Microalgal plankton composition in shallow coastal inlets in contrasting trophic and alternative community states

A1 Journal article (refereed)


Internal Authors/Editors


Publication Details

List of Authors: Scheinin M, Sjöqvist C, Mattila J
Publisher: SPRINGER
Publication year: 2013
Journal: Hydrobiologia
Journal acronym: HYDROBIOLOGIA
Volume number: 701
Issue number: 1
Start page: 253
End page: 271
Number of pages: 19
ISSN: 0018-8158
eISSN: 1573-5117


Abstract

As the trophic state of the environment changes, communities develop into divergent states. These community states are conventionally reflected through primary producers, because they are directly affected by nutrient availability. Studies of submerged macrophytes often focus on community composition to decipher the vegetative (community) state of the environment, while planktic microalgae are usually viewed more cursorily. Although microalgal plankton composition has been related to the trophic state of shallow temperate lakes, corresponding qualitative knowledge is lacking for shallow inlets in the sea. We assessed the composition of microalgal plankton in relation to that of submerged macrophytes in shallow inlets in the northern Baltic Sea during one ice-free season. Microalgal plankton composition varied distinctively among inlets in different trophic and vegetative states especially during early and mid-season, before becoming comparably uniform. These patterns were consisted both inside and outside of macrophyte beds and during day and night. Local and diurnal variation was comparably high in eutrophic and charophyte-dominated inlets, but only during early season. Microalgal plankton composition not only reflects the state of littoral communities in varying trophic conditions, but it may also be important for the whole trophic structure of those communities.


Keywords

Alternative state, Baltic sea, Cercozoa, Ciliophora, Cyanophyta, Flad, Lagoon, Mesodinium rubrum, Phytoplankton, Productivity

Last updated on 2020-25-02 at 06:12

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