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Community, Disturbance and Succession: Lake, Stream, Wetland and Estuary

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Environmental Sciences".

Deadline for manuscript submissions: closed (31 August 2022) | Viewed by 1700

Special Issue Editors


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Guest Editor
Environmental Biology and Ecology, Department of Life Science, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea
Interests: plankton ecology; freshwater algal taxonomy; harmful algal bloom (HAB) biological control; cyanobacteria; biomanipulation; fish; mussels; bacteria; stream ecosystem health; diatom index; community dynamic index
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
The Research Institute for Naturial Sciences, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea
Interests: allelopathic effects on microalgae; ecology of harmful algae; harmful algal bloom control; microalgal culture; toxic cyanobacteria
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Global warming and abnormal climate caused by the emission of many greenhouse gases are the most serious environmental problems facing the earth today. This phenomenon is occurring in various natural ecosystems, including lakes, rivers, and estuaries, as well as human activity spaces. In particular, it is more evident in the species abundance and diversity of aquatic communities, such as bacteria, aquatic insects, diatoms, aquatic plants, and fish that inhabit river ecosystems. This Special Issue covers the accumulation of long-term and short-term aquatic environment and biomonitoring data on changes in aquatic ecosystems caused by climate change, as well as advanced statistical analysis and future predictions based on them. In particular, this Special Issue is open to taxonomy, embryology, molecular biology, and hydraulic-model ecologists on aquatic environments and aquatic organisms, such as rivers, lakes and estuaries.

Prof. Dr. Baik-Ho Kim
Dr. Myung-Hwan Park
Dr. Zhun Li
Guest Editors

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Keywords

  • river
  • bacteria
  • benthic diatom
  • aquatic insect
  • fish
  • hydrophyte
  • water quality
  • lake
  • stream
  • estuary
  • tidal zone

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Published Papers (1 paper)

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Research

14 pages, 2053 KiB  
Article
Effects of Humic Acids on Size and Species Composition of Phytoplankton in a Eutrophic Temperate Estuary
by Yongsik Sin and Sunghwan Kim
Appl. Sci. 2022, 12(20), 10223; https://doi.org/10.3390/app122010223 - 11 Oct 2022
Cited by 1 | Viewed by 1291
Abstract
The Yeongsan River estuary was divided into freshwater and seawater zones by a sea dike constructed at its mouth in 1981. The freshwater zone, which flows through a metropolitan area, is eutrophic, causing frequent algal blooms with an expected increase in the concentration [...] Read more.
The Yeongsan River estuary was divided into freshwater and seawater zones by a sea dike constructed at its mouth in 1981. The freshwater zone, which flows through a metropolitan area, is eutrophic, causing frequent algal blooms with an expected increase in the concentration of refractory organic compounds such as humic substances (HS). Herein, the in situ freshwater zone phytoplankton community size and taxonomic composition were investigated in response to the addition of humic acids (HA) using seasonal mesocosm experiments. Phytoplankton (chlorophyll a) were fractionated into nano-(<20 µm) and net-size (>20 µm) classes and identified by species or genus. Their response to HA treatment was examined by repeated measures analysis of variance (RM-ANOVA). With the addition of HA, the concentrations of total and nanosized chlorophyll a increased significantly (p < 0.05), whereas that of net-sized chlorophyll a did not change significantly through the seasons. The abundance of Stephanodiscus sp. (diatoms) also increased significantly when this genus dominated the phytoplankton community. This suggests that the management of HS may be crucial in mitigating algal blooms in estuaries, such as in the Yeongsan River estuary, that are subjected to anthropogenic disturbances by engineered structures. Full article
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