MYCOPLANKTON BIOME STRUCTURE AND ASSEMBLAGE PROCESSES ALONG A TRANSECT FROM THE SHALLOW FRESHWATER AREA OF THE ELBE RIVER DOWN TO THE ADJACENT MARINE WATERS


Contact
Antje.Wichels [ at ] awi.de

Abstract

Understanding the relative importance of dispersal and environmental selection in shaping aquatic mycoplankton communities can help to predict fungus-driven ecological processes such as mycoflux or mycoloop and to maintain biodiversity in river ecosystems. In the presented study, a transect of the Elbe River (7th stream order number) that extended from the shallow freshwater zone through the estuary up to the river plume, and to the adjacent ocean waters, was sampled. Mycoplankton community structure and underlying assemblage processes were investigated using tag sequencing and Quantitative Process Estimates (QPE) analysis. Mycoplankton communities formed three significantly different biomes, by which the most structuring factor of salinity was superimposed by secondary effects of the Elbe deepening works. The underlying processes differed drastically: migrations of taxa played only a minor role. Instead, the species present in upstream sections responded to the strong physico-chemical environmental changes and a change from an autotrophic to a heterotrophic system was observed. Downstream, neither selection nor dispersal dominated but microbial features such as the cell tolerance to salinity variability, host dependency, and life strategy could help to explain the observed patterns. The results showed that the assemblage processes can change over relatively short distances. It indicates that the processes are not static and that the relative importance of a process can vary under different conditions and between members of a community.++



Item Type
Conference (Talk)
Authors
Divisions
Primary Division
Programs
Primary Topic
Peer revision
Not peer-reviewed
Publication Status
Published
Event Details
ASLO, 01 Jun 2021 - 01 Jan 1970.
Eprint ID
53883
Cite as
Yang, Y. , Banos, S. , Gerdts, G. , Wichels, A. and Reich, M. (2021): MYCOPLANKTON BIOME STRUCTURE AND ASSEMBLAGE PROCESSES ALONG A TRANSECT FROM THE SHALLOW FRESHWATER AREA OF THE ELBE RIVER DOWN TO THE ADJACENT MARINE WATERS , ASLO, June 2021 - unspecified .


Share

Research Platforms

Campaigns


Actions
Edit Item Edit Item