Influence of river regulation and instream habitat on invertebrate assemblage’ structure and function

Calapez, Ana Raquel; Serra, Sónia R. Q.; Rivaes, Rui; Aguiar, Francisca Alanny Rocha; Feio, Maria João

doi:10.1016/j.scitotenv.2021.148696

Cited by 13 publications

(6 citation statements)

References 59 publications

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“…This weak alkalinity may be related to the alkaline wastewater discharged into the water and human activities occurring around the riverbanks. DO was at a low level in August, and DO could cause changes in community structure by affecting the respiration and diffusion of macrobenthos [29][30][31]. DO is often related to water temperature, with generally higher water temperatures causing DO levels to decrease.…”

Section: Environmental Factorsmentioning

confidence: 99%

Macrobenthic Community Structure and Water Quality Evaluation in Ulungu River Basin (Northwest China)

Song,

Huo,

et al. 2024

Water

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In this study, the composition and structure of the macrobenthic community in the Ulungu River Basin was investigated and the water quality status of the basin was evaluated. In May and August 2022, and October 2023, the macrobenthic and water environmental factors at 11 sample sites in the basin were investigated, and the water quality of the basin was evaluated by the Shannon–Wiener index, FBI, and BMWP index. A total of 6101 macrobenthic organisms were collected; these organisms belonged to 3 phyla, 7 classes, 14 orders, 57 families, and 117 genera. Arthropod species accounted for the largest number of species (87.9%). A total of nine dominant species were found: Micronecta sp., Eukiefferiella sp., Baetis sp., Polypedilum sp., Saetheria sp., Ephemerella sp., Limnodrilus sp., Ephemera sp., and Hydropsyche sp. At the temporal level, the average density and biomass of macrobenthos were in the order of August > October > May; at the spatial level, the average density was greater in the tributaries than in the main stream, and the average biomass was greater in the main stream than in the tributaries. The mean values of the Shannon—Wiener index and Margalef richness index were as follows: August > October > May at the temporal level; the mean values of the Pielou evenness index were as follows: May > October > August at the temporal level. At the spatial level, the overall mean value of each diversity index indicated that the tributaries had larger diversity indices than the main stream. The water quality evaluation results revealed that the overall water quality level of the Ulungu River Basin ranges from light pollution to poor quality. Human interference activities greatly impact the water quality of the basin. To restore the ecology of the basin, it is necessary to strengthen the management and control of pollution sources.

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Section: Environmental Factorsmentioning

confidence: 99%

Macrobenthic Community Structure and Water Quality Evaluation in Ulungu River Basin (Northwest China)

Song,

Huo,

et al. 2024

Water

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“…Dam activities may influence all strata of the macroinvertebrate community. Dams have an observable influence on the composition of invertebrate communities residing in run-type mesohabitats (Calapez et al, 2021). Wang et al (2023) investigated the impacts of dams on macroinvertebrate assemblages in two tropical tributaries of the Lancang-Mekong River.…”

Section: Macroinvertebrate Assemblagesmentioning

confidence: 99%

Navigating a broken river: Understanding the ecological consequences of fragmentation on benthic life

Sofi,

Bhat,

Muslim

2023

Ecohydrology

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Habitat fragmentation is emerging as a leading cause of biodiversity decline in riverine ecosystems. Several natural and human factors contribute to the fragmentation of rivers. River fragmentation is a growing problem that is widely spread and poses a significant challenge to the conservation of freshwater biodiversity, but its impact is not fully documented and acknowledged. Fragmentation impedes the movement of aquatic organisms and alters natural flow regimes, disrupting habitats and trophic supplies for aquatic biodiversity. It can also affect the adaptive ability of organisms to natural environmental changes, leading to a change in the structure and function of biotic communities. To understand the effects of fragmentation on river ecology, it is crucial to link its spatial and structural implications. This article examines the occurrence and frequency of fragmentation and its effects on the ecological community of benthic biota. This review aims to elucidate the overall effects of fragmentation on river ecology and recommends the possible measures to mitigate its impact. Urgent action is required to establish a comprehensive global network of free‐flowing river systems and revive previously exploited rivers in different regions to enhance the protection and sustainable utilization of river ecosystems.

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“…Parker et al (2019) found that calibrating hydrological models according to flashiness and flow permanence provides models better suited to describe biotic condition variability, even if they do not accurately represent flow regimes [88]. Additionally, streamflow variability influences aquatic communities, namely, through changes in their taxonomic and trait composition [89].…”

Section: Response Of Aquatic Invertebrate Assemblages To Alterations ...mentioning

confidence: 99%

How to Improve the Biological Quality of Urban Streams? Reviewing the Effect of Hydromorphological Alterations and Rehabilitation Measures on Benthic Invertebrates

Zerega

Simões

Feio

2021

Water

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Urbanisation alters the natural hydromorphology of streams, affecting aquatic communities and ecological quality. Increasing efforts have been put into the rehabilitation of urban streams due to their importance for urban sustainability. Despite these efforts, many projects fail to achieve the improvement of aquatic communities. This study aims to provide specific recommendations to enhance the biological rehabilitation of urban streams by reviewing: (i) the impacts of urbanisation and climate change on urban stream hydrology, (ii) the responses of invertebrate assemblages to alterations in the hydrology and morphology of streams, and (iii) the hydromorphological rehabilitation measures applied to streams and their effect on invertebrate communities. This review found that commonly employed measures of habitat heterogeneity enhancement (such as the addition of meanders, boulders, and artificial riffles) are not enough to improve invertebrate communities. On the other hand, the most effective measures are those leading to the re-establishment of natural hydrological patterns and good water quality. Ultimately, an integrated ecohydrological approach that considers the entire watershed and its interactions between ecosystems and anthropological activities is the key to managing and rehabilitating urban streams.

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Influence of river regulation and instream habitat on invertebrate assemblage’ structure and function

Cited by 13 publications

References 59 publications

Macrobenthic Community Structure and Water Quality Evaluation in Ulungu River Basin (Northwest China)

Macrobenthic Community Structure and Water Quality Evaluation in Ulungu River Basin (Northwest China)

Navigating a broken river: Understanding the ecological consequences of fragmentation on benthic life

How to Improve the Biological Quality of Urban Streams? Reviewing the Effect of Hydromorphological Alterations and Rehabilitation Measures on Benthic Invertebrates

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