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Recycling and metabolic flexibility dictate life in the lower oceanic crust 期刊论文
NATURE, 2020, 579 (7798) : 250-+
作者:  Zhou, Peng;  Yang, Xing-Lou;  Wang, Xian-Guang;  Hu, Ben;  Zhang, Lei;  Zhang, Wei;  Si, Hao-Rui;  Zhu, Yan;  Li, Bei;  Huang, Chao-Lin;  Chen, Hui-Dong;  Chen, Jing;  Luo, Yun;  Guo, Hua;  Jiang, Ren-Di;  Liu, Mei-Qin;  Chen, Ying;  Shen, Xu-Rui;  Wang, Xi;  Zheng, Xiao-Shuang;  Zhao, Kai;  Chen, Quan-Jiao;  Deng, Fei;  Liu, Lin-Lin;  Yan, Bing;  Zhan, Fa-Xian;  Wang, Yan-Yi;  Xiao, Geng-Fu;  Shi, Zheng-Li
收藏  |  浏览/下载：37/0  |  提交时间：2020/05/13

The lithified lower oceanic crust is one of Earth'  s last biological frontiers as it is difficult to access. It is challenging for microbiota that live in marine subsurface sediments or igneous basement to obtain sufficient carbon resources and energy to support growth(1-3) or to meet basal power requirements(4) during periods of resource scarcity. Here we show how limited and unpredictable sources of carbon and energy dictate survival strategies used by low-biomass microbial communities that live 10-750 m below the seafloor at Atlantis Bank, Indian Ocean, where Earth'  s lower crust is exposed at the seafloor. Assays of enzyme activities, lipid biomarkers, marker genes and microscopy indicate heterogeneously distributed and viable biomass with ultralow cell densities (fewer than 2,000 cells per cm(3)). Expression of genes involved in unexpected heterotrophic processes includes those with a role in the degradation of polyaromatic hydrocarbons, use of polyhydroxyalkanoates as carbon-storage molecules and recycling of amino acids to produce compounds that can participate in redox reactions and energy production. Our study provides insights into how microorganisms in the plutonic crust are able to survive within fractures or porous substrates by coupling sources of energy to organic and inorganic carbon resources that are probably delivered through the circulation of subseafloor fluids or seawater.


  
Projecting the future of an alpine ungulate under climate change scenarios 期刊论文
GLOBAL CHANGE BIOLOGY, 2018, 24 (3) : 1136-1149
作者:  White, Kevin S.;  Gregovich, David P.;  Levi, Taal
收藏  |  浏览/下载：7/0  |  提交时间：2019/04/09
Alaska  alpine ecosystems  climate change  conservation  general circulation models  habitat change  mountain goat  Oreamnos americanus  population modeling  resource selection function  
Extended Producer Responsibility: Updated Guidance for Efficient Waste Management 科技报告
来源：Institute for Global Environmental Strategies (IGES). 出版年： 2016
作者:  , OECD
收藏  |  浏览/下载：26/0  |  提交时间：2019/04/05
Resource Circulation, Sustainable Consumption &  Production  
Policy for Fostering "Sound" Recycling Industries 科技报告
来源：Institute for Global Environmental Strategies (IGES). 出版年： 2014
作者:  KOJIMA, Michikazu
收藏  |  浏览/下载：2/0  |  提交时间：2019/04/05
Resource Circulation  
Study area 2: Promoting recycling in municipal solid waste management through suitable business models: Improving the supply chain for recyclables 科技报告
来源：Institute for Global Environmental Strategies (IGES). 出版年： 2013
作者:  Sang-Arun, Janya;  Bengtsson, Magnus;  Theng Lee Chong;  Li Jinhui;  WANPEN, Piya;  MODAK, Prasad
收藏  |  浏览/下载：8/0  |  提交时间：2019/04/05
Resource Circulation