识别河口浮游植物时空梯度的生物地球化学标志物

Coasts Pub Date : 2024-07-01 DOI:10.3390/coasts4030024
Anushka Egoda Gamage, Andrew M. Fischer, David S. Nichols, Kim Jye Lee Chang
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摘要

河口浮游植物的时空分布表明了陆地-海洋水生连续体(LOAC)的过程和传输。河口作为生物地球化学和物理上活跃的系统,处理着大量的营养物质和有机物,影响着生态功能的转变。水体的变化推动了浮游植物组成、生物量及其空间分布的变化。了解营养物质和有机物的动态变化具有挑战性,但却能全面了解浮游植物在河口的时空分布。为了解浮游植物的时空分布,已经开展了多项研究。最近,浮游植物光合色素、脂肪酸和稳定同位素被广泛用于识别和量化浮游植物的分布。本综述重点介绍了利用生物地球化学标记来识别浮游植物功能群的情况。它还评估了目前对浮游植物时空分布模式以及物理和环境因素对其在河口和沿岸海域 分布的影响的认识。审查还将收集现场取样研究的信息,以评估目前的知识状况并找出差距。
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Biogeochemical Markers to Identify Spatiotemporal Gradients of Phytoplankton across Estuaries
The spatiotemporal distribution of phytoplankton in estuaries is indicative of processes and transport across the land–ocean aquatic continuum (LOAC). Estuaries, as biogeochemically and physically active systems, process large amounts of nutrients and organic matter influencing the transformation of ecological functions. The transformation of the water column drives variation in phytoplankton composition, biomass, and their spatial distribution. Understanding the dynamics of nutrients and organic matter is challenging, yet it provides a comprehensive insight into phytoplankton spatiotemporal distribution across estuaries. Multiple studies have been conducted to understand the spatiotemporal distribution of phytoplankton. Recently, phytoplankton photosynthetic pigments, fatty acids and stable isotopes have been widely used to identify and quantify phytoplankton distribution. This review highlights the use of biogeochemical markers to identify phytoplankton functional groups. It also assesses the current understanding of patterns in the spatiotemporal distribution of phytoplankton and the impact of physical and environmental factors on their distribution in estuaries and coastal oceans. The review will also gather information from in situ sampling studies to evaluate the current state of knowledge and identify gaps.
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