Assessment of functional feeding groups (FFG) structure of aquatic insects in North- western Rif - Morocco

Biodiversity Data Journal, Journal Year: 2023, Volume and Issue: 11

Published: June 14, 2023

The involvement of trait-based approaches is crucial for understanding spatial patterns, energy flow and matter transfer in running water systems, which requires consistent knowledge the functional structures aquatic communities, with advantage combining physical properties behavioral mechanisms food acquisition rather than taxonomic group. present study indicated how feeding groups may be used as a proxy classical evaluation, well potential interest incorporating them indicators anthropogenic stressors. composition abundance insects were examined from September 2021 to August 2022 along Western Rif Region. Benthic samples collected nine sampling points studied area using Surber sampler mesh size 500 µm diameter 20*20 cm. stations included this work chosen their accessibility position on hydrographic systems. sampled organisms whole revealed 5,342 individuals belonging 60 families seven orders insects, classified into five groups. In terms abundance, Collector-gatherers (Ephemeroptera Diptera) most abundant trophic group at sites, proportion 38.47%. Predators (Coleoptera, Hemiptera Odonata) second all followed by Collector-filters, accounting 39.53%, 28.14% 22.37% respectively, while Scarpers Shredders had lowest representation across sites 4.16%. high number registered Collectors could related ability feed diverse range items compared remaining guilds. According Canonical Correspondence Analysis results, physicochemical (i.e. T, pH, BOD5, Cl- NO3-) hydromorphological current velocity depth) variables amongst key predictors shaping structure biota during investigation. It highly recommended carry out suitable measures largely attenuate pressures order preserve integrity freshwater bodies biota.

Language: Английский

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Discriminating the effects of local stressors from climatic factors and dispersal processes on multiple biodiversity dimensions of macroinvertebrate communities across subtropical drainage basins

The Science of The Total Environment, Journal Year: 2019, Volume and Issue: 711, P. 134750 - 134750

Published: Nov. 4, 2019

Language: Английский

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Variability in macroinvertebrate community structure and its response to ecological factors of the Weihe River Basin, China

Ecological Engineering, Journal Year: 2019, Volume and Issue: 140, P. 105595 - 105595

Published: Sept. 16, 2019

Language: Английский

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Oxygen is a better predictor of macroinvertebrate richness than temperature—a systematic review

Environmental Research Letters, Journal Year: 2020, Volume and Issue: 16(2), P. 023002 - 023002

Published: June 10, 2020

Abstract Despite ongoing loss of diversity in freshwater ecosystems, and despite mitigation measures to halt this loss, it is still not clear what ecological drivers underlies lotic biodiversity. A complicating factor that two the main drivers, oxygen temperature, are correlated, hence studies towards confounded. Here, we undertook a systematic review, consisting both qualitative quantitative analyses, disentangle these drivers. We accessed literature repositories assessed papers for eligibility using set predetermined criteria. For part used results on patterns taxonomic richness multivariate ordination analyses expose effects temperature dissolved concentration meta-analysis, could only use raw data few generalized linear models. The analysis did show strong consistent either or diversity. However, meta-analysis showed positively related with concentration. Inversely negative correlation was found, but adding model which already included content significantly improve model. These strength review over conventional without meta-analysis; found no pattern analysis, analysis.

Language: Английский

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Phylogenetic and functional diversity could be better indicators of macroinvertebrate community stability

Ecological Indicators, Journal Year: 2021, Volume and Issue: 129, P. 107892 - 107892

Published: June 16, 2021

It is essential to understand biodiversity's contribution maintaining river ecosystem functioning and stability, which will us help develop more effective strategies for conservation. However, knowledge regarding the relationship between multidimensional characteristics of biodiversity stability in aquatic ecosystems remains limited. This study examined relationships macroinvertebrate diversity, secondary productivity, productivity/biomass (P/B) ratios natural examine kind diversity could best indicate community stability. In this study, macroinvertebrates were extensively sampled from Chishui River (CSH, an undammed river) Heishui (HSH, a dammed April September 2019. We comparatively analyzed seasonal variations different types (species SD; phylogenetic PD; functional FD), P/B two rivers. Structural equation models used reveal ratios. The results showed that SD significantly decreased during both CSH has dramatic hydrological fluctuations, HSH stable conditions. These findings indicated not clearly distinguish key factors cause changes biodiversity. Conversely, PD FD declined CSH, but they did change HSH. result are sensitive than identifying effects disturbances on these ecosystems. After severe disturbance, although species abundance, biomass, biodiversity, productivity still high value redundancy communities, further demonstrated CSH. revealed significant those rivers, suggested may be better indicators Our provides evidence biological traits evolutionary history can achieve complete understanding patterns maintain

Language: Английский

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Land conversion induced by urbanization leads to taxonomic and functional homogenization of a river macroinvertebrate metacommunity

The Science of The Total Environment, Journal Year: 2022, Volume and Issue: 825, P. 153940 - 153940

Published: Feb. 18, 2022

Language: Английский

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Exploring the community structure of Afrotropical macroinvertebrate traits and ecological preferences along an agricultural pollution gradient in the Kat River, Eastern Cape, South Africa

Ecological Indicators, Journal Year: 2022, Volume and Issue: 135, P. 108570 - 108570

Published: Jan. 18, 2022

Agricultural activities impact riverine ecosystem structure, function, and processes. In the Afrotropical regions, research on agricultural effects macroinvertebrate trait distribution is sparse. this study, we investigated spatial temporal changes in community structure of traits along an disturbance gradient River system. Physicochemical variables were sampled alongside macroinvertebrates at eight sites dry (winter spring) wet (summer autumn) periods 2018–2019. We grouped into four categories using percentage land-use cover within each drainage area. Our results showed that pollution exhibited varying ecological preferences, with such as a predatory lifestyle, medium body-size (>10–20 mm), active swimming, possession spiracles haemoglobin, adult aquatic life stage increasing gradient. These positively associated nutrients (PO4+-P, NO2+-N, NH4+-N NO3+-N), salinity, turbidity temperature deemed tolerant pollution. Shredding, crawling, preference for macrophytes food strong positive associations least disturbed negatively nutrients, water temperature. As such, these three considered sensitive to The identified indicator can be used predict survival patterns organisms under agriculture-induced stress.

Language: Английский

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Responses of macroinvertebrate functional trait structure to river damming: From within-river to basin-scale patterns

Environmental Research, Journal Year: 2023, Volume and Issue: 220, P. 115255 - 115255

Published: Jan. 9, 2023

Language: Английский

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Preliminary studies on macroinvertebrate biomonitoring of freshwater systems in the Afrotropics: a case study of the Chanchaga River in the Lower Niger-Benue Ecoregion of Nigeria

Biologia, Journal Year: 2023, Volume and Issue: 78(11), P. 3189 - 3205

Published: May 30, 2023

Language: Английский

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Stream macroinvertebrate community metrics consistently respond to a spatiotemporal disturbance gradient but composition is more context-dependent

Landscape Ecology, Journal Year: 2023, Volume and Issue: 38(12), P. 3133 - 3151

Published: Sept. 15, 2023

Language: Английский

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