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Co-occurrence networks reveal the central role of temperature in structuring the plankton community of the Thau Lagoon
Trombetta, T.; Vidussi, F.; Roques, C.; Mas, S.; Scotti, M.; Mostajir, B. (2021). Co-occurrence networks reveal the central role of temperature in structuring the plankton community of the Thau Lagoon. NPG Scientific Reports 11(1): 17675. https://dx.doi.org/10.1038/s41598-021-97173-y
In: Scientific Reports (Nature Publishing Group). Nature Publishing Group: London. ISSN 2045-2322; e-ISSN 2045-2322
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| Auteurs | | Top |
- Trombetta, T.
- Vidussi, F.
- Roques, C.
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- Mas, S.
- Scotti, M.
- Mostajir, B.
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| Abstract |
To identify the environmental factors that drive plankton community composition and structure in coastal waters, a shallow northwestern Mediterranean lagoon was monitored from winter to spring in two contrasting years. The campaign was based on high-frequency recordings of hydrological and meteorological parameters and weekly samplings of nutrients and the plankton community. The collected data allowed the construction of correlation networks, which revealed that water temperature was the most important factor governing community composition, structure and succession at different trophic levels, suggesting its ubiquitous food web control. Temperature favoured phytoplanktonic flagellates (Cryptophyceae, Chrysophyceae, and Chlorophyceae) and ciliates during winter and early spring. In contrast, it favoured Bacillariophyceae, dinoflagellates, phytoplankton < 6 µm and aloricate Choreotrichida during spring. The secondary factors were light, which influenced phytoplankton, and wind, which may regulate turbidity and the nutrient supply from land or sediment, thus affecting benthic species such as Nitzschia sp. and Uronema sp. or salinity-tolerant species such as Prorocentrum sp. The central role of temperature in structuring the co-occurrence network suggests that future global warming could deeply modify plankton communities in shallow coastal zones, affecting whole-food web functioning. |
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