2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
5/27/2021 | 2:00 PM - 3:30 PM | THE IMPORTANCE OF THE SUBSTRATE SELECTION IN MITIGATION WETLANDS: A GLOBAL PERSPECTIVE | Virtual Platform
THE IMPORTANCE OF THE SUBSTRATE SELECTION IN MITIGATION WETLANDS: A GLOBAL PERSPECTIVE
As Nature Based Solution, mitigation wetlands not only have to improve water quality, but also should provide ecosystem services such as to be a refuge and source of energy for diverse organisms. The substrate type is a key design element in wetlands performance, but it is also essential for the growth and development of vegetation and microorganisms and, therefore, for approaching to natural wetlands structure and function. Our goal was to analyze the effect of different substrates; gravel, gravel + soil (30%), and gravel + biochar (10%); on: i) plant development and tissue nutrient content, ii) density and activity of microbial communities, and iii) N and P removal rates, during the first 16 months of operation of a pilot plant treating agricultural water. Gravel + soil presented the greatest plant growth and development with the highest N and P content, the highest microbial density and activity and the greatest N removal capacity. In the opposite extreme, the conventionally used gravel substrate. The observed responses for the gravel + biochar were variable through time, and intermediate between the other two substrates. The results suggest substrate type being crucial for wetlands functioning.
- Nutrients
- Biogeochemistry
- Ecosystem
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Presenters/Authors
Mercedes Guerrero-Brotons
(), Department of Ecology and Hydrology, University of Murcia, 30100 Murcia, Spain., mariamercedes.guerrero@um.es;
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Carolina Díaz-García
(), Department of Agricultural Engineering, E.T.S.I.A. Technical University of Cartagena, 30202 Cartagena, Spain, carolina.diaz@upct.es;
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José Álvarez-Rogel
(), Department of Agricultural Engineering, E.T.S.I.A. Technical University of Cartagena, 30202 Cartagena, Spain, Jose.Alvarez@upct.es;
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Nùria Perujo
(), Catalan Institute for Water Research (ICRA), Carrer Emili Grahit 101, 17003 Girona, Spain; University of Girona, Plaça de Sant Domènec 3, 17004 Girona, Spain., nuria.perujo.buxeda@gmail.com;
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Anna M. Romaní
(), Institute of Aquatic Ecology, University of Girona, Campus de Montilivi, 17003 Girona, Spain., anna.romani@udg.edu;
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Rosa Gómez
(), Department of Ecology and Hydrology, University of Murcia, 30100 Murcia, Spain., rgomez@um.es;
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