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1,329 results on '"Chang, Scott X."'

21. Emerging contaminants: A One Health perspective

Author

Wang, Fang, Xiang, Leilei, Sze-Yin Leung, Kelvin, Elsner, Martin, Zhang, Ying, Guo, Yuming, Pan, Bo, Sun, Hongwen, An, Taicheng, Ying, Guangguo, Brooks, Bryan W., Hou, Deyi, Helbling, Damian E., Sun, Jianqiang, Qiu, Hao, Vogel, Timothy M., Zhang, Wei, Gao, Yanzheng, Simpson, Myrna J., Luo, Yi, Chang, Scott X., Su, Guanyong, Wong, Bryan M., Fu, Tzung-May, Zhu, Dong, Jobst, Karl J., Ge, Chengjun, Coulon, Frederic, Harindintwali, Jean Damascene, Zeng, Xiankui, Wang, Haijun, Fu, Yuhao, Wei, Zhong, Lohmann, Rainer, Chen, Changer, Song, Yang, Sanchez-Cid, Concepcion, Wang, Yu, El-Naggar, Ali, Yao, Yiming, Huang, Yanran, Cheuk-Fung Law, Japhet, Gu, Chenggang, Shen, Huizhong, Gao, Yanpeng, Qin, Chao, Li, Hao, Zhang, Tong, Corcoll, Natàlia, Liu, Min, Alessi, Daniel S., Li, Hui, Brandt, Kristian K., Pico, Yolanda, Gu, Cheng, Guo, Jianhua, Su, Jianqiang, Corvini, Philippe, Ye, Mao, Rocha-Santos, Teresa, He, Huan, Yang, Yi, Tong, Meiping, Zhang, Weina, Suanon, Fidèle, Brahushi, Ferdi, Wang, Zhenyu, Hashsham, Syed A., Virta, Marko, Yuan, Qingbin, Jiang, Gaofei, Tremblay, Louis A., Bu, Qingwei, Wu, Jichun, Peijnenburg, Willie, Topp, Edward, Cao, Xinde, Jiang, Xin, Zheng, Minghui, Zhang, Taolin, Luo, Yongming, Zhu, Lizhong, Li, Xiangdong, Barceló, Damià, Chen, Jianmin, Xing, Baoshan, Amelung, Wulf, Cai, Zongwei, Naidu, Ravi, Shen, Qirong, Pawliszyn, Janusz, Zhu, Yong-guan, Schaeffer, Andreas, Rillig, Matthias C., Wu, Fengchang, Yu, Gang, and Tiedje, James M.

Published
2024
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28. Concurrent and rapid recovery of bacteria and protist communities in Canadian boreal forest ecosystems following wildfire

Author

Dai, Zhongmin, Lv, Xiaofei, Ma, Bin, Chen, Na, Chang, Scott X, Lin, Jiahui, Wang, Xuehua, Su, Weiqin, Liu, Huaiting, Huang, Yanlan, Hu, Caixia, Luo, Yu, Dahlgren, Randy A, and Xu, Jianming

Subjects
Environmental Sciences, Soil Sciences, Bacteria, Protist, Wildfire, Recovery, Fire chronosequence, Responsive OTUs, Biological Sciences, Agricultural and Veterinary Sciences, Agronomy & Agriculture, Soil sciences
Abstract

Wildfire plays an important role in restructuring bacterial and protist taxonomic and functional communities in forest ecosystems. Yet, the recovery of bacterial and protist communities following wildfire has not been rigorously investigated across long-term wildfire chronosequences. We compared changes in bacterial and protist alpha diversity, community composition, co-occurrence networks and determinant edaphic factors between burnt and unburnt (reference) soils at 11 different sites representing a 76-year wildfire chronosequence in Canadian boreal forests. The fire increased bacterial and protist alpha diversity and altered community composition (beta diversity) as compared to the site-specific controls during the early recovery stage (30 years) recovery stages. Bacterial and protist communities showed similar patterns of change across the wildfire chronosequence. The post-fire recovery of bacterial communities was associated with changes in soil chemical properties (e.g., nutrient status and pH) and vegetation succession. The protist community assembly was co-influenced by changes in bacterial communities and vegetation succession/soil properties. The concurrent recovery of bacterial and protist communities, and their influencing factors of vegetation and soil properties, imply the above- and belowground living communities are strongly linked in wildfire-perturbed forest ecosystems.

Published
2021

29. Biochar modulating soil biological health: A review

Author

Bolan, Shiv, Sharma, Shailja, Mukherjee, Santanu, Kumar, Manish, Rao, Ch. Srinivasa, Nataraj, K.C., Singh, Gurwinder, Vinu, Ajayan, Bhowmik, Arnab, Sharma, Harmandeep, El-Naggar, Ali, Chang, Scott X., Hou, Deyi, Rinklebe, Jörg, Wang, Hailong, Siddique, Kadambot H.M., Abbott, Lynette K., Kirkham, M.B., and Bolan, Nanthi

Published
2024
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48. Elevated temperature shifts soil N cycling from microbial immobilization to enhanced mineralization, nitrification and denitrification across global terrestrial ecosystems

Author

Dai, Zhongmin, Yu, Mengjie, Chen, Huaihai, Zhao, Haochun, Huang, Yanlan, Su, Weiqin, Xia, Fang, Chang, Scott X, Brookes, Philip C, Dahlgren, Randy A, and Xu, Jianming

Subjects
Climate Action, Archaea, Denitrification, Ecosystem, Nitrification, Nitrogen, Soil, Soil Microbiology, Temperature, climate change, elevated temperature, functional genes, microbial carbon metabolism, nitrogen cycling, nitrous oxide, plant carbon, Environmental Sciences, Biological Sciences, Ecology
Abstract

We assessed the response of soil microbial nitrogen (N) cycling and associated functional genes to elevated temperature at the global scale. A meta-analysis of 1,270 observations from 134 publications indicated that elevated temperature decreased soil microbial biomass N and increased N mineralization rates, both in the presence and absence of plants. These findings infer that elevated temperature drives microbially mediated N cycling processes from dominance by anabolic to catabolic reaction processes. Elevated temperature increased soil nitrification and denitrification rates, leading to an increase in N2 O emissions of up to 227%, whether plants were present or not. Rates of N mineralization, denitrification and N2 O emission demonstrated significant positive relationships with rates of CO2 emissions under elevated temperatures, suggesting that microbial N cycling processes were associated with enhanced microbial carbon (C) metabolism due to soil warming. The response in the abundance of relevant genes to elevated temperature was not always consistent with changes in N cycling processes. While elevated temperature increased the abundances of the nirS gene with plants and nosZ genes without plants, there was no effect on the abundances of the ammonia-oxidizing archaea amoA gene, ammonia-oxidizing bacteria amoA and nirK genes. This study provides the first global-scale assessment demonstrating that elevated temperature shifts N cycling from microbial immobilization to enhanced mineralization, nitrification and denitrification in terrestrial ecosystems. These findings infer that elevated temperatures have a profound impact on global N cycling processes with implications of a positive feedback to global climate and emphasize the close linkage between soil microbial C and N cycling.

Published
2020

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