Temporal dynamics of mesoplanktonic cnidarians in a subtropical estuary: Environmental drivers and possible trophic effects
| Autor: | Renato Mitsuo Nagata, Priscila Teixeira-Amaral, Vitória Rodrigues de Lemos, Erik Muxagata |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
education.field_of_study 010504 meteorology & atmospheric sciences biology Ecology 010604 marine biology & hydrobiology Population Aquatic Science Plankton Oceanography biology.organism_classification 01 natural sciences Productivity (ecology) Abundance (ecology) Liriope tetraphylla Species richness education Copepod 0105 earth and related environmental sciences Trophic level |
| Zdroj: | Estuarine, Coastal and Shelf Science. 249:107076 |
| ISSN: | 0272-7714 |
| Popis: | Planktonic cnidarians are important pelagic predators that occasionally reach extremely high densities. It is important to know how environmental variability affects their abundance and distribution in order to understand the population fluctuations and factors that drive their blooms. Plankton samples collected in the Patos Lagoon Estuary (PLE) during an 8-year period (2009–2017) were analyzed and the mesoplanktonic cnidarian community was quantified. The variability in abundance and composition was associated with environmental variables (temperature, salinity, chlorophyll a, and precipitation). From 234 samples, 23,861 specimens were classified into 34 taxa, of which 21 were determined at the species level. Liriope tetraphylla and Eucheilota maculata were the most frequent species, while Cnidostoma fallax was the most abundant, reaching ~11,369 ind. m−3. The temperature was positively related to richness/diversity, while chlorophyll a did not show a clear influence on the mesoplanktonic community. Under low salinity ( 25). Liriope tetraphylla and the blooms of C. fallax affected the mesozooplankton community, by drastically reducing copepod density and productivity. Eighteen taxa were considered rare ( |
| Databáze: | OpenAIRE |
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