镇海棘螈产卵场微生境选择

李婷婷, 朱锡红, 吴光年, 宋虓, 徐爱春

Spawning ground microhabitat selection by the Chinhai spiny newt (Echinotriton chinhaiensis)

Tingting Li, Xihong Zhu, Guangnian Wu, Xiao Song, Aichun Xu

表1 镇海棘螈繁殖期间对产卵场微环境的选择和偏好

Table 1 Selection and preference of spawning sites of Echinotriton chinhaiensis during the breeding period

环境变量 Environmental variables 类别 Type 选择样方数 Utilized plot number (o) 期望值 Expected value (e) 生境喜好系数 Habitat preference index (HPI) 位点方向 Aspect 正向 Positive 103 52.5 0.9 (F) 反向 Reverse 2 52.5 ± 0.9 (E) 基质 Matrix 砾石 Gravel 7 35.0 ± 0.6 (E) 砾石 + 土壤 Gravel + soil 26 35.0 0 (RS) 土壤 Soil 72 35.0 0.5 (F) 大型遮蔽物种类 Type of large shelter 倒木 Fallen trees 3 21 ± 0.8 (E) 乔木 Trees 47 21 0.4 (S) 石块 Stones 47 21 0.4 (S) 树根 Roots 4 21 ± 0.7 (E) 藤本 Vines 4 21 ± 0.7 (E)