北方湖泊中的浮游生物质揭示了对全球变化的复杂反应
Aleksey Paltsev1, Ann-Kristin Bergström1, Kristiina Vuorio2
1Department of Ecology and Environmental Science, Umeå University, Umeå, Sweden.
The Science of the total environment
|June 2, 2024
概括
全球变化改变了北湖的植物浮游生物. 总 (TP) 在空间上驱动生物质,但铁 (Fe),pH和总有机碳 (TOC) 的时间变化会导致变化,棕色会影响生产力.
科学领域:
- 环境科学环境科学
- 临界技术 临界技术
- 全球变革研究研究.
背景情况:
- 全球变化影响湖泊生态系统,改变植物浮游生物质和社区结构.
- 植物浮游生物是湖泊健康和生产力的关键指标.
- 了解这些变化对于管理淡水资源至关重要.
研究的目的:
- 评估植物浮游生物质如何与Fennoscandian湖泊的空间和时间梯度之间的环境因素相关.
- 研究水温,pH和营养素 (TP,TN,TOC,Fe) 对浮游植物群体的影响.
- 评估空间替代时间的充分性,以进行长期全球变化影响评估.
主要方法:
- 利用来自瑞典和芬兰湖泊的广泛的空间 (135个湖泊) 和时间 (1995-2019,110个湖泊) 监测数据.
- 采用机器学习方法来分析植物浮游生物质和环境变量之间的关系.
- 比较空间和时间分析以确定差异和长期趋势.
主要成果:
- 在空间分析中,总 (TP) 是植物浮游生物总量 (PB) 和特定群体 (如Gonyostomum精液和菌) 的主要驱动因素.
- 时间分析显示,降低Fe,增加pH和增加TOC与降低G.精液和增加菌有关.
- 增加TOC导致湖泊色,在许多湖泊显著减少PB,而总PB在Fennoscandia显示了截然不同的趋势.
结论:
- 空间与时间的数据替代可能不足以表征长期全球变化对植物浮游生物的影响.
- 渐进的棕色化和Fe和pH的变化显著改变了北方湖泊中的浮游植物生物质和社区结构.
- 观察到的转变包括G.精液的下降和超过25年的蓝藻细菌的增加,整体PB下降而不是增加.
更多相关视频
07:03Measuring Photophysiology of Attached Stage of Colacium sp. by a Cuvette-Type Fast Repetition Rate Fluorometer
Published on: November 12, 2021
2.3K
12:24Laboratory Estimation of Net Trophic Transfer Efficiencies of PCB Congeners to Lake Trout Salvelinus namaycush from Its Prey
Published on: August 29, 2014
11.0K
相关概念视频
Primary Production
23.6K
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.
23.6K
Responses to Drought and Flooding
10.7K
Water plays a significant role in the life cycle of plants. However, insufficient or excess of water can be detrimental and pose a serious threat to plants.
10.7K
Biological Clocks and Seasonal Responses
34.6K
The circadian—or biological—clock is an intrinsic, timekeeping, molecular mechanism that allows plants to coordinate physiological activities over 24-hour cycles called circadian rhythms. Photoperiodism is a collective term for the biological responses of plants to variations in the relative lengths of dark and light periods. The period of light-exposure is called the photoperiod.
34.6K
Bioremediation
18.2K
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.
18.2K
Diversity in Cell Signaling Responses
6.4K
The physiological function of a cell and cellular communication are outcomes of a range of extrinsic signals, intracellular signaling pathways, and cellular responses. No two cell types express the same repertoire of signaling components. Receptors are highly selective for their cognate ligands, but once activated, they can alter multiple cellular processes such as DNA transcription, protein synthesis, and metabolic activity.
Graded and Abrupt Responses
Some signaling systems generate...
Graded and Abrupt Responses
Some signaling systems generate...
6.4K
