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

Christian Pansch; Ali Nasrolahi; Yasmin Shirin Appelhans; Martin Wahl

doi:10.1007/s00227-012-2069-4

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

Christian Pansch^*, Ali Nasrolahi, Yasmin Shirin Appelhans, Martin Wahl

^*Corresponding author for this work

Research output: Contribution to journal › Article › Scientific › peer-review

26 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	2023-2035
Number of pages	13
Journal	Marine Biology
Volume	160
DOIs	https://doi.org/10.1007/s00227-012-2069-4
Publication status	Published - Aug 2013
Externally published	Yes
MoE publication type	A1 Journal article-refereed

Funding

Acknowledgments We thank the divers of the benthic ecology group at the GEOMAR and Jörn Thomsen for water sampling; Arne Körtzinger and Mandy Kierspel for pH, CT, and AT measurements; Jon Havenhand and Martin Ogemark for valuable advice on algal culture methods; Sarah Klünder and Giannina Hattich for maintenance as well as Hagen Pieper for map illustrations. This project was financed by the cluster of excellence ‘‘the future ocean’’ (Deutsche Forschungsgesellschaft—DFG; Neglected Bottleneck: D1067/34.1), the German National Academic Foundation and the BioAcid project (Federal Ministry of Education and Research—BMBF; D10/4.1.2; FKZ 03F0608A).

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10.1007/s00227-012-2069-4

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title = "Tolerance of juvenile barnacles (Amphibalanus improvisus) to warming and elevated pCO2",

abstract = "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.",

author = "Christian Pansch and Ali Nasrolahi and Appelhans, \{Yasmin Shirin\} and Martin Wahl",

note = "Funding Information: Acknowledgments We thank the divers of the benthic ecology group at the GEOMAR and J{\"o}rn Thomsen for water sampling; Arne K{\"o}rtzinger and Mandy Kierspel for pH, CT, and AT measurements; Jon Havenhand and Martin Ogemark for valuable advice on algal culture methods; Sarah Kl{\"u}nder and Giannina Hattich for maintenance as well as Hagen Pieper for map illustrations. This project was financed by the cluster of excellence {\textquoteleft}{\textquoteleft}the future ocean{\textquoteright}{\textquoteright} (Deutsche Forschungsgesellschaft—DFG; Neglected Bottleneck: D1067/34.1), the German National Academic Foundation and the BioAcid project (Federal Ministry of Education and Research—BMBF; D10/4.1.2; FKZ 03F0608A). Copyright: Copyright 2013 Elsevier B.V., All rights reserved.",

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doi = "10.1007/s00227-012-2069-4",

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N2 - 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.

AB - 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.

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SP - 2023

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JO - Marine Biology

JF - Marine Biology

ER -

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

Abstract

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