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International Symposium on Green Technology and Ecosystem health

作者： Zhongyue Shen Xiaoe Yang K.D.Balke Dept of Earth Sciences Zhejiang University moe key lab of environ remediat & ecol health Zhejiang University Center of Applied Geosciences University of Tbingen

With industrial developments, we have resulted in the worsen environment and lack of clean water, not only in the surface but also in the underground water. Recent investigation shows that about 70% of surface water t... 详细信息

关键词： infiltration plant ecological purification phytoremediation water recharge

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Effects of COD/N ratio and DO concentration on simultaneous nitrification and denitrification in an airlift internal circulation membrane bioreactor

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Journal of environmental Sciences 2008年第8期20卷 933-939页

作者： Meng Qingjuan Yang Fenglin Liu Lifen Meng Fangang Dalian Univ Technol Sch Environm & Biol Sci & Technol MOE Key Lab Ind Ecol & Environm & Engn Dalian 116024 Peoples R China Tech Univ Berlin Dept Chem Engn D-10623 Berlin Germany

The effects of chemical oxygen demand and nitrogen(COD/N)ratio and dissolved oxygen concentration(DO)on simultaneous nitrification and denitrification(SND)were investigated using an airlift internal circulation membrane bioreactor(AIC-MBR)with synthetic *** results showed that the COD efficiencies were consistently greater than 90% regardless of changes in the COD/N *** the COD/N ratio of 4.77 and 10.04,the system nitrogen removal efficiency became higher than 70%.However,the nitrogen remova...

关键词： simultaneous nitrification and denitrification(SND) chemical oxygen demand and nitrogen(COD/N)ratio dissolved oxygen(DO)concentration

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Effect of Mariculture on Planktonic Protist: A Case Study in a Marine Ranch of Northern Yellow Sea, China

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JOURNAL OF OCEAN UNIVERSITY OF CHINA 2024年第6期23卷 1630-1644页

作者： Zhao, Chenchen Zhang, Xiaoxin Zhang, Wenjing Xu, Ning Zhang, Xiaoli Zhao, Jianmin Zhang, Qianqian Ji, Daode Yantai Univ Sch Ocean Yantai 264003 Peoples R China Chinese Acad Sci Yantai Inst Coastal Zone Res Key Lab Coastal Environm Proc & Ecol Remediat Yantai 264003 Peoples R China Chinese Acad Sci Yantai Inst Coastal Zone Res Muping Coastal Environm Res Stn Yantai 264003 Peoples R China Qingdao Marine Sci & Technol Ctr Lab Marine Biol & Biotechnol Qingdao 266237 Peoples R China Univ Chinese Acad Sci Beijing 100049 Peoples R China

Mariculture exerts a direct influence on planktonic eukaryotic microorganisms protists. Previous studies have focused on phytoplankton, while the heterotrophic and parasitic protistan groups are unknown. Currently, in Muping Marine Ranch (MR) which is along the littoral zone of northern Yellow Sea of China, environmental DNA methods were employed to investigate the diversity and seasonal dynamics of near shore planktonic protists in response to mariculture. Through an integrated analysis of functional groups and a comparison to adjacent sea areas, we found a dominance of harmful algae blooms (HAB) species nearshore MR, and a significant reduction in the diversity of planktonic protists including photosynthetic, heterotrophic and parasitic groups. High nutrient and low salinity were suggested to drive the dominance of HAB species nearshore MR, which in return might inhibit predators, saprophytes and algal parasites. Our investigations revealed an Olisthodiscus luteus outbreak in spring, as well as significant seasonal variations in the planktonic protist community, which might be caused by the changes of temperature. The offshore hypoxia reduced the abundance of phytoplankton but increased mixotrophs and animal parasites of the protistan community nearshore MR. This study highlights the influence of mariculture on the overall community function of planktonic protists, and is helpful to assess the mariculture's impact on water health.

关键词： mariculture protist hypoxia meta-barcoding harmful algae blooms functional group

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Nature's disguise: Empirical demonstration of dead-leaf masquerade in Kallima butterflies

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ZOOLOGICAL RESEARCH 2024年第6期45卷 1201-1208页

作者： Zhang, Zeng-Tao Yu, Long Chang, Hai-Zhen Zhang, Shi-Chang Li, Dai-Qin Hubei Univ Sch Life Sci State Key Lab Biocatalysis & Enzyme Engn Wuhan 430062 Hubei Peoples R China Hubei Univ Ctr Behav Ecol & Evolut Sch Life Sci Wuhan 430062 Hubei Peoples R China Wuhan Wuluolu Expt Jr High Sch Wuhan 430070 Hubei Peoples R China Natl Univ Singapore Dept Biol Sci Singapore 117543 Singapore

Animals deploy diverse color-based defenses against predators, including crypsis, mimicry, aposematism, and masquerade. While crypsis, mimicry, aposematism have been extensively studied, the strategy of masquerade -where organisms imitate inedible or inanimate objects such as leaves, twigs, stones, and bird droppings -remains comparatively underexplored, particularly in adult butterflies. The Indian oakleaf butterfly ( Kallima inachus) exemplifies this phenomenon, with its wings resembling dead leaves, providing a classic example of natural selection. Although it has long been postulated that these butterflies evade predation by being misidentified as dead leaves, direct experimental evidence is lacking. In the current study, using domestic chicks as predators, we manipulated their prior experience with dead leaves (model objects) while maintaining constant exposure to butterflies to test whether dead-leaf masquerade provides a protective advantage by preventing recognition. Results showed a marked delay in the initiation of attacks by chicks familiar with dead leaves compared to those with no prior exposure or those exposed to visually altered leaves. Chicks with prior dead- leaf experience required a similar amount of time to attack the butterflies as they did to attack dead leaves. These findings provide the first empirical demonstration of dead- leaf masquerade in Kallima butterflies, shedding light on its evolutionary significance. Our study highlights the effectiveness of masquerade in inducing the misclassification of butterflies as inanimate objects, showcasing the precise mimicry achieved by these organisms when viewed in isolation from the model objects. This study advances our understanding of the evolution of masquerade and its role as a potent antipredator strategy in nature.

关键词： Antipredator defense Camouflage Dead- leaf butterfly Masquerade Natural selection Visual recognition

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