Stable carbon isotope ratio variations in marine macrophytes along intertidal gradients
Stable carbon isotope ratio variations in marine macrophytes along intertidal gradients
复制标题
海洋大型植物沿潮间带梯度的稳定碳同位素比变化
DOI：
10.1007/bf00379192
复制
发表时间：
1988
期刊：
影响因子：
2.7
通讯作者：
C. Mcroy
中科院分区：
文献类型：
--
作者：
L. Cooper;C. Mcroy
相对水运动和边界层扩散过程影响水生植物的碳同位素比值的假设进行了测试在潮池和浪涌区比较的冲浪草Phyllospadixspp。没有证据表明，沉水植物生长在仍然上游潮池的同位素不同，淹没在较低的潮涌区。在潮间带生长的植物13 C/12 C比值的显著降低可能是由于吸收了大气中的二氧化碳。海藻（Egregia menziesiiandHalosaccion americanum）生长在相同的位置和潮汐高度的海草显示出不同的同位素分馏模式，这表明在海草的同位素变异的原因不一定是相同的，在这两种海藻。
The hypothesis that relative water motion and boundary layer diffusion processes affect carbon isotope ratios of aquatic plants was tested in tidal pool and surge zone comparisons of the surfgrassPhyllospadixspp. No evidence was found that submerged plants growing in still upper tidal pools were isotopically different from those growing submerged in lower tidal surge zones. Significant decreases in13C/12C ratios for plants growing emersed in the intertidal may have been caused by uptake of atmospheric carbon dioxide. Marine algae (Egregia menziesiiandHalosaccion americanum) growing at the same location and tidal elevations as the seagrasses showed somewhat different isotopic fractionation patterns, suggesting that causes of isotopic variability in the seagrasses were not necessarily the same as those in the two marine algae.