菌根共生网络嵌套性判定的零模型选择

林力涛,马克明

Selection of null models in nestedness pattern detection of highly asymmetric mycorrhizal networks

LIN Li-Tao,MA Ke-Ming

表1 嵌套性度量指标特征

Table 1 Characteristics of various nestedness metrics

指标 Index 反映特征 Underlying feature 下限保守 Bottom boundary conservative 上限保守 Top boundary conservative 零模型保守 Null model conservative 存在上限 Top limit 矩阵温度 matrix temperature (NT) 矩阵中异常点数量、位置 Relative abundance and position of unexpected absences or presences in a matrix 是 Yes 是 Yes 否 No 是 Yes 配对重叠度 nestedness metric based on overlap and decreasing fill (NODF) 矩阵配对重叠中非子集行列的数量及位置 Percentage and position of columns (rows) overlaps with other columns (rows) 是 Yes 是 Yes 是 Yes 是 Yes 嵌套性偏移 Nestedness deviation 网络与零模型的距离 Distance deviates from null models 是 Yes 否 No 是 Yes 是 Yes 标准化指数 Standardized effect size 网络达到显著水平的难易程度 Significance of a network deviates from null models 是 Yes 否 No 是 Yes 否 No