Macroinvertebrate indices versus microbial fecal pollution characteristics for water quality monitoring reveals contrasting results for an Ethiopian river

Kebede, Geda; Mushi, Douglas; Linke, Rita; Dereje, Olyad; Lakew, Aschalew; Hayes, Daniel S.; Farnleitner, Andreas H.; Graf, Wolfram

doi:10.1016/j.ecolind.2019.105733

Cited by 28 publications

(20 citation statements)

References 58 publications

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“…Kebede et al, 2020). Hence, although we propose that the unique caddisfly fauna in the Chilimo Forest represents a distinct section (zone 1a), the separation of the Upper Awash might also be due to the extensive loss of natural highland forests (Nyssen et al, 2015;Kebede et al, 2020). Overall, slope and mesolithal substrate were the most decisive environmental variables to separate the Upper Awash River from the lower zones.…”

Section: Zone 1bmentioning

confidence: 75%

“…Except for the Chilimo Forest, the rest of the Ethiopian Highlands are under intense anthropogenic pressure due to deforestation and high livestock density (e.g. Kebede et al, 2020). Hence, although we propose that the unique caddisfly fauna in the Chilimo Forest represents a distinct section (zone 1a), the separation of the Upper Awash might also be due to the extensive loss of natural highland forests (Nyssen et al, 2015;Kebede et al, 2020).…”

Section: Zone 1bmentioning

confidence: 81%

“…These river stretches are usually characterized by steep gradients, coarse stony substrate (macrolithal to microlithal, see Table 1), and a confined river course (Englmaier, 2018). With the exception of the protected Chilimo Forest (S1, National Forest Priority Area), the region is subject to extensive anthropogenic impacts with intensive agricultural use and overgrazing by livestock, resulting in the loss of natural vegetation (Tafere et al, 2013;Kebede et al, 2020).…”

Section: Study Area and Sampling Sitesmentioning

confidence: 99%

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Longitudinal river zonation in the tropics: examples of fish and caddisflies from the endorheic Awash River, Ethiopia

et al. 2020

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Specific concepts of fluvial ecology are well studied in riverine ecosystems of the temperate zone but poorly investigated in the Afrotropical region. Hence, we examined the longitudinal zonation of fish and adult caddisfly (Trichoptera) assemblages in the endorheic Awash River (1,250 km in length), Ethiopia. We expected that species assemblages are structured along environmental gradients, reflecting the pattern of large-scale freshwater ecoregions. We applied multivariate statistical methods to test for differences in spatial species assemblage structure and identified characteristic taxa of the observed biocoenoses by indicator species analyses. Fish and caddisfly assemblages were clustered into highland and lowland communities, following the freshwater ecoregions, but separated by an ecotone with highest biodiversity. Moreover, the caddisfly results suggest separating the heterogeneous highlands into a forested and a deforested zone. Surprisingly, the Awash drainage is rather species-poor: only 11 fish (1 endemic, 2 introduced) and 28 caddisfly species (8 new records for Ethiopia) were recorded from the mainstem and its major tributaries. Nevertheless, specialized species characterize the highland forests, whereas the lowlands primarily host geographically widely distributed species. This study showed that a combined approach of fish and caddisflies is a suitable method for assessing regional characteristics of fluvial ecosystems in the tropics.

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Section: Zone 1bmentioning

confidence: 75%

Section: Zone 1bmentioning

confidence: 81%

Section: Study Area and Sampling Sitesmentioning

confidence: 99%

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Longitudinal river zonation in the tropics: examples of fish and caddisflies from the endorheic Awash River, Ethiopia

et al. 2020

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“…Over the years, degradation of water quality has remained a major issue in most parts of the world, including the Niger Delta region of Nigeria. This has continued to pose a threat to health and economic development in Nigeria and other countries alike [1], with about 60% of the rural and urban populace depending on ponds, streams and shallow wells for domestic water supply in some developing countries [2,3]. The increasing concern for the level of pollutants in surface and groundwater makes water monitoring very essential [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Biodiversity and Environmental Integrity of Some Rivers in Derived Savannah Belt in Edo-North, Southern Nigeria

Dirisu¹,

Olomukoro²

2021

Inland Waters - Dynamics and Ecology

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Investigative study on macroinvertebrates and pollution tolerance index of four rivers in the derived savannah belt of Edo-North in Southern Nigeria was carried out from January to December, 2010. The study involved monthly field sampling and laboratory analysis of macrofauna. The objectives of the study were to evaluate the biodiversity status and importantly, the environmental integrity of the four selected rivers. Two dominant macroinvertebrate families were recorded; Baetidae and Chironomidae while, 53 macroinvertebrate taxa were identified across the rivers. The highest number of species (12) was recorded for Diptera, while, Hirudinea, Nematoda and Arachnida each had 1 species in the population. General diversity indices ranged from 2.02 to 2.78 with the least and highest recorded in Edion and Etuno Rivers, respectively. The fauna evenness index indicated that the water bodies had values less than 1.0. Meanwhile, Pollution tolerance index revealed spatial and seasonal variations in water quality conditions but only Edion River exhibited poor water quality in all the months of study.

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“…Many environmental or food pollutions have been attributed to chemicals or biological pathogens. [1][2][3][4] The signicant level of pollutants can result in many human health diseases. 5 Strict regulations for the limited concentration of poisonous heavy metals in the environment have been established all over the world.…”

mentioning

confidence: 99%

Portable environment-signal detection biosensors with cell-free synthetic biosystems

Lin

et al. 2020

RSC Adv.

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Macroinvertebrate indices versus microbial fecal pollution characteristics for water quality monitoring reveals contrasting results for an Ethiopian river

Cited by 28 publications

References 58 publications

Longitudinal river zonation in the tropics: examples of fish and caddisflies from the endorheic Awash River, Ethiopia

Longitudinal river zonation in the tropics: examples of fish and caddisflies from the endorheic Awash River, Ethiopia

Biodiversity and Environmental Integrity of Some Rivers in Derived Savannah Belt in Edo-North, Southern Nigeria

Portable environment-signal detection biosensors with cell-free synthetic biosystems

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