Results 61 to 70 of about 2,548 (157)

不同土地利用方式对红壤微生物多样性的影响

open access: yesShuitu Baochi Xuebao, 2003
试验采用碳素利用(BIOLOG)及磷酸酯脂肪酸(PLFA)法,研究了8种供试红壤微生物群落的功能多样性和结构多样性。两种方法均表明土地利用方式能显著影响微生物的多样性。采用磷酸酯脂肪酸法无需培养就能鉴别土壤微生物的组成结构,试验表明总PLFA含量与微生物生物量呈显著相关。碳素利用法的研究结果显示,茶叶园土中微生物对各类碳源的利用能力均很低,呈现出非常独特的微生物功能多样性。
姚槐应 何振立 黄昌勇
doaj   +2 more sources

Microbial communities of the Red Sea sponge Carteriospongia foliascensand genomic characterization of the dominated sponge symbiont “CandidatusSynechococcus spongiarum” [PDF]

open access: yes, 2014
海绵是一种最古老最原始的多细胞动物,因其丰富的潜在天然活性产物而备受关注。海绵分布范围广泛且具有重要的生态学意义。海绵与微生物存在广泛且紧密的联系,这方面已经有相当多的研究报道,但是对海绵Carteriospongiafoliascens仍未有关于微生物群落结构的研究。我们从沙特阿拉伯红海沿岸采集了海绵C.foliascens的组织样品并对其微生物群落组成进行分析。研究表明,海绵C.foliascens微生物群落结构非常简单,组织中OTU的数目低于100,微生物多样性低于周围水体 ...
高兆明
core  

Succession of bacterial community structure and potential significances along the sediment core spanning approximately 20 megaannum years in the South China Sea [PDF]

open access: yes, 2017
深海生物圈包括细菌、古菌和真菌生态系统,生物多样性特征十分独特,并在不同地质时间尺度上表现出不同的特点。通常,微生物的群落结构随周围地球化学条件的变化而发生改变。迄今为止深海生物圈的研究几乎总是关注地球化学循环与微生物群落之间的关系,然而微生物的群落结构与深度距离或地质年龄距离之间的关系,却很少有人研究阐明。这种关系的构建对于确定微生物的分布是否可以反映沉积历史和地质时间是至关重要的。同时,微生物群落与生物地球化学循环、沉积物性质以及海底环境中地质事件之间的关系也仍需进一步探究。 (1 ...
梁攀
core  

Research progress on the response characteristics and indicative significance of microorganisms to seawater intrusion [PDF]

open access: yes
Seawater intrusion is a global environmental geological issue that poses a serious threat to the water supply security and ecological environment of coastal cities.
Chuanshun ZHI   +4 more
core   +1 more source

Study on microbial community and bioavailability of heavy metals during bioturbation in mangrove sediment [PDF]

open access: yes, 2017
红树林湿地位于陆海交错带,为陆源重金属污染物进入海洋的重要缓冲带。在中国红树林生态系统中,红树植物根系扰动,互花米草入侵以及底栖蟹类扰动是红树林生态系统典型的生物扰动行为,对红树林湿地重金属迁移转化及生物有效性产生深刻的影响。本研究选取入侵植物互花米草、底栖动物蟹类和三种红树植物(白骨壤、秋茄、桐花树)为研究对象,以土壤-植物根系-微生物-土壤动物相互作用的关键区域--植物根际区域和蟹类生存繁殖的场所--蟹类洞为切入点,以红树林湿地典型重金属Cd,Cu,Pb为目标重金属 ...
曾钦辉
core  

Response of Microbial Community Structure and Diversity to Nitrogen Deposition in Soils of Pinus yunnanensis Forest of the Central Yunnan Plateau [PDF]

open access: yes
[Objective] To study the characteristics of changes in chemical properties and diversity and structural composition of soil microbial communities in Pinus yun-nanensis soils on the Central Yunnan Plateau under nitrogen deposition, and to analyze the ...
DENG Qiujiang   +6 more
core   +1 more source

Distribution of cell size of environmental bacteria and its implication with phylogeny and ecological significances [PDF]

open access: yes, 2017
微生物的细胞大小是其最基本且重要的特征之一,和生物量、生长速率等其他生态学参数一并,反映出微生物群落中的资源配置策略、生态系统中群落结构以及食物网的结构分布等,有助于对应用生态学,特别是在生物量、能量流动、物质循环和生态系统功能等方面的理解提供理论基础。目前,绝大多数环境微生物的分子生态学研究仅局限于微生物的相对丰度或细胞个数绝对丰度的分析,忽略了细胞大小的生态学意义。 本研究以粒径分级过滤操作和高通量测序技术,分析污水处理厂活性污泥、出水、实验室生物反应器和海水样品中微生物细胞的大小分布 ...
胡文博
core  

Mechanism for the Influence of Saccharomyces cerevisiae on Microbial Community Succession during Nongxiangxing Baijiu Fermentation [PDF]

open access: yes
The changes in the microbial niche and community assembly of fermented grains for Nongxiangxing baijiu during fermentation by Saccharomyces cerevisiae were analyzed to explore the mechanism for the influence of inoculation with S.
WANG Shuanghui, MA Shiyuan, LI Zijian, SONG Chuan, DAI Hancong, SHAO Yan, HUANG Dan, LUO Huibo
core   +1 more source

Application of feed probiotics from marine animal for juvenile abalone aquaculture [PDF]

open access: yes, 2017
我国海水养殖业的迅猛发展,带来了巨大的社会效益和经济效益,同时也面临了诸如养殖病害频发、海水养殖动物生长缓慢、沿海水质恶化等一系列问题,成为制约水产养殖业健康发展的瓶颈。海洋动物源饲用益生菌以其促进养殖动物生长、提高养殖动物免疫功能、防病抗病力、且无污染、无毒害等特点,逐渐成为水产养殖应用的新焦点。源自杂色鲍(Haliotisdiversicolor)肠道的两株细菌,同温层芽孢杆菌(BacillusstratosphericusA3440)和海洋褐色杆菌 ...
凌宇恒
core  

Differences in Functional Characteristics and Microbial Community Structures of Three Types of High-Temperature Daqu [PDF]

open access: yes
This study investigated the differences in the physicochemical indexes, volatile flavor substances and microbial community composition of three different colored Daqu (black, yellow and white).
LIANG Erhong, LI Jinyang, LI Weiwei, ZHU Hua, WANG Kun, ZHANG Chengnan, LIANG Xin, CHEN Xi, SUN Baoguo, LI Xiuting
core   +1 more source

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