Biogeochemical Processes in the Aquatic Environment

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 (25 April 2024) | Viewed by 1141

Special Issue Editor


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Guest Editor
Institute of Marine Environment and Ecology, National Taiwan Ocean University, Keelung, Taiwan
Interests: aquatic microbial ecology; trophic interactions between picoplankton and nanoplankton; mixotrophic nanoflagellates; viral ecology; response of microbes to environmental changes
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Biogeochemical cycling not only involves the reservoirs that store elements, but also the fluxes between them and the physical, chemical, and biological factors that govern them. This has important implications for research in this field. Furthermore, numerous feedback mechanisms connect the cycles of several elements, including carbon, nitrogen, phosphorus, and sulfur. In the biosphere, environmental forces are responsible for various changes in the composition of the biosphere and in the elemental fluxes on all timescales.

An improved understanding of the underlying processes is essential to understanding how carbon and nutrients move through the atmosphere, land, and oceans. Climate change and the increasing anthropogenic nutrient release further increase the importance of this. Microbes in the oceans contribute significantly to the global nutrient cycle, making up approximately half of the world's primary production. There are a number of microbes that are uniquely important to life and form the foundation of our biosphere. By utilizing their unique metabolisms, marine microbes can complete several biogeochemical cycles that cannot be completed by other organisms.

This Special Issue investigates the biogeochemical interactions between aquatic microbes (viruses, bacteria, algae, and zooplankton) and their environments. We invite relevant research papers that present experimental findings, field studies, new methods, theoretical approaches, and mathematical modeling. Multidisciplinary papers on biogeochemical processes in the environment and applications in biotechnology are especially encouraged.

Prof. Dr. An Yi Tsai
Guest Editor

Manuscript Submission Information

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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

  • biogeochemical cycling
  • aquatic microbes
  • viruses
  • bacteria
  • algae
  • zooplankton
  • carbon
  • nitrogen

Published Papers (1 paper)

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Research

12 pages, 2908 KiB  
Article
Investigation of the Growth and Mortality of Bacteria and Synechococcus spp. in Unvegetated and Seagrass Habitats
by Patrichka Wei-Yi Chen, Clara Natalie Annabel, Madeline Olivia, Wen-Chen Chou, Jian-Jhih Chen, Ruei-Feng Shiu, Vladimir Mukhanov, Mariche Natividad, Yi-Le Shen and An-Yi Tsai
Water 2024, 16(7), 939; https://doi.org/10.3390/w16070939 - 25 Mar 2024
Viewed by 846
Abstract
There is no doubt that seagrass beds constitute one of the most productive ecosystems in shallow coastal waters. Despite this, picoplankton in seagrass ecosystems has received relatively little attention. The purpose of this study was to compare picoplankton growth and mortality rates between [...] Read more.
There is no doubt that seagrass beds constitute one of the most productive ecosystems in shallow coastal waters. Despite this, picoplankton in seagrass ecosystems has received relatively little attention. The purpose of this study was to compare picoplankton growth and mortality rates between seagrass and unvegetated habitats using chamber incubations. We tested two main hypotheses: (i) incubation with seagrass would result in higher bacterial growth rates due to increased DOM release from seagrass photosynthesis, and (ii) Synechococcus spp. would be lower in the presence of seagrass due to competition for inorganic nutrients. Bacterial growth rates were higher in seagrass chambers (2.44 d–1) than in non-seagrass chambers (2.31 d−1), respectively, suggesting that organic carbon coming from the seagrass community may support bacterial production. Furthermore, the growth rate of Synechococcus spp. was significantly lower in the seagrass treatment than in the non-seagrass treatment, likely reflecting nutrient competition with the seagrass. Small-scale chambers proved to be a useful tool for studying the factors controlling spatial and temporal patterns of picoplankton across different habitats. Furthermore, future studies should examine picoplankton growth over a wider range of spatial scales in seagrass beds and adjacent unvegetated sediment. Full article
(This article belongs to the Special Issue Biogeochemical Processes in the Aquatic Environment)
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