搜索结果: 1-12 共查到“理学 Microcystis aeruginosa”相关记录12条 . 查询时间(0.031 秒)
选择我国蓝藻水华的优势藻类铜绿微囊藻，进行人工模拟UV-B辐射连续24h照射实验，测定铜绿微囊藻生物量、生理及超微结构指标，探讨湖泊特别是高原湖泊藻类生长对UV-B辐射增强的胁迫响应.结果表明，当辐射时间达到1h时，铜绿微囊藻便开始陆续死亡，但蛋白质含量增加，且叶绿素a浓度保持稳定；当辐射时间少于4h时，细胞内超氧化物歧化酶（SOD）始终保持较高活性，细胞膜保持基本完整，细胞内类囊体和蓝藻素颗粒数...
采用广谱性固相萃取小柱富集以10g（FW）/L的密度培养三天后的苦草（Vallisneria spiralis）种植水，不同溶剂洗脱得到的各组分对铜绿微囊藻（Microcystis aeruginosa）的生长表现出不同程度的抑制，其中甲醇洗脱组分抑藻活性最强．去除该组分中的酚酸后，其抑藻活性下降了22．8%，表明酚酸参与到苦草的化感抑藻作用中．甲醇组分通过液液萃取进一步分离，得到的乙酸乙酯组分进...
对三峡水库一级支流神农溪 2008 年夏季蓝藻水华进行调查， 结果表明神农溪蓝藻水华优势种是铜绿微囊藻 ( Microcystis aeruginosa ) ，暴发水域面积约 0.2km 2 ，持续时间约 50d. 本次水华暴发与水体总磷浓度呈正相关，温度、降雨、光照和营养盐等对水华暴发具有重要影响 . 研究发现尽管神龙溪水域总体处于中富营养状态，但局部水域由于水流缓慢、水体滞留时间长、营养稀释扩...
为研究生长环境中微生物对铜绿微囊藻碳代谢的影响，本文分析太湖典型微囊藻水华样品附生菌中产碳酸酐酶（CA）细菌的比例，结果显示CA菌占11.6％；从微囊藻群体中分离获得了一株高胞外CA附生菌P201，通过ITS基因鉴定，该菌为一株荧光假单胞菌（Pseudomonas fluorescence）.并研究了该菌在不同浓度HCO-3条件下对铜绿微囊藻生长的影响，结果表明无论是高HCO-3浓度还是低HCO-...
在实验室光照黑暗交替培养下，用半胱氨酸下调黑暗起始时的氧化还原电位（ ORP ），研究低电位对铜绿微囊藻（ Microcystis aeruginosa FACHB 469 ）生长的影响，并探索低电位胁迫消除后铜绿微囊藻生长的恢复潜力 . 结果表明，在 -50～-100mV 范围内水体 ORP 越低，其对铜绿微囊藻生长的抑制作用越强 . 低 ORP 可抑制铜绿微囊藻对磷的吸收，且这种抑制程度与电位...
光照强度对铜绿微囊藻（Microcystis aeruginosa）和斜生栅藻（Scenedesmus obliqnus）生长及吸收特性的影响
铜绿微囊藻 斜生栅藻 吸收系数 比吸收系数 光照强度
2012/9/11
在不同的光照强度下，测定了铜绿微囊藻、斜生栅藻在不同生长期的藻细胞密度、粒径、叶绿素a浓度、浮游植物吸收系数以及比吸收系数.单因素方差分析表明，在整个培养周期中，光照强度对铜绿微囊藻及斜生栅藻的藻细胞密度、叶绿素a浓度以及440、675nm处吸收系数均有着显著的影响.两种藻在光照强度为50μmol／（m2·s）条件下，藻细胞密度、叶绿素a浓度及吸收系数值相对最大.相关性分析表明：藻类特征波段440...
The spatial dynamics of vertical migration by Microcystis aeruginosa in a eutrophic shallow lake: A case study using high spatial resolution time-series airborne remote sensing
The spatial dynamics of vertical migration Microcystis aeruginosa in a eutrophic shallow lake A case study using high spatial resolution time-series airborne remote sensing
2014/4/21
Time-series airborne remote sensing was used to monitor diurnal changes in the spatial distribution of a bloom of the potentially toxic cyanobacterium Microcystis aeruginosa in the shallow eutrophic w...
黑藻(Hydrilla verticillata)对铜绿微囊藻(Microcystis aeruginosa)抑制作用。
Complex interactions between the zebra mussel, Dreissena polymorpha, and the harmful phytoplankter, Microcystis aeruginosa
zebra mussel Dreissena polymorpha harmful phytoplankton Microcystis aeruginosa
2014/5/9
We report a reversal in the sign of the herbivore-phytoplankton interaction between the zebra mussel (Dreissena polymorpha) and Microcystis aeruginosa, a harmful planktonic cyanobacterium. A pair of l...
Dominance of the noxious cyanobacterium Microcystis aeruginosa in low-nutrient lakes is associated with exotic zebra mussels
the noxious cyanobacterium Microcystis aeruginosa low-nutrient lakes exotic zebra mussels
2014/5/14
To examine the hypothesis that invasion by zebra mussels (Dreissena polymorpha) promotes phytoplankton dominance by the noxious cyanobacterium Microcystis aeruginosa, 61 Michigan lakes of varying nutr...
Effects of Microcystis aeruginosa and purified microcystin-LR on the feeding behavior of Daphnia pulicaria
Effects of Microcystis aeruginosa purified microcystin-LR feeding behavior Daphnia pulicaria
2014/5/14
We investigated the mechanisms behind the negative effects of cyanobacteria on zooplankton by comparing the effects of Microcystis aeruginosa single cells, colonies, and toxins on the feeding behavior...
Daphnia growth on microcystin-producing and microcystin-free Microcystis aeruginosa in different mixtures with the green alga Scenedesmus obliquus
Daphnia growth microcystin-producing microcystin-free Microcystis aeruginosa green alga Scenedesmus obliquus
2014/5/22
The hypothesis that negative effects of Microcystis on Daphnia growth and reproduction can be explained from the presence of microcystin in the Microcystis cells was tested by comparing the effects on...