相关实验视频

Updated: May 24, 2025

The Benthic Exchange of O2, N2 and Dissolved Nutrients Using Small Core Incubations

The Benthic Exchange of O2, N2 and Dissolved Nutrients Using Small Core Incubations

Published on: August 3, 2016

盆地冬季季化蓝藻种子库在河口开花动态上的作用

Ellen P Preece¹, Timothy G Otten², Janis Cooke³

¹California Department of Water Resources, 3500 Industrial Blvd, West Sacramento, CA 95691, United States of America; Robertson-Bryan, Inc. 3100 Zinfandel Drive, St 300. Rancho Cordova, CA, United States of America.

|March 3, 2025

概括

河口的静态区域含有高度的蓝藻细菌过冬的细胞,作为有害藻类繁殖 (HAB) 的种子来源. 了解这些微囊种群对于管理河口生态系统至关重要.

科学领域:

环境微生物学环境微生物学
水生生态学水生生态学
欧洲化研究研究欧洲化研究

背景情况:

有害的蓝菌繁殖 (cHABs),特别是那些由Microcystis主导的,是一个日益增长的全球关注.
河口cHABs通常来自长时间停留水的上游来源,积累过冬的注射剂.
萨克拉门托-圣霍金三角洲 (三角洲) 是一个复杂的河口系统,容易出现微囊的繁殖.

研究的目的:

在三角洲沉积物中调查过冬的Microcystis种子库的数量和遗传多样性.
为了确定沉积物种库和地表水中的微囊度之间的关系.
了解微囊中过冬细胞的作用,了解河口环境中的微囊花动态.

主要方法:

定量聚合酶连锁反应 (qPCR) 用于测量沉积物中的总微囊.
从水和沉积物DNA中PCR放大蓝藻细菌特有的16S-23S ITS rDNA.
分析Microcystis基因型以评估种群多样性.

主要成果:

三角洲的静态外围地区呈现出过冬的Microcystis种子库存的最高度.
在这些静态区域的地表水中通常观察到更高的微囊度.
检测到Microcystis的高度遗传多样性,在沉积物和水柱中发现了36种独特的基因型.

结论:

在三角洲沉积物中过冬的Microcystis种群是随后开花形成的重要来源.
沉积物种子库是影响微囊花开和在大河口系统中的继承的关键因素.
河口cHAB的管理策略应考虑土冬季细胞的贡献.

关键词:

菌有害的藻类藻类繁殖河口的河口河口淡水到海洋连续性的淡水.微囊是一种微囊.种子库存种子库存

更多相关视频

Author Spotlight: Understanding Riverine Nitrogen Impacts and Primary Productivity for Effective Nutrient Management

Author Spotlight: Understanding Riverine Nitrogen Impacts and Primary Productivity for Effective Nutrient Management

Published on: July 14, 2023

Field Collection and Laboratory Maintenance of Canopy-Forming Giant Kelp to Facilitate Restoration

Field Collection and Laboratory Maintenance of Canopy-Forming Giant Kelp to Facilitate Restoration

Published on: June 7, 2024

相关概念视频

Primary Production

Primary Production

The total amount of energy acquired by primary producers in an ecosystem is called gross primary production (GPP). However, of this energy, producers use some for metabolic processes, and some is lost as heat, decreasing the amount of energy available to the next trophic level. The remaining usable amount of energy is called the net primary productivity (NPP). In terrestrial ecosystems, NPP is driven by climate, while light penetration and nutrient availability drive NPP in aquatic ecosystems.

What are Biogeochemical Cycles?

What are Biogeochemical Cycles?

The most common elements in organic molecules, carbon, hydrogen, oxygen, nitrogen, sulfur, and phosphorus, are only available in the ecosystem in limited amounts. Therefore, these nutrients must be recycled through both biotic and abiotic components of the ecosystem, in processes generally called biogeochemical cycles.

Bioremediation

Bioremediation

Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.