Functional Structure of River Ecosystems: Retrospective of the Development of Contemporary Concepts (Review)

Baturina, N. S.

doi:10.1134/s1995082919010048

Cited by 5 publications

(2 citation statements)

References 23 publications

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“…Since the dendritic structure of rivers was recognised, the incorporation of this dimension as a driver of biodiversity in lotic ecosystems has been a persistent aim (Altermatt, 2013; Baturina, 2019; Carrara et al., 2012; Harvey & Altermatt, 2019; Henriques‐Silva et al., 2019; Humphries, Keckeis, & Finlayson, 2014; Vannote et al., 1980). Historically, the Strahler order classes (Strahler, 1957) were used to describe this structure, separating headwaters, mid‐reaches, and downstream communities (Altermatt, 2013).…”

Section: Discussionmentioning

confidence: 99%

“…grazers, shredders, and predators) associated with the gradual change in nutrient cycling from headwaters to lower reaches (Vannote, Minshall, Cummins, Sedell, & Cushing, 1980). The river continuum concept became a starting point for the development of alternative models based on continuum, discrete, and hierarchical approaches in which the role of the riverscape has been progressively incorporated (see Baturina, 2019 for a review of models). In this context, the dendritic structure of river ecosystems has been shown to have the largest effect on biodiversity patterns compared with other community spatial arrangements (Arim et al, 2016;Bertuzzo et al, 2011Bertuzzo et al, , 2016Campbell Grant, Lowe, & Fagan, 2007;Carrara et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

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Community isolation drives lower fish biomass and species richness, but higher functional evenness, in a river metacommunity

et al. 2020

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1. The flow of individuals among communities and their interactions with local environmental filters are increasingly recognised as determinants of biodiversity patterns in riverine ecosystems. Both incoming dispersers and local conditions are expected to systematically change along connectivity gradients from headwaters to downstream communities. However, the interplay between isolation-centrality gradients and environmental conditions as determinants of biodiversity structure and function has seldom been considered. 2. Here, we represented the dendritic structure of the Negro River basin riverscape (Uruguay) in a directed graph quantifying the isolation-centrality of each river section and evaluated the direct and indirect pathways by which riverscape structure and environmental local drivers determine fish community assembly. 3. Fish communities (n = 58) were sampled following a stratified sampling design that properly represents this isolation-centrality connectivity gradient through the riverscape. In each community, fish abundance, biomass, richness, and functional diversity were estimated, and the direct and indirect hypothesised connections among them were evaluated with structural equation models. 4. We showed that the range of isolation among river sections determines a 2-fold, 5-fold, and 25-fold variation in total fish richness, abundance, and biomass, respectively. Additionally, isolation-centrality was positively associated with local temperature and conductivity, while negatively related to local depth. These variables and taxonomic richness accounted for most of the variation in total fish biomass (81%) herein used as measurement of ecosystem function. Local fish abundance was negatively and positively associated with functional evenness and taxonomic richness, respectively. Furthermore, once the effect of isolation on biomass and richness was accounted for, an effect of diversity on biomass became evident.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Community isolation drives lower fish biomass and species richness, but higher functional evenness, in a river metacommunity

et al. 2020

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Zooplankton as an indicator of hydrological connectivity of the main channel and the floodplain in a large river system

Yanygina,

Burmistrova,

Kotovshchikov

et al. 2023

Hydrobiologia

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The connectivity of the river–floodplain system during floods plays a decisive role in organisms/matter contribution to the ecosystems of large lowland rivers. We hypothesized that the direction of water-level trends during flood was crucial for zooplankton release from the floodplain into the river channel. The seven-year study of zooplankton in the large plain Ob river suggest that at the inundated floodplain even a slight water level fall brings to plankton release from the floodplain into the river thus causing its abundance boom in the main channel. At water-level stabilization or rise, zooplankton communities of floodplain become isolated from the channel that ceases the recruits’ inflow from the floodplain and brings to a sharp drop in number of river zooplankton. Therefore, it is necessary to take into account dynamics trends (i.e., fall or rise) in river water level when assessing zooplankton density in large lowland rivers. The analysis of such trends should become the basis for predicting of river zooplankton abundance and assessing changes in feeding conditions of fish during the growing season.

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Zooplankton Distribution in the Middle Volga River Reservoirs in Areas Under the Influence of Tributaries

Podshivalina

2021

Inland Water Biol

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Functional Structure of River Ecosystems: Retrospective of the Development of Contemporary Concepts (Review)

Cited by 5 publications

References 23 publications

Community isolation drives lower fish biomass and species richness, but higher functional evenness, in a river metacommunity

Community isolation drives lower fish biomass and species richness, but higher functional evenness, in a river metacommunity

Zooplankton as an indicator of hydrological connectivity of the main channel and the floodplain in a large river system

Zooplankton Distribution in the Middle Volga River Reservoirs in Areas Under the Influence of Tributaries

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