dc.contributor.author | Solagaistua Zabala, Libe | |
dc.contributor.author | De Guzmán Martínez, Miren Ioar | |
dc.contributor.author | Barrado, Miren | |
dc.contributor.author | Mijangos Treviño, Leire | |
dc.contributor.author | Etxebarria Loizate, Nestor | |
dc.contributor.author | García-Baquero Moneo, Gonzalo | |
dc.contributor.author | Larrañaga Arrizabalaga, Aitor | |
dc.contributor.author | Von Schiller Calle, Daniel Gaspar | |
dc.contributor.author | Elosegi Irurtia, Arturo | |
dc.date.accessioned | 2018-12-11T11:21:20Z | |
dc.date.available | 2018-12-11T11:21:20Z | |
dc.date.issued | 2018-10 | |
dc.identifier.citation | Aquatic Toxicology 203 : 159-171 (2018) | es_ES |
dc.identifier.issn | 0166-445X | |
dc.identifier.issn | 1879-1514 | |
dc.identifier.uri | http://hdl.handle.net/10810/30246 | |
dc.description.abstract | The amount of pollutants and nutrients entering rivers via point sources is increasing along with human population and activity. Although wastewater treatment plants (WWTPs) greatly reduce pollutant loads into the environment, excess nutrient loading is a problem in many streams. Using a Community and Ecosystem Function (CEF) approach, we quantified the effects of WWTP effluent on the performance of microbes and detritivores associated to organic matter decomposition, a key ecosystem process. We measured organic matter breakdown rates, respiration rates and exo-enzymatic activities of aquatic microbes. We also measured food consumption and growth rates and RNA to body-mass ratios (RNA:BM) of a dominant amphipod Echinogammarus berilloni. We predicted responses to follow a subsidy-stress pattern and differences between treatments to increase over time. To examine temporal effects of effluent, we performed a laboratory microcosm experiment under a range of effluent concentrations (0, 20, 40, 60, 80 and 100%), taking samples over time (days 8, 15 and 30; 4 and 10 replicates to assess microbe and detritivore performance respectively, per treatment and day). This experiment was combined with a field in situ Before-After Control-Impact Paired (BACIP) experiment whereby we added WWTP effluent poured (10 L s(-1) during 20-40 min every 2 h) into a stream and collected microbial and detritivore samples at days 8 and 15 (5 and 15 replicates to assess the microbe and detritivore performance respectively, per period, reach and sampling day). Responses were clearer in the laboratory experiment, where the effluent caused a general subsidy response. Field measures did not show any significant response, probably because of the high dilution of the effluent in stream water (average of 1.6%). None of the measured variables in any of the experiments followed the predicted subsidy-stress response. Microbial breakdown, respiration rates, exo-enzymatic activities and invertebrate RNA:BM increased with effluent concentrations. Differences in microbial respiration and exo-enzymatic activities among effluent treatments increased with incubation time, whereas microbial breakdown rates and RNA:BM were consistent over time. At the end of the laboratory experiment, microbial respiration rates increased 156% and RN:BM 115% at 100% effluent concentration. Detritivore consumption and growth rates increased asymptotically, and both responses increased with by incubation time. Our results indicate that WWTP effluent stimulates microbial activities and alters detritivore performance, and stream water dilution may mitigate these effects. | es_ES |
dc.description.sponsorship | This work has been supported by the EU7th Framework Programme Funding under Grant agreement no. 603629-ENV-2013-6.2.1-Globaqua. We also acknowledge financial support in terms of pre doctoral grants from the University of the Basque Country UPV/EHU (L. Solagaistua) and the Basque Government (I. de Guzman, L. Mijangos). The manuscript benefited greatly from the valuable comments of John Kominoski and two anonymous referees. Also SGIker technical and human support (UPV/EHU, MICINN, GV/EJ, ESF) is gratefully acknowledged. | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | Elsevier | es_ES |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ | * |
dc.subject | WWTP | es_ES |
dc.subject | effluent concentration | es_ES |
dc.subject | community-ecosystem function | es_ES |
dc.subject | microbes | es_ES |
dc.subject | microbes | es_ES |
dc.subject | echinogammarus berilloni | es_ES |
dc.subject | subsidy-stress | es_ES |
dc.subject | time | es_ES |
dc.subject | gammarus-fossarum crustacea | es_ES |
dc.subject | eucalyptus-globulus plantations | es_ES |
dc.subject | leaf-litter decomposition | es_ES |
dc.subject | stream eutrophication | es_ES |
dc.subject | endocrine disruptors | es_ES |
dc.subject | nitrogen deposition | es_ES |
dc.subject | community structure | es_ES |
dc.subject | multiple stressors | es_ES |
dc.subject | atlantic streams | es_ES |
dc.subject | trophic statu | es_ES |
dc.title | Testing Wastewater Treatment Plant Effluent Effects on Microbial and Detritivore Performance: a Combined Field and Laboratory Experiment | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.holder | Under a Creative Commons license
Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) | es_ES |
dc.rights.holder | Atribución-NoComercial-SinDerivadas 3.0 España | * |
dc.relation.publisherversion | https://www.sciencedirect.com/science/article/pii/S0166445X18305423?via%3Dihub | es_ES |
dc.identifier.doi | 10.1016/j.aquatox.2018.08.006 | |
dc.departamentoes | Biología vegetal y ecología | es_ES |
dc.departamentoes | Química analítica | es_ES |
dc.departamentoeu | Kimika analitikoa | es_ES |
dc.departamentoeu | Landaren biologia eta ekologia | es_ES |