Tolerance of juvenile barnacles (Amphibalanus improvisus) to warming and elevated pCO2

Pansch, Christian, Nasrolahi, Ali, Appelhans, Yasmin and Wahl, Martin (2013) Tolerance of juvenile barnacles (Amphibalanus improvisus) to warming and elevated pCO2 Marine Biology, 160 (8). pp. 2023-2035. DOI 10.1007/s00227-012-2069-4.

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We investigated the impacts of warming and elevated pCO2 on newly settled Amphibalanus improvisus from Kiel Fjord, an estuarine ecosystem characterized by significant natural pCO2 variability. In two experiments, juvenile barnacles were maintained at two temperature and three pCO2 levels (20/24 °C, 700–2,140 μatm) for 8 weeks in a batch culture and at four pCO2 levels (20 °C, 620–2,870 μatm) for 12 weeks in a water flow-through system. Warming as well as elevated pCO2 hardly affected growth or the condition index of barnacles, although some factor combinations led to temporal significances in enhanced or reduced growth with an increase in pCO2. While warming increased the shell strength of A. improvisus individuals, elevated pCO2 had only weak effects. We demonstrate a strong tolerance of juvenile A. improvisus to mean acidification levels of about 1,000 μatm pCO2 as is already naturally experienced by the investigated barnacle population.

Document Type: Article
Additional Information: WOS:000323066600022
Keywords: ocean acidification
Research affiliation: OceanRep > The Future Ocean - Cluster of Excellence > FO-R08
OceanRep > The Future Ocean - Cluster of Excellence
Kiel University
OceanRep > GEOMAR > FB3 Marine Ecology > FB3-EOE-B Experimental Ecology - Benthic Ecology
Refereed: Yes
DOI etc.: 10.1007/s00227-012-2069-4
ISSN: 0025-3162
Projects: BIOACID, Future Ocean
Date Deposited: 12 Nov 2012 14:18
Last Modified: 16 Feb 2017 10:30

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