Carbon to volume relationships for dinoflagellates, diatoms, and other protist plankton
Carbon to volume relationships for dinoflagellates, diatoms, and other protist plankton
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DOI：
10.4319/lo.2000.45.3.0569
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发表时间：
2000-05-01
影响因子：
4.5
通讯作者：
Lessard, EJ
中科院分区：
文献类型：
--
作者：
Menden-Deuer, S;Lessard, EJ
测量营养和形态多样化的甲藻物种的细胞碳和氮含量以及细胞体积，以确定碳与体积（C：vol）和氮与体积（N：vol）的关系。对于体积范围为 180 至 2.8 X 10(5) mu m(3) 的细胞，细胞 C 和 N 含量范围为 48 至 3.0 X 10(4) pgC cell(-1) 和 11 至 2,656 pgN cell(-1)，甲藻中的 C 和 N 密度随着细胞体积的增加而显着降低。 C:N 比率范围为 3.44 至 6.45。甲藻中的 C:vol 和 N:vol 显着相关，如方程 pgC cell(-1) = 0.760 X 体积(0.819) 和 pgN cell(-1) = 0.118 X 体积(0.849) 所示。结合先前发表的数据来比较不同系统发育原生生物群体（包括叶绿植物、金藻植物、绿藻植物和裸藻植物）中的 C:vol 关系。我们的分析表明纤毛虫可用的 C:vol 关系之间存在差异。建立了硅藻的新 C:vol 关系（pgC cell(-1) = 0.288 x 体积(0.811)）。甲藻的碳密度明显高于硅藻。除硅藻外，我们发现不同系统发育类群的 C:vol 关系之间几乎没有显着差异。因此，确定了分类学上多样化的原生浮游生物（不包括硅藻）的一种 C：体积关系（pgC 细胞（-1）= 0.216 x 体积（0.939））。在组合数据集中，碳密度不是恒定的，而是随着细胞体积的增加而显着降低。对大尺寸范围内的浮游生物使用恒定的 C:vol 转换因子将导致生物量估计中的系统误差。
Cellular carbon and nitrogen content and cell volume of nutritionally and morphologically diverse dinoflagellate species were measured to determine carbon to volume (C:vol) and nitrogen to volume (N:vol) relationships. Cellular C and N content ranged from 48 to 3.0 X 10(4) pgC cell(-1) and 11 to 2,656 pgN cell(-1) for cells ranging in volume from 180 to 2.8 X 10(5) mu m(3) C and N density in dinoflagellates decreased significantly with increasing cell volume. C:N ratios ranged from 3.44 to 6.45. C:vol and N:vol in dinoflagellates are significantly related as expressed by the equations pgC cell(-1) = 0.760 X volume(0.819) and pgN cell(-1) = 0.118 X volume(0.849). Previously published data were combined to compare C:vol relationships in different phylogenetic protist groups, including chlorophytes, chrysophytes, prasinophytes, and prymnesiophytes. Our analysis indicated differences between the C:vol relationships available for ciliates. A new C:vol relationship for diatoms was established (pgC cell(-1) = 0.288 x volume(0.811)). Dinoflagellates are significantly more C dense than diatoms. Except for diatoms, we found few significant differences between C:vol relationships of different phylogenetic groups. Consequently, one C:vol relationship for taxonomically diverse protist plankton excluding diatoms was determined (pgC cell(-1) = 0.216 x volume(0.939)). In the combined data set, carbon density was not constant but decreased significantly with increasing cell volume. Using constant C:vol conversion factors for plankton over large size ranges will cause systematic errors in biomass estimates.