Short Communication:  Fish diversity and its relationship with environmental variables in Kamala River, Nepal

Ghimire, Sumnima; Koju, Narayan Prasad

doi:10.13057/biodiv/d221119

Cited by 3 publications

(8 citation statements)

References 26 publications

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“…Nutrients and pH exerted little influence on fish abundance and diversity in the river. These results concur with the findings of Ghimire and Koju (2021), Wu et al. (2011) and Suvarnaraksha et al.…”

Section: Discussionsupporting

confidence: 93%

“…These results concur with the findings ofGhimire and Koju (2021),Wu et al (2011) andSuvarnaraksha et al (2012) who studied the relationship of fish species diversity and environmental variables in Kamala River (Nepal), Chisui River (China), and a tropical river in Ping-Wang River Basin (Thailand), respectively, and reported strong correlation between fish species diversity and temperature, dissolved oxygen, channel velocity, electrical conductivity, TDS and nitrates. The physico-chemical parameter ranges observed in this study compare favourably to the findings ofOuma et al (2016) andOrina et al (2017) in similar water quality studies of Lake Victoria and River Kuja, respectively.…”

supporting

confidence: 91%

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Ecological integrity of a medium‐sized river of a lake basin towards ecosystem health management

Osure,

Aura,

Getabu

et al. 2023

Lakes & Reservoirs

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This study demonstrates the use of a multi‐metric Fish Index of Biotic Integrity (FIBI) for assessment of ecological health of a medium‐sized river, under a gradient of human disturbances in the Kenyan side of the Lake Victoria Basin (LVB). Development of the index is based on water quality, river habitat quality and fish community attributes. The river was sampled from 2019 to 2020 during wet and dry seasons of the year at nine selected sites along its length based on the level of human disturbance. A total of nine metrics representing the structural and functional organization of fish communities were qualified using the separation power of Mann–Whitney U test (p < .05). Metric values at unimpaired, intermediate, impaired and no‐fish sites were used to establish the scoring criteria using inter‐quartile ranges. A 1, 3, 5 scoring system representing high, fair and slight deviation from the best site, respectively, was used in the final FIBI development. River mouth station had the highest FIBI score of 43, with extensive natural riparian buffer vegetation (>20 m) and 18 fish species implying least human disturbance. The midstream section had intermediate FIBI scores of 34–36, with wide natural riparian buffer vegetation (10–20 m) and 6–9 fish species that represented moderate human disturbance. The upstream section had the least FIBI score of 0, with no fish and narrow riparian buffer vegetation (<5 m) that indicated notable degradation. This study presents the preliminary results of using fish and habitat metrics for development of an Index of Biotic Integrity (IBI) for a medium‐sized river in a lake basin, as a decision‐making support tool for effective management and conservation of water resources. The study recommends restoration of river habitat quality for improved ecological integrity of rivers in the Lake Victoria Basin.

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Section: Discussionsupporting

confidence: 93%

supporting

confidence: 91%

Ecological integrity of a medium‐sized river of a lake basin towards ecosystem health management

Osure,

Aura,

Getabu

et al. 2023

Lakes & Reservoirs

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“…The highest species richness and diversity observed at the mouth of the river may be attributed to the influence of the lake and the general trend of increased species richness and diversity downstream [3]. The fish species diversity observed in the Awach Kibuon River (21 species, 12 genera, 7 families and 6 orders) is comparable to that reported in Kamala River in Nepal of 19 species belonging to 15 genera, 8 families and five orders [9] and the 23 species in 7…”

Section: Pan Africa Science Journalmentioning

confidence: 51%

“…The significant positive correlation between fish species richness and temperature, depth, conductivity, and total dissolved solids in the Awach Kibuon River is similar to the findings of several previous studies. A study on fish diversity and its relationship with environmental variables in Kamala River, Nepal [9] reported that species variation was correlated with temperature, electrical conductivity, TDS, and nitrate. Another study in the Chishui River, a protected tributary of the Yangtze River (China), [45] found that altitude, conductivity, dissolved oxygen, channel width, and current velocity significantly influenced the structure fish assemblages.…”

Section: Relationships Between Fish Species Diversity and Physico-che...mentioning

confidence: 99%

Longitudinal fish species diversity and distribution in a medium-sized Afro-tropical river in the Lake Victoria Basin

Osure

Getabu

Aura

et al. 2024

PASJ

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Despite significantly influencing fisheries characteristics of major global basins, medium-sized rivers such as Awach Kibuon remain the least studied. This study evaluated longitudinal fish species diversity, distribution, and environmental influence in Awach Kibuon River, Lake Victoria Basin, Kenya, to inform sustainable management of fisheries resources within the region. Nine sites located in different zones of the river were sampled monthly for eight months in 2019 and 2020. Fish samples were collected for 45 minutes using a backpack electrofisher on a 50-m river reach in every sampling site. Selected physico-chemical parameters (pH, total dissolved solids (TDS), dissolved oxygen (DO), temperature, conductivity, and turbidity) were measured in situ using standard methods. Longitudinal river fish diversity was assessed using species richness, Simpson's Index (D), Shannon-Weiner Index (H′), and Pielou's Evenness Index (J). A total of 983 fish specimens belonging to 21 species, 12 genera, seven families, and six orders were caught during sampling. Cyprinidae was the most dominant family, represented by nine species, followed by Claridae, Mochokidae, and Cichlidae, represented by three species each. Longitudinal species richness, abundance, and diversity indices deviated from the expected downstream increase. Upstream stations had no fish, whereas midstream and river mouth stations had moderate and high species diversity, respectively. Pearson's correlation analyses showed that temperature, conductivity, TDS, depth, and velocity influenced fish species richness in the river. The above findings call for the inclusion of medium-sized rivers in fisheries management plans of Great Lakes Basins for sustainability.

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“…The Redundancy Analysis (RDA) ordination method revealed that species variation was correlated with temperature, Electrical Conductivity (EC), Total Dissolved Solids (TDS), and nitrate. Nonetheless, different river sections were disturbed due to mining, deforestation, and construction activities, which could pose a real threat to fish diversity and population, and other aquatic organisms [10].…”

Section: Introductionmentioning

confidence: 99%

Ichthyological Inventory of the Kamikingi River: Identification and Classification of Predominant Species

Kalindiro,

Odhipio

2023

EESRJ

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Today, fish is one of the world's most precious and widely consumed natural resources, in both developed and developing countries. In addition, for as long as man has existed on Earth, food has been one of his main preoccupations. Thanks to its rich protein content, fish is becoming an increasingly important part of our diet. That's why, this study aims to identify the species of fish living in the Kamikingi River and to classify them into different families. To achieve this, a documentation-based approach via fieldwork was used for data collection and interpretation. These methods were supported by various techniques such as the capture technique (using tools such as Traps, Hooks, and Nets), the specimen preservation technique (using formalin as an anti-oxidant), and the specimen identification technique (using fish species identification keys such as those of Lé vê que, Paugy, and Poll) to compare fish species present in the Kamikingi River). To facilitate the presentation and/or interpretation of these field data, a number of indices were calculated. These are Jaccard's similarity index, relative abundance, Shannonweaver diversity index (H), equitability index and Dominance index. As a result, 495 specimens were identified in the Kamikingi River. Represented successively by two families: Cyprinidae and Claridae; and two genera: Barbus and Clarias. Which can be divided into 6 species: Barbus stigmatopygus, Clarias gariepinus, Barbus gourmansis, Barbus chlorotaenia, Barbus thys and Barbus sublineatus. Furthermore, the classification proposed by Jaccard's similarity index classifies these species into three groups, with a certain similarity between these groups in terms of the number of species per site. The first is the group formed by Barbus sublineatus and Barbus thys, the second by Clarias gariepinus, Barbus gourmansis and Barbus stigmatopygus, and the third by Barbus chlorotaenia. By the way, in this study, we highlight and have made available to the Bubolese population a number of fish species that were long unknown. These species are edible and pose no threat to human life. In view of the very small size and number of these species in the Kamikingi River, we reserve the right to encourage the fishing of these fish in this river for conservation reasons.

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Short Communication: Fish diversity and its relationship with environmental variables in Kamala River, Nepal

Cited by 3 publications

References 26 publications

Ecological integrity of a medium‐sized river of a lake basin towards ecosystem health management

Ecological integrity of a medium‐sized river of a lake basin towards ecosystem health management

Longitudinal fish species diversity and distribution in a medium-sized Afro-tropical river in the Lake Victoria Basin

Ichthyological Inventory of the Kamikingi River: Identification and Classification of Predominant Species

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