机构

• 力学研究所 [2]
• 烟台海岸带研究所 [1]

采集方式

• OAI收割 [3]

内容类型

• 会议论文 [2]
• 期刊论文 [1]

发表日期

• 2019 [1]
• 2012 [1]
• 2010 [1]

学科主题

筛选

浏览/检索结果: 共3条，第1-3条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 烟台牟平海洋牧场季节性低氧对大型底栖动物群落的生态效应 期刊论文  OAI收割 生物多样性, 2019, 卷号: 27, 期号: 2, 页码: 200-210 作者:  李宝泉   |  收藏  |  浏览/下载：21/0  |  提交时间：2020/06/17 低氧  群落结构  群落恢复  敏感种  机会种  hypoxia  community structure  community recovery  sensitive species  opportunistic species  Hypoxia is a common phenomenon in the world's oceans, especially in the shallow waters of coastal zones. Rates of hypoxia are increasing due to global climatic changes and anthropogenic activities. Hypoxia can cause mass mortality of marine animals and can have severe negative impacts on marine ecosystems. To better understand the effects of hypoxia on macrobenthic communities, a survey was carried out in the Muping Marine Ranch (Yantai) during June, August and September of 2016. Results showed that seasonal hypoxia led to changes in benthic community structure, especially in terms of species composition and dominant species. The dominant species were Polychaeta Lumbrinereis latreilli, Sternaspis scutata and Mollusca Endopleura lubrica in summer. The opportunistic species Lumbrinereis latreilli increased, whereas, sensitive species such as Leptomya minuta, Glycera chirori, Upogebia major, Pontocrates altamarimus, Eriopisella sechellensis decreased during the hypoxic period of August. Hypoxia also reduced biodiversity indices. The effect of hypoxia on abundance and biomass were not significant, mainly because of the increase in the opportunistic Lumbrinereis latreilli, which counteracted the decline in abundance and biomass of other species. Individual physiological tolerance to hypoxia was different among species. Lumbrinereis latreilli showed higher tolerance to hypoxia in dissolved oxygen (DO) = 1.0 mg/L compared to other species. Some sensitive species, such as Leptomya minuta, Upogebia major, Pontocrates altamarimus and Eriopisella sechellensis showed lower tolerance when DO < 2.5 mg/L. When DO increased to 2.5 mg/L, the macrobenthic community start to recover gradually. The recovery extent and time needed were closely related to the degree of seasonal hypoxia.   Stiction of flexural MEMS structures 会议论文  OAI收割 3rd International Conference on Digital Manufacturing and Automation, ICDMA 2012, Guangxi, China, AUG 01-02, 2012 作者:  Liu Y;  Zhang Y(张吟) 收藏  |  浏览/下载：25/0  |  提交时间：2013/02/26 Adhesion  Boundary conditions  Composite micromechanics  Manufacture  Stiction  Variational techniques  Beam bending  Beam deflection  Beam length  Constraint conditions  Contact areas  Contact separation  Elastic energy  External loads  Matching condition  MEMS-structure  Micro-cantilevers  Microcantilever beams  Principle of virtual work  Rayleigh-Ritz methods  S shape  S-shaped  Significant impacts  Variational methods   Extracting nanowire mechanical properties from three-point bendig test 会议论文  OAI收割 2010 12th IEEE Intersociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems, ITherm 2010, Las Vegas, NV, United states, June 2, 2010 - June 5, 2010 作者:  Liu Y;  Zhang Y(张吟);  Liu, Y.;  Liu, Y.;  Liu, Y. 收藏  |  浏览/下载：15/0  |  提交时间：2017/06/20 Changing trends  Elastic medium  Experimental data  Nanowire materials  Receding contact  Significant impacts  Three-point bending test  Young's Modulus