Spatiotemporal variations in finfish assemblage and diversity indices in relation to ecological indicators of the Atrai River, Dinajpur, Bangladesh

Mia, M. J.; Naher, Jasmin; Azom, Md. Golam; Sabuz, Md. Shamim Reza; Islam, Hamidul

doi:10.1016/j.ejar.2019.06.001

Cited by 13 publications

(9 citation statements)

References 26 publications

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“…Although there are some scattered research works on fish biodiversity in freshwater habitats, fish assemblage structure at freshwater rivers has not been well studied in Bangladesh except in our previous studies (Islam et al 2017b;Islam et al 2019;Mia et al 2019). It is essential to understand the current situation of fish assemblage structure in the Atrai and Dhepa Rivers for efficient and rational management.…”

Section: Introductionmentioning

confidence: 93%

Spatial and temporal variations of fish assembly with environmental parameters from two major rivers in Dinajpur district of Bangladesh

Rahman,

Amin,

Lima

et al. 2024

Bangladesh J. Sci. Ind. Res.

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The study examined habitat and seasonal variations of fin fish structure and ecological parameters in the Atrai and Dhepa Rivers, Dinajpur, Bangladesh. The researchers collected data from four sampling stations, revealing 15532 individuals from 44 genera and 59 species. Pethia ticto, Chanda nama, Cirrhinus reba, Puntius sophore, and Salmophasia bacaila were recorded as dominated fishes (>4.95%). The fish population was highest in autumn at Mohonpur (MP), while lowest in the monsoon at Karnai Bazar (KB). There were no significant variations across stations for rainfall, dissolved oxygen, pH, transparency, air and water temperatures, and pH. However, significant differences were observed among seasons based on all factors. The study also revealed differences in dominance, Margalef, Shannon, and evenness diversity indices spatiotemporally, except for evenness diversity indices among seasons. The findings could be useful for conservation studies in the future, especially after establishing and managing restricted areas like fish sanctuaries in both rivers. Bangladesh J. Sci. Ind. Res. 59(2), 55-66, 2024

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Section: Introductionmentioning

confidence: 93%

Spatial and temporal variations of fish assembly with environmental parameters from two major rivers in Dinajpur district of Bangladesh

Rahman,

Amin,

Lima

et al. 2024

Bangladesh J. Sci. Ind. Res.

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“…The water qualities of the riverine ecosystem in Bangladesh are influenced by different physicochemical and biological factors. Among them, the observed water temperature, dissolved oxygen and pH of the rivers in Bangladesh are within 16.00 to 31.50 °C, 4.60 to 7.90 mg/L and 7.10 to 8.90 ppm, respectively [1,2]. As per the environmental quality standard (EQS), the mean water temperature, dissolved oxygen and pH requirements for maintaining aquatic life of inland water are 20 to 30 °C, 4 to 6 mg/L and 6.5 to 8.5 ppm, respectively [3].…”

Section: Introductionmentioning

confidence: 97%

Diatom Assemblages and Their Interrelationships between Different Water Quality Parameters in Gorveshwari River of Bangladesh

et al. 2023

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The main objectives of this study were to assess the diversity of diatom species and explain how physico-chemical factors and trophic levels interact with diatom assemblages. An assemblage of diatom communities in a riverine environment was assessed through forthright sampling for a period of 7 months from September 2019 to March 2020. Three sampling sites from the upstream, midstream and downstream parts of a river located in the northwest part of Bangladesh were selected for water quality analysis. A variety of multivariate data analyses were done to evaluate the environmental and biological data as well as to observe their interrelationships. A total of 7 genera of Diatom namely Nitzschia, Diatoma, Melosira, Synedra, Tabillaria, Navicula, and Fragillaria were recorded. Nitzschia was the most dominant genus compared to the other genus at downstream with an abundance of 1.92×103 cells/L while Tabillaria sp. was noted as a rare one with the lowest abundance of 0.37×103 cells/L at the midstream site. The interrelationship analysis clarified that water temperature positively altered the distribution of Melosira, Navicula, and Tabillaria while its abundance was less dependent on dissolved oxygen and pH. The results from a 2-dimensional Nonmetric Multidimensional Scaling (NMS) revealed the abundance of diatom at downstream was statistically higher than upstream and midstream. Hence, the study concluded that the diatom composition was very sensitive to the physico-chemical parameters according to water direction and could be used as a bio-indicator to assess the surface water quality. HIGHLIGHTS Diatom species composition was very sensitive to water quality indicators Diatom assemblages can be used as a bio-indicator to assess the water quality Diatom concentration was statistically higher at downstream compared to upstream and midstream GRAPHICAL ABSTRACT

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“…The factors influencing fish assemblages involve the environmental variables which are spatially heterogeneous and temporally variable and biotic interactions such as competition and predation (Harvey & Stewart 1991;Grossman et al 1998). The environmental variables such as water velocity (Li et al 2012;Adhikari et al 2021;Limbu et al 2021b), water depth (Kadye et al 2008;Li et al 2012;Mia et al 2019;Chaudhary & Limbu 2021), substrate (Vlach et al 2005;Yan et al 2010), water temperature (Hossain et al 2012;Nsor & Obodai 2016), and dissolved oxygen (Guo et al 2018) all have been found to affect fish abundance and distribution in the rivers and streams.…”

Section: Introductionmentioning

confidence: 99%

Evaluating the influence of environmental variables on fish abundance and distribution in the Singhiya River of Morang District, eastern Nepal

Jash Hang Limbu,

Rajbanshi,

Tumbahangfe

et al. 2023

J. Threat. Taxa

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Monitoring the impact of fishing pressure on the Singhiya River is critical for resource development and sustainability, and the present situation is alarming and causing critical concern among the public. This study aimed to identify fish community trends over time and space in the river, and to investigate the impact of environmental variables on fish abundance and dispersion. Monthly fish sampling was performed from October 2020 to September 2021 from the 5th to 10th of each month. We used three cast nets of various mesh sizes (0.5, 2, & 4 cm) and monofilament gill nets with mesh sizes of 6, 8, & 10 cm. A total of 7,593 fish were collected, representing 61 species from seven orders, 20 families, and 37 genera. Similarity percentage (SIMPER) analysis revealed 78.8% similarity among six stations, with the primary contributing species: Puntius chola (28.2%), Puntius sophore (13.5%), Pethia ticto (5.33%), Chagunius chagunio (3.76%), Barbonymus gonionotus (3.69%), Puntius terio (3.46%), Opsarius shacra (2.2%), and Opsarius bendelisis (2.1%). Analysis of variance (ANOVA) on canonical correspondence analysis revealed that four of the seven selected environmental variables had significant relationship with the fish assemblage such as water parameters velocity, temperature, pH, and hardness. Overfishing and direct discharge of industrial waste into water resources may be the primary causes for the decline in fish diversity in Singhiya River.

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Spatiotemporal variations in finfish assemblage and diversity indices in relation to ecological indicators of the Atrai River, Dinajpur, Bangladesh

Cited by 13 publications

References 26 publications

Spatial and temporal variations of fish assembly with environmental parameters from two major rivers in Dinajpur district of Bangladesh

Spatial and temporal variations of fish assembly with environmental parameters from two major rivers in Dinajpur district of Bangladesh

Diatom Assemblages and Their Interrelationships between Different Water Quality Parameters in Gorveshwari River of Bangladesh

Evaluating the influence of environmental variables on fish abundance and distribution in the Singhiya River of Morang District, eastern Nepal

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