Impact of agricultural land-use on functional feeding groups of Afrotropical Ephemeroptera, Plecoptera and Trichoptera in the Kat River, Eastern Cape, South Africa DOI Creative Commons
Frank Chukwuzuoke Akamagwuna, Oghenekaro Nelson Odume, Nicole B. Richoux

et al.

African Journal of Aquatic Science, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 14

Published: Dec. 3, 2024

AbstractDespite Africa experiencing a substantial rise in inadequately managed agricultural practices, studies examining the effects of these activities on functional organisation macroinvertebrates tropical streams are underdeveloped. The responses Ephemeroptera, Plecoptera and Trichoptera (EPTs) feeding groups (FFGs) to pollution were investigated Kat River, Eastern Cape, South Africa, identify potential FFG indicators. Physicochemical parameters sampled from eight sites delineated into four land-use impact categories (highly impacted, HIC; impacted category, IC; moderately MIC; least LIC) based percentage land cover. Permutational multivariate analyses variance (PERMANOVA) results revealed use (F = 4.2, 3.62; p < 0.05) season 2.89, 0.03) influenced FFGs river, with shredder abundances decreasing increasing stress. Conversely, collectors, predators scrapers tolerant disturbance. Nutrient variables (NO3-N, NO2-N NH4-N), canopy depth critical that affected structure river. Our findings provided more understanding insights EPT relation can contribute developing trait-based biomonitoring tools Africa.Keywords: pollutionfunctional organisationmacroinvertebrate

Language: Английский

Application of magnetic carbon nanocomposite from agro-waste for the removal of pollutants from water and wastewater DOI
Jayanthi Barasarathi,

Palsan Sannasi Abdullah,

C. U. Emenike

et al.

Chemosphere, Journal Year: 2022, Volume and Issue: 305, P. 135384 - 135384

Published: June 17, 2022

Language: Английский

Citations

65
Health assessment and driving forces analysis of small-to-medium rivers within highly urbanized areas based on a rapid macroinvertebrate bioassessment index DOI
Xiaoming Peng, Dantong Zhu, Dong Huang

et al.

Urban Ecosystems, Journal Year: 2025, Volume and Issue: 28(2)

Published: Jan. 30, 2025

Language: Английский

Citations

0
Exploring macroinvertebrate traits along anthropogenic disturbed gradient in West African Savanna River systems: A case study of Niger state, North central region of Nigeria DOI
Attobla Fulbert Assie, Francis O. Arimoro,

Diana Nantege

et al.

Biologia, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 3, 2025

Language: Английский

Citations

0
Environmental characteristics shape macroinvertebrate community structure across spatiotemporal scales in a subtropical African river system DOI Creative Commons
Linton F. Munyai,

Busisiwe P. Gumede,

Farai Dondofema

et al.

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: Feb. 24, 2025

Understanding the impact of human activities and environmental drivers on macroinvertebrate communities is critical to adequately manage river ecosystems under multiple stressors. In this study, we assessed community structure in relation water sediment chemistry. Samples (i.e., water, macroinvertebrates) were collected from 16 sites along subtropical Luvuvhu River (South Africa) mainstem its tributaries across two seasons cool–dry (June), hot–wet (November)). The analysed data was using multivariate analyses diversity matrices. Significant differences observed sections for most pH, temperature, resistivity, ammonium, phosphates) potassium, sodium, copper, zinc, boron, organic carbon) variables. Macroinvertebrates exhibited high during season compared season, with a six distinct macroinvertebrates families Odonata, Diptera, Coleoptera, Hemiptera, Trichoptera, Ephemeroptera) having taxon abundances. Based CCA analysis, positively associated axis 2, characterised by Mg, Na, carbon, ammonium phosphates, all highlighted variables significant effect composition. results obtained study that chemistry had associations changes Therefore, understanding relationship between chemistry, matrices rivers are impacted essential comprehending integrity ecosystem providing guidance conservation managers. This knowledge will assist how effectively safeguard these systems against further deterioration anthropogenic activities.

Language: Английский

Citations

0
Effects of urban-agricultural land-use on Afrotropical macroinvertebrate functional feeding groups in selected rivers in the Niger Delta Region, Nigeria DOI
Augustine Ovie Edegbene, Frank Chukwuzuoke Akamagwuna, Francis O. Arimoro

et al.

Hydrobiologia, Journal Year: 2022, Volume and Issue: 849(21), P. 4857 - 4869

Published: Oct. 6, 2022

Language: Английский

Citations

18
Taxonomic and functional diversity of macroinvertebrates in sediment and macrophyte habitats: A case study, the Ibrahimia Canal, Nile River, Egypt DOI Creative Commons
Reda E. Bendary, Mohamed E. Goher, Amr S. El-Shamy

et al.

The Egyptian Journal of Aquatic Research, Journal Year: 2023, Volume and Issue: 49(2), P. 129 - 135

Published: May 29, 2023

The taxonomic and functional diversities of macroinvertebrates are a critical indicator ecosystem health. This study focuses on the assemblage structure in Ibrahimia Canal, Egypt. They were compared across two different substrate habitats: sediment-associated macrophytes-associated habitats. Significant variations biological trait community composition habitats recorded, with high taxa abundance sediment increased diversity macrophyte substrate. In substrates, burrow dweller collector-filterer main characteristics, while tube collector-gatherer traits macrophytes indices tended to increase from substrate; however, there was an Rao's quadratic entropy index (RaoQ) for habitat. Redundancy analyses explained association between environmental factors macroinvertebrate traits. Total suspended solids, dissolved oxygen, chemical demand phosphate key drivers macroinvertebrates. Integration approaches is recommended give insight into explaining managing freshwater ecosystem.

Language: Английский

Citations

8
Potential Hybridization of Fasciola hepatica and F. gigantica in Africa—A Scoping Review DOI Creative Commons
Sophy Nukeri, Mokgadi Pulane Malatji, Mita E. Sengupta

et al.

Pathogens, Journal Year: 2022, Volume and Issue: 11(11), P. 1303 - 1303

Published: Nov. 6, 2022

The occurrence of Fasciola gigantica and F. hepatica in Africa is well documented; however, unlike Asia, there a paucity information on the existence hybrids or parthenogenetic species continent. Nonetheless, these hybrid may have beneficial characteristics, such as increased host range pathogenicity. This study provides evidence potential Africa. A literature search articles published between 1980 2022 was conducted PubMed, Google Scholar, Science Direct using combination terms Boolean operators. were documented 26 African countries with being restricted to 12 countries, whilst occurred 24 identified based morphological features adult specimens eggs molecular techniques. co-occurrence both reported 11 countries. However, only confirmed Egypt Chad but suspected South Zimbabwe. These liver fluke morphometrics, assessment sperms seminal vesicle, intermediate snails Galba truncatula Radix natalensis Ethiopia, Egypt, Africa, Tanzania, Uganda, where co-occurrences reported. invasive Pseudosuccinea columella naturally infected Egypt. In Zimbabwe, P. presumed Fasciola. suggests that might also be contributing overlapping distributions two since it can transmit species. Notwithstanding limited studies real mimic scenarios exist most Asian aspermic sp. been already, reported? Thus, authors recommend future surveys markers recommended identify spp. their snail hosts demarcate areas distribution and/or occur. Further should determine presence role transmission geographical overlaps help prevent parasite spillbacks.

Language: Английский

Citations

13
Effects of river regulation on aquatic invertebrate community composition: A comparative analysis in two southern African rivers DOI Creative Commons
Lizaan de Necker,

Divan van Rooyen,

Ruan Gerber

et al.

Ecology and Evolution, Journal Year: 2024, Volume and Issue: 14(2)

Published: Feb. 1, 2024

While natural floods play a crucial role in shaping the composition of aquatic communities, most rivers worldwide are regulated or dammed for anthropogenic purposes, resulting alterations to biological and chemical these ecosystems. Studies have demonstrated various negative effects river regulation on invertebrate communities globally. However, there is scarcity research Africa, despite its vulnerability impacts. This study aimed compare Phongolo River, an impacted river, Usuthu less unregulated South Africa. It further ascertain whether Lake Nyamithi, naturally saline lake receiving water from both aforementioned systems, exhibited stronger similarity one two terms composition. Aquatic samples were collected 2012 2018 over several surveys. The River diverse sensitive community, emphasising high conservation value. impact, with taxa more resilient changes quality flow compared River. Mismanagement excessive use may lead loss any remaining this river. presence invasive molluscan Nyamithi also poses threat native communities. These species currently absent although other species, such as Australian redclaw crayfish, found systems. displayed unique distinct their floodplains. provides important baseline information River's invertebrates emphasises need maintain adequate floodplains protect biodiversity species.

Language: Английский

Citations

2
Spatial patterns of macrobenthos taxonomic and functional diversity throughout the ecotones from river to lake: A case study in Northern China DOI Creative Commons

Xianting Fu,

Wei Yang, Lei Zheng

et al.

Frontiers in Ecology and Evolution, Journal Year: 2022, Volume and Issue: 10

Published: Aug. 10, 2022

Macrobenthos taxonomic and functional diversity are key indicators of ecosystem health. River–lake ecotones macrobenthos habitats. However, we don’t fully understand biodiversity patterns in these ecotones. We studied water environment, sediment heavy metal contents, community, which sampled simultaneously from 29 sampling sites along the Fu River–Baiyangdian Lake gradient Northern China with five field surveys 2018 to 2019. Six trait classes resolved into 25 categories were allocated through a binary coding system. used RLQ framework (R, environmental variables; L, species taxa; Q, traits) fourth-corner analyses evaluate relationship between variables traits. Finally, carried out variance partitioning assess contributions variation diversities. As results, TN TP contents river lake mouths lower than those adjacent lake, indicating that river–lake played role purifying buffering pollution. High mouth presence unique taxa two revealed edge effects, but abundance biomass extremely low compared lake. found no significant correlation indices mouths. Water depth, transparency, , main drivers diversity, explaining up 45.5% 56.2% variation, respectively. Sediment Cd, Cr, Cu, Pb, Zn explained 15.1% 32.8%, respectively, diversity. Our results suggest approaches based on biological traits can complement Furthermore, improving eutrophication, pollution will improve maintain

Language: Английский

Citations

10
Agricultural disturbance affects taxonomic and functional diversity of Afrotropical macroinvertebrate composition in a South African river system DOI Creative Commons
Frank Chukwuzuoke Akamagwuna, Oghenekaro Nelson Odume, Nicole B. Richoux

et al.

Environmental and Sustainability Indicators, Journal Year: 2023, Volume and Issue: 18, P. 100251 - 100251

Published: March 31, 2023

Language: Английский

Citations

6