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Secondary data of fish landing was collected from Patharghata fish landing station of Bangladesh during 2007 and 2017 to evaluate the Catch Diversity Index, which is a measure of fish composition/diversity from the catch volume. ANOVA performed on the data exhibited significant variation between months and years, which confirms a change in fish diversity over a period of time. A more detailed analysis is needed to link the data bank with climate change.
Secondary data of fish landing was collected from Patharghata fish landing station of Bangladesh during 2007 and 2017 to evaluate the Catch Diversity Index, which is a measure of fish composition/diversity from the catch volume. ANOVA performed on the data exhibited significant variation between months and years, which confirms a change in fish diversity over a period of time. A more detailed analysis is needed to link the data bank with climate change.
Secondary data of fish landing was collected from Patharghata fish landing station of Bangladesh during 2007 and 2017 to evaluate the Catch Diversity Index, which is a measure of fish composition/diversity from the catch volume. ANOVA performed on the data exhibited significant variation between months and years, which confirms a change in fish diversity over a period of time. A more detailed analysis is needed to link the data bank with climate change.
Secondary data of fish landing was collected from Patharghata fish landing station of Bangladesh during 2007 and 2017 to evaluate the Catch Diversity Index, which is a measure of fish composition/diversity from the catch volume. ANOVA performed on the data exhibited significant variation between months and years, which confirms a change in fish diversity over a period of time. A more detailed analysis is needed to link the data bank with climate change.
International Journal of Fisheries and Aquatic Studies
Consequences of climate change on fish diversity in Dekhar Haor Bangladesh2019 •
The study has explored the implications of climate change on fish biodiversity as experienced by the local people of Dekhar Haor. It also expressed the local community's perceptions about the manifestations and consequences of climate change. In the study area, about 77.5% of people were involved with full-time fishing and 16.3% with part-time fishing. About 78.33% respondents thought that the weather has changed abruptly within the last 10 years. The study showed that the first and foremost factor is high temperature (100%). Considering biodiversity aspects, a total of 63 species under 20 families were found during the study period whereas 80 fish species under 29 families found 10 years back. The species availability status was remarked in four categories and obtained as 22 species highly available, 25 species moderately available, 16 species very low in availability and 17 species are not available. Alteration in several climatic factors like temperature, rainfall, increased drought, siltation and early flood caused overall 21.25% fish biodiversity loss where 16.67% carps, 27.27% catfishes, 10% barbs and minnows, 20% snakeheads, 20% eels, 23.08% perches, 50% featherbacks, 33.33% loaches and 16.67% miscellaneous species have been lost over a decade. Climate change in Dekhar Haor resulted in a shift to the breeding season, reduced fish biodiversity, wide variations in fish growth and taste.
Bangladesh is ranked 3rd largest in inland fisheries in Asia behind China and India.The aquatic biodiversity of the country has been attributed to the world’s one of the largest wetlands (Bengal Delta) and three large river systems (Brahmaputra, Ganges and Jamuna) that flow from the Himalayan Mountains into the Bay of Bengal. Huge inland fisheries resources supply fish and other aquatic animals and plants to millions of people living in the Delta. Recent acceleration of production from culture fishery (1.46 million tons of fish) in Bangladesh has yet to ease fishing pressure in large rivers and other water bodies. It is expected that the demand for fish will reach over 4 million tons by year 2020. Unfortunately, over-harvesting of fish is likely to continue and place greater pressure on most of the water bodies. The country will face the biggest risks from global warming in the next 30 years. This has already been sinking over wintering habitat for the fish species Due to the decrea...
International Journal of Fisheries and Aquatic Studies
Seasonal variation and fish assemblage at Hakaluki Haor, Moulvibazar, Bangladesh2023 •
Wetlands in Bangladesh have undergone rapid degradation, primarily attributable to a range of factors. These factors include a marked increase in population, extensive water diversion for irrigation purposes, depletion of swamp forests, as well as other natural and anthropogenic causes. Hakaluki Haor is a vast wetland area located at North East in Bangladesh provides habitat for a diverse range of fish species. Due to natural and anthropogenic causes, fish species are declining in the Hakaluki Hoar. Fish species are declining primarily due to the utilization of harmful gear, the drying of beels every year, and overexploitation. The aim of the research was to assess the occurrence of various fish species in different seasons, their distribution, and conservation status. The research was carried out over the course of three seasons (summer, autumn, and winter) spanning from September 2017 to August 2018. The study utilized a mixed methodology approach to investigate the fish assemblage, which included examining the fish catch on boats along with the fish available in the nearest assembling center (fish market). In addition, the Shannon-Weaver index was followed to recognize the species diversity (H), richness (D), and Evenness (e). The research documented the presence of 64 fish species that were classified into 25 different genera, and 24 families across 10 orders. The order Cypriniformes was the most prevalent, constituting 42% of the total number of species identified. Other orders such as Siluriformes (22%), Perciformes (16%), Channiformes (6%), and Clupeiformes (5%) also demonstrated a considerable variety of fish species, although Cypriniformes had the highest dominance with 42% of the total species documented. Additionally, the research determined that among the complete assemblage of fish species identified, a total of 14 (18.88%) were classified as species facing threats. Based on the analysis, 6.25% are vulnerable, 12.5% endangered, and 3.12% are critically endangered as per IUCN Redlist. The research observed the Shannon-Weaver diversity (H), richness (D), and evenness (e) values for the fish species, which were found to be 2.47, 6.28, and 0.65, respectively. Moreover, participants retorted that the present income from fishing had decreased as compared to five years ago. The research finds that anthropogenic pressure is one of the key reasons to fish decline at Hakaluki Haor. According to the findings of the current research, community-based wetland conservation and management have been proposed as a viable and sustainable strategy for augmenting the fish species abundance.
2021 •
The study was conducted to identify the present status of fish diversity in Soma Nadi Jalmohal of Sunamganj for a period of 11 months from June 2013 to April 2014. The study was done by questionnaire interviews (QI) of fishers, focus group discussions (FGD), key informant interviews (KII) and secondary data collection. A total of 56 species of fishes including prawn species belonging to 21 families were recorded from the jalmohal where Cyprinidae was the most dominant family contributing 16 species. The present availability status of fish species was remarked in three categories and obtained as 26 commonly available (47%), 18 moderately available (32%) and 12 rarely available species (21%). Among 56 available species, 8 species of carps, 12 species of catfishes, 9 species of barbs and minnows, 4 species of snakeheads, 4 species of eels, 10 species of perches, 3 species of loaches and other miscellaneous 6 species including 3 species of prawns were listed. The highest diversified group was catfishes (21.43%). Of 54 threatened fish species listed by IUCN (2000), only 20 species were found during the study period where 7 species were commonly available, 9 species were moderately available and 4 species were rarely available in the study area. The results of the study is implying that fish diversity of the jalmohal have been declining gradually due to some manmade and natural causes such as dewatering, sedimentation, overfishing, use of illegal fishing gears, catching of brood fishes etc. Community based fisheries management, use of appropriate fishing gears, sanctuary establishment and management, implementation of fish laws and regulations, fingerling stocking and dredging of beels and canals can play a great role in conserving fish diversity.
2023 •
Transatlantic Symposium on Sustainable Development in Higher Education
From Pathological Bifurcations to Meaningful Planetary Change Agents2023 •
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Asynchronous Edward: Comparing Online Responses to Gender in Christopher Marlowe's <i>Edward II</i> and Elizabeth Cary's The History of the Most Unfortunate Prince Edward II2022 •
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Mammalian Genome
Meeting report: 11th international mouse genome conference1998 •
Journal of Materials Science
Synthesis, characterization and in situ monitoring of the mechanochemical reaction process of two manganese(II)-phosphonates with N-containing ligands2018 •
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