Virioplankton dynamics are related to eutrophication levels in a tropical urbanized bay

Autor: Fabiano L. Thompson, Pedro C. Junger, Rodolfo Paranhos, Mariana M. Lessa, Anderson S. Cabral
Rok vydání: 2017
Předmět:
Chlorophyll
Pigments
0106 biological sciences
0301 basic medicine
Salinity
Chloroplasts
viruses
Marine and Aquatic Sciences
lcsh:Medicine
Plant Science
Physical Chemistry
01 natural sciences
Freshwater ecosystem
Abundance (ecology)
Water Quality
lcsh:Science
Trophic level
Principal Component Analysis
Multidisciplinary
geography.geographical_feature_category
Ecology
Eutrophication
Flow Cytometry
Plankton
Pollution
Chemistry
Viruses
Physical Sciences
Engineering and Technology
Cellular Structures and Organelles
Cellular Types
Estuaries
Environmental Monitoring
Research Article
Environmental Engineering
Plant Cell Biology
Materials Science
030106 microbiology
Biology
Ecosystems
03 medical and health sciences
Surface Water
Plant Cells
Ecosystem
Materials by Attribute
geography
Organic Pigments
Bacteria
010604 marine biology & hydrobiology
Water Pollution
Ecology and Environmental Sciences
lcsh:R
Organisms
Biology and Life Sciences
Estuary
Cell Biology
Bacterioplankton
Bodies of Water
Chemical Properties
Linear Models
Earth Sciences
lcsh:Q
Hydrology
Bay
Zdroj: PLoS ONE, Vol 12, Iss 3, p e0174653 (2017)
PLoS ONE
ISSN: 1932-6203
Popis: Virioplankton are an important and abundant biological component of marine and freshwater ecosystems. Often overlooked, aquatic viruses play an important role in biogeochemical cycles on a global scale, infecting both autotrophic and heterotrophic microbes. Viral diversity, abundance, and viral interactions at different trophic levels in aqueous environments are not well understood. Tropical ecosystems are less frequently studied than temperate ecosystems, but could provide new insights into how physical and chemical variability can shape or force microbial community changes. In this study, we found high viral abundance values in Guanabara Bay relative to other estuaries around the world. Viral abundance was positively correlated with bacterioplankton abundance and chlorophyll a concentrations. Moreover, prokaryotic and viral abundance were positively correlated with eutrophication, especially in surface waters. These results provide novel baseline data on the quantitative distribution of aquatic viruses in tropical estuaries. They also provide new information on a complex and dynamic relationship in which environmental factors influence the abundance of bacterial hosts and consequently their viruses. Guanabara Bay is characterized by spatial and seasonal variations, and the eutrophication process is the most important factor explaining the structuring of virioplankton abundance and distribution in this tropical urbanized bay.
Databáze: OpenAIRE
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