Observations of small‐scale spatial patterns in phytoplankton populations1
Observations of small‐scale spatial patterns in phytoplankton populations1
复制标题
浮游植物种群小尺度空间格局的观测1
DOI：
--
复制
发表时间：
1977
期刊：
影响因子：
--
通讯作者：
R. E. Smith
中科院分区：
文献类型：
--
作者：
G. Harris;R. E. Smith
利用水平断面和垂直断面研究了浅水富营养化沼泽浮游植物的时空分布。生物和化学数据显示，从厘米到米的尺度上都有斑块。许多参数表现出均方和方差之间的相关性，并表现出偏态分布。风速与水平平均叶绿素含量和垂直方向上的叶绿素变异系数呈正相关。浮游植物种群主要由单一种的环藻组成。多样性指数计算表明，在环藻丰度较高时，群落多样性略有下降。样本是在两个不同的水团之间的混合区采集的，其中一个比另一个更富营养化，这一事实解释了这种斑块。
The temporal and spatial distribution of phytoplankton in a shallow eutrophic marsh was studied by means of horizontal and vertical transects. Biological and chemical data showed patchiness on scales from centimeters to meters. Many of the parameters showed correlations between mean square and variance and displayed skewed distributions. Wind speed was correlated with mean horizontal chlorophyll content and the coefficient of variation of chlorophyll in the vertical dimension. Phytoplankton populations were dominated by a single species of Cyclotella. Diversity index calculations showed a small reduction of community diversity at high Cyclotella abundances. The patchiness is explained by the fact that the samples were taken in a mixing zone beween two distinct water masses, one more eutrophic than the other.