Fish diversity with relation to water quality of Bhadra River of Western Ghats (INDIA)

Shahnawaz, A.; Venkateshwarlu, M.; Somashekar, D. S.; Santosh, K.

doi:10.1007/s10661-008-0729-0

Cited by 46 publications

(30 citation statements)

References 8 publications

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“…The variations in the habitat attributes like pH, turbidity, total dissolved solids and conductivity across different sites was attributed to differences in land use pattern, which was responsible for variation of species diversity and distribution (De Silva et al 2007). Similar pattern of habitat attribute has been observed by Lobb and Orth (1991); Aadland (1993) and Shahnawaz et al (2010). Recently, the significance of habitat was endorsed by Peres-Neto (2004) with evidence suggesting species occurrence are driven more by relationship with abiotic factor than species interaction.…”

Section: Discussionsupporting

confidence: 68%

Fish diversity, habitat ecology and their conservation and management issues of a tropical River in Ganga basin, India

et al. 2010

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In the present communication habitat ecology, species diversity; distribution and different indices of fish biodiversity management were studied in a Central India river (River Betwa, a tributary of River Ganga basin approved under India's first river linking plan). Correlation between fish species richness with the hydrological attributes showed good relationship and water depth, dissolved oxygen and pH were found the most important variables in shaping fish assemblage. Altogether, sixty-three fish species belonging to 20 families and 45 genera were collected from five sampling stations spread along the upstream, mid stream and lower streams. Cyprinids were the most dominated group represented by 26 species belonging to 15 genera, followed by Bagridae (6 species from 3 genera), and Schilbeidae (4 species from 4 genera). The distribution of fish showed interesting pattern and about 10% species were common to all the sites showing long migration range. Shannon-Weiner diversity index showed considerable variation and ranged from 1.89 to 3.51. Out of 63 species status of 10 species were not known due to data deficit, 29 categorized as lower risk, 14 as vulnerable, 8 as endangered, while the remaining two species were introduced. Our study shows that the River supports considerable diversity of the fishes and is important for conservation and about 34% fish fauna is threatened being either vulnerable or endangered. We assessed that the river supports considerable percentage of food fish (89.47), ornamental fish (49.12%) and sport fish (5.26%). Among the eight major types of fish habitats identified along the entire stretch of river, open river, shallow water and deep pools were habitats contributing maximum diversity. Fish species richness (FSR) were significantly different (P \ 0.05) in all the habitats except channel confluence and scour pool. Trophic niche model may be useful for assessing altered as well as less altered fish habitat of the tropical rivers. Since this river will be interlinked in near future, this study would be useful for conservation planning and management and also for future assessment after interlinking. Issues related to various threats to aquatic environment and conservation management strategies have been discussed.

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Section: Discussionsupporting

confidence: 68%

Fish diversity, habitat ecology and their conservation and management issues of a tropical River in Ganga basin, India

et al. 2010

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“…The variations in the habitat attributes like temperature, pH, and total solids in Asan lake was attributed to differences in land use pattern, which was responsible for variation of species diversity and distribution. Similar pattern of habitat attribute has been observed by Shahnawaz et al (2010). Recently, the significance of habitat was endorsed by Peres-Neto (2004) with evidence suggesting species occurrence are driven more by relationship with abiotic factor than species interaction.…”

Section: Resultssupporting

confidence: 60%

Impact of water quality attributes and comparative study of icthyofaunal diversity of Asan lake and River Asan

Khanna

Ishaq

2013

JANS

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Abstract:The present study reported a total of 28 taxa with six families from Asan lake whereas only 18 taxa were reported from river Asan in Doon valley. The families identified were Cyprinidae, Chandadae, Belonidae, Cobitididae, Mastacembellidae, and Sisoridae. The impact of water quality parameters was quite evident on the fish diversity and density of Asan Lake and River Asan. Correlation between hydrological attributes showed good relationship in Asan lake and these parameters were found to be the most important variables in shaping fish assemblage. However, in River Asan the effect of physico-chemical factors were significant on fish diversity. The study showed that Asan lake supported considerable diversity of the fishes and is important for conservation. Its fish fauna is threatened being either vulnerable or endangered. The low fish diversity in river Asan indicated the disturbed habitat and ecological conditions of the river and the data generated from it would be useful for conservation planning and management and also for future assessment of this river.

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“…This kind of nonlinear relationship is also the case for pH, since few species can inhabit the acidic condition and the optimum is at 7.5-8.5. The linear relationships of species diversity with the remaining three parameters, i.e., conductivity, phosphorus, and alkalinity, have been widely reported (e.g., Johal et al, 2001;Shahnawaz et al, 2010). The effects of land uses on fish community structure have been widely investigated and proven to be important determinants (e.g., Orrego et al, 2009;Alexandre et al, 2010).…”

Section: Discussionmentioning

confidence: 99%

Fish diversity and assemblage patterns along the longitudinal gradient of a tropical river in the Indo-Burma hotspot region (Ping-Wang River Basin, Thailand)

et al. 2012

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The relationships between environmental variables as descriptors to the fish community, in terms of species diversity indices, and the fish assemblage patterns along the longitudinal gradient in a rhitral environment of a large river system located in the Indo-Burma hot spot (Ping-Wang River Basin) were studied. Fish data and water quality parameters were collected between January 1996 and April 2009. The three most diverse families were Cyprinidae, Balitoridae, and Cobitidae, respectively. Three physicochemical parameters (i.e., DO, water temperature, and pH) and three geo-morphological parameters (i.e., altitude, distance from the sea, and discharge) showed statistically significant to diversity parameters (P value \0.05). The classification and regression trees showed that the geo-morphological parameters were more significant in predicting both species richness and Shannon diversity index than the physicochemical parameters, in which altitude was the most significant. Fish assemblages in the Ping-Wang River Basin were classified into four patterns viz., mountainous, piedmont, transitory, and lowland species.

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Fish diversity with relation to water quality of Bhadra River of Western Ghats (INDIA)

Cited by 46 publications

References 8 publications

Fish diversity, habitat ecology and their conservation and management issues of a tropical River in Ganga basin, India

Fish diversity, habitat ecology and their conservation and management issues of a tropical River in Ganga basin, India

Impact of water quality attributes and comparative study of icthyofaunal diversity of Asan lake and River Asan

Fish diversity and assemblage patterns along the longitudinal gradient of a tropical river in the Indo-Burma hotspot region (Ping-Wang River Basin, Thailand)

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