Effects of temperature and pH on the growth, calcification, and biomechanics of two species of articulated coralline algae
Effects of temperature and pH on the growth, calcification, and biomechanics of two species of articulated coralline algae
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DOI：
10.3354/meps14166
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发表时间：
2022
影响因子：
2.5
通讯作者：
R. Guenther;Emanuelle Porcher;E. Carrington;P. Martone
中科院分区：
文献类型：
--
作者：
R. Guenther;Emanuelle Porcher;E. Carrington;P. Martone
：海洋变暖和酸化预计将影响海洋生物的生理，特别是海洋钙剂，它们必须沉积碳酸钙并防止溶解。特别令人担忧的是关节珊瑚藻类，它们必须同时保持钙化的节段(膝间)和未钙化的关节(膝状体)，才能在被海浪席卷的岩石海岸线上茁壮成长。我们研究了pH和温度单独和联合对两种关节珊瑚藻类的生长、钙化和生物力学特性的影响，这两种藻类是在东北太平洋受海浪照射的海岸上常见的两种珊瑚藻类--珊瑚和结节珊瑚。升高的温度和降低的pH降低了两个物种的生长速度(降低30−，降低89%)，但对种间碳酸钙的含量和膝关节的生物力学性能几乎没有影响。结果表明，尽管生长速度可能会下降，但这两个珊瑚物种将保持其组织的完整性，并在未来的气候压力下继续存在。
: Ocean warming and acidification are predicted to impact the physiology of marine organisms, especially marine calcifiers that must deposit calcium carbonate and resist dissolution. Of particular concern are articulated coralline algae, which must maintain both calcified segments (intergenicula) and uncalcified joints (genicula) in order to thrive along wave-swept rocky coast-lines. We examined the effect of pH and temperature, both individually and in combination, on the growth, calcification, and biomechanical properties of 2 species of articulated coralline algae, Corallina vancouveriensis and Calliarthron tuberculosum , common on wave-exposed shores in the NE Pacific. Increased temperature and reduced pH were found to reduce growth rates in both species (30−89% lower) but had little influence on the amount of intergenicular calcium carbonate or on the genicular biomechanical properties of these species. Results suggest that although growth rates may decline, these 2 coralline species will maintain the integrity of their tissues and continue to persist under future climate stress.