Invertebrate community responses to emerging water pollutants in Iberian river basins

Castro-Català, Núria De; Muñoz, Isabel; Armendáriz, Laura Cecilia; Campos, Bruno; Barceló, Damià; López-Doval, Júlio C.; Pérez, Sandra; Petrović, Mira; Picó, Yolanda; Riera, J.

doi:10.1016/j.scitotenv.2014.06.110

Cited by 37 publications

(19 citation statements)

References 59 publications

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“…De Castro-Català et al (2015) have found that PhACs and EDCs from water in the same rivers are the most likely chemical families related to benthic invertebrate responses. Regarding water toxicity, Kuzmanovic et al (2015) have also identified OPs insecticides and alkylphenolic compounds (EDCs) as the main contributors of toxicity for D. magna in these four basins.…”

Section: Discussionmentioning

confidence: 99%

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Ecotoxicity of sediments in rivers: Invertebrate community, toxicity bioassays and the toxic unit approach as complementary assessment tools

Castro-Català

Kuzmanović

Roig

et al. 2016

Science of The Total Environment

109

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The determination of the real toxicity of sediments in aquatic ecosystems is challenging and necessary for an appropriate risk assessment. Different approaches have been developed and applied over the last several decades. Currently, the joint implementation of chemical, ecological and toxicological tools is recommended for an appropriate and successful toxicity risk assessment. We chose the combination of the toxic unit approach with acute pore water tests (Vibrio fischeri, Pseudokirchneriella subcapitata and Daphnia magna) and whole-sediment exposure tests (V. fischeri, Chironomus riparius), together with invertebrate community composition (multivariate analyses) to detect short and long-term responses of the organisms in four rivers of the Iberian Peninsula. High toxicity was detected in three sites (the downstream sites of the Llobregat and the Júcar, and the most upstream site of the Ebro). We identified organophosphate insecticides and metals as the main variables responsible for this toxicity, particularly in the whole-sediment tests. In particular, chlorpyrifos was mostly responsible for the toxicity (TUs) of D. magna, coinciding with the C. riparius mortality (long-term toxicity) in the mentioned sites, and copper was the main pollutant responsible for the short-term toxicity of P. subcapitata. The combination of the different approaches allowed us to detect ecotoxicological effects in organisms and identify the main contributors to the toxicity in these multi-stressed rivers.

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Section: Discussionmentioning

confidence: 99%

“…The four basins flow through areas with high population, particularly the middle and lower courses of the rivers. Important agricultural areas and industrial clusters are located in the watersheds, which depend on the surface and groundwater resources and water transfers (De Castro-Català et al, 2015).…”

Section: Study Area and Samplingmentioning

confidence: 99%

Ecotoxicity of sediments in rivers: Invertebrate community, toxicity bioassays and the toxic unit approach as complementary assessment tools

Castro-Català

Kuzmanović

Roig

et al. 2016

Science of The Total Environment

109

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“…The identification was at species level for almost all taxa -including Oligochaeta -with the exception of the Chironomids, which were identified at the genus level, and the Phylum Nematoda. Abundances were referred to the basis of sediment surface area (De Castro-Català et al, 2015).…”

Section: Macroinvertebrate Samplingmentioning

confidence: 99%

Ecotoxicological risk assessment of chemical pollution in four Iberian river basins and its relationship with the aquatic macroinvertebrate community status

Kuzmanović

López-Doval

Castro-Català

et al. 2016

Science of The Total Environment

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Ecotoxicological risk assessment of chemical pollution in four Iberian river basins (Llobregat, Ebro, Júcar and Guadalquivir) was performed. The data set included more than 200 emerging and priority compounds measured at 77 sampling sites along four river basins studied. The toxic units (TU) approach was used to assess the risk of individual compounds and the concentration addition model (CA) to assess the site specific risk. Link between chemical pollution and aquatic macroinvertebrate communities in situ was examined by using four biological indexes; SPEAR ("Species at Risk Index") as the indicator of decline of sensitive species in relation to general organic (SPEARorganic) and pesticides (SPEARpesticides) pollution; and Shannon and Margalef biodiversity indexes. The results of the study suggested that organic chemicals posed the risk of acute effects at 42% of the sampling sites and the risk of chronic effects at all the sites. Metals posed the acute risk at 44% of the sites. The main drivers of the risk were mainly pesticides and metals. However, several emerging contaminants (e.g. the antidepressant drug sertraline and the disinfectant triclosan) were contributing to the chronic effects risk. When risk associated with metals and organic chemicals was compared, the latter dominated in 2010, mainly due to the presence of highly toxic pesticides, while metals did in 2011. Compounds that are not regulated on the European level were posing the risk of chronic effects at 23% of the sites. The decline of sensitive macroinvertebrate taxa expressed in terms of SPEAR index was correlated with the increase of toxic stress related to organic compounds Biodiversity indexes were negatively correlated with the metals and the urban land use type in the catchment.

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“…A tiered approach, involving ecological indexes, bioassays, and improved chemical screening, has been suggested as a good option when there is evidence of ecosystem impairment and it is necessary to discriminate between the effects of toxic substances or other environmental stressors (Hein et al, 2010). Several studies have tested this tiered approach for different rivers, with successful identification of the main stressors impairing the biological community (Damásio et al, 2007(Damásio et al, , 2011Wolfram et al, 2012;De Castro-Català et al, 2015).…”

Section: Discussionmentioning

confidence: 99%

Ecological and toxicological responses in a multistressor scenario: Are monitoring programs showing the stressors or just showing stress? A case study in Brazil

López-Doval

Meirelles

Cardoso-Silva

et al. 2016

Science of The Total Environment

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Invertebrate community responses to emerging water pollutants in Iberian river basins

Cited by 37 publications

References 59 publications

Ecotoxicity of sediments in rivers: Invertebrate community, toxicity bioassays and the toxic unit approach as complementary assessment tools

Ecotoxicity of sediments in rivers: Invertebrate community, toxicity bioassays and the toxic unit approach as complementary assessment tools

Ecotoxicological risk assessment of chemical pollution in four Iberian river basins and its relationship with the aquatic macroinvertebrate community status

Ecological and toxicological responses in a multistressor scenario: Are monitoring programs showing the stressors or just showing stress? A case study in Brazil

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