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Environments
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Impact of Physical and Biological Structuring of Freshwaters on Development...
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Impact of Physical and Biological Structuring of Freshwaters on Development of Cyanobacterial Blooms

A special issue of Environments (ISSN 2076-3298).

Deadline for manuscript submissions: closed (28 February 2021) | Viewed by 6575

Special Issue Editor

Dr. Maciej Bartosiewicz

E-Mail Website
Guest Editor
Department of Environmental Sciences, University of Basel, Basel, Switzerland
Interests: physical, chemical, and biological structuring of lakes, rivers, and reservoirs with implications for the development of cyanobacterial blooms, microbial carbon processing, and exchange of greenhouse gases (CO2, CH4 and N2O); new processes involved in methane production in well-oxygenated waters; change in carbon processing and storage as a consequence of diverse influences from plankton activities; effects of warming and eutrophication
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

As a Guest Editor, I would like to kindly invite you to contribute a research article or a review to be published in a Special Issue of Environments (ISSN 2076-3298): Impact of Physical and Biological Structuring of Freshwaters on Development of Cyanobacterial Blooms.

Proliferation of noxious phytoplankton blooms in warmer, more stratified and eutrophic conditions is of concern in warm and cold climates, as well as in shallow and deep freshwaters globally. The bottom–up effects of temperature, stratification regime, light conditions, nutrient availability, and ratios control the phytoplanton community structure and often moderate phenology and severity of blooms. On the other hand, top–down effects through grazing or infections as well as competition can limit blooms. The interaction between bottom–up and top–down controls on the formation and evolution of phytoplankton blooms is particularly interesting in waters that are globally becoming warmer and less transparent to consequently stratify more strongly and develop more extensive bottom water anoxia. The general purpose of this Special Issue is to provide a venue for discussion on the importance of physical and biological interactions on performance of cyanobacteria that have the capacity to form noxious blooms. The scope is broad, and I invite submissions based on detailed experimental investigation of selected traits in a single cyanobacterial strain or species up to meta-analyses using datasets from monitoring campaings and nation-wide surveys. Anything in between is also most welcome. The focus should be, however, on detemining interactive mechanisms triggering/stimulating cyanobacterial blooms or catalyzing changes in their phenology rather than on single factor effects. Research aiming to reveal the stimulants and to account for consequences of surface cyanobacterial blooms on plankton communities in relation to carbon concentration and oxygen stratification will also be given full consideration.

Dr. Maciej Bartosiewicz
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Environments is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1800 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • eutrophication
  • global warming
  • stratification
  • noxion blooms
  • toxic cyanobacteria
  • biotic interactions

Published Papers (2 papers)

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Research

18 pages, 4404 KiB  
Article
Long-Term Eutrophication and Dynamics of Bloom-Forming Microbial Communities during Summer HAB in Large Arctic Lake
by Nikolay Kashulin, Tatiana Kashulina and Alexander Bekkelund
Environments 2021, 8(8), 82; https://0-doi-org.brum.beds.ac.uk/10.3390/environments8080082 - 17 Aug 2021
Cited by 3 | Viewed by 2774
Abstract
Harmful algal blooms (HABs) in arctic lakes are recent phenomena. In our study, we performed a long-term analysis (1990–2017) of the eutrophication of Lake Imandra, a large subarctic lake, and explored the biodiversity of bloom-forming microorganisms of a 2017 summer HAB. We performed [...] Read more.
Harmful algal blooms (HABs) in arctic lakes are recent phenomena. In our study, we performed a long-term analysis (1990–2017) of the eutrophication of Lake Imandra, a large subarctic lake, and explored the biodiversity of bloom-forming microorganisms of a 2017 summer HAB. We performed a 16Sr rRNA metabarcoding study of microbial communities, analysed the associations between N, P, C, and chlorophyll concentrations in the lake water, and developed models for the prediction of HABs based on total P concentration. We have demonstrated that blooms in Lake Imandra occur outside of optimal Redfield ratios and have a nonlinear association with P concentrations. We found that recent summer HABs in a lake occur as simultaneous blooms of a diatom Aulacoseira sp. and cyanobacteria Dolichospermum sp. We have studied the temporal dynamics of microbial communities during the bloom and performed an analysis of the publicly available Dolichospermum genomes to outline potential genetic mechanisms beneath simultaneous blooming. We found genetic traits requisite for diatom-diazotroph associations, which may lay beneath the simultaneous blooming of Aulacoseira sp. and Dolichospermum sp. in Lake Imandra. Both groups of organisms have the ability to store nutrients and form a dormant stage. All of these factors will ensure the further development of the HABs in Lake Imandra and the dispersal of these bloom-forming species to neighboring lakes. Full article
(This article belongs to the Special Issue Impact of Physical and Biological Structuring of Freshwaters on Development of Cyanobacterial Blooms)
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25 pages, 7398 KiB  
Article
Spatiotemporal Variability in Phytoplankton Bloom Phenology in Eastern Canadian Lakes Related to Physiographic, Morphologic, and Climatic Drivers
by Claudie Ratté-Fortin, Karem Chokmani and Isabelle Laurion
Environments 2020, 7(10), 77; https://0-doi-org.brum.beds.ac.uk/10.3390/environments7100077 - 27 Sep 2020
Cited by 5 | Viewed by 3227
Abstract
Phytoplankton bloom monitoring in freshwaters is a challenging task, particularly when biomass is dominated by buoyant cyanobacterial communities that present complex spatiotemporal patterns. Increases in bloom frequency or intensity and their earlier onset in spring were shown to be linked to multiple anthropogenic [...] Read more.
Phytoplankton bloom monitoring in freshwaters is a challenging task, particularly when biomass is dominated by buoyant cyanobacterial communities that present complex spatiotemporal patterns. Increases in bloom frequency or intensity and their earlier onset in spring were shown to be linked to multiple anthropogenic disturbances, including climate change. The aim of the present study was to describe the phenology of phytoplankton blooms and its potential link with morphological, physiographic, anthropogenic, and climatic characteristics of the lakes and their watershed. The spatiotemporal dynamics of near-surface blooms were studied on 580 lakes in southern Quebec (Eastern Canada) over a 17-year period by analyzing chlorophyll-a concentrations gathered from MODIS (Moderate Resolution Imaging Spectroradiometer) satellite images. Results show a significant increase by 23% in bloom frequency across all studied lakes between 2000 and 2016. The first blooms of the year appeared increasingly early over this period but only by 3 days (median date changing from 6 June to 3 June). Results also indicate that high biomass values are often reached, but the problem is seldom extended to the entire lake surface. The canonical correlation analysis between phenological variables and environmental variables shows that higher frequency and intensity of phytoplankton blooms and earlier onset date occurred for smaller watersheds and higher degree-days, lake surface area, and proportion of urban zones. This study provides a regional picture of lake trophic state over a wide variety of lacustrine environments in Quebec, a detailed phenology allowing to go beyond local biomass assessments, and the first steps on the development of an approach exploiting regional trends for local pattern assessments. Full article
(This article belongs to the Special Issue Impact of Physical and Biological Structuring of Freshwaters on Development of Cyanobacterial Blooms)
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