Crowded waters: short-term response of invertebrate drift to water abstraction

González, José Manuel; Recuerda, María; Elosegi, Arturo

doi:10.1007/s10750-018-3620-1

Cited by 14 publications

(11 citation statements)

References 46 publications

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“…In general, chironomids do not display a consistent drift behavior in relation to flow conditions (Hayes, Goodwin, Shearer, & Hicks, ). Observations are site‐specific and range from “very sensitive to flow fluctuations” in a regulated stream (Irvine & Henriques, ) to “tolerant to flow fluctuations” (González, Recuerda, & Elosegi, ). Hay, Franti, Marx, Peters, and Hesse () even observed a negative relation with discharge in the regulated Missouri river.…”

Section: Discussionmentioning

confidence: 99%

Drift and emergence patterns of nonbiting midges (Chironomidae, Diptera, Insecta) in a subtropical river

Schulz

Rosa

Klein‐Stolz³

2019

Ecological Research

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The passive dispersal of macroinvertebrates suspended in the water column is known as drift. In tropical and subtropical rivers, which show a distinct hydrological cycle with defined flood and dry periods, chironomids may use flood periods for effective downstream dispersal, particularly if drift coincides with emergence, due to lower fish predator efficiency because of increased turbidity and turbulence. If this is true, chironomids should display a seasonal drift and emergence pattern. The abundances in drift of pupae, their exuviae and imagines (PEI) should be higher during the flood periods. Additionally, in response to predator pressure, it should be advantageous to drift, emerge, or both, to take place at night. We investigated drift and emergence patterns of chironomids in the subtropical Sinos River in southern Brazil during two annual cycles in monthly collections with sampling intervals of 3 hr during 24 hr. About 70% percent of all drifting macroinvertebrates were chironomids. Larvae showed a tendency to increase drift with higher stream flow. No relation of larval drift with the day or night period was detected. However, PEI drifted and emerged at significantly higher abundances during increased discharges. This pattern was not related to the period. During high flow, turbidity and turbulence increase. Hence, emergence efficiency may increase by higher survival rates under these conditions, due to reduced predation by visually oriented fish.

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Section: Discussionmentioning

confidence: 99%

Drift and emergence patterns of nonbiting midges (Chironomidae, Diptera, Insecta) in a subtropical river

Schulz

Rosa

Klein‐Stolz³

2019

Ecological Research

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“…Water diversion affects river biota and processes. It reduces biofilm biomass and activity (Arroita et al, 2017), affects the storage of organic matter (OM) (Death et al, 2009;Arroita et al, 2015;Riis et al, 2017), reduces leaf-litter decomposition (Schlief and Mutz, 2009;Martínez et al, 2017), and modifies invertebrate (Dewson et al, 2007;Walters, 2011;González et al, 2018;González and Elosegi, 2021) and fish communities (Anderson et al, 2015;Benejam et al, 2016). These impacts probably are stronger during base flows, when a larger fraction of the water is diverted, but legacy effects from diversion periods can also affect the river during shutdown periods (Arroita et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Organic Matter Processing on Dry Riverbeds is More Reactive to Water Diversion and Pollution Than on Wet Channels

Pérez-Calpe

Guzmán

Larrañaga

et al. 2022

Front. Environ. Sci.

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Rivers are severely affected by human activities and many are simultaneously impacted by multiple stressors. Water diversion for hydropower generation affects ecosystem functioning of the bypassed reaches, which can alternate between periods with natural discharge and others with reduced flow that increase the surface of dry riverbeds. In parallel, urban pollution contributes a complex mixture of nutrients, organic matter, heavy metals, pesticides, and drugs, thus becoming an important stressor in rivers. However, there is little information on the interaction between both stressors on ecosystem functioning and, particularly, on organic matter processing, a key process linked to the input of energy to food webs. To assess the impact of water diversion and urban pollution on organic matter processing, we selected four rivers in a pollution gradient with a similar diversion scheme and compared reaches upstream and downstream from the diversion weirs. We measured leaf-litter decomposition and carbon dioxide (CO2) fluxes in both the wet channel and the dry riverbed. Water diversion and pollution in the wet channel did not affect CO2 fluxes but reduced microbial decomposition, whereas in the dry riverbed, their interaction reduced total and microbial decomposition and CO2 fluxes. Thus, both stressors affected organic matter processing stronger in dry riverbeds than in the wet channel. These results show that dry riverbeds must be taken into account to assess and manage the impacts of human activities on river ecosystems.

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“…Reduced flow can also result in changes in physicochemical parameters of water by affecting the concentration of dissolved contaminants 35 , 37 and water temperature (which may increase as a result of faster warming during summer or decrease as a result of significant groundwater recharge to the watercourse) 35 , 38 . Conversely, temperature changes will be associated with changes in dissolved oxygen 35 , 38 , 39 , to which certain taxonomic groups are highly sensitive 38 . In the initial phase of low flows, an increase in macroinvertebrate density is typically observed due to a decrease in habitat availability.…”

Section: Introductionmentioning

confidence: 99%

“…In the initial phase of low flows, an increase in macroinvertebrate density is typically observed due to a decrease in habitat availability. Subsequently, competition, predation and limited food supply cause a decrease in the density of organisms 35 , 39 . Hence, lower habitat diversity due to lowering the water level very often results in a decrease in biodiversity.…”

Section: Introductionmentioning

confidence: 99%

Detailed analysis of habitat suitability curves for macroinvertebrates and functional feeding groups

Szałkiewicz

Kałuża

Grygoruk

2022

Sci Rep

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Environmental flows have primarily a practical purpose, being an important part of water management. Despite the widespread use of environmental flows, current studies rarely describe practical insights of the methods or consider environmental flows based on ecological traits, especially regarding macroinvertebrates. In addition to hydraulic parameters, the ecological traits may also indicate processes that drive the distribution of organisms. Nevertheless, so far the habitat suitability criteria for functional feeding groups, the most commonly used ecological trait for macroinvertebrates, have not been described. In this study, we performed a detailed analysis of habitat suitability curves for the macroinvertebrate community and for FFGs. The criteria were determined based on data collected during two field campaigns (2018 and 2019) from the Flinta River, a lowland, dynamic, sandy stream located in western Poland. The method of habitat preference curves (HPCs) for flow velocities, depths and substrate was adopted. Before determining the final habitat suitability criteria, for all considered groups the habitat preference curves and habitat utilization curves were determined separately for the data collected in 2018 and 2019. The results showed that this step was key in developing the final habitat suitability criteria. Additionally, considering FFGs provided insight into the mechanisms that drove the distribution of organisms and resultant suitability.

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Crowded waters: short-term response of invertebrate drift to water abstraction

Cited by 14 publications

References 46 publications

Drift and emergence patterns of nonbiting midges (Chironomidae, Diptera, Insecta) in a subtropical river

Drift and emergence patterns of nonbiting midges (Chironomidae, Diptera, Insecta) in a subtropical river

Organic Matter Processing on Dry Riverbeds is More Reactive to Water Diversion and Pollution Than on Wet Channels

Detailed analysis of habitat suitability curves for macroinvertebrates and functional feeding groups

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