Distinct responses of Copepoda and Cladocera diversity to climatic, environmental, and geographic filters in the La Plata River basin

Perbiche‐Neves, Gilmar; Saito, Victor S.; Simões, Nadson Ressyé; Debastiani-Júnior, José Roberto; Naliato, Danilo Augusto de Oliveira; Nogueira, Marcos Gomes

doi:10.1007/s10750-018-3722-9

Cited by 21 publications

(19 citation statements)

References 59 publications

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“…The use of zooplankton species as biological indicators can provide important information on current and past processes, such as changes in biological relationships and in the physical and chemical properties of water (Perbiche-Neves et al, 2019). In this study, the TP and TSS concentrations and phytoplankton abundance were most associated with the fluctuation of zooplankton in the reservoirs.…”

Section: Discussionmentioning

confidence: 80%

“…Rotifers were the organisms that most contributed to the total species richness of the zooplankton. The high diversity of this group in reservoirs has been a recurring pattern in Brazil and is mainly attributed to the opportunistic characteristics of this group (e.g., wide food spectrum, high population turnover) (Takahashi et al, 2009;De-Carli et al, 2018;Picapedra et al, 2020). In turn, great occurrences and abundances of cladocerans (especially B. hagmanni and C. cornuta) and juvenile copepods can be an important indicator of the beginning of the eutrophication process in these reservoirs.…”

Section: Discussionmentioning

confidence: 99%

“…In relation to copepods, the co-occurrence of T. minutus and T. decipiens, with a higher occurrence of T. decipiens, may indicate a transition between mesotrophic and eutrophic conditions in reservoirs. T. minutus is more frequent in oligotrophic waters, whereas it is replaced by T. decipiens in eutrophic waters (Nogueira et al, 2002;Perbiche-Neves et al, 2016). In mesotrophic lakes, both species would be found together or in a seasonally alternating pattern (Sartori et al, 2009;Serafim-Júnior et al, 2016).…”

Section: Discussionmentioning

confidence: 99%

“…During flowering events, Cyanobacteria can form large colonies or clusters that may interfere directly with the filtration apparatus of zooplankton (De-Mott et al, 2001). In this way, powerful mechanisms, such as the predominance of Cyanobacteria, can affect the structure of zooplankton communities, making zooplankton key to understanding changes in aquatic ecosystems, especially in understanding how these changes are propagated along the food chain (Silva et al, 2014;Perbiche-Neves et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

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Zooplankton communities and their relationship with water quality in eight reservoirs from the midwestern and southeastern regions of Brazil

Picapedra

Fernandes²,

Baumgartner

et al. 2021

Braz. J. Biol.

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Zooplankton are widely recognised as being regulated primarily by predators and food availability. In reservoirs, the quantity and quality of food resources are generally affected by the characteristics of the water, which in turn are controlled by the flow pulse generated by operation of the dams. In this study, we investigated the relationship between zooplankton, water quality and food availability (phytoplankton) in eight hydroelectric reservoirs located in Brazil. Samples were collected during the rainy and dry periods between 2008 and 2009. In general, the reservoirs exhibited mesotrophic conditions and Cyanobacteria were the predominant phytoplankton. The results showed that the rotifers Kellicottia bostoniensis, Hexarthra mira, Keratella spp., and Polyarthra vulgaris were present, indicating nutrient-rich environments. In addition, the copepod Thermocyclops decipiens occurred in eutrophic environments. In contrast, the cladoceran Daphnia gessneri and copepod Notodiaptomus henseni were considered indicators of more desirable water quality, owing to their relationship with waters with lower levels of nutrients and suspended solids. The results support the use of these organisms as a useful tool for understanding changes in water quality and in the ecosystem processes involved.

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Section: Discussionmentioning

confidence: 80%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Zooplankton communities and their relationship with water quality in eight reservoirs from the midwestern and southeastern regions of Brazil

Picapedra

Fernandes²,

Baumgartner

et al. 2021

Braz. J. Biol.

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“…An important aspect of this study is that we analyze the major zooplankton groups (rotifers, cladocerans, and copepods) together; an approach that incorporates an important component: the community composition which results from biotic interactions between different zooplankton groups (Eskinazi-Sant'Anna et al, 2013;Beaver et al, 2018). Therefore, zooplankton communities have potential value as indicators of various system properties, including trophic conditions (García-Chicote, Armengol & Rojo, 2018;Perbiche-Neves et al, 2019). Within this context, the aim of this study was to analyze, over 16 consecutive years, the variability in the zooplankton communities of two cascade reservoirs with different operational modes (storage and run-of-river) located on the Iguaçu River.…”

Section: Introductionmentioning

confidence: 99%

A long-term study on zooplankton in two contrasting cascade reservoirs (Iguaçu River, Brazil): effects of inter-annual, seasonal, and environmental factors

Picapedra

Fernandes

Taborda

et al. 2020

PeerJ

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Background In reservoirs, zooplankton strongly interact with the physical and chemical characteristics of water, and this interaction is mainly influenced by climate variation and the different methods used to manage the dam water level. Therefore, the aim of this study was to evaluate how the distinct operating modes of two cascade reservoirs affected the richness, abundance, and composition of zooplankton, both spatially (intra and inter-reservoirs) and temporally (annual and seasonal). In this study, the upstream reservoir (Salto Santiago) operates using the storage method, with a water retention time (WRT) of 51 days, whereas the downstream reservoir (Salto Osório) operates using the run-of-river method, with a WRT of 16 days. Methods Zooplankton samples were collected for 16 consecutive years from the two reservoirs located on the Iguaçu River, Brazil. A total of 720 samples were collected. Four-way ANOVAs were used to determine the differences in richness and abundance of the zooplankton among years, periods, reservoirs, and environments. Multidimensional non-metric scaling (NMDS) and an analysis of similarities (ANOSIM) were used to describe similarity patterns in species composition. Finally, a canonical correspondence analysis (CCA) was used to select the environmental predictors that best explained the variation in zooplankton abundance data. Results We identified a total of 115 taxa in this study, and rotifers were the richest group. In contrast, the copepods were the most abundant. The four-way ANOVA results showed significant differences in the species richness and abundance of the zooplankton among years, periods, reservoirs, and environments. The NMDS ordination and ANOSIM test indicated that the largest differences in zooplankton species composition were annual and seasonal differences. Finally, the CCA showed that these differences were mainly associated with changes in water transparency, temperature, and the chlorophyll a, phosphorus, and total dissolved solids concentrations. Discussion Inter-annual changes in zooplankton species composition showed that over time, large filters-feeders (e.g., large daphinids and calanoid copepods) were replaced by small cladocerans (e.g., bosminids) and generalist rotifers. The highest species richness was associated with the fluvial environment, whereas the highest abundance was associated with the transitional and lacustrine reservoir environments. Variations in water temperature, nutrients, and food availability explained the annual and seasonal changes in community structure, whereas variations in the water flow characteristics of the environments explained the longitudinal changes in the richness and abundance of zooplankton in reservoirs. The differences in zooplankton structure between the two reservoirs can be explained by the functional differences between the two systems, such as their WRTs and morphometrics.

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Effects of warming on the structure of aquatic communities in tropical bromeliad microecosystems

Progênio

Antiqueira

Oliveira

et al. 2023

Ecology and Evolution

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Distinct responses of Copepoda and Cladocera diversity to climatic, environmental, and geographic filters in the La Plata River basin

Cited by 21 publications

References 59 publications

Zooplankton communities and their relationship with water quality in eight reservoirs from the midwestern and southeastern regions of Brazil

Zooplankton communities and their relationship with water quality in eight reservoirs from the midwestern and southeastern regions of Brazil

A long-term study on zooplankton in two contrasting cascade reservoirs (Iguaçu River, Brazil): effects of inter-annual, seasonal, and environmental factors

Effects of warming on the structure of aquatic communities in tropical bromeliad microecosystems

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