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Microbial Ecology of Lakes, Estuaries and Ocean Coasts
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Microbial Ecology of Lakes, Estuaries and Ocean Coasts

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Biodiversity and Functionality of Aquatic Ecosystems".

Deadline for manuscript submissions: closed (10 December 2024) | Viewed by 2313

Special Issue Editor

Dr. Helena M. Galvão

E-Mail Website
Guest Editor
Centro de Investigacao Marinha e Ambiental, Faro, Portugal
Interests: marine microbial ecology; eutrophication; coastal lagoons; temperate estuaries

Special Issue Information

Dear Colleagues,

This Special Issue entitled Microbial Ecology of Lakes, Estuaries and Ocean Coasts will concern research topics within Aquatic and/or Marine Microbiology and its scope will encompass the structure and function of microbial populations in natural water environments. Such topics will include (1) microbial foodwebs in different ecosystems; (2) recycling of particulate and dissolved organic matter and the importance of maintaining ecological water quality; (3) the role of microbial foodwebs as carbon sinks and/or links; (4) the role of viruses in regulating microorganism biomass diversity, and biogeochemical fluxes; (5) the impact of global change in microbial dynamics, and (6) community genomics in natural environments.

Articles will include research papers, brief notes, and also review papers. Descriptions of environmental conditions and how results can be interpreted in view of environmental variables are encouraged in all studies.

Dr. Helena M. Galvão
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. Water is an international peer-reviewed open access semimonthly 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 2600 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

  • microbial ecology
  • microbial foodwebs
  • trophic dynamics
  • carbon recycling
  • ecological water quality
  • community genomics

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Further information on MDPI's Special Issue policies can be found here.

Published Papers (2 papers)

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Research

13 pages, 1211 KiB  
Article
Growth and Grazing Mortality of Microbial Plankton in a Shallow Temperate Coastal Lagoon (Ria Formosa, SW Iberia)
by Yohann Santos, Benjamin A. Mosley, Patrícia Nogueira, Helena M. Galvão and Rita B. Domingues
Water 2024, 16(23), 3401; https://doi.org/10.3390/w16233401 - 26 Nov 2024
Viewed by 625
Abstract
Microzooplankton grazing is widely recognized as an important process of heterotrophic prokaryote and phytoplankton biomass removal. However, few studies have specifically addressed microbial mortality in the Ria Formosa coastal lagoon. This study aimed to assess the growth and mortality of heterotrophic prokaryotes and [...] Read more.
Microzooplankton grazing is widely recognized as an important process of heterotrophic prokaryote and phytoplankton biomass removal. However, few studies have specifically addressed microbial mortality in the Ria Formosa coastal lagoon. This study aimed to assess the growth and mortality of heterotrophic prokaryotes and phytoplankton in this ecosystem using the dilution technique. The results revealed significant seasonal variations in the growth and grazing rates of both heterotrophic prokaryotes and phytoplankton, with mean grazing rates slightly exceeding the mean potential instantaneous growth rates. This indicates that microzooplankton consume a substantial proportion of both microbial groups in the lagoon. For specific phytoplankton taxa, the wide range of observed grazing rates suggests grazer selectivity, highlighting the need for future research to examine the dynamics of each phytoplankton group more closely. Full article
(This article belongs to the Special Issue Microbial Ecology of Lakes, Estuaries and Ocean Coasts)
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19 pages, 9039 KiB  
Article
Effects of Fresh Groundwater and Seawater Mixing Proportions and Salt-Freshwater Displacement on Coastal Aquifer Microbial Communities
by Lin Chen, Meng Ma, Xiao Li, Kun Yu, Chuanshun Zhi, Long Cheng, Hongwei Ma, Zhuo Wang and Xin Qian
Water 2024, 16(15), 2078; https://doi.org/10.3390/w16152078 - 23 Jul 2024
Viewed by 1235
Abstract
Seawater intrusion significantly affects the microbial communities within coastal aquifers. Investigating the spatial distribution of groundwater microbial communities in coastal regions is crucial for understanding seawater intrusion. The primary objective of this study is to develop a novel microbial index-based method for detecting [...] Read more.
Seawater intrusion significantly affects the microbial communities within coastal aquifers. Investigating the spatial distribution of groundwater microbial communities in coastal regions is crucial for understanding seawater intrusion. The primary objective of this study is to develop a novel microbial index-based method for detecting seawater intrusion. Groundwater microbial samples were collected and sent to the laboratory in the west coastal area of Longkou City, Shandong Province. By characterizing the microbial community within the whole interval of seawater intrusion into fresh groundwater and discussing the effects of salt-freshwater displacement intensities on groundwater microbial communities, including diversity, structure, and function, using indoor domestication experiments, we reveal the response of microorganisms to the seawater intrusion process under in situ environmental conditions. The results show that the microbial community diversity is highest in environments with a seawater mixing proportion (P(sm)) of 2.5% and lowest in those with a P(sm) of 75%. When considering species abundance and evolutionary processes, the microbial community structure is similar at higher P(sm) levels, while it is similar at lower P(sm) levels based on the presence or absence of species. Tenericutes, Flavobacteriia, Rhodobacterales, Flavobacteriales, Rhodobacteraceae, Flavobacteriaceae, Cohaesibacteraceae, and Cohaesibacter are significantly positively correlated with the P(sm). Strong salt-freshwater displacement enhanced the richness and evenness of the microbial community, whereas weak displacement showed the opposite trend. Strong displacement affects the functional profiles of the microbial community. This study effectively addressed the challenge of obtaining samples in coastal areas and also incorporated salt-freshwater displacement intensities, which can more comprehensively describe the microbial community characteristics within the groundwater of coastal aquifers. Full article
(This article belongs to the Special Issue Microbial Ecology of Lakes, Estuaries and Ocean Coasts)
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