Trophic and stoichiometric consequences of nutrification for the intertidal tropical zoanthid Zoanthus sociatus

Leal, Miguel C.; Rocha, Rui J.M.; Anaya-Rojas, Jaime Mauricio; Cruz, Igor C.S.; Ferrier-Pagès, Christine (2017). Trophic and stoichiometric consequences of nutrification for the intertidal tropical zoanthid Zoanthus sociatus. Marine pollution bulletin, 119(1), pp. 169-175. Elsevier 10.1016/j.marpolbul.2017.03.054

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Zoanthids 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.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Department of Biology > Institute of Ecology and Evolution (IEE)

UniBE Contributor:

Anaya-Rojas, Jaime Mauricio

Subjects:

500 Science > 570 Life sciences; biology

ISSN:

0025-326X

Publisher:

Elsevier

Language:

English

Submitter:

Marcel Häsler

Date Deposited:

11 Apr 2018 17:14

Last Modified:

11 Apr 2018 17:14

Publisher DOI:

10.1016/j.marpolbul.2017.03.054

PubMed ID:

28365021

BORIS DOI:

10.7892/boris.108580

URI:

https://boris.unibe.ch/id/eprint/108580

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