Toward an ecologically realistic experimental system to investigate the multigenerational effects of ocean warming and acidification on benthic invertebrates

IF 2.1 3区 地球科学 Q2 LIMNOLOGY
Frédéric Gazeau, Pierre Urrutti, Alexandre Dousset, Nicolas Brodu, Marion Richard, Rémi Villeneuve, Éric Pruvost, Steeve Comeau, Hugo Koechlin, Fabrice Pernet
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Abstract

Human activities over the past 150 yr have led to significant carbon dioxide (CO2) emissions, causing global warming and ocean acidification. Surface ocean temperature has risen by 0.93°C since 1850, with projections of an additional +1.42°C to 3.47°C by 2080–2099. Ocean acidification, driven by CO2 absorption, has already lowered seawater pH by 0.1 units, affecting calcifying organisms, including shelled mollusks. Long-term multigenerational studies on mollusk responses to both ocean acidification and warming, under realistic environmental conditions, are scarce. To address this knowledge gap, two mobile experimental units that can be deployed at the vicinity of shellfish farming areas were developed within the framework of the CocoriCO2 project. The experimental systems were designed to manipulate temperature and pH as offsets from ambient conditions. The experimental units have shown their effectiveness in terms of controlling and maintaining pH and temperature to assess the multigenerational effects of ocean warming and acidification on benthic invertebrates. Finally, the developed experimental systems can be modified easily to provide an educated assessment of the impact of other relevant environmental changes such as deoxygenation and changes in salinity.

Abstract Image

建立符合生态学实际的实验系统,研究海洋变暖和酸化对底栖无脊椎动物的多代影响
在过去的 150 年中,人类活动排放了大量二氧化碳(CO2),导致全球变暖和海洋酸化。自 1850 年以来,海洋表层温度已经上升了 0.93°C,预计到 2080-2099 年还将上升 +1.42°C 至 3.47°C。由二氧化碳吸收驱动的海洋酸化已经使海水pH值降低了0.1个单位,影响了钙化生物,包括有壳软体动物。在现实环境条件下,关于软体动物对海洋酸化和气候变暖的反应的长期多代研究十分稀少。为了填补这一知识空白,我们在CocoriCO2项目框架内开发了两个可部署在贝类养殖区附近的移动实验装置。实验系统的设计目的是调节温度和 pH 值,以抵消环境条件的影响。实验装置在控制和维持 pH 值和温度方面显示出其有效性,可用于评估海洋变暖和酸化对底栖无脊椎动物的多代影响。最后,所开发的实验系统可以很容易地进行修改,以便对脱氧和盐度变化等其他相关环境变化的影响进行有依据的评估。
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来源期刊
CiteScore
4.80
自引率
3.70%
发文量
56
审稿时长
3 months
期刊介绍: Limnology and Oceanography: Methods (ISSN 1541-5856) is a companion to ASLO''s top-rated journal Limnology and Oceanography, and articles are held to the same high standards. In order to provide the most rapid publication consistent with high standards, Limnology and Oceanography: Methods appears in electronic format only, and the entire submission and review system is online. Articles are posted as soon as they are accepted and formatted for publication. Limnology and Oceanography: Methods will consider manuscripts whose primary focus is methodological, and that deal with problems in the aquatic sciences. Manuscripts may present new measurement equipment, techniques for analyzing observations or samples, methods for understanding and interpreting information, analyses of metadata to examine the effectiveness of approaches, invited and contributed reviews and syntheses, and techniques for communicating and teaching in the aquatic sciences.
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