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Gutierrez MF, Andrade VS, Flores-Mendez DN, Frau D, Licursi M, Negro L. The relative importance of salinization in lowland stream zooplankton: Implications of the ecosystem nutrient status. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 912:169240. [PMID: 38072253 DOI: 10.1016/j.scitotenv.2023.169240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 10/30/2023] [Accepted: 12/07/2023] [Indexed: 12/21/2023]
Abstract
Salinization of aquatic systems is predicted to increase due to climate and land use changes. Nevertheless, community responses may be different according to the ecosystem characteristics and contextual scenarios. Small flowing waters are particularly vulnerable to salinization, which may impact on the biodiversity and ecosystem processes, but this remains unclear. We conducted a study in 42 lowland streams characterized by overall high nutrient levels along a salinity gradient between 2 and 160 g L-1 to analyze changes in zooplankton structural and functional metrics, and the grazing effects of zooplankton on phytoplankton affecting the energy transfer. Generalized additive models revealed that the analyzed metrics were relatively influenced by salinity, with factors related to trophic conditions playing an important role as well. Total abundance and biomass decreased along the salinity gradient while increasing at intermediate soluble reactive phosphorous concentrations (SRP) in the former and with a linear increase in the SRP in the latter case. Taxonomic richness decreased with salinity and dissolved inorganic nitrogen, with species replacement toward saline-tolerant ones according to the compositional and optimums analyses. In opposite, functional richness did not display any specific trend within the environmental gradients. This explains why zooplankton compositional changes were not reflected into shifts in the grazing pattern on phytoplankton, which was in turn driven by SRP and dissolved oxygen concentrations. Further research is a critical requirement in these poorly studied ecosystems for planning mitigation actions to the co-occurrence of eutrophication and salinization in a fast changing world.
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Affiliation(s)
- María Florencia Gutierrez
- Instituto Nacional de Limnología (INALI, CONICET-UNL), Ciudad Universitaria, 3000 Santa Fe, Argentina; Facultad de Bioquímica y Ciencias Biológicas - Escuela Superior de Sanidad "Dr. Ramón Carrillo" (UNL), Ciudad Universitaria, 3000 Santa Fe, Argentina.
| | - Victoria Soledad Andrade
- Instituto Nacional de Limnología (INALI, CONICET-UNL), Ciudad Universitaria, 3000 Santa Fe, Argentina
| | - Daniel Nino Flores-Mendez
- Instituto Nacional de Limnología (INALI, CONICET-UNL), Ciudad Universitaria, 3000 Santa Fe, Argentina
| | - Diego Frau
- Instituto Nacional de Limnología (INALI, CONICET-UNL), Ciudad Universitaria, 3000 Santa Fe, Argentina
| | - Magdalena Licursi
- Instituto Nacional de Limnología (INALI, CONICET-UNL), Ciudad Universitaria, 3000 Santa Fe, Argentina
| | - Leandro Negro
- Instituto Nacional de Limnología (INALI, CONICET-UNL), Ciudad Universitaria, 3000 Santa Fe, Argentina; Facultad de Bioquímica y Ciencias Biológicas - Escuela Superior de Sanidad "Dr. Ramón Carrillo" (UNL), Ciudad Universitaria, 3000 Santa Fe, Argentina
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The zooplankton of tropical streams: is it determinism or stochasticity that drives the spatial and temporal patterns in community structure? COMMUNITY ECOL 2022. [DOI: 10.1007/s42974-022-00099-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Andrade VS, Gutierrez MF, Gagneten AM. Effect of rainfall runoff from agricultural areas and seasonal crop practices on zooplankton community in Pampean streams, Argentina. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:41713-41724. [PMID: 35098456 DOI: 10.1007/s11356-021-18417-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Accepted: 12/27/2021] [Indexed: 06/14/2023]
Abstract
Extreme climatic events are considered one of the main consequences of climate change. In the Pampas region, Argentina, an intensification of rainfall is expected during the periods of maximum agrochemical application. This study assesses the main factors determining the zooplankton community attributes in three streams belonging to the agricultural Pampas region, Argentina, and the effect of rainfall and seasonal crop practices on the zooplankton community composition. Sampling campaigns were performed before and after three rainfall events during two seasonal crop practices: (1) soybean chemical fallow-sowing and corn vegetative growth-flowering, (2) soybean vegetative growth-grain filling and corn sowing. The runoff in agricultural areas affected the zooplankton community attributes and composition. The biological oxygen demand, turbidity, and conductivity were the main water quality variables affecting the zooplankton community attributes. The increase of these variables after rainfall or during pre-emergence crop practices favoured the zooplankton groups most tolerant to eutrophication such as Bdelloidea, Chydoridae, Moinidae, and Sididae. Factors such as rainfall and seasonal crop practices must be considered in environmental monitoring design.
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Affiliation(s)
- Victoria Soledad Andrade
- Laboratorio de Ecotoxicología, Departamento de Ciencias Naturales, Facultad de Humanidades Y Ciencias, Universidad Nacional del Litoral (UNL), Ciudad Universitaria, Santa Fe, 3000, Argentina.
- Consejo Nacional de Investigaciones Científicas Y Tecnológicas (CONICET), Nat. Route 168, Km 0, Santa Fe, 3000, Argentina.
| | - María Florencia Gutierrez
- Consejo Nacional de Investigaciones Científicas Y Tecnológicas (CONICET), Nat. Route 168, Km 0, Santa Fe, 3000, Argentina
- Instituto Nacional de Limnología (INALI-CONICET-UNL), Ciudad Universitaria, Santa Fe, 3000, Argentina
- Facultad de Bioquímica Y Ciencias Biológicas - Escuela Superior de Sanidad "Dr. Ramón Carrillo", UNL, Ciudad Universitaria, Santa Fe, 3000, Argentina
| | - Ana María Gagneten
- Laboratorio de Ecotoxicología, Departamento de Ciencias Naturales, Facultad de Humanidades Y Ciencias, Universidad Nacional del Litoral (UNL), Ciudad Universitaria, Santa Fe, 3000, Argentina
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Ramos EDA, Ramos Okumura AT, Silva AG, Pereira TL, Simões NR. Alpha and beta diversity of planktonic microcrustaceans are associated with environmental heterogeneity in the Frades River Basin, Brazil. STUDIES ON NEOTROPICAL FAUNA AND ENVIRONMENT 2021. [DOI: 10.1080/01650521.2021.1933702] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
| | | | | | - Tiago Leão Pereira
- Instituto Chico Mendes de Conservação da Biodiversidade, Porto Seguro, Brazil
| | - Nadson Ressyé Simões
- Universidade Federal do Sul da Bahia/ Instituto Federal da Bahia, Porto Seguro, Brazil
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Andrade VS, Gutierrez MF, Reno U, Popielarz A, Gervasio S, Gagneten AM. Synergy between glyphosate and cypermethrin formulations on zooplankton: evidences from a single-specie test and a community mesocosm experiment. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:26885-26894. [PMID: 33495956 DOI: 10.1007/s11356-021-12619-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Accepted: 01/18/2021] [Indexed: 06/12/2023]
Abstract
Agrochemicals can reach freshwater bodies by drift, leaching, or runoff, where they constitute complex mixtures. Given that glyphosate and cypermethrin are within the most worldwide used pesticides, they are likely to co-occur in freshwater bodies. The aim of this study was to analyze the interaction between glyphosate and cypermethrin formulations on the cladoceran Ceriodaphnia dubia (Richard 1894) through an acute toxicity test and on a zooplankton assemblage through a mesocosm (30 L) experiment. The 24-h LC50 of both isolated pesticides and their equitoxic mixture was obtained for C. dubia. The mesocosm was performed by exposing a zooplankton assemblage to both pesticides isolated and in combination. The acute toxicity of the equitoxic mixture in C. dubia was 3 and 4 times higher than the isolated toxicity of glyphosate and cypermethrin, respectively. The total toxic units of the mixture were 0.53, indicating a synergistic interaction. In the mesocosm experiment, both pesticides also interacted causing a synergistic negative effect in Cladocera and Copepoda abundances. No interactions between pesticides were found for Rotifera; therefore, the mixture effect was considered additive. It is suggested to continue analyzing pesticide mixture effects on the basis of complementary scales of analysis to reach more environmentally relevant information.
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Affiliation(s)
- Victoria Soledad Andrade
- Laboratorio de Ecotoxicología. Departamento de Ciencias Naturales, Facultad de Humanidades y Ciencias, Universidad Nacional del Litoral (UNL), 3000, Santa Fe, Argentina.
- Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), 3000, Santa Fe, Argentina.
| | - María Florencia Gutierrez
- Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), 3000, Santa Fe, Argentina
- Instituto Nacional de Limnología (CONICET - UNL), 3000, Santa Fe, Argentina
- Facultad de Bioquímica y Ciencias Biológicas - Escuela Superior de Sanidad "Dr. Ramón Carrillo" (UNL), 3000, Santa Fe, Argentina
| | - Ulises Reno
- Laboratorio de Ecotoxicología. Departamento de Ciencias Naturales, Facultad de Humanidades y Ciencias, Universidad Nacional del Litoral (UNL), 3000, Santa Fe, Argentina
- Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), 3000, Santa Fe, Argentina
| | - Andrea Popielarz
- Instituto Nacional de Tecnología (INTEC - CONICET - UNL), 3000, Santa Fe, Argentina
| | - Susana Gervasio
- Instituto Nacional de Tecnología (INTEC - CONICET - UNL), 3000, Santa Fe, Argentina
| | - Ana María Gagneten
- Laboratorio de Ecotoxicología. Departamento de Ciencias Naturales, Facultad de Humanidades y Ciencias, Universidad Nacional del Litoral (UNL), 3000, Santa Fe, Argentina
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