Biology, Ecology and Management of Harmful Algae

A special issue of Biology (ISSN 2079-7737).

Deadline for manuscript submissions: 31 December 2024 | Viewed by 1772

Special Issue Editors


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Guest Editor
Rice Rivers Center, Virginia Commonwealth University, Richmond, VA 23030, USA
Interests: aquatic ecology; photophysiological ecology; harmful algal blooms; algal toxins; cyanobacteria

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Guest Editor
Department of Earth Sciences, Faculty of Science, Engineering and Agriculture, University of Venda, Private Bag X5050, Thohoyandou 0950, South Africa
Interests: cyanobacteria; water quality; cyanotoxins; algal blooms; harmful algae; water resources

Special Issue Information

Dear Colleagues,

Harmful algae can be found in both saltwater and freshwater environments. Harmful algae outbreaks can form harmful algal blooms (HABs); some types of harmful algae can cause irritation and allergic reactions on direct contact, while others may also produce toxins. These harmful algae outbreaks are a serious threat to aquatic ecosystems, human and animal health, the economy, drinking water supplies, and fisheries.

This Special Issue will provide readers access to state of the art research on the biology and/or ecology of harmful algae and monitoring, as well as on the management and control of harmful algal blooms. Techniques such as chemical control and physical methods such as ultrasound will be presented largely as case studies.

We look forward to receiving your contributions.

Prof. Dr. Paul V. Zimba
Prof. Dr. Jabulani R. Gumbo
Guest Editors

Manuscript Submission Information

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Keywords

  • harmful algae
  • toxic algae
  • harmful algal bloom (HAB)
  • excessive algae growth
  • microalgae and macroalgae
  • cyanobacteria
  • dinoflagellates
  • toxins
  • water quality
  • phytoplankton
  • water resources

Published Papers (1 paper)

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Research

19 pages, 2590 KiB  
Article
Pilot-Scale Fermentation of Pseudoalteromonas sp. Strain FDHY-MZ2: An Effective Strategy for Increasing Algicidal Activity
by Yuying Zhong, Wenhuang Zheng, Xinguo Shi, Yisong Guo, Qianqian Wang, Pin Lv and Jianfeng Chen
Biology 2023, 12(11), 1447; https://doi.org/10.3390/biology12111447 - 17 Nov 2023
Viewed by 1123
Abstract
The role of microorganisms in effectively terminating harmful algal blooms (HABs) is crucial for maintaining environmental stability. Recent studies have placed increased emphasis on bio-agents capable of inhibiting HABs. The bacterium Pseudoalteromonas sp. strain FDHY-MZ2 has exhibited impressive algicidal abilities against Karenia mikimotoi [...] Read more.
The role of microorganisms in effectively terminating harmful algal blooms (HABs) is crucial for maintaining environmental stability. Recent studies have placed increased emphasis on bio-agents capable of inhibiting HABs. The bacterium Pseudoalteromonas sp. strain FDHY-MZ2 has exhibited impressive algicidal abilities against Karenia mikimotoi, a notorious global HAB-forming species. To augment this capability, cultures were progressively scaled from shake flask conditions to small-scale (5 L) and pilot-scale (50 L) fermentation. By employing a specifically tailored culture medium (2216E basal medium with 1.5% soluble starch and 0.5% peptone), under precise conditions (66 h, 20 °C, 450 rpm, 30 L/min ventilation, 3% seeding, and constant starch flow), a notable increase in algicidal bacterial biomass was observed; the bacterial dosage required to entirely wipe out K. mikimotoi within a day decreased from 1% to 0.025%. Compared to an unoptimized shake flask group, the optimized fermentation culture caused significant reductions in algal chlorophyll and protein levels (21.85% and 78.3%, respectively). Co-culturing induced increases in algal malondialdehyde and H2O2 by 5.98 and 5.38 times, respectively, leading to further disruption of algal photosynthesis. This study underscores the unexplored potential of systematically utilized microbial agents in mitigating HABs, providing a pathway for their wider application. Full article
(This article belongs to the Special Issue Biology, Ecology and Management of Harmful Algae)
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