title: Simulations of nutrient emissions from a net cage aquaculture system in a Brazilian bay.
abstract: Hydrodynamics and transport simulations were conducted with the modeling software TELEMAC-2D on Icó-Mandantes bay, a branch of the Itaparica reservoir. The bay has a maximal operational water level amplitude of 5 m and is suffering from eutrophication and algae bloom. Therefore, we investigated low and high water level scenarios with two different high resolution meshes, with the purpose to deeper understand their impact on transport of substances and to improve the watershed management. In particular, nutrient emissions from a hypothetical net cage aquaculture system located in the bay were investigated on half-year cycles. We observed a relevant impact on water quality for a tilapia production of 130 t y(-1); i.e. after 6 months' simulation we obtained around 8 μgP L(-1) and 6 μgP L(-1) at the source of emissions, for low and high water scenarios, respectively.
authors.affiliation: Technische Universität Berlin, Chair of Water Resources Management and Modeling of Hydrosystems, Gustav-Meyer-Allee 25, 13355 Berlin, Germany E-mail: elena.matta@wahyd.tu-berlin.de.
authors.forename: E
authors.initials: E
authors.lastname: Matta
authors.affiliation: Technische Universität Berlin, Chair of Water Quality Control, Straße des 17. Juni 135, 10623 Berlin, Germany.
authors.forename: F
authors.initials: F
authors.lastname: Selge
authors.affiliation: Technische Universität Berlin, Chair of Water Quality Control, Straße des 17. Juni 135, 10623 Berlin, Germany.
authors.forename: G
authors.initials: G
authors.lastname: Gunkel
authors.affiliation: Universidade Federal do Pernambuco, Av. Professor Morais Rego, Recife, Pernambuco 50670-901, Brazil.
authors.forename: K
authors.initials: K
authors.lastname: Rossiter
authors.affiliation: Technische Universität Berlin, Chair of Water Resources Management and Modeling of Hydrosystems, Gustav-Meyer-Allee 25, 13355 Berlin, Germany E-mail: elena.matta@wahyd.tu-berlin.de.
authors.forename: A
authors.initials: A
authors.lastname: Jourieh
authors.affiliation: Technische Universität Berlin, Chair of Water Resources Management and Modeling of Hydrosystems, Gustav-Meyer-Allee 25, 13355 Berlin, Germany E-mail: elena.matta@wahyd.tu-berlin.de.
authors.forename: R
authors.initials: R
authors.lastname: Hinkelmann
mesh_terms: D000818:Animals; D017756:Aquaculture; D061006:Bays / Q000737:chemistry*; D001938:Brazil; D005068:Eutrophication; D005399:Fishes / Q000502:physiology*; D005502:Food; D057446:Hydrodynamics; D060753:Water Quality / Q000592:standards*; D014881:Water Supply