Calcification Response of Coccolithophores to Eutrophication
发布时间:2025-02-11 20:21
颗石藻细胞是单细胞光合海藻类,珊瑚藻类主要是海洋单细胞浮游植物。颗石藻虫物种海洋球石藻是现代海洋中分布最广泛的物种。因为它们可以通过光合作用消化碳和碳酸钙(球石),所以它们的物种遍布全世界。它们是世界上最大的碳群,也是最大的主要生产者之一。随着人口的增加,人类越来越依赖海洋作为食物来源和生活。因此,我们的文明越来越容易受到海洋系统的负面影响。关于碳和氮在细胞水平上相互作用的信息缺乏与生态相关的浮游植物物种,我们研究了硝酸根的有效性对广泛分布的海洋球石藻有害藻华的碳和氮含量的影响。这些自然现象,对捕鱼生产,公共卫生和现代工业产生了显着的负面影响。细胞在足够的(~280uM)和环境(~10uM)硝酸根离子中培养。后者代表了典型的地表水硝酸盐浓度。在过去的几十年里,硝酸铒的全球频率,规模和地理范围都有所增加。有人提出,全球变化和富营养化是主要趋势。因此,本文的第一部分重点关注海洋球石藻可能形成的环境条件。使用分批培养技术,提高温度和营养素负荷(磷酸盐和硝酸盐)。海洋球石藻(PMLB92/11)也在氮气下分批培养。作为磷钙化石的限制,多元化广泛分布着一批海洋微藻,生物生产。由球孢霉产生植物海洋球...
【文章页数】:69 页
【学位级别】:硕士
【文章目录】:
ABSTRACT
摘要
1 Introduction
1.1 The Coccoliths
1.1.1 Coccolith composition and structure
1.1.1.2 Coccolith formation crystal growth
1.1.1.3 Number of coccoliths produced by and lost from the cell
2 Importance of topic
3 Literature Review
3.1 Harmful Algal Blooms
3.2 The main biological groups that produce algal blooms
3.2.1 Diatoms
3.2.2 Dinoflagellates
3.2.3 Cyanobacteria
4 Eutrophication and coccolith growth
5 Calcification and photosynthesis
5.1 Irradiance effects on calcification
5.2 The calcification photosynthesis (CIP) ratio
5.3 Carbon sources in photosynthesis
6 Research background
7 Thesis aims and objectives
8 Materials and methods
8.1 Batch culturing and sample collection
8.2 Quantifying physiological factors
8.3 Sample dilution process for Poc/Pic
8.4 Spectroscopy(FT-IR) and Ultraviolet-visible spectroscopy(UV-Vis)
8.5 Sample collection for (FT-IR and UV-VIS)
9 Technical Rout
10 Results & Discussion
10.1 Results
11 Discussion
Conclusion
Acknowledgement
References
本文编号:4033800
【文章页数】:69 页
【学位级别】:硕士
【文章目录】:
ABSTRACT
摘要
1 Introduction
1.1 The Coccoliths
1.1.1 Coccolith composition and structure
1.1.1.2 Coccolith formation crystal growth
1.1.1.3 Number of coccoliths produced by and lost from the cell
2 Importance of topic
3 Literature Review
3.1 Harmful Algal Blooms
3.2 The main biological groups that produce algal blooms
3.2.1 Diatoms
3.2.2 Dinoflagellates
3.2.3 Cyanobacteria
4 Eutrophication and coccolith growth
5 Calcification and photosynthesis
5.1 Irradiance effects on calcification
5.2 The calcification photosynthesis (CIP) ratio
5.3 Carbon sources in photosynthesis
6 Research background
7 Thesis aims and objectives
8 Materials and methods
8.1 Batch culturing and sample collection
8.2 Quantifying physiological factors
8.3 Sample dilution process for Poc/Pic
8.4 Spectroscopy(FT-IR) and Ultraviolet-visible spectroscopy(UV-Vis)
8.5 Sample collection for (FT-IR and UV-VIS)
9 Technical Rout
10 Results & Discussion
10.1 Results
11 Discussion
Conclusion
Acknowledgement
References
本文编号:4033800
本文链接:https://www.wllwen.com/kejilunwen/huanjinggongchenglunwen/4033800.html
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