Ichthyofauna of the river Halda, Chittagong, Bangladesh

Azadi, Mohammad Ali; Alam, Mohammad Arshad Ul

doi:10.3329/bjz.v41i2.23313

Cited by 18 publications

(25 citation statements)

References 9 publications

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“…However, this problem is not rare in other part of Bangladesh and has been already reported by Galib et al (2013) and Mohsin et al (2013) who carried out researches on fish fauna in the Choto Jamuna River and the Padma River, respectively. The recorded fish species were lower than some other rivers of Bangladesh (Islam and Hossain, 1983;Hossain et al, 2007) but presence of similar number of fish species was also reported in the Halda River (Azadi and Alam, 2013). However, all the above mentioned researchers concluded with gradual loss of biodiversity in their considered rivers due to both natural and man-made causes.…”

Section: Fish Diversitymentioning

confidence: 66%

A preliminary study on fish fauna of the Passur River in Bangladesh

Gain¹,

Mahfuj²,

Sultana³

et al. 2015

Int. J. Biodivers. Conserv.

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The ichthyofauna, their occurrence and conservation status in the Passur River of Khulna district have been studied for a period, from November 2011 to April 2012. A total of 95 finfish species contributing to 14 orders, 45 families and 77 genera were identified. The most dominant fish order was Perciformes with 38 species in 35 genera. Maximum number of species were recorded under the family Gobiidae (14 species) followed by the family Cyprinidae (8 species). Out of 95 species, 14 belonged to the threatened and 3 to the near threatened. The occurrence of majority of the fishes (50%) was recorded as available followed by less available (26%), rare (16%) and very rare (8%). Considering all the findings it is concluded that the Passur River can be considered as a refuge for conservation of threatened freshwater fishes of Bangladesh. Finally, the establishment of fish sanctuaries for both threatened and non-threatened species as well as counter survey is recommended to cross check the fish diversity for their proper management and conservation.

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Section: Fish Diversitymentioning

confidence: 66%

A preliminary study on fish fauna of the Passur River in Bangladesh

Gain¹,

Mahfuj²,

Sultana³

et al. 2015

Int. J. Biodivers. Conserv.

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“…The river habitat is under extinction threat due to loop cutting in meanders, sand mining, blockage of flow by dams, sluice gates, embankments, pollution from paper mills, power plants, rubber dams over the river at upstream. Natural causes like siltation, erosion, climate change impacts are also influencing the changes in the river ecosystem [5]. Moreover, increased salinity in the Halda River has already posed a serious threat to city water supply over three dry seasons [6].…”

Section: Introductionmentioning

confidence: 99%

A sustainability study of the flow regulation impacts by dams in a carp breeding river using the hydrodynamic model and building block analysis

et al. 2019

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Halda, one of the major tributaries of the mountainous river Karnaphuli, is well known as the country's only natural carp spawning ground. Naturally fertilized eggs of carps collected from Halda River are hatched in mud-made scoops on the river bank for aquaculture purposes. However, the river habitat is under constant threat due to human interventions like loop cutting, pollution from the paper mill and power plant, blocking natural water flow of larger tributaries by introducing sluice gates, embankments and rubber dam over the river at upstream, as well natural causes like siltation, erosion and climate change impacts. A study is conducted to address the issues of the ecosystem, sustainable management and the flow regulation impacts of dams in the Halda River, although the flow regulation assessments are conducted based on the macroinvertebrate, index-based framework, land-use effects on the hydrology, new indicators development, hydrologic impact assessment, hydrodynamics in dam regulated rivers, surface-water hydrodynamics and regimes of a small mountain stream and wide range of initiatives. In our case, we considered runoff flow, mountainous flow and dams in the rivers are primary parameters for assessment, so based on previous studies we decided to simulate a hydrologic and hydrodynamic model for the dam and without dam scenarios. Major difficulties and challenges for the environmental flow analysis of a river are continuous data availability. In this research, a hydrologic model ArcSWAT has been built to assess the contribution of rainfall on the river discharge to be used as output from the tributaries in the hydrodynamic model Delft3D. The research findings help us to perceive the effect of the dams on fish breeding condition in the river. In order to perform the environment flow analysis of the river, Tennant method has been followed in the study, which is a secure and reliable approach. The flow regulation impacts are assessed for fish habitat and spawning in the river area based on the simulations. Finally, the findings are further analyzed for velocity profiles for dams by building block method for the sustainable aquatic habitat in the Halda River.

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“…Halda River is one of the most important tributaries of the River Karnaphuli and is the only natural carp (Cyprinus carpio) breeding site of Bangladesh [1,2]. Carp fries collected from the river are the only natural breeding supplied to different divisions of Bangladesh for aquaculture.…”

Section: Introductionmentioning

confidence: 99%

“…Dam constructions reduce water level at the downstream, which may negatively impact the ecological integrity of the river ecosystem by river sediment dynamics and morphology as well as water quality and habitat availability of aquatic [5,7]. The carp fish territory is under extinction risk because rubber dams, embankments, sluice gates, along with the loop cutting in meanders and waste discharge from paper and power plant industries at the river upstream are obstructing the minimum flow required for the carp habitats and spawning within the Halda River [2].…”

Section: Introductionmentioning

confidence: 99%

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A sustainability analysis on the trends and frequency of the channel flow of a carp breeding river against human interventions and governing public–private partnership (PPP) as adaptation

et al. 2020

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This study presents the trends of channel flow against human interventions and proposes an adaptation plan through a public-private Partnership (PPP) model to overcome the existing deteriorating condition of the Halda River. Being the only natural carp breeding ground in Bangladesh, the Halda River is significant for the national economy. However, the river's destiny is now stricken with infrastructural obstructions, industrial and residual usage exploits, and shortsighted interventions, whereas the impacts of climate change are likely to worsen the scenarios with high salinity intrusion. The unplanned human interventions due to agricultural purposes are continuously obstructing the river flow and demolishing the carp habitats and spawning within the Halda River extremely. Most of the river bends are potential carp breeding grounds along the river stretch, and the low river flow during pre-monsoon is also impacting the sustainability of the aquatic ecosystem. To understand the issues behind the endangering Halda River, this study conducted a sustainability analysis through the river planform, stage trend, and frequency analyses. The planform analysis showed the encroachment of the river impacting the river bends, significant for aquaculture over the last three decades, whereas the stage trends showed the low availability water scenario in these four locations of the river stretch. Besides, the frequency analysis reviewed the threshold minimum flow for the survival of the aquatic habitat, showing that the flow during the pre-monsoon is unsuitable and unacceptable for the survival of the fish habitats using Gumbel distribution. Conservation of the Halda River is a national priority due to its unique ecological and commercial importance, and it is expected that the proposed PPP framework will ensure the long-term sustainability of the river ecosystem. This article is analysing the existing situation of the Halda River and proposing a joint effort from government and private organisation through the PPP model for sustainable ecosystem management as well as the economic benefits of the country. Working together, each of the stakeholders will find direct benefits and can be instrumental for the survival of the Halda River.

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Ichthyofauna of the river Halda, Chittagong, Bangladesh

Cited by 18 publications

References 9 publications

A preliminary study on fish fauna of the Passur River in Bangladesh

A preliminary study on fish fauna of the Passur River in Bangladesh

A sustainability study of the flow regulation impacts by dams in a carp breeding river using the hydrodynamic model and building block analysis

A sustainability analysis on the trends and frequency of the channel flow of a carp breeding river against human interventions and governing public–private partnership (PPP) as adaptation

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