English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/89828
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE
Exportar a otros formatos:


Temperature Dependence of Oxygen Dynamics and Community Metabolism in a Shallow Mediterranean Macroalgal Meadow (Caulerpa prolifera)

AuthorsVaquer-Sunyer, Raquel ; Duarte, Carlos M. ; Jordá, Gabriel ; Ruiz-Halpern, Sergio
Issue Date2012
PublisherEstuarine Research Federation
CitationEstuaries and Coasts 35(5): 1182-1192 (2012)
AbstractHypoxia is emerging as a major threat to marine coastal biota. Predicting its occurrence and elucidating the driving factors are essential to set successful management targets to avoid its occurrence. This study aims to elucidate the effects of warming on the likelihood of hypoxia. High-frequency dissolved oxygen measurements have been used to estimate gross primary production (GPP), net ecosystem production (NEP) and community respiration (CR) in a shallow macroalgae (Caulerpa prolifera) ecosystem in a highly human-influenced closed Mediterranean bay. Daily averaged GPP and CR ranged from 0 to 1,240. 9 and 51. 4 to 1,297. 3 mmol O 2 m -2 day -1, respectively. The higher GPP and CR were calculated for the same day, when daily averaged water temperature was 28. 3 °C, and resulted in a negative NEP of -56. 4 mmol O 2 m -2 day -1. The ecosystem was net heterotrophic during the studied period, probably subsidized by allochthonous organic inputs from ground waters and from the surrounding town and boating activity. Oxygen dynamics and metabolic rates strongly depend on water temperature, with lower oxygen content at higher temperatures. The probability of hypoxic conditions increased at a rate of 0. 39 % °C -1 (±0. 14 % °C -1). Global warming will increase the likelihood of hypoxia in the bay studied, as well as in other semi-enclosed bays. © 2012 Coastal and Estuarine Research Federation.
Identifiersdoi: 10.1007/s12237-012-9514-y
issn: 1559-2723
Appears in Collections:(IMEDEA) Artículos
Files in This Item:
File Description SizeFormat 
accesoRestringido.pdf15,38 kBAdobe PDFThumbnail
Show full item record
Review this work

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