确定性过程主导高原典型河流浮游植物地理分布格局和群落构建

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杨胜娴¹^,²^,³, 杨清¹^,²^,³, 李晓东¹^,²^,³, 巢欣¹^,²^,³, 刘惠秋¹^,²^,³, 魏蓝若雪¹^,²^,³, 巴桑¹^,²^,³^,^*(

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Deterministic processes dominate the geographic distribution pattern and community assembly of phytoplankton in typical plateau rivers

Shengxian Yang¹^,²^,³, Qing Yang¹^,²^,³, Xiaodong Li¹^,²^,³, Xin Chao¹^,²^,³, Huiqiu Liu¹^,²^,³, Lanruoxue Wei¹^,²^,³, Sang Ba¹^,²^,³^,^*(

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图7. 雅鲁藏布江中上游浮游植物群落中性模型(a-f)和校正随机率(MST) (g-i)。频率高于模型预测值的物种显示为黄色; 频率较低的物种显示为红色; 预测范围内的物种显示为绿色; 蓝色虚线表示模型预测的95%置信区间。R²为中性群落模型的整体拟合优度, Nm是元群落规模(N)与迁移率(m)的乘积, 量化了对群落之间扩散的估计。a-c分别为春季、夏季、秋季浮游植物群落; d-f分别为YJA、YJB、YJC浮游植物群落; (g) 3个季节浮游植物群落MST; (h) 3个海拔梯度浮游植物群落MST; (i)校正随机率在不同季节和海拔梯度上的变化。S: 春季; SU: 夏季; A: 秋季。YJA、YJB、YJC见图1。

Fig. 7. Neutral model of phytoplankton community (a-f) and modified stochasticity ratio (MST) (g-j). Species whose frequency is higher than predicted by the model are shown in yellow; Less frequent species are shown in red; Species within the predicted range are shown in green; The blue dashed line represents the 95% confidence interval for the model's prediction. R2 is the overall goodness of fit of the neutral community model, and Nm is the product of meta-community size (N) and mobility (m), quantifying the estimate of diffusion between community assembly. a-c, Spring, summer, and autumn phytoplankton communities, respectively; d-f, YJA, YJB, YJC phytoplankton communities, respectively; (g) Three seasonal phytoplankton communities MST; (h) Three altitudinal gradient phytoplankton communities MST; (i) Modified stochasticity ratio in different seasons and altitude gradients. S, Spring; SU, Summer; A, Autumn. YJA, YJB, YJC see Fig. 1.