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The database is hosted by Kiel University
and is established by Magda Wieckowska-
Lüth, Wiebke Kirleis and Kay Schmütz,
Institute for Prehistoric and Protohistoric Archaeology.

© Wieckowska-Lüth/Kirleis/Schmütz 2020

HdV-600Type: HdV-600

Category: Cyanobacteria

Taxonomical identification: Aphanizomenon cf. gracile

First publication: Ralska-Jasiewiczowa, M. and van Geel, B. (1992) Early human disturbance of the natural environment recorded in annually laminated sediments of Lake Gosciaz, Central Poland. Vegetation History and Archaeobotany 1, 33–42

Other publication/s:
Ralska-Jasiewiczowa, M. and van Geel, B. (1992) Early human disturbance of the natural environment recorded in annually laminated sediments of Lake Gosciaz, Central Poland. Vegetation History and Archaeobotany 1, 33–42
van Geel, B., Odgaard, B.V. and Ralska-Jasiewiczowa, M. (1996) Cyanobacteria as indicators of phosphate-eutrophication of lakes and pools in the past. Pact 50, 399–415

Description: Akinetes (spores) hyaline, tube-shaped, (15.5–) 19–33 (–58) x 4–7 μm, excl. the (not always preserved) 2.7–3.1 µm broad and 1.9–4.9 μm deep, cup-shaped appendages at the rounded ends of the spores; Spores often broken off at one end.

(Sub-) Fossil occurence: No information

Co-occurence: No information

Modern occurence: Aphanizomenon sometimes forms populations dense enough to be termed „water blooms“. Considering the season of water blooms (often late summer) and the evidence from fossil records, most cyanobacteria are evidently thermophilous.

Palaeoenvironmental indication: Relatively warm conditions / Overfertilisation