Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.1007/s10750-024-05520-7
Lizenz creative commons licence
Titel (primär) Lagrangian dynamics of the spring zooplankton community in a large river
Autor Hromova, Y.; Brauns, M.; Kamjunke, N.
Quelle Hydrobiologia
Erscheinungsjahr 2024
Department SEEFO; FLOEK
Sprache englisch
Topic T5 Future Landscapes
T4 Coastal System
Keywords River Elbe; Lagrangian sampling; Rotifera; Cladocera; Copepoda; Residence time
Abstract Zooplankton may represent a considerable part of plankton in large rivers, but little is known about the factors that control it. We hypothesized that (1) significant longitudinal increase of zooplankton abundance, biomass, taxonomic richness, and diversity will occur along a free-flowing river section; (2) the residence time of water is more important for zooplankton population growth than environmental variables such as water temperature, oxygen saturation, and food concentration; and (3) the influence of tributaries on the longitudinal dynamics of zooplankton is insignificant or only has a local effect. A Lagrangian survey was applied in the free-flowing section of the River Elbe (Germany) in spring 2022. The abundances and biomass of the dominant rotifers as well as of cladocerans and copepods increased significantly downstream due to the population growth of zooplankton. The water residence time was the most important factor for zooplankton increment. One of the tributaries increased zooplankton abundance and biomass in the River Elbe, while other tributaries did not but the introduction of new species increased taxonomic richness and decreased the evenness of zooplankton in the main river so that diversity remained nearly constant.
dauerhafte UFZ-Verlinkung
Hromova, Y., Brauns, M., Kamjunke, N. (2024):
Lagrangian dynamics of the spring zooplankton community in a large river
Hydrobiologia 10.1007/s10750-024-05520-7