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          Institute: MPI für Evolutionsbiologie     Collection: Ecophysiology     Display Documents

ID: 291527.0, MPI für Evolutionsbiologie / Ecophysiology
Seasonality and diversity patterns of microphytobenthos in a mesotrophic lake
Authors:Aberle, N.; Wiltshire, K. H.
Date of Publication (YYYY-MM-DD):2006-09
Title of Journal:Archiv für Hydrobiologie
Journal Abbrev.:Arch. Hydrobiol.
Issue / Number:1-4
Start Page:447
End Page:465
Title of Issue:"Natural selection is ecology in action". Dedicated to Professor Dr. Winfried Lampert on the occasion of his 65th birthday
Full name of Issue-Editor(s):Boersma, Maarten; Santer, Barbara
Review Status:not specified
Audience:Not Specified
Abstract / Description:Investigations on the littoral microphytobenthos populations of lakes are very rare. Based on new sampling techniques, allowing the undisturbed sampling of sublittoral sediments, we present information on limnic microphytobenthos populations of the Schöhsee in Northern Germany (10 degrees 26'E, 54 degrees 13'N). Investigations on microphytobenthic communities at a. sandy and a muddy site provided new insights into the community structure and seasonal variations of limnic benthic microalgae. The microphytobenthos was characterised by low chlorophyll-a contents (0.16 μg cm⁻²) to 0.74 μg cm⁻²) and low cell numbers (25 cells cm⁻²) to 266 cells cm⁻²). Both sites showed similar patterns in terms of algal biomass and seasonality; no site-specific characteristics were observed. The productivity of the sediment microflora in the Schöhsee was low and most likely related to the mesotrophic lake character and to reduced light conditions in the near-shore sublittoral. The algal communities at both sites showed high diversity, distinct seasonality and succession patterns with shifts in community composition in spring, summer and autumn. The community was dominated by Fragilaria spp., Navicula spp., Nitzschia spp., and Stauroneis spp. in spring shifting to a Stauroneis spp.-dominated community in summer. In autumn the populations were dominated by Navicula spp., Nitzschia spp., and Stauroneis spp. Overall, the taxonomic composition showed a dominance of prostrate diatoms, whereas cyanobacteria, green algae and erect diatoms occurred rarely and with low abundance. Thus, the sediment microflora of the Schohsee can be characterized as a flat, two-dimensional community.
Free Keywords:low productivity; algal biomass; edaphic algae; epipsammon; sediments
External Publication Status:published
Document Type:Article
Affiliations:MPI für Limnologie/Abt. Ökophysiologie
External Affiliations:Leibniz Inst Marine Sci, IFM, GEOMAR, Düsternbrooker Weg 20, D-24105 Kiel, Germany
Relations:Is Version Of-EDOCID:298559
Identifiers:ISSN:0003-9136 [ID-No:1]
DOI:10.1127/0003-9136/2006/0167-0447 [ID-No:2]
LOCALID:2496/S 38573 [Listen-Nummer/S-Nummer]
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