. In the Calich Lagoon, the eutrophic conditions, assessed during 2008–2015, seemed to be attenuated by a good water exchange with the sea, yet potential harmful phytoplankton species were found. Overall, the present study shows how Mediterranean coastal lagoons are strongly influenced by both terrestrial and marine ecosystems. Eutrophication is one of the main forms of environmental degradation of aquatic ecosystems, and in coastal lagoons, this is the consequence of multiple pressures, which have led to significant losses of major ecosystem goods and services, such as aquaculture, fishery, and tourism. Good practices and landscape management are urgently needed to prevent further deterioration of these sensible ecosystems.

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Long-term simulation of main biogeochemical events in a coastal lagoon: Sacca Di Goro (Northern Adriatic Coast, Italy)

Cited by 61 publications

References 28 publications

Integrated modelling in coastal lagoons: Sacca di Goro case study

Integrated modelling in coastal lagoons: Sacca di Goro case study

Reevaluation of the nutrient mineralization process by infaunal bivalves (Ruditapes philippinarum) in a shallow lagoon in Hokkaido, Japan

Eutrophication and Nutrient Fluxes in Mediterranean Coastal Lagoons

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