沿着河流-河口-海洋连续体的大规模营养和碳动态
Norbert Kamjunke1, Holger Brix2, Götz Flöser2
1Helmholtz Centre for Environmental Research - UFZ, Department of River Ecology, Brückstraße 3a, D-39114 Magdeburg, Germany.
The Science of the total environment
|May 27, 2023
概括
埃尔贝河是埃尔贝河的一条河流.
科学领域:
- 环境科学 环境科学
- 海洋学 海洋学 海洋学
- 生物地质化学生物地质化学
背景情况:
- 河口-河口-沿海系统对于理解陆地到海洋物质流动至关重要.
- 营养和碳动态是这些相互连接的系统中的关键过程.
研究的目的:
- 分析埃尔贝河,河口和德国海湾的营养和碳动态.
- 了解从陆地到海洋的物质流动,使用一种新的采样方法.
主要方法:
- 在埃尔贝河 (580公里在8天). 拉格朗日取样.
- 使用三艘船只对德国海湾进行河口调查和格采样.
- 在潮区域中对营养物质流量的高级计算.
主要成果:
- 河流显示植物浮游生物的生长,高氧和pH值,营养素下降.
- 河口转向异质系统,植物浮游生物死亡,氧气低,高二氧化碳和营养物质释放.
- 沿海水域的植物浮游生物和营养度较低,氧气和接近和,典型的海洋pH值.
结论:
- 这项研究强调了在各种条件下了解陆地-海洋流动的重要性.
- 采用的方法有效地阐明了河流-河口-沿海系统中的营养和碳动态.
关键词:
它是自的,自的.异性otrophic 异性otrophic 异性otrophic 异性otrophic 异性otrophic 异性otrophic 异性otrophic 异性otrophic 异性营养素 营养素 营养素氧气 氧气 是一种植物浮游生物是植物浮游生物.河流-海洋连续体.它们的pH值为pH.更多相关视频
05:04Author Spotlight: Understanding Riverine Nitrogen Impacts and Primary Productivity for Effective Nutrient Management
Published on: July 14, 2023
435
09:38Understanding Dissolved Organic Matter Biogeochemistry Through In Situ Nutrient Manipulations in Stream Ecosystems
Published on: October 29, 2016
10.4K
相关概念视频
01:06Primary Production
23.7K
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.
23.7K
01:17What is an Ecosystem?
39.9K
Overview
39.9K
00:54What are Biogeochemical Cycles?
33.2K
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.
33.2K
01:14The Carbon Cycle
38.7K
Carbon is the basis of all organic matter on Earth, and is recycled through the ecosystem in two primary processes: one in which carbon is exchanged among living organisms, and one in which carbon is cycled over long periods of time through fossilized organic remains, weathering of rocks, and volcanic activity. Human activities, including increased agricultural practices and the burning of fossil fuels, has greatly affected the balance of the natural carbon cycle.
38.7K
00:46Trophic Efficiency
20.8K
Trophic level transfer efficiency (TLTE) is a measure of the total energy transfer from one trophic level to the next. Due to extensive energy loss as metabolic heat, an average of only 10% of the original energy obtained is passed on to the next level. This pattern of energy loss severely limits the possible number of trophic levels in a food chain.
20.8K
01:27Energy Considerations in Open Channel Flow
124
Open channel flow, where a fluid flows with a free surface exposed to the atmosphere, is primarily governed by gravitational and surface effects, distinguishing it from closed conduit or pipe flow. In open channels such as rivers, canals, and artificial channels, energy analysis provides valuable insights into flow behavior and the relationship between depth, velocity, and slope.Specific Energy and Flow DepthIn open channel flow, the specific energy, E, combines the gravitational potential...
124