Integrated multi-trophic aquaculture in a zero-exchange recirculation aquaculture system for marine fish and hydroponic halophyte production

verfasst von

Uwe Waller, Anne K. Buhmann, Anneliese Ernst, Verena Hanke, Andreas Kulakowski, Bert Wecker, Jaime Orellana, Jutta Papenbrock

Abstract

The aim of the study was to investigate the feasibility of nutrient recycling from a marine recirculating aquaculture system (RAS) for fish (European sea bass, Dicentrarchus labrax L.) through three salt-tolerant, halophyte plant species, Tripolium pannonicum (Jacq.) Dobrocz., Plantago coronopus L., and Salicornia dolichostachya (Moss.). Halophytes, illuminated by sunlight and supplemented with artificial light, were maintained in hydroponic cultures integrated in a RAS water treatment system operating at 16 psu salinity. During a 35-day experiment, 248 fishes gained 5.6 kg of weight. Total plant biomass production reached 23 kg in 14 m² hydroponic culture area. Gain of shoot biomass was 27, 18, and 60 g m⁻² day⁻¹ for T. pannonicum, P. coronopus, and S. dolichostachya, respectively. The plants retained 7 g phosphorus and 46 g nitrogen under the experimental conditions. This was equivalent to 9 % of the N and 10 % of the P introduced with the fish feed. The edible part of the harvested plant material was microbially safe and approved for human consumption. The coupling of production in a RAS–IMTA was tested as a feasible cascading production technology for sustainable aquaculture.

Organisationseinheit(en)

Institut für Botanik

Externe Organisation(en)

Hochschule für Technik und Wirtschaft des Saarlandes
Neomar GmbH
Pontificia Universidad Catolica de Valparaiso

Typ

Artikel

Journal

Aquaculture international

Band

23

Seiten

1473-1489

Anzahl der Seiten

17

ISSN

0967-6120

Publikationsdatum

08.03.2015

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Aquatische Wissenschaften, Agronomie und Nutzpflanzenwissenschaften

Ziele für nachhaltige Entwicklung

SDG 14 – Lebensraum Wasser

Elektronische Version(en)

https://doi.org/10.1007/s10499-015-9898-3 (Zugang: Geschlossen)