Anthropogenic Inputs Affect Phytoplankton Communities in a Subtropical Estuary

In the past few decades, with the rapid economic development of China and Vietnam, the marine ecological environment of Beibu Gulf is facing increasing pressure. To understand the impact of anthropogenic inputs on marine ecology, high-performance liquid chromatography (HPLC) was used to study phytop...

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Main Authors: Xin Luo, Ke Pan, Lei Wang, Mingmin Li, Tianshen Li, Bijian Pang, Jianhua Kang, Jiaxiang Fu, Wenlu Lan
Format: Article
Language:English
Published: MDPI AG 2022-02-01
Series:Water
Subjects:
Online Access:https://www.mdpi.com/2073-4441/14/4/636
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author Xin Luo
Ke Pan
Lei Wang
Mingmin Li
Tianshen Li
Bijian Pang
Jianhua Kang
Jiaxiang Fu
Wenlu Lan
author_facet Xin Luo
Ke Pan
Lei Wang
Mingmin Li
Tianshen Li
Bijian Pang
Jianhua Kang
Jiaxiang Fu
Wenlu Lan
author_sort Xin Luo
collection DOAJ
description In the past few decades, with the rapid economic development of China and Vietnam, the marine ecological environment of Beibu Gulf is facing increasing pressure. To understand the impact of anthropogenic inputs on marine ecology, high-performance liquid chromatography (HPLC) was used to study phytoplankton in this paper. We examined the influence of anthropogenic inputs on phytoplankton biomass and community structure in a subtropical estuary. Anthropogenic inputs had significantly increased the nutrient concentration in the estuary between 2010 and 2015. We observed that phosphorus limitation has been greatly relieved in 2015. However, the biomass of dominant phytoplankton was lower in 2015 than in 2010, possibly due to the expansion of oyster farming in the estuary. The coverage of oyster rafts was estimated to be 26.3 km<sup>2</sup>. The presence of dense oysters may significantly reduce the phytoplankton biomass. The proportion of Diatoms decreased while some nano- and pico-phytoplankton (like Cryptophytes and Prasinophytes) increased, which indicated that oysters changed not only the biomass but also the size of phytoplankton communities. This study improved our understanding of anthropogenic inputs on phytoplankton communities in subtropical estuary.
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spelling doaj.art-a6082b724eac429a9b36044f53d3f6b82023-11-23T22:35:01ZengMDPI AGWater2073-44412022-02-0114463610.3390/w14040636Anthropogenic Inputs Affect Phytoplankton Communities in a Subtropical EstuaryXin Luo0Ke Pan1Lei Wang2Mingmin Li3Tianshen Li4Bijian Pang5Jianhua Kang6Jiaxiang Fu7Wenlu Lan8Marine Environmental Monitoring Center of Guangxi, Beihai 536000, ChinaShenzhen Key Laboratory of Marine Microbiome Engineering, Institute for Advanced Study, Shenzhen University, Shenzhen 518060, ChinaThird Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, ChinaGuangxi Key Lab of Mangrove Conservation and Utilization, Guangxi Mangrove Research Center, Guangxi Academy of Sciences, Beihai 536000, ChinaGuangxi Key Lab of Mangrove Conservation and Utilization, Guangxi Mangrove Research Center, Guangxi Academy of Sciences, Beihai 536000, ChinaGuangxi Key Lab of Mangrove Conservation and Utilization, Guangxi Mangrove Research Center, Guangxi Academy of Sciences, Beihai 536000, ChinaThird Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, ChinaGuangxi Key Lab of Mangrove Conservation and Utilization, Guangxi Mangrove Research Center, Guangxi Academy of Sciences, Beihai 536000, ChinaMarine Environmental Monitoring Center of Guangxi, Beihai 536000, ChinaIn the past few decades, with the rapid economic development of China and Vietnam, the marine ecological environment of Beibu Gulf is facing increasing pressure. To understand the impact of anthropogenic inputs on marine ecology, high-performance liquid chromatography (HPLC) was used to study phytoplankton in this paper. We examined the influence of anthropogenic inputs on phytoplankton biomass and community structure in a subtropical estuary. Anthropogenic inputs had significantly increased the nutrient concentration in the estuary between 2010 and 2015. We observed that phosphorus limitation has been greatly relieved in 2015. However, the biomass of dominant phytoplankton was lower in 2015 than in 2010, possibly due to the expansion of oyster farming in the estuary. The coverage of oyster rafts was estimated to be 26.3 km<sup>2</sup>. The presence of dense oysters may significantly reduce the phytoplankton biomass. The proportion of Diatoms decreased while some nano- and pico-phytoplankton (like Cryptophytes and Prasinophytes) increased, which indicated that oysters changed not only the biomass but also the size of phytoplankton communities. This study improved our understanding of anthropogenic inputs on phytoplankton communities in subtropical estuary.https://www.mdpi.com/2073-4441/14/4/636phytoplanktonQinzhou Bayoyster farmingspatial heterogeneity
spellingShingle Xin Luo
Ke Pan
Lei Wang
Mingmin Li
Tianshen Li
Bijian Pang
Jianhua Kang
Jiaxiang Fu
Wenlu Lan
Anthropogenic Inputs Affect Phytoplankton Communities in a Subtropical Estuary
Water
phytoplankton
Qinzhou Bay
oyster farming
spatial heterogeneity
title Anthropogenic Inputs Affect Phytoplankton Communities in a Subtropical Estuary
title_full Anthropogenic Inputs Affect Phytoplankton Communities in a Subtropical Estuary
title_fullStr Anthropogenic Inputs Affect Phytoplankton Communities in a Subtropical Estuary
title_full_unstemmed Anthropogenic Inputs Affect Phytoplankton Communities in a Subtropical Estuary
title_short Anthropogenic Inputs Affect Phytoplankton Communities in a Subtropical Estuary
title_sort anthropogenic inputs affect phytoplankton communities in a subtropical estuary
topic phytoplankton
Qinzhou Bay
oyster farming
spatial heterogeneity
url https://www.mdpi.com/2073-4441/14/4/636
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