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Assessing the Ecological Consequences: Biodiversity Decline in Gopalganj, Bangladesh, under Climate Change

Journal of Geoscience and Environment Protection 2023年第9期11卷 297-316页

作者： md. akik tanjil jihan Rifat Islam md. Rajib Hossain Saif Hossain Rudba Islam Taspia Jahan Rifat Jahan md. Mustafizur Rahman md. Mirhazul Islam Department of Environmental Science and Disaster Management Bangabandhu Sheikh Mujibur Rahman Science and Technology University Gopalganj Bangladesh

This research critically examines the alarming case of biodiversity loss in Gopalganj, Bangladesh, focusing on identifying the causes of this decline and assessing its long-term impact on ecosystems and communities. The main reason is anthropogenic activities, including land conversion, and infrastructure using a comprehensive approach. This research employs a combination of primary and secondary data analysis techniques, encompassing surveys, focus group discussions, interviews, and field surveys. Findings: A staggering biological decline in ethnic diversity seems predictions point in the direction of it is an alarming trend that will take place by 2054. At the same time, the study reveals a worrying decline in vegetation and a dramatic expansion of built-up areas. In light of these findings, this paper strongly emphasizes the urgent need for immediate and coordinated conservation efforts. The proposed measures include conservation and restoration of critical areas, strong measures to reduce greenhouse gas emissions, proactive climate adaptation planning, promotion of sustainable agricultural and forestry practices, and strong public awareness campaigns to emphasize the critical importance of biodiversity conservation. Collectively, these actions are pivotal in safeguarding Gopalganj’s rich biodiversity and ensuring a sustainable future for the region and the planet at large.

关键词： Climate Change Biodiversity Loss Ecology Adaptation Future Prediction

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Preharvest application of 1-methylcyclopropene and Ethephon altered cuticular wax biosynthesis and fruit quality of apples at harvest and during cold storage

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Horticultural Plant Journal 2022年第2期8卷 143-152页

作者： Fujun Li Xinyue Zhang jihan Wang Yaping Jiang Xinhua Zhang Xiaoan Li School of Agricultural Engineering and Food Science Shandong University of TechnologyZiboShandong 255049China

To investigate the roles of Harvista(a sprayable 1-methylcyclopropene,1-MCP,available component is 150 g·hm^(-2))and Ethephon(1 mL·L^(-1))applied at preharvest in apple(Malus domestica Borkh.'Golden Delicious')fruit cuticular wax biosynthesis,the expression of genes related to fruit cuticular wax biosynthesis and ethylene biosynthesis and signaling,ethylene production rate,respiration rate,wax constituents and structure,and fruit quality were determined at harvest and during cold *** results showed that 1-MCP inhibited the expression levels of ethylene biosynthesis and signaling-related genes,decreased fruit ethylene production,and inhibited the expression of md.LACS1,md.CER6,md.CER4 and md.WSD1,which resulted in decreases in alcohols,acids,and esters content in fruit cuticular wax.1-MCP also reduced fruit dropping rate from 17.17%to 12%;maintained fruit firmness,soluble solids,titratable acidity during cold storage;showed about as one fifth in the total length and one third in the widest width of wax crack as that in control at *** contrast,Ethephon produced the opposite *** conclusion,1-MCP inhibited fruit ethylene biosynthesis and signaling,and influenced fruit cuticular wax ***,the fruit cuticular wax constituents and structure was altered,and the fruit quality were maintained at harvest and during cold *** results provide a new technology for improving apple fruit harvest and postharvest quality by preharvest application of sprayable 1-MCP.

关键词： Fruit Cuticular wax 1-Methylcyclopropene Ethylene Gene

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Difference in calcium ion precipitation between free and immobilized Halovibrio mesolongii HMY2

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Journal of Environmental Sciences 2022年第12期34卷 184-200页

作者： Huaxiao Yan Meiyu Huang jihan Wang Heding Geng Xiyu Zhang Ziyang Qiu Yongliang Dai Zuozhen Han Yudong Xu Long Meng Lanmei Zhao Maurice E.Tucker Hui Zhao College of Chemical and Biological Engineering College of Safety and Environmental EngineeringCollege of Earth Science and EngineeringShandong University of Science and TechnologyQingdao 266590China Laboratory for Marine Mineral Resources Center for Isotope Geochemistry and GeochronologyQingdao National Laboratory for Marine Science and TechnologyQingdao 266237China School of Earth Sciences University of BristolBristol BS81RJUK Cabot Institute University of BristolCantock’s CloseBristol BS81UJUK

Biomineralization has become a research focus in wastewater treatment due to its much lower costs compared to traditional ***,the low sodium chloride(NaCl)-tolerance of bacteria limits applications to only water with low NaCl ***,calcium ions in hypersaline wastewater(10%NaCl)were precipitated by free and immobilized Halovibrio mesolongii HMY2 bacteria and the differences between them were *** results show that calcium ions can be transformed into several types of calcium carbonate with a range of morphologies,abundant organic functional groups(C-H,C-O-C,C=O,etc),protein secondary structures(β-sheet,α-helix,3_(10)helix,andβ-turn),P=O and S-H indicated by P2p and S2p,and more negativeδ^(13)C_(PDB)(‰)values(-16.8‰to-18.4‰).The optimal conditions for the immobilized bacteria were determined by doing experiments with six factors and five levels and using response surface *** the action of two groups of immobilized bacteria prepared under the optimal conditions,by the 10^(th)day,Ca^(2+)ion precipitation ratios had increased to 79%-89%and 80%-88%with changes in magnesium ion *** ions can significantly inhibit the calcium ion precipitation,and this inhibitory effect can be decreased under the action of immobilized *** induced by immobilized bacteria always aggregated together,had higher contents of Mg,P,and S,lower stable carbon isotope values and less well-developed protein secondary *** study demonstrates an economic and eco-friendly method for recycling calcium ions in hypersaline wastewater,providing an easy step in the process of desalination.

关键词： Biomineralization Halovibrio mesolongii Hypersaline wastewater Calcium ion removal Intracellular aragonite

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