Results of forward selection of environmental variables explaining patterns in woodpecker community structure in forest patches.

The analysis was performed using Monte Carlo tests with 499 permutations. Variables are ordered according to their stepwise inclusion into the model. Significant effects are emboldened. For explanations of variable codes: see Tables 1 and 2.* - Variables were not included in the stepwise procedure since they did not improve the fit of the model.

本分析采用置换次数为499次的蒙特卡洛（Monte Carlo）检验。变量按照其逐步纳入模型的顺序进行排序。具有统计学显著性的效应已以粗体标注。变量代码的说明详见表1与表2。* 因未提升模型拟合优度，此类变量未被纳入逐步回归流程。