Zooplankton in a continuous waterscape: environmental and spatial factors shaping spring zooplankton community structure in a large canyon reservoir at the tropic of cancer

Han, Bo‐Ping; Liu, Ping; Niu, Haiyu; Yang, Yang; Lin, Qiuqi; Papa, Rey Donne S.; Dumont, Henri J.

doi:10.1007/s10750-020-04380-1

Cited by 9 publications

(3 citation statements)

References 72 publications

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“…It has been shown that even relatively small but numerous engineered structures built by beavers may profoundly impact the carbon budget of a river network (Wohl 2013), but we do not have a convenient framework to anticipate which are the driving factors (residence time, nutrient and carbon levels, temperature, hydrodynamics, and possibly others) that will promote the existence of hot spots for DOM changes along the fluvial network. The behavior of the river water entering reservoirs may be an important factor in the time domain since it deeply affects the development and functioning of the reservoir bacterial and planktonic communities (Šimek et al 2011;Rizo et al 2020).…”

Section: Global Significance Of River-reservoir Boundary Hot Spotsmentioning

confidence: 99%

Dissolved organic matter spectroscopy reveals a hot spot of organic matter changes at the river–reservoir boundary

2021

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Section: Global Significance Of River-reservoir Boundary Hot Spotsmentioning

confidence: 99%

Dissolved organic matter spectroscopy reveals a hot spot of organic matter changes at the river–reservoir boundary

2021

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“…Zooplankton is mainly responsible for secondary productivity in the water column, representing a trophic link between primary producers and higher trophic levels such as fish. Changes in the structure of this community may alter ecosystem function (Deosti et al, 2021; Rizo et al, 2020). Studies have pointed out the effects of damming on these communities (Shen et al, 2022; Souza et al, 2019), such as reduced species richness and increased density of resistant species (Picapedra et al, 2020) and altered species distribution (Schmidt et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Taxonomic and functional homogenisation of zooplankton after river damming in Central Brazil

Silva,

Colares,

Palheta

et al. 2023

Freshwater Biology

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Dams on large rivers alter hydrodynamics, reduce seasonal variability and environmental heterogeneity, and have significant effects on river ecology. They produce less diverse environments and alter the community composition. Knowledge about the effects of dams on functional aspects of zooplankton communities is scarce. Thus, our main goal was to investigate how the zooplankton community of the Tocantins River in central Brazil changed after the implementation of the Estreito hydroelectric power plant dam. We explored the relationships of taxonomic and functional beta diversity in the zooplankton community, with the seasonality, flooding river phases and limnological variables. To answer our goals, we collected water samples 1 year before plant construction and 5 months after dam enclosure. To investigate how the environment changed after river damming, we conducted a principal component analysis. We calculated taxonomic and functional beta diversity using the Jaccard pairwise dissimilarity index for presence–absence data. To identify which functional traits were associated with each river phase and season, we firstly calculated the community weighted mean (CWM) for each trait. Secondly, we partitioned beta diversity into turnover and nestedness components. To investigate patterns of taxonomic and functional beta diversity and its turnover and nestedness components, we additionally used a series of six linear mixed models. Our results indicated that the limnological characteristics of the river changed after damming. Taxonomic and functional turnover was higher during the pre‐inundation phase, and this phase also showed greater limnological heterogeneity in comparison to the post‐inundation phase. We observed a strong seasonal dynamic in taxonomic turnover, with high turnover during the dry season. However, these seasonal dynamics disappeared after river damming. We demonstrated that the patterns of taxonomic and functional beta diversities were influenced by limnological variables and seasonal dynamics, which resulted in reduced variability in both species composition and functional characteristics after the implementation of the reservoir. This study emphasises the importance of variations in annual flow regimes in lotic ecosystems. We also showed an association between environmental heterogeneity patterns the high taxonomic and functional diversity of zooplankton communities.

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“…Zooplankton is the crucial linking of the primary producer to high trophic organisms, which is recognized as essential information in understanding pelagic food webs dynamics (Fenchel, 1988;Eddy et al, 2021;Peng et al, 2021). Because of their small size and short lifecycle, zooplankton is very sensitive to environmental changes and has a wide distribution in aquatic ecosystems (Whitman et al, 2004;García-Comas et al, 2014;Hessen et al, 2019;Rizo et al, 2020). These characteristics make zooplankton become a good indicator for water quality monitoring and environmental change assessment in aquatic ecosystems (García-Comas et al, 2014;Lee et al, 2021;Venello et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Zooplankton Size Structure in Relation to Environmental Factors in the Xiangxi Bay of Three Gorges Reservoir, China

Cai

et al. 2022

Front. Ecol. Evol.

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Body size is sensitive to environmental changes and one of the fundamental traits linking ecological functions. Size structure has been suggested as a useful indicator for environmental monitoring and assessment in aquatic ecosystems. However, the organisms’ size structure and the relationship with environmental factors remain seldom addressed in reservoir ecosystems. In this study, we investigated the size spectrum, size diversity of the zooplankton and their relationships with environmental conditions across nitrogen and phosphorus gradients in the Xiangxi Bay of Three Gorges Reservoir, China. We further tested the hypotheses that how nutrient and water temperature affect zooplankton size structure: nutrients indirectly affect zooplankton size spectrum and size diversity via phytoplankton (H1); increasing water temperature will reduce size diversity and result in a steeper size spectrum (H2); size diversity is a more robust metric indicating environment changes than the size spectrum in high dynamic ecosystems (H3). We found that both the size spectrum and size diversity showed high spatiotemporal dynamics. The size spectrum ranged from −3.373 to −0.984. The size diversity ranged from 0.631 to 3.291. Spatially, the lowest values of the size spectrum and size diversity were observed in the upstream areas of Xiangxi Bay, where nitrogen and phosphorus concentrations are high and low, respectively. And in temporal dynamics, lower values of the size spectrum and size diversity were generally observed in March and April. Further analyses based on the structural equation model (SEM) found a clear pathway revealing that nutrient variables affect the zooplankton abundance and size structure, supporting hypothesis H1. That is, dissolved inorganic nitrogen had an indirect effect on the zooplankton abundance, size spectrum, and size diversity by influencing the concentration of phytoplankton chlorophyll a. In addition, results of SEM suggested that increased water temperature had a significant negative effect on the size diversity but had non-significant effects on zooplankton abundance and size spectrum. This finding suggests that size diversity is a reliable and useful index in measuring the zooplankton size structure in reservoir ecosystems with high dynamics, which may have a wide application in environmental monitoring and assessment, especially for complex and dynamic aquatic ecosystems.

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Zooplankton in a continuous waterscape: environmental and spatial factors shaping spring zooplankton community structure in a large canyon reservoir at the tropic of cancer

Cited by 9 publications

References 72 publications

Dissolved organic matter spectroscopy reveals a hot spot of organic matter changes at the river–reservoir boundary

Dissolved organic matter spectroscopy reveals a hot spot of organic matter changes at the river–reservoir boundary

Taxonomic and functional homogenisation of zooplankton after river damming in Central Brazil

Zooplankton Size Structure in Relation to Environmental Factors in the Xiangxi Bay of Three Gorges Reservoir, China

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