English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/176909
Share/Impact:
Statistics
logo share SHARE   Add this article to your Mendeley library MendeleyBASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE
Exportar a otros formatos:

Title

Biogenic habitat shifts under long-term ocean acidification show nonlinear community responses and unbalanced functions of associated invertebrates

AuthorsMilazzo, Marco; Alessi, C.; Quattrocchi, Federico CSIC ORCID; Chemello, Renato; D'Agostaro, R.; Gil, João CSIC ORCID ; Vaccaro, A. M.; Mirto, S.; Gristina, M.; Badalamenti, F.
KeywordsCarbon dioxide
Ocean acidification
Phase shift
Transplant
CO2 vents
Vermetid reef
Issue Date2019
PublisherElsevier
CitationScience of the Total Environment 667 : 41-48 (2019)
AbstractExperiments have shown that increasing dissolved CO2 concentrations (i.e. Ocean Acidification, OA) in marine ecosystems may act as nutrient for primary producers (e.g. fleshy algae) or a stressor for calcifying species (e.g., coralline algae, corals, molluscs). For the first time, rapid habitat dominance shifts and altered competitive replacement from a reef-forming to a non-reef-forming biogenic habitat were documented over one-year exposure to low pH/high CO2 through a transplant experiment off Vulcano Island CO2 seeps (NE Sicily, Italy). Ocean acidification decreased vermetid reefs complexity via a reduction in the reef-building species density, boosted canopy macroalgae and led to changes in composition, structure and functional diversity of the associated benthic assemblages. OA effects on invertebrate richness and abundance were nonlinear, being maximal at intermediate complexity levels of vermetid reefs and canopy forming algae. Abundance of higher order consumers (e.g. carnivores, suspension feeders) decreased under elevated CO2 levels. Herbivores were non-linearly related to OA conditions, with increasing competitive release only of minor intertidal grazers (e.g. amphipods) under elevated CO2 levels. Our results support the dual role of CO2 (as a stressor and as a resource) in disrupting the state of rocky shore communities, and raise specific concerns about the future of intertidal reef ecosystem under increasing CO2 emissions. We contribute to inform predictions of the complex and nonlinear community effects of OA on biogenic habitats, but at the sametime encourage the use ofmultiple natural CO2 gradients in providing quantitative data on changing community responses to long-term CO2 exposure.
DescriptionEste artículo contiene 8 páginas, 4 figuras.
URIhttp://hdl.handle.net/10261/176909
ISSN0048-9697
E-ISSN1879-1026
Appears in Collections:(CEAB) Artículos
Files in This Item:
File Description SizeFormat 
Restringido.pdf15,38 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.