检索结果-南通市图书馆

cold seeps Associated with Structured Benthic Communities: More Accurate Identification and Evaluation Using a New Multibeam Survey Methodology in the Offshore Southern Colombian Caribbean

引用

International Journal of Geosciences 2016年第5期7卷 761-774页

作者： Adrian Digby Vladimir Puentes Jorge León Lionel Fray Associates Katy Texas USA Aquabiosfera & Anadarko PC Inc. Woodlands Texas USA Anadarko Colombia Bogota Colombia

A new methodology was developed to identify cold seeps and structured benthic communities associated, which was applied for the first time in the offshore southern Colombian Caribbean. The integral method consists on a new processing of double-coverage (200%) high-resolution backscatter data combined with bathymetric information;validation was done correlating identified gas plumes, seabed cores and drift camera surveys. Results showed that the elimination of artefacts and the increased signal of the backscatter data allowed accurate plotting of seep boundaries and categorization of seeps into an activity catalogue, with more than 200 seeps identified. Most seeps have chemosynthetic communities associated and data analysis from a previous survey showed two ridges with hard ground as the only possible areas for the development the of deep- water corals. Seep results were compared with designated Areas of Significance for Biodiversity (ASB) identifying seeps both within and outside the ASBs, and showing that the presence of seeps and chemosynthetic communities associated were driven more by geological processes than for big-scale seabed morphology, since they were found in both plains and ridges. This methodology allows an accurate seabed map of structured benthic communities, which may work as a precise geo-hazard map to ensure the oil & gas industry can avoid these areas of shallow gas for further developments, and as a map of deep-water structured benthic communities with environmental significance.

关键词： Backscatter cold seeps Chemosynthetic Communities Southern Colombian Caribbean

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Interactions of Microplastics and Methane Seepage in the Deep-Sea Environment

引用

Engineering 2023年第10期29卷 159-167页

作者： Jing-Chun Feng Zhifeng Yang Wenliang Zhou Xingwei Feng Fuwen Wei Bo Li Chuanxin Ma Si Zhang Linlin Xia Yanpeng Cai Yi Wang Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) Guangzhou 511458China Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds Institute of Environmental and Ecological EngineeringGuangdong University of TechnologyGuangzhou 510006China Key Laboratory of Gas Hydrate Guangzhou Institute of Energy ConversionChinese Academy of SciencesGuangzhou 510640China Guangzhou Center for Gas Hydrate Research Chinese Academy of SciencesGuangzhou 510640China

Microplastics(MPs)are important exempla of the Anthropocene and are exerting an increasing impact on Earth’s carbon *** huge imbalance between the MPs floating on the marine surface and those that are estimated to have been introduced into the ocean necessitates a detailed assessment of marine MP ***,we demonstrate that cold seep sediments,which are characterized by methane fluid seepage and a chemosynthetic ecosystem,effectively capture and accommodate small-scale(<100μm)MPs,with 16 types of MPs being *** abundance of MPs in the surface of the sediment is higher in methane-seepage locations than in non-seepage *** seepage is beneficial to the accumulation,fragmentation,increased diversity,and aging of *** turn,the rough surfaces of MPs contribute to the sequestration of the electron acceptor ferric oxide,which is associated with the anaerobic oxidation of methane(AOM).The efficiency of the AOM determines whether the seeping methane(which has a greenhouse effect 83 times greater than that of CO_(2)over a 20-year period)can enter the atmosphere,which is important to the global methane cycle,since the deep-sea environment is regarded as the largest methane reservoir associated with natural gas hydrates.

关键词： Microplastics Anaerobic oxidation of methane cold seeps Diversity index Fragmentation Gas hydrates

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Deuterobiosphere the Chemosynthetic Second Biosphere of the Globe. A First Review

引用

Integrative Zoology 2008年第2期3卷 101-114页

作者： Francis D.POR The Scientific Collections The Life Sciences InstituteThe Hebrew UniversityIsrael

With the discovery of Ophel, a chemosynthesis-based continental subterranean environment (Por 2007), it becameevident that such environments, previously known only from the sea , are spanning the world as a parallel biosphere,the deuterobiosphere. In this preliminary contribution the different known biomes of the deuterobiosphere arereviewed and some general and comparative features are listed.

关键词： anchialine systems chemosynthetic environments cold seeps deuterobiosphere hot vents Ophel thiobios

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：