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Tropical forest loss enhanced by large-scale land acquisitions 期刊论文
NATURE GEOSCIENCE, 2020, 13 (7) : 482-+
作者:  Davis, Kyle Frankel;  39;Angelo, Jampel;  39;Odorico, Paolo
收藏  |  浏览/下载：15/0  |  提交时间：2020/06/29
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.


  
Worries over wolverines lead to lawsuit 期刊论文
FRONTIERS IN ECOLOGY AND THE ENVIRONMENT, 2020, 18 (4) : 176-176
作者:  Burton, Adrian
收藏  |  浏览/下载：1/0  |  提交时间：2019/11/27
Firefighters rescue Australia's "dinosaur trees" 期刊论文
FRONTIERS IN ECOLOGY AND THE ENVIRONMENT, 2020, 18 (2) : 62-62
作者:  Miller, Claire
收藏  |  浏览/下载：5/0  |  提交时间：2019/11/27
Sao Paulo bans some single-use plastics 期刊论文
FRONTIERS IN ECOLOGY AND THE ENVIRONMENT, 2020, 18 (2) : 63-63
作者:  Kemeny, Richard
收藏  |  浏览/下载：0/0  |  提交时间：2019/11/27
Fossil-fuel divestment picks up steam 期刊论文
FRONTIERS IN ECOLOGY AND THE ENVIRONMENT, 2020, 18 (2) : 61-61
作者:  Pelley, Janet
收藏  |  浏览/下载：0/0  |  提交时间：2019/11/27
Santa Ana winds, 90210 期刊论文
FRONTIERS IN ECOLOGY AND THE ENVIRONMENT, 2020, 18 (2) : 61-61
作者:  Dusheck, Jennie
收藏  |  浏览/下载：0/0  |  提交时间：2019/11/27
Human activities threaten protected areas in Southeast Asia 期刊论文
FRONTIERS IN ECOLOGY AND THE ENVIRONMENT, 2020, 18 (3) : 117-117
作者:  Gewin, Virginia
收藏  |  浏览/下载：0/0  |  提交时间：2019/11/27
Sustainability tips for tropical seaweed farming 期刊论文
FRONTIERS IN ECOLOGY AND THE ENVIRONMENT, 2020, 18 (2) : 65-65
作者:  Ogden, Lesley Evans
收藏  |  浏览/下载：0/0  |  提交时间：2019/11/27
Tracking elk-cattle disease transmission potential 期刊论文
FRONTIERS IN ECOLOGY AND THE ENVIRONMENT, 2020, 18 (3) : 118-118
作者:  Ogden, Lesley Evans
收藏  |  浏览/下载：0/0  |  提交时间：2019/11/27