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71.
Md. Nazrul Islam Daisuke Kitazawa 《Mitigation and Adaptation Strategies for Global Change》2013,18(6):869-888
Bangladesh has a large aerial extent of freshwater wetlands for her deltaic characteristics. In 1970, the total area of wetlands in Bangladesh is estimated to be 70000–80000 km2, approximately, i.e., 50 % of total national land area. In the recent years, most of these wetlands are being lost and degraded primarily because of flood control projects, irrigation and agricultural activities and others human interference. Unfortunately, over the last three decades in the name of wetland development, local habitats were not taken care of. In this paper, the stakeholder and scenario analyses are employed for measuring public views towards wetlands degradation in Bangladesh. Involvement of stakeholders helps reconcile their different conflicting interests in wetlands, hence creating a common understanding about the problem under study. An exploratory scenario analysis illustrates different themes fulfilled by the wetlands and their associated services in case study Chalan Beel. The Chalan Beel once covered an area of approximately 651,230 acres in 1967. Currently, the permanent flooded area of the Chalan Beel has been reduced to about 18,120 acres. The scenarios show that most of the wetlands in Bangladesh are converted into agricultural lands, settlements, roads, and highways. Aquatic plants and animals are lost and endangered due to human interference and natural disturbance. The government, policymakers and some private organizations are trying to design suitable policy for wetland management but they are not able to reach this goal. It is observed that the local and national policies are facing complexities to create an effective regime to set aside the wetlands management policy in Bangladesh. In this context, this paper proposed an Increased Public Awareness (IPA) policy model that could be pathways for both short and long-term solutions of wetlands degradation in developing nations like Bangladesh. 相似文献
72.
Md. Nazrul Islam Daisuke Kitazawa Thomas Hamill Ho-Dong Park 《Mitigation and Adaptation Strategies for Global Change》2013,18(4):449-470
This paper explores mitigation scenarios for toxic cyanobacteria blooms in Lake Kasumigaura is located about 60–90 km northeast of Tokyo, in the southeast of Ibaraki Prefecture, Japan. Dominant species of cyanobacteria (Microcystis aeruginosa, Microcystis viridis and Microcystis ichthyoblabe) produce highly potent toxins as (Microcystin-(Leucine + Arginine, MC-LR), Microcystin-(Arginine + Arginine, MC-RR) and Microcystin-(Tyrosine + Arginine, MC-YR) in the Lake. Toxin production is generally the result of two major factors-natural processes and human interferences. Both factors have an extreme influence on the generation of cyanobacteria toxins within lake ecosystems. To address these factors, we propose two concepts for mitigation. The first concept is intended for examining the natural process of toxin production behavior within the lake and the second concept is used for evaluating inflow of wastes and nutrients from human activities that form toxins. Our research aims to combine both strategies to mitigate impacts of toxins, by examining trends of cyanobacteria nutrient sources, buoyancy regulations that influence bloom formation, and the environmental conditions that spur blooms. This study proposes a simple IMPACT (Integrating Mitigation Policies for Aquatic Cyanobacteria Toxin) model for diminution strategies of harmful algal blooms and their toxins. A mixed-methods approach is employed, nested within the Environmental Systems Analysis (ESA) tools e.g. scenario analysis and stakeholder analysis. The quality of the lake is assessed through a combination of observation and field study analysis. The findings suggest that successful mitigation of cyanobacteria toxins is highly dependent on multi-functional, multi-stakeholder involvement, and relevant intergovernmental policy. Without integrating approaches among different stakeholders, diverse socioeconomic activists, local-national policymakers and effective policy measures, prevention of cyanobacteria toxin production within lakes becomes extremely complex and difficult. The proposed IMPACT model could be a decision framework for identifying suitable policies that mitigate cyanobacteria impacts. 相似文献
73.
Ahmed MK Parvin E Arif M Islam MM Akter MS Khan MS 《Environmental monitoring and assessment》2011,182(1-4):197-204
The present investigation was undertaken to study the induction of DNA damage by lead chloride (PbCl(2)) in freshwater climbing perch Anabas testudineus using alkaline single cell gel electrophoresis (comet assay). Based on the LC(50) values of lead chloride of A. testudineus three different concentrations viz., 0.1, 1.0 and 2.0 mg/L were selected to expose fish. The DNA damage was observed in the gill, kidney and liver tissue as the percentage of DNA in comet tails and comet heads in the tissue of the exposed fish. DNA damage at different concentrations showed sensitivity to particular tissue. The liver tissue exhibited significantly (p < 0.01) higher DNA damage, followed by kidney and gill. However, the DNA damage was found to be dose dependent; at 2 mg/L of PbCl(2) the tail and head DNA of liver tissue were 57.84% and 39.49%, in kidney tissue the values were 52.36% and 44.97% whereas in gill tissue the values were 48.86% and 48.96% respectively. The current study explored the utility of the comet assay for in vivo laboratory studies using A. testudineus species for screening the genotoxic potential of lead chloride. 相似文献
74.
Das Atanu Kumar Islam Md. Nazrul Billah Md. Morsaline Sarker Asim 《Environmental science and pollution research international》2021,28(23):28993-29008
Environmental Science and Pollution Research - Municipal solid waste (MSW) represents an inevitable by-product of human activity and a major crisis for communities across the globe. In recent... 相似文献
75.
Environmental Science and Pollution Research - Korotoa River is one of the most important urban rivers in Bangladesh for its utilization in various activities like agriculture, aquaculture,... 相似文献
76.
Sarker Aniruddha Islam Tofazzal Rahman Shahinoor Nandi Rakhi Kim Jang-Eok 《Environmental science and pollution research international》2021,28(39):54448-54465
Environmental Science and Pollution Research - The uncertain fate and transport pathways of applied pesticides are the key hidden threats with respect to the safety and quality evaluation of... 相似文献
77.
The Phan Cong Jain Vipin Purnomo Eko Priyo Islam Md. Monirul Mughal Nafeesa Guerrero John William Grimaldo Ullah Sana 《Environmental science and pollution research international》2021,28(46):65150-65159
Environmental Science and Pollution Research - The “environment” has become one of the important and debatable topics of the world and policymakers identifying the new predictors of CO2... 相似文献
78.
The abundance of ammonia-oxidizing bacteria and archaea and their amoA genes from the aerobic activated sludge tanks, recycled sludge and anaerobic digesters of a full-scale wastewater treatment plant (WWTP) was determined. Polymerase chain reaction and denaturing gradient gel electrophoresis were used to generate diversity profiles, which showed that each population had a consistent profile although the abundance of individual members varied. In the aerobic tanks, the ammonia-oxidizing bacterial (AOB) population was more than 350 times more abundant than the ammonia-oxidizing archaeal (AOA) population, however in the digesters, the AOA population was more than 10 times more abundant. Measuring the activity of the amoA gene expression of the two populations using RT-PCR also showed that the AOA amoA gene was more active in the digesters than in the activated sludge tanks. Using batch reactors and ddPCR, amoA activity could be measured and it was found that when the AOB amoA activity was inhibited in the anoxic reactors, the expression of the AOA amoA gene increased fourfold. This suggests that these two populations may have a cooperative relationship for the oxidation of ammonia. 相似文献
79.
Chhay Leaksmy Reyad Md Amjad Hossain Suy Rathny Islam Md Rafiqul Mian Md Manik 《Journal of Material Cycles and Waste Management》2018,20(3):1761-1770
Journal of Material Cycles and Waste Management - In the developing countries, the inadequacy of basic waste data is a significant obstacle for municipal solid waste management. To evaluate an... 相似文献
80.
We are pleased to have been asked to introduce this special issue of Natural Resources Forum dedicated to women and natural resources management. The issues discussed in the articles on water and energy resources, artisanal mining and sanitation, and how women can improve the management of their environment, were among the key concerns expressed at the Fourth World Conference on Women held in Beijing in September 1995. 相似文献