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Growth rates, age determination, and calcification levels in Flustra foliacea (L.) (Bryozoa: Cheilostomata): Preliminary assessment
Fortunato, H.; Schäfer, P.; Blaschek, H. (2013). Growth rates, age determination, and calcification levels in Flustra foliacea (L.) (Bryozoa: Cheilostomata): Preliminary assessment, in: Ernst, A. et al. Bryozoan Studies 2010. Lecture Notes in Earth System Sciences, 143: pp. 59-74. http://dx.doi.org/10.1007/978-3-642-16411-8_5
In: Ernst, A.; Schäfer, P.; Scholz, J. (Ed.) (2013). Bryozoan Studies 2010. Lecture Notes in Earth System Sciences, 143. Springer: Berlin. ISBN 978-3-642-16410-1. viii, 463 pp. https://dx.doi.org/10.1007/978-3-642-16411-8
In: Lecture Notes in Earth System Sciences. Springer: Heidelberg; Berlin. ISSN 2193-8571; e-ISSN 2193-858X
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Trefwoorden
    ANE, Baltic
    ANE, North Sea
    Chemistry > Geochemistry
    Climatic changes
    Morphology
    Flustra foliacea (Linnaeus, 1758) [WoRMS]
    Baltic Sea [Marine Regions]; Noordzee [Marine Regions]
    Marien/Kust
Auteurs  Top 
  • Fortunato, H.
  • Schäfer, P.
  • Blaschek, H.
Abstract
    Potential consequences for species distribution, abundances and diversity and their imprint in food chains and ecosystems call for more studies of the short and long term impacts of ocean acidification. Bryozoans have been overlooked in this respect even though they play an important role in benthic temperate ecosystems. Flustra foliacea colonies from the North and Baltic Seas were used to assess morphology, growth rates, wall structure and preservation aiming to build up a baseline to use this species as a ‘sentinel’ of acidification levels. Though no significant differences in mean zooid size among the studied basins were found, North Sea colonies show periodic oscillations across generations in mean frontal area index and zooid density. Preliminary geochemistry analyzes show: (1) similar carbon contents (TC, TIC, TOC) in both basins; (2) skeletal walls composed of IMC; (3) over 50% weight loss in dissolution experiments during the first hour. A winter growth stop marked by growth-check lines is postulated. In order to obtain calibrated results, we need experimental data, and moreover, access to collections done over the past 200 years.
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