Modelling macroalgae using a 3D hydrodynamic-ecological model in a shallow, temperate estuary

Trancoso, Ana Rosa; Saraiva, Sofia; Fernandes, Leonor; Pina, Pedro; Leitão, Paulo C.; Neves, Ramiro

doi:10.1016/j.ecolmodel.2005.01.054

Cited by 84 publications

(53 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…MOHID Water Modelling System (2004) has been applied to different estuarine ecosystems including: Tagus estuary (Portela, 1996;Pina et al, 2000;Pina, 2001;Braunschweig et al, 2003;Pina et al, 2003), Guadiana estuary (Cunha et al, 2000), Douro estuary (Pina et al, 2003), Sado estuary (Martins et al, 2001), Ria Formosa (Martins et al, 2004), Ria de Aveiro (Trancoso et al, 2005) and Ria de Pontevedra (Galicia) (Villarreal et al, 2002).…”

Section: Study Areasmentioning

confidence: 98%

Modelling the influence of nutrient loads on Portuguese estuaries

et al. 2007

Self Cite

View full text Add to dashboard Cite

The effects of implementing Directive 91/271/EEC of 21 May 1991 (Waste Water Treatment Plan Directive) and Directive 91/676/EEC of 12 December (Nitrates Directive) are analysed in 7 Portuguese estuaries (Minho, Lima, Douro, Mondego, Tagus, Sado and Guadiana) and two coastal lagoons (Ria de Aveiro and Ria Formosa), with a modelling approach. MOHID Water Modelling System was used to perform simulations with three nitrogen load scenarios for each system: a reference scenario, a 50% nitrate removal by agriculture scenario and another with a 100% nutrients removal by waste water treatment plants (WWTP). It is shown that the interaction between hydrodynamic and ecological processes is an important feature to study trophic problems in estuaries. Ecological processes such as primary production only occur inside the system if the residence time of water is high enough to enable organismal activity and if the adequate conditions are found (e.g. light, nutrients, temperature). From the model results it is possible to conclude: (i) in systems with short residence time a reduction in nutrient load will only produce a decrease in nutrient transit and will not affect the system's global ecological status (e.g. Douro Estuary); (ii) in systems with long residence time the effects will range from significant, when primary production is mostly limited by nutrients (e.g. Ria de Aveiro), to non-significant, when primary production in the system is light-limited (e.g. Tagus Estuary).

show abstract

Section: Study Areasmentioning

confidence: 98%

Modelling the influence of nutrient loads on Portuguese estuaries

et al. 2007

Self Cite

View full text Add to dashboard Cite

show abstract

“…Ren & Ross 2005, LauzonGuay et al 2006, Ferreira et al 2012) and kelps (Petrell et al 1993, Duarte et al 2003, Trancoso et al 2005, Shi et al 2011, Ren et al 2012). The present study is new in the sense that we used fully coupled and nested 3D models with realistic weather data and hydrodynamic boundary conditions, as well as detailed nutrient loading rates and salmon biomass.…”

Section: Simulation Experiments and Implications For Imtamentioning

confidence: 99%

Modelling the cultivation and bioremediation potential of the kelp Saccharina latissima in close proximity to an exposed salmon farm in Norway

Broch¹,

Ellingsen²,

Forbord³

et al. 2013

Aquacult. Environ. Interact.

View full text Add to dashboard Cite

A 3-dimensional hydrodynamic−ecological model system (SINMOD) was used to estimate the full-scale cultivation potential of the brown alga Saccharina latissima in integrated multi-trophic aquaculture (IMTA) with Atlantic salmon Salmo salar. A previously developed model for the frond size and composition (carbon and nitrogen content) of S. latissima sporophytes was adjusted to data from an outdoor mesocosm growth experiment and then coupled and run online with the 3-dimensional model system. Results from simulations were compared with data from an IMTA field experiment, providing partial validation of the hydrodynamic-ecologicalkelp model system. The model system was applied to study the large-scale cultivation potential of S. latissima in IMTA with salmon and to quantify its seasonal bioremediation potential. The results suggest a possible yield of 75 t fresh weight S. latissima ha −1 in 4 mo (February to June) and about 170 t fresh weight ha −1 in 10 mo (August to June). The results further suggest that the net nitrogen consumption of a 1 ha S. latissima installation in the vicinity of a fish farm producing approximately 5000 t salmon in a production cycle is about 0.36 (0.15) t NH 4 + -N, or a removal of 0.34% (0.41%) of the dissolved inorganic nitrogen effluent with a cultivation period from August (February) to June. Due to the differing seasonal growth patterns of fish and kelp, there was a mismatch between the maximum effluent of NH 4 + -N from the fish farm and the maximum uptake rates in S. latissima.

show abstract

“…These modules can be coupled, thus allowing simulating the complexity of these systems. Only the major features of the model are mentioned here, since a detailed description can be found in the literature for the hydrodynamic and transport modules (Martins et al, 2001;Leitão et al, 2005;Malhadas et al, 2010;Mateus et al, 2012b), as well as the ecological modules (Martins et al, 2003;Trancoso et al, 2005;Saraiva et al, 2007).…”

Section: Estimating Nutrient Loads Generated In the Watershedmentioning

confidence: 99%

“…1a), following the methodology proposed by Trancoso et al (2005) and Saraiva et al (2007). Boxes outline was based on previous knowledge of the residence time (Malhadas et al, 2009a, b) and ecological dynamics of the lagoon: inlet section until the central body of the lagoon (box 1); the central bay (box 2); delta of Arnóia/Real Rivers (box 3); Poça das Ferrarias embayment (box 4), and branches (box 5, BSB; box 6, BB).…”

Section: Management Scenariosmentioning

confidence: 99%

Trophic state evaluation after urban loads diversion in a eutrophic coastal lagoon (Óbidos Lagoon, Portugal): a modeling approach

et al. 2014

Self Cite

View full text Add to dashboard Cite

Ó bidos Lagoon is classified as a sensible system according to the eutrophication criteria in the Portuguese Decree-Law 149/2004, which transpose the standards of Urban Waste Water Treatment Directive (Council Directive 91/271/EEC) concerning urban waste water treatment. From September 2005 onwards, the urban loads of five Waste Water Treatment Plant (WWTP) were deviated to a submarine outfall to prevent water degradation and improve the lagoon trophic state (LTS). This paper evaluated the LTS after urban loads diversion, testing the hypothesis behind the management decision. First, the loads reaching the lagoon were determined with the Harp-Nut guidelines and watershed modeling. Then, the water quality in the lagoon was simulated with a hydro-ecological model and compared with measured data. Finally, management scenarios corresponding to nutrient loads reduction were tested to determine hypothesis-driven LTS. Results showed that the loads from pig farms should be diverted instead of the WWTP, to improve the LTS and achieve a ''Good/Bad'' status. The proposed method stresses the importance of integrated modeling tools in the Water Framework Directive, given their skill in testing various hypothesis, and ultimately ruling out inadequate management decisions before implementation.

show abstract

Modelling macroalgae using a 3D hydrodynamic-ecological model in a shallow, temperate estuary

Cited by 84 publications

References 18 publications

Modelling the influence of nutrient loads on Portuguese estuaries

Modelling the influence of nutrient loads on Portuguese estuaries

Modelling the cultivation and bioremediation potential of the kelp Saccharina latissima in close proximity to an exposed salmon farm in Norway

Trophic state evaluation after urban loads diversion in a eutrophic coastal lagoon (Óbidos Lagoon, Portugal): a modeling approach

Contact Info

Product

Resources

About