Phytoplankton cell geometric shapes along Mediterranean seasonal environmental variability in natural and artificial lakes
| Autor: | Silvia Pulina, Elena Stanca, Antonella Luglié, Cecilia Teodora Satta, Bachisio Mario Padedda |
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| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Journal of Plankton Research. 44:208-223 |
| ISSN: | 1464-3774 0142-7873 |
| DOI: | 10.1093/plankt/fbac005 |
| Popis: | In this work, we grouped phytoplankton species according to their cell geometric shape for the first time in lake ecosystems. Field multiannual data were analyzed in order to understand the phytoplankton cell geometric shape distribution along the seasonal environmental variability in two Mediterranean lakes, a shallow natural lake and a deeper artificial lake. We characterized seasonally each lake on the basis of dominant phytoplankton cell geometric shapes, detecting the following common highlights comparing the two ecosystems: a complex and globular geometric shape (Cone + Half Sphere) with high mean volume and low mean surface-to-volume ratio in winter (at the deepest mixing layer); a variety of geometric shapes in spring (at the lowest nutrient concentrations), with a relevant contribution of simple and compact geometric shapes (Sphere and Cube) with low mean volume and high mean surface-to-volume ratio; a simple and elongated geometric shape (Cylinder) in summer (at thermal stratification conditions); a variety of geometric shapes in autumn (at intermediate environmental conditions), when the geometric shapes detected were at similar size. We provide new insights on how phytoplankton cell geometric shapes with similar and different sizes relate to the seasonal environmental variations in lake ecosystems, a topic relatively neglected in literature. |
| Databáze: | OpenAIRE |
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