2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/26/2021 | 8:30 AM - 10:30 AM | Longitudinal changes in macroinvertebrate communities along Gura and Sagana rivers in Kenya. | Virtual Platform
Longitudinal changes in macroinvertebrate communities along Gura and Sagana rivers in Kenya.
Around the world, macroinvertebrates have been used in biomonitoring and aquatic restoration due to their great value in conservation. However, limited studies on macroinvertebrate community structure and abundance in East African rivers has precluded their use in biomonitoring these systems. Here, we aim to determine the abundance and distribution patterns of macroinvertebrate communities in Gura and Sagana rivers. We measured physicochemical parameters and sampled macroinvertebrates at 7 sites along the Gura River and 3 sites on the Sagana up and downstream of its confluence with the Gura. We counted and identified invertebrates to the lowest available taxonomic level. There was spatial variation in physicochemical parameters, including water temperature, pH, dissolved oxygen, turbidity, and electrical conductivity (p ? 0.05). In each river, macroinvertebrate abundance decreased from up - to downstream sites across all dominant orders (Ephemeroptera, Trichoptera, Coleoptera and Diptera), and cluster analysis revealed two main community clusters that differed from up- to downstream. The family Heptageniidae exhibited high abundance compared to other Ephemeroptera families in the upstream cluster. The characterization of these communities provides the first step for using macroinvertebrates in monitoring the quality in these two important Kenyan rivers.
- Biodiversity
- Conservation
- Land use
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Presenters/Authors
Joshua Benjamin
(), University of Florida, joshuaben3@gmail.com;
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Nonfinancial -