<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE article PUBLIC "-//NLM//DTD Journal Publishing DTD v3.0 20080202//EN" "https://jats.nlm.nih.gov/nlm-dtd/publishing/3.0/journalpublishing3.dtd">
<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" article-type="research-article" dtd-version="3.0" xml:lang="en">
<front>
<journal-meta>
<journal-id journal-id-type="publisher">BG</journal-id>
<journal-title-group>
<journal-title>Biogeosciences</journal-title>
<abbrev-journal-title abbrev-type="publisher">BG</abbrev-journal-title>
<abbrev-journal-title abbrev-type="nlm-ta">Biogeosciences</abbrev-journal-title>
</journal-title-group>
<issn pub-type="epub">1726-4189</issn>
<publisher><publisher-name>Copernicus Publications</publisher-name>
<publisher-loc>Göttingen, Germany</publisher-loc>
</publisher>
</journal-meta>
<article-meta>
<article-id pub-id-type="doi">10.5194/bg-10-7481-2013</article-id>
<title-group>
<article-title>Medium-term exposure of the North Atlantic copepod  &lt;i&gt;Calanus finmarchicus&lt;/i&gt;  (Gunnerus, 1770) to CO&lt;sub&gt;2&lt;/sub&gt;-acidified seawater: effects on survival and development</article-title>
</title-group>
<contrib-group><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Pedersen</surname>
<given-names>S. A.</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Hansen</surname>
<given-names>B. H.</given-names>
</name>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Altin</surname>
<given-names>D.</given-names>
</name>
<xref ref-type="aff" rid="aff3">
<sup>3</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Olsen</surname>
<given-names>A. J.</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
</contrib-group><aff id="aff1">
<label>1</label>
<addr-line>Norwegian University of Science and Technology (NTNU), Dept. of Biology, Høgskoleringen 5, 7491 Trondheim, Norway</addr-line>
</aff>
<aff id="aff2">
<label>2</label>
<addr-line>SINTEF Materials and Chemistry, Marine Environmental Technology, Brattørkaia 17C, 7010 Trondheim, Norway</addr-line>
</aff>
<aff id="aff3">
<label>3</label>
<addr-line>BioTrix, 7022 Trondheim, Norway</addr-line>
</aff>
<pub-date pub-type="epub">
<day>21</day>
<month>11</month>
<year>2013</year>
</pub-date>
<volume>10</volume>
<issue>11</issue>
<fpage>7481</fpage>
<lpage>7491</lpage>
<permissions>
<copyright-statement>Copyright: &#x000a9; 2013 S. A. Pedersen et al.</copyright-statement>
<copyright-year>2013</copyright-year>
<license license-type="open-access">
<license-p>This work is licensed under the Creative Commons Attribution 3.0 Unported License. To view a copy of this licence, visit <ext-link ext-link-type="uri"  xlink:href="https://creativecommons.org/licenses/by/3.0/">https://creativecommons.org/licenses/by/3.0/</ext-link></license-p>
</license>
</permissions>
<self-uri xlink:href="https://bg.copernicus.org/articles/10/7481/2013/bg-10-7481-2013.html">This article is available from https://bg.copernicus.org/articles/10/7481/2013/bg-10-7481-2013.html</self-uri>
<self-uri xlink:href="https://bg.copernicus.org/articles/10/7481/2013/bg-10-7481-2013.pdf">The full text article is available as a PDF file from https://bg.copernicus.org/articles/10/7481/2013/bg-10-7481-2013.pdf</self-uri>
<abstract>
<p>The impact of medium-term exposure to CO&lt;sub&gt;2&lt;/sub&gt;-acidified seawater on
survival, growth and development was investigated in the North Atlantic
copepod &lt;i&gt;Calanus finmarchicus&lt;/i&gt;. Using a custom developed experimental
system, fertilized eggs and subsequent development stages were exposed to
normal seawater (390 ppm CO&lt;sub&gt;2&lt;/sub&gt;) or one of three different levels of
CO&lt;sub&gt;2&lt;/sub&gt;-induced acidification (3300, 7300, 9700 ppm CO&lt;sub&gt;2&lt;/sub&gt;). Following
the 28-day exposure period, survival was found to be unaffected by exposure
to 3300 ppm CO&lt;sub&gt;2&lt;/sub&gt;, but significantly reduced at 7300 and 9700 ppm
CO&lt;sub&gt;2&lt;/sub&gt;. Also, the proportion of copepodite stages IV to VI observed in the
different treatments was significantly affected in a manner that may indicate
a CO&lt;sub&gt;2&lt;/sub&gt;-induced retardation of the rate of ontogenetic development.
Morphometric analysis revealed a significant increase in size (prosome
length) and lipid storage volume in stage IV copepodites exposed to 3300 ppm
CO&lt;sub&gt;2&lt;/sub&gt; and reduced size in stage III copepodites exposed to 7300 ppm
CO&lt;sub&gt;2&lt;/sub&gt;. Together, the findings indicate that a &lt;i&gt;p&lt;/i&gt;CO&lt;sub&gt;2&lt;/sub&gt; level &amp;le;2000 ppm (the highest CO&lt;sub&gt;2&lt;/sub&gt; level expected by the year 2300) will
probably not directly affect survival in &lt;i&gt;C. finmarchicus&lt;/i&gt;.
Longer term experiments at more moderate CO&lt;sub&gt;2&lt;/sub&gt; levels are, however,
necessary before the possibility that growth and development may be affected
below 2000 ppm CO&lt;sub&gt;2&lt;/sub&gt; can be ruled out.</p>
</abstract>
<counts><page-count count="11"/></counts>
</article-meta>
</front>
<body/>
<back>
<ref-list>
<title>References</title>
<ref id="ref1">
<label>1</label><mixed-citation publication-type="other" xlink:type="simple">Anderson, D. H. and Robinson, R. J.: Rapid electrometric determination of the alkalinity of sea water using a glass electrode, Ind. Eng. Chem., 18, 767–769, 1946.</mixed-citation>
</ref>
<ref id="ref2">
<label>2</label><mixed-citation publication-type="other" xlink:type="simple">Bathmann, U. V., Noji, T. T., Voss, M., and Peinert, R.: Copepod fecal pellets: abundance, sedimentation and content at a permanent station in the Norwegian Sea in May/June 1986, Mar. Ecol. Prog. Ser., 38, 45–51, 1987.</mixed-citation>
</ref>
<ref id="ref3">
<label>3</label><mixed-citation publication-type="other" xlink:type="simple">Barros, P., Sobral, P., Range, P., Chícharo, L., and Matias, D.: Effects of sea-water acidification on fertilization and larval development of the oyster &lt;i&gt;Crassostrea gigas&lt;/i&gt;, J. Exp. Mar. Biol. Ecol., 440, 200–206, 2013.</mixed-citation>
</ref>
<ref id="ref4">
<label>4</label><mixed-citation publication-type="other" xlink:type="simple">Beaugrand, G. and Kirby, R. R.: Climate, plankton and cod, Glob. Change Biol., 16, 1268–1280, 2010.</mixed-citation>
</ref>
<ref id="ref5">
<label>5</label><mixed-citation publication-type="other" xlink:type="simple">Beniash, E., Ivanina, A., Lieb, N. S., Kurochkin, I., and Sokolova, I. M.: Elevated level of carbon dioxide affects metabolism and shell formation in oysters &lt;i&gt;Crassostrea virginica&lt;/i&gt;, Mar. Ecol.-Prog. Ser., 419, 95–108, 2010.</mixed-citation>
</ref>
<ref id="ref6">
<label>6</label><mixed-citation publication-type="other" xlink:type="simple">Blackford, J., Jones, N., Proctor, R., Holt, J., Widdicombe, S., Lowe, D., and Rees, A.: An initial assessment of the potential environmental impact of CO&lt;sub&gt;2&lt;/sub&gt; escape from marine carbon capture and storage systems, P. I. Mech. Eng. A, 223, 269–280, 2009.</mixed-citation>
</ref>
<ref id="ref7">
<label>7</label><mixed-citation publication-type="other" xlink:type="simple">Caldeira, K. and Wickett, M. E.: Anthropogenic carbon and ocean pH, Nature, 425, 365 pp., 2003.</mixed-citation>
</ref>
<ref id="ref8">
<label>8</label><mixed-citation publication-type="other" xlink:type="simple">Caldeira, K. and Wickett, M. E.: Ocean model predictions of chemistry changes from carbon dioxide emissions to the atmosphere and ocean, J. Geophys. Res-Oceans., 110, CO9S04, &lt;a href=&quot;http://dx.doi.org/10.1029/2004JC002671&quot;&gt;https://doi.org/10.1029/2004JC002671&lt;/a&gt;, 2005.</mixed-citation>
</ref>
<ref id="ref9">
<label>9</label><mixed-citation publication-type="other" xlink:type="simple">Campbell, R. G., Wagner, M. M., Teegarden, G. J., Boudreau, C. A., and Durbin, E. G: Growth and development rates of the copepod &lt;i&gt;Calanus finmarchicus&lt;/i&gt; reared in the laboratory, Mar. Ecol-Prog. Ser., 221, 161–183, 2001.</mixed-citation>
</ref>
<ref id="ref10">
<label>10</label><mixed-citation publication-type="other" xlink:type="simple">Clark, D., Lamare, M., and Barker, M.: Response of sea urchin pluteus larvae (Echinodermata: Echinoidea) to reduced seawater pH: a comparison among a tropical, temperate, and a polar species, Mar. Biol., 156, 1125–1137, 2009.</mixed-citation>
</ref>
<ref id="ref11">
<label>11</label><mixed-citation publication-type="other" xlink:type="simple">Comeau, S., Gorsky, G., Jeffree, R., Teyssié, J.-L., and Gattuso, J.-P.: Impact of ocean acidification on a key Arctic pelagic mollusc (Limacina helicina), Biogeosciences, 6, 1877–1882, &lt;a href=&quot;http://dx.doi.org/10.5194/bg-6-1877-2009&quot;&gt;https://doi.org/10.5194/bg-6-1877-2009&lt;/a&gt;, 2009.</mixed-citation>
</ref>
<ref id="ref12">
<label>12</label><mixed-citation publication-type="other" xlink:type="simple">Conover, R. J.: Comparative life histories in the genera &lt;i&gt;Calanus&lt;/i&gt; and &lt;i&gt;Neocalanus&lt;/i&gt; in high latitudes of the northern hemisphere, Hydrobiologia, 167/168, 127–142, 1988.</mixed-citation>
</ref>
<ref id="ref13">
<label>13</label><mixed-citation publication-type="other" xlink:type="simple">Dickson, A. G. and Millero, F. J.: A comparison of the equilibrium-constants for the dissociation of carbonic-acid in seawater media, Deep-Sea Res., 34, 1733–1743, 1987.</mixed-citation>
</ref>
<ref id="ref14">
<label>14</label><mixed-citation publication-type="other" xlink:type="simple">Dupont, S., Havenhand, J., Thorndyke, W., Peck, L., and Thorndyke, M.: Near-future level of CO&lt;sub&gt;2&lt;/sub&gt;-driven ocean acidification radically affects larval survival and development in the brittlestar &lt;i&gt;Ophiothrix fragilis&lt;/i&gt;, Mar. Ecol. Prog. Ser., 373, 285–294, 2008.</mixed-citation>
</ref>
<ref id="ref15">
<label>15</label><mixed-citation publication-type="other" xlink:type="simple">Edvardsen, A., Pedersen, J. M., Slagstad, D., Semenova, T., and Timonin, A.: Distribution of overwintering &lt;i&gt;Calanus&lt;/i&gt; in the North Norwegian Sea, Ocean Sci., 2, 87–96, 2006.</mixed-citation>
</ref>
<ref id="ref16">
<label>16</label><mixed-citation publication-type="other" xlink:type="simple">Edwards, M., Johns, D. G., Licandro, P., John, A. W. G., and Stevens, D. P.: Ecological Status Report: Results from the CPR survey 2004/2005, SAHFOS Technical Report, 3, 1–8, Sir Alister Hardy Foundation for Ocean Science (SAHFOS), Plymouth, UK, ISSN 1744–0750, 2006.</mixed-citation>
</ref>
<ref id="ref17">
<label>17</label><mixed-citation publication-type="other" xlink:type="simple">Edwards, M., Helaouet, P., Johns, D. G., Batten, S., Beaugrand, G., Chiba, S., Flavell, M., Head, E., Hosie, G., Richardson, A. J., Takahashi, K., Verheye, H. M., Ward, P., and Wootton, M.: Global Marine Ecological Status Report: Results from the global CPR survey 2010/2011, SAHFOS Technical Report, 9, Plymouth, UK, ISSN 1744-0750, 1–40, 2012.</mixed-citation>
</ref>
<ref id="ref18">
<label>18</label><mixed-citation publication-type="other" xlink:type="simple">Egilsdottir, H., Spicer, J. I., and Rundle, S. D.: The effect of CO&lt;sub&gt;2&lt;/sub&gt; acidified sea water and reduced salinity on aspects of the embryonic development of the amphipod&lt;i&gt; Echinogammarus marinus&lt;/i&gt; (Leach), Mar. Pollut. Bull., 58, 1187–1191, 2009.</mixed-citation>
</ref>
<ref id="ref19">
<label>19</label><mixed-citation publication-type="other" xlink:type="simple">Ellis, R. P., Bersey, J., Rundle, S. D., Hall-Spencer, J. M., and Spicer, J. I.: Subtle but significant effects of CO&lt;sub&gt;2&lt;/sub&gt; acidified seawater on embryos of the intertidal snail, &lt;i&gt;Littorina obtusata&lt;/i&gt;, Aquat. Biol., 5, 41–48, 2009.</mixed-citation>
</ref>
<ref id="ref20">
<label>20</label><mixed-citation publication-type="other" xlink:type="simple">EU: Directive 2009/31/EC of the European Parliament and the council of 23 April 2009 on the geological storage of carbon dioxide and amending Council Directive 85/337/EEC, 2009.</mixed-citation>
</ref>
<ref id="ref21">
<label>21</label><mixed-citation publication-type="other" xlink:type="simple">Fabry, V. J., Seibel, B. A., Feely, R. A., and Orr, J. C.: Impacts of ocean acidification on marine fauna and ecosystem processes, ICES J. Mar. Sci., 65, 414–432, 2008.</mixed-citation>
</ref>
<ref id="ref22">
<label>22</label><mixed-citation publication-type="other" xlink:type="simple">Findlay, H. S., Kendall, M. A., Spicer, J. I., and Widdicombe, S.: Future high CO&lt;sub&gt;2&lt;/sub&gt; in the intertidal may compromise adult barnacle &lt;i&gt;Semibalanus balanoides&lt;/i&gt; survival and embryonic development rate, Mar. Ecol. Prog. Ser., 389, 193–202, 2009.</mixed-citation>
</ref>
<ref id="ref23">
<label>23</label><mixed-citation publication-type="other" xlink:type="simple">Fitzer, S. C., Caldwell, G. S., Close, A. J., Clare, A. S., Upstill-Goddard, R. C., and Bentley, M. G.: Ocean acidification induces multi-generational decline in copepod naupliar production with possible conflict for reproductive resource allocation, J. Exp. Mar. Biol. Ecol., 418/419, 30–36, 2012.</mixed-citation>
</ref>
<ref id="ref24">
<label>24</label><mixed-citation publication-type="other" xlink:type="simple">Gerlagh, R. and van der Zwaan, B.: Evaluating uncertain CO&lt;sub&gt;2&lt;/sub&gt; abatement over the very long term, Environ. Model. Assess., 17, 1–12, 2012.</mixed-citation>
</ref>
<ref id="ref25">
<label>25</label><mixed-citation publication-type="other" xlink:type="simple">Gonzalez-Bernat, M. J., Lamare, M., and Barker, M.: Effects of reduced seawater pH on fertilisation, embryogenesis and larval development in the Antarctic seastar &lt;i&gt;Odontaster validus&lt;/i&gt;, Polar Biol., 36, 235–247, 2013.</mixed-citation>
</ref>
<ref id="ref26">
<label>26</label><mixed-citation publication-type="other" xlink:type="simple">Hansen, B. H., Altin, D., Nordtug, T., and Olsen, A. J.: Suppression subtractive hybridization library prepared from the copepod &lt;i&gt;Calanus finmarchicus&lt;/i&gt; exposed to a sublethal mixture of environmental stressors, Comp. Biochem. Physiol. D, 2, 250–256, 2007.</mixed-citation>
</ref>
<ref id="ref27">
<label>27</label><mixed-citation publication-type="other" xlink:type="simple">Havenhand, J. N., Buttler, F.-R., Thorndyke, M. C., and Williamson, J. E.: Near-future levels of ocean acidification reduce fertilization success in a sea urchin, Curr. Biol., 18, R651–R652, 2008.</mixed-citation>
</ref>
<ref id="ref28">
<label>28</label><mixed-citation publication-type="other" xlink:type="simple">Holloway, S.: Carbon dioxide capture and geological storage, Phil. T. R. Soc. A., 365, 1095–1107, 2007.</mixed-citation>
</ref>
<ref id="ref29">
<label>29</label><mixed-citation publication-type="other" xlink:type="simple">Houghton, J. T., Ding, Y., Griggs, D. J., Noguer, M., van der Linden, P. J., Dai, X., Maskell, K., and Johnson, C. A. (Eds.): Climate Change 2001: the Scientific Basis, Contribution of Working Group I to the Third Assessment Report of the Intergovernmental Panel on Climate Change, Cambridge University Press, New York, 881 pp., 2001.</mixed-citation>
</ref>
<ref id="ref30">
<label>30</label><mixed-citation publication-type="other" xlink:type="simple">Jackson, J. B. C.: The future of the ocean past, Philos. T. R. Soc. Lon. B., 365, 3765–3778, 2010.</mixed-citation>
</ref>
<ref id="ref31">
<label>31</label><mixed-citation publication-type="other" xlink:type="simple">Kurihara, H.: Effects of CO&lt;sub&gt;2&lt;/sub&gt;-driven ocean acidification on the early developmental stages of invertebrates, Mar. Ecol. Prog. Ser., 373, 275–284, 2008.</mixed-citation>
</ref>
<ref id="ref32">
<label>32</label><mixed-citation publication-type="other" xlink:type="simple">Kurihara, H. and Ishimatsu, A.: Effects of high CO&lt;sub&gt;2&lt;/sub&gt; seawater on the copepod (&lt;i&gt;Acartia tsuensis&lt;/i&gt;) through all life stages and subsequent generations, Mar. Pollut. Bull., 56, 1086–1090, 2008.</mixed-citation>
</ref>
<ref id="ref33">
<label>33</label><mixed-citation publication-type="other" xlink:type="simple">Kurihara, H., Shimode, S., and Shirayama, Y.: Sub-lethal effects of elevated concentration of CO&lt;sub&gt;2&lt;/sub&gt; on planktonic copepods and sea urchins, J. Oceanogr., 60, 743–750, 2004a.</mixed-citation>
</ref>
<ref id="ref34">
<label>34</label><mixed-citation publication-type="other" xlink:type="simple">Kurihara, H., Shimode, S., and Shirayama., Y.: Effects of raised CO&lt;sub&gt;2&lt;/sub&gt; concentration on the egg production rate and early development of two marine copepods (&lt;i&gt;Acartia steueri&lt;/i&gt; and &lt;i&gt;Acartia erythraea&lt;/i&gt;), Mar. Pollut. Bull. 49, 721–727, 2004b.</mixed-citation>
</ref>
<ref id="ref35">
<label>35</label><mixed-citation publication-type="other" xlink:type="simple">Kwasniewski, S., Gluchowska, M., Walkusz, W., Karnovsky, N. J., Jakubas, D., Wojczulanis-Jakubas, K., Harding, A. M. A., Goszczko, I., Cisek, M., Beszczynska-Möller, A., Walcowski, W., Weslawski, J. M., and Stempniewicz, L.: Interannual changes in zooplankton on the West Spitsbergen Shelf in relation to hydrography and their consequences for the diet of planktivorous seabirds, ICES J. Mar. Sci., 69, 890–901, 2012.</mixed-citation>
</ref>
<ref id="ref36">
<label>36</label><mixed-citation publication-type="other" xlink:type="simple">London Protocol: Amendment Annex I to the London Protocol, LP 1/6, April 28, &lt;a href=&quot;www.londonprotocol.imo.org/OurWork/Environment/SpecialProgrammesAndInitiatives/Pages/London-Convention-and-Protocol.aspx&quot;&gt;www.londonprotocol.imo.org&lt;/a&gt;, 2006.</mixed-citation>
</ref>
<ref id="ref37">
<label>37</label><mixed-citation publication-type="other" xlink:type="simple">Lopez, M. D. G.: Effect of starvation on development and stage in naupliar &lt;i&gt;Calanus pacificus&lt;/i&gt;: implications for development time of field cohorts, Mar. Ecol. Progr. Ser., 75, 79–89, 1996.</mixed-citation>
</ref>
<ref id="ref38">
<label>38</label><mixed-citation publication-type="other" xlink:type="simple">Marshall, S. M. and Orr, A. P. (Eds.): The Biology of a Marine Copepod. Springer-Verlag, Berlin, Heidelberg, New York, 1972.</mixed-citation>
</ref>
<ref id="ref39">
<label>39</label><mixed-citation publication-type="other" xlink:type="simple">Mayor, D. J., Matthews, C., Cook, K., Zuur, A. F., and Hay, S.: CO&lt;sub&gt;2&lt;/sub&gt;-induced acidification affects hatching success in &lt;i&gt;Calanus finmarchicus&lt;/i&gt;, Mar. Ecol. Prog. Ser., 350, 91–97, 2007.</mixed-citation>
</ref>
<ref id="ref40">
<label>40</label><mixed-citation publication-type="other" xlink:type="simple">Mayor, D. J., Everett, N. R., and Cook, K. B.: End of century ocean warming and acidification effects on reproductive success in a temperate marine copepod, J. Plankton Res., 34, 258–262, 2012.</mixed-citation>
</ref>
<ref id="ref41">
<label>41</label><mixed-citation publication-type="other" xlink:type="simple">Mauchline, J.: The Biology of Calanoid Copepods, in: Advances in Marine Biology, edited by: Blaxter, J. H. S., Southward, A. J., and Tyler, P. A., Academic Press, London, vol. 33, 1998.</mixed-citation>
</ref>
<ref id="ref42">
<label>42</label><mixed-citation publication-type="other" xlink:type="simple">Mehrbach, C., Culberson, C. H., Hawley, J. E., and Pytkowicz, R. M.: Measurment of apparent dissociation-constants of carbonic-acid in seawater at atmospheric-pressure, Limnol. Oceanogr., 18, 897–907, 1973.</mixed-citation>
</ref>
<ref id="ref43">
<label>43</label><mixed-citation publication-type="other" xlink:type="simple">Melzner, F., Stange, P., Trübenbach, K., Thomsen, J., Casties, I., Panknin, U., Gorb, S. N., and Gutowska, M. A.: Food supply and seawater &lt;i&gt;p&lt;/i&gt;CO&lt;sub&gt;2&lt;/sub&gt; impact calcification and internal shell dissolution in the blue mussel &lt;i&gt;Mytilus edulis&lt;/i&gt;, PLoS ONE, 6, e24223, &lt;a href=&quot;http://dx.doi.org/10.1371/journal.pone.0024223&quot;&gt;https://doi.org/10.1371/journal.pone.0024223&lt;/a&gt;, 2011.</mixed-citation>
</ref>
<ref id="ref44">
<label>44</label><mixed-citation publication-type="other" xlink:type="simple">Metz, B., Davidson, O., de Coninck, H. C., Loos, M., and Meyer, L. A. (Eds.): IPCC Special Report on Carbon Dioxide Capture and Storage: Prepared by Working Group III of the Intergovernmental Panel on Climate Change, Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA, 442 pp., 2005.</mixed-citation>
</ref>
<ref id="ref45">
<label>45</label><mixed-citation publication-type="other" xlink:type="simple">Miller, C. B., Morgan, C. A., Prahl, F. G., and Sparrow, M. A.: Storage lipids of the copepod &lt;i&gt;Calanus finmarchicus &lt;/i&gt;from Georges Bank and the Gulf of Maine, Limnol. Oceanogr., 43, 488–497, 1998.</mixed-citation>
</ref>
<ref id="ref46">
<label>46</label><mixed-citation publication-type="other" xlink:type="simple">Monaco Declaration: Second International Symposium on the Ocean in a High-CO&lt;sub&gt;2&lt;/sub&gt; world, Monaco, 6–9 October 2008, available at: &lt;a href=&quot;http://ocean-acidification.net/Symposium2008/MonacoDeclaration.pdf&quot;&gt;http://ocean-acidification.net/Symposium2008/MonacoDeclaration.pdf&lt;/a&gt;, 2009.</mixed-citation>
</ref>
<ref id="ref47">
<label>47</label><mixed-citation publication-type="other" xlink:type="simple">Morita, M., Suwa, R., Iguchi, A., Nakamura, M., Shimada, K., Sakai, K., and Suzuki, A.: Ocean acidification reduces sperm flagellar motility in broadcast spawning reef invertebrates, Zygote, 18, 103–107, 2009.</mixed-citation>
</ref>
<ref id="ref48">
<label>48</label><mixed-citation publication-type="other" xlink:type="simple">Parsons, R., Raven, J. A., and Sprent, J. I.: A simple open flow system used to measure acetylene reduction activity of &lt;i&gt;Sesbania rostrata&lt;/i&gt; stem and root nodules, J. Exp. Bot., 43, 595–604, 1992.</mixed-citation>
</ref>
<ref id="ref49">
<label>49</label><mixed-citation publication-type="other" xlink:type="simple">Pascal, P.-Y., Fleeger, J. W., Galvez, F., and Carman, K. R.: The toxicological interaction between ocean acidity and metals in coastal meiobenthic copepods, Mar. Pollut. Bull, 66, 2201–2208, 2010.</mixed-citation>
</ref>
<ref id="ref50">
<label>50</label><mixed-citation publication-type="other" xlink:type="simple">Pierrot, D., Lewis, E., and Wallace, D. W. R.: MS Excel Program Developed for CO&lt;sub&gt;2&lt;/sub&gt; System Calculations, ORNL/CDIAF-105a, Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, US Department of Energy, Oak Ridge, Tennessee, 2006.</mixed-citation>
</ref>
<ref id="ref51">
<label>51</label><mixed-citation publication-type="other" xlink:type="simple">Planque, B. and Batten, S. D.: &lt;i&gt;Calanus finmarchicus&lt;/i&gt; in the North Atlantic; the year of &lt;i&gt;Calanus&lt;/i&gt; in the context of interdecadal changes, ICES J. Mar. Sci., 57, 1528–1535, 2000.</mixed-citation>
</ref>
<ref id="ref52">
<label>52</label><mixed-citation publication-type="other" xlink:type="simple">Runge, J. A.: Should we expect a relationship between primary production and fisheries?, The role of copepod dynamics as a filter of trophic variability, Hydrobiologia, 167/168, 61–71, 1988.</mixed-citation>
</ref>
<ref id="ref53">
<label>53</label><mixed-citation publication-type="other" xlink:type="simple">Sabine, C. L., Feely, R. A., Gruber, N., Key, R. M., Lee, K., Bullister, J. L., Wanninkhof, R., Wong, C. S., Wallace, D. W. R., Tilbrook, B., Millero, F. J., Peng, T. H., Kozyr, A., Ono, T., and Rios, A. F.: The oceanic sink for anthropogenic CO&lt;sub&gt;2&lt;/sub&gt;, Science, 305, 367–371, 2004.</mixed-citation>
</ref>
<ref id="ref54">
<label>54</label><mixed-citation publication-type="other" xlink:type="simple">Siegenthaler, U., Stocker, T. F., Monnin, E., Luethi, D., Schwander, J., Stauffer, B., Raynaud, D., Barnola, J. M., Fisher, H., Masson-Delmotte, V., and Jouzel, J.: Stable carbon cycle–climate relationship during the last Pleistocene, Science, 310, 1313–1317, 2005.</mixed-citation>
</ref>
<ref id="ref55">
<label>55</label><mixed-citation publication-type="other" xlink:type="simple">Solomon, S., Qin, D., Manning, M., Chen, Z., Marquis, M., Averyt, K. B., Tignor, M., and Miller, H. L. (Eds.): Climate Change 2007: The Physical Science Basis, Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, Cambridge University Press, Cambridge, New York, 996 pp., 2007.</mixed-citation>
</ref>
<ref id="ref56">
<label>56</label><mixed-citation publication-type="other" xlink:type="simple">Stumpp, M., Wren, J., Melzner, F., Thorndyke, M. C., and Dupont, S. T.: CO&lt;sub&gt;2&lt;/sub&gt; induced seawater acidification impacts sea urchin larval development I: Elevated metabolic rates decrease scope for growth and induce developmental delay, Comp. Biochem. Physiol. A, 160, 331–340, 2011.</mixed-citation>
</ref>
<ref id="ref57">
<label>57</label><mixed-citation publication-type="other" xlink:type="simple">Svensson, C. J., Jenkins, S. R., Hawkins, S. J., and Åberg, P.: Population resistance to climate change: modeling the effects of low recruitment in open populations, Oecologia, 142, 117–126, 2005.</mixed-citation>
</ref>
<ref id="ref58">
<label>58</label><mixed-citation publication-type="other" xlink:type="simple">Takahashi, T. and Ohno, A.: The temperature effect on the development of calanoid copepod, &lt;i&gt;Acartia tsuensis&lt;/i&gt;, with some comments to morphogenesis, J. Oceanogr., 52, 125–137, 1996.</mixed-citation>
</ref>
<ref id="ref59">
<label>59</label><mixed-citation publication-type="other" xlink:type="simple">Talmage, S. C. and Gobler, C. J.:The effects of elevated carbon dioxide concentrations on the metamorphosis, size, and survival of larval hard clams (&lt;i&gt;Mercenaria mercenaria&lt;/i&gt;), bay scallops (&lt;i&gt;Argopecten irradians&lt;/i&gt;), and Eastern oysters (&lt;i&gt;Crassostrea virginica&lt;/i&gt;), Limnol. Oceanogr., 54, 2072–2080, 2009.</mixed-citation>
</ref>
<ref id="ref60">
<label>60</label><mixed-citation publication-type="other" xlink:type="simple">Todgham, A. E. and Hofmann, G. E.: Transcriptomic response of sea urchin larvae &lt;i&gt;Strongylocentrotus purpuratus&lt;/i&gt; to CO&lt;sub&gt;2&lt;/sub&gt;-driven seawater acidification, J. Exp. Biol., 212, 2579–2594, 2009.</mixed-citation>
</ref>
<ref id="ref61">
<label>61</label><mixed-citation publication-type="other" xlink:type="simple">Weydmann, A, Søreide, J. E., Kwasniewski, S., and Widdicombe, S.: Influence of CO&lt;sub&gt;2&lt;/sub&gt;-induced acidification on the reproduction of a key Arctic copepod &lt;i&gt;Calanus glacialis&lt;/i&gt;, J. Exp. Mar. Biol. Ecol, 428, 39–42, 2012.</mixed-citation>
</ref>
<ref id="ref62">
<label>62</label><mixed-citation publication-type="other" xlink:type="simple">Wood, H. L., Spicer, J. I., and Widdicombe, S.: Ocean acidification may increase calcification rates, but at a cost. P. Roy. Soc. B-Biol. Sci., 275, 1767–1773, 2008.</mixed-citation>
</ref>
<ref id="ref63">
<label>63</label><mixed-citation publication-type="other" xlink:type="simple">Zhang, D., Li, S., Wang, G., and Guo, D.: Impacts of CO&lt;sub&gt;2&lt;/sub&gt;-driven seawater acidification on survival, egg production rate and hatching success of four marine copepods, Acta Oceanol. Sin., 30, 86–94, 2011.</mixed-citation>
</ref>
</ref-list>
</back>
</article>