Table 2 in Factors affecting site selection by beavers colonizing streams in the upper Midwest region of the United States

Table 2. Parameter estimates (coefficient) and related statistics for the best American beaver (Castor canadensis) habitat selection logistic regression model using geomorphology variables. Categorical variables were parameterized as (0, 1); therefore, the value of the category not listed in the table is embedded in the intercept. SE = standard error.
VariableCoefficientSEP90% Confidence intervalIntercept−0.5310.1950.006−0.851−0.211Drainage class: poor0.3470.094<0.0010.1930.501Stream gradient−0.2160.080.007−0.347−0.085Water source: surface0.6060.158<0.0010.3470.865Valley relief−0.0970.0490.048−0.177−0.017Stream width: narrow0.2290.1010.0240.0630.395Stream width: wide−1.2020.5050.017−2.03−0.374Stream alkalinity: acid−0.3840.3570.283−0.9690.201Stream alkalinity: neutral0.8460.244<0.0010.4461.246Stream temperature: cold−0.6540.166<0.001−0.926−0.382Stream temperature: cool0.0120.1610.941−0.2520.276Notes:
Published as part of Rugg, David J., Ribic, Christine A., Donner, Deahn M., Beck, Albert J., Wolcott, Daniel M., Reinecke, Sue & Eklund, Dan, 2023, Factors affecting site selection by beavers colonizing streams in the upper Midwest region of the United States, pp. 735 in Canadian Journal of Zoology 101 (9) on page 735, DOI: 10.1139/cjz-2022-0186, http://zenodo.org/record/15677674

表2 基于地貌变量构建的美洲河狸（Castor canadensis）生境选择逻辑回归（logistic regression）最优模型的参数估计值（系数）及相关统计量。分类变量采用(0,1)编码进行参数化，因此表格未列出的类别取值嵌入于模型截距项中。SE即标准误（standard error）。

| 变量 | 系数 | 标准误 | P值 | 90%置信区间 |
|------|------|--------|-----|-------------|
| 截距 | -0.531 | 0.195 | 0.006 | [-0.851, -0.211] |
| 排水等级：差 | 0.347 | 0.094 | <0.001 | [0.193, 0.501] |
| 河流坡度 | -0.216 | 0.080 | 0.007 | [-0.347, -0.085] |
| 水源：地表 | 0.606 | 0.158 | <0.001 | [0.347, 0.865] |
| 河谷起伏度 | -0.097 | 0.049 | 0.048 | [-0.177, -0.017] |
| 河宽：窄 | 0.229 | 0.101 | 0.024 | [0.063, 0.395] |
| 河宽：宽 | -1.202 | 0.505 | 0.017 | [-2.03, -0.374] |
| 溪流碱度：酸性 | -0.384 | 0.357 | 0.283 | [-0.969, 0.201] |
| 溪流碱度：中性 | 0.846 | 0.244 | <0.001 | [0.446, 1.246] |
| 溪流温度：低温 | -0.654 | 0.166 | <0.001 | [-0.926, -0.382] |
| 溪流温度：凉 | 0.012 | 0.161 | 0.941 | [-0.252, 0.276] |

注：本内容发表于Rugg, David J.、Ribic, Christine A.、Donner, Deahn M.、Beck, Albert J.、Wolcott, Daniel M.、Reinecke, Sue与Eklund, Dan于2023年发表的研究论文《美国中西部上游地区溪流定植河狸的选址影响因素》，刊载于《加拿大动物学杂志》第101卷第9期第735页，DOI: 10.1139/cjz-2022-0186，数据集存档于http://zenodo.org/record/15677674。