Produção Nacional
Revisado por pares
Trophic and stoichiometric consequences of nutrification for the intertidal tropical zoanthid Zoanthus sociatus
2017; Elsevier BV; Volume: 119; Issue: 1 Linguagem: Inglês
10.1016/j.marpolbul.2017.03.054
ISSN1879-3363
AutoresMiguel C. Leal, Rui J. M. Rocha, Jaime M. Anaya‐Rojas, Igor Cristino Silva Cruz, Christine Ferrier‐Pagès,
Tópico(s)Marine and coastal plant biology
ResumoZoanthids are conspicuous and abundant members of intertidal environments, where they are exposed to large environmental fluctuations and subject to increasing loads of anthropogenic nutrients. Here we assess the trophic ecology and stoichiometric consequences of nutrient loading for symbiotic zoanthids inhabiting different intertidal habitats. More specifically, we analysed the stable isotope signature (δ13C and δ15N), elemental composition (C, N and P) and stoichiometry (C:N, C:P, N:P) of Zoanthus sociatus differently exposed to nutrification. Results suggest that autotrophy is the main feeding mode of zoanthids and that the effect water nutrient content differently affects the elemental phenotype of zoanthids depending on tidal habitat. Additionally, habitat effects on Z. sociatus P-related stoichiometric traits highlight functional differences likely associated with variation in Symbiodinium density. These findings provide an innovative approach to assess how cnidarian-dinoflagellate symbioses response to ecosystem changes in environmentally dynamic reef flats, particularly nutrient loading.
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