From the Field: Use of camera traps to measure predation risk in a puma‐mule deer system
作者： Lucina Hernández , John W. Laundré , Mahesh Gurung
DOI: 10.2193/0091-7648(2005)33[353:FTFUOC]2.0.CO;2
关键词: Juniperus osteosperma 、 Forest type 、 Juniper 、 Ecology 、 Animal science 、 Cercocarpus 、 Predation 、 Odocoileus 、 Biology
摘要: Previous work indicated that automated camera traps may be useful in estimating preda- tion risk among different microhabitats for mule deer (Odocoileus hemionus). We tested the prediction number of photographs taken by was inversely related to amount food left feeding boxes or giving up densi- ties (GUDs). positioned adjacent standard placed open and edge 3 forest types: Douglas-fir (Pseudotsuga men- ziesii), juniper (Juniperus osteosperma), mountain mahongany (Cercocarpus ledi- folius). compared with daily GUDs 2 microhabitats. found GUD data our study coincided previous lower versus (288.6±17.1 g vs. 389.6±19.4 g; P<0.001) (218.9±26.3 251.9±29.6 g, P=0.027) but not mahogany (272.4±29.5 287.0±32.3 P=0.414). also sig- nificantly more total photos/camera microhabitat (16.2±2.2 7.4±1.5; P=0.004). More were type (15.6 ±3.9 11.5 ±3.9), difference significant. There no between microhab- itats (18.4 ± 3.4 19.3 1.9). Total photos/ day/box significantly types (P = 0.002- 0.008). The variability explained regression equations (r adjusted) ranged from 22% 29% juniper. concluded pho- tographs does reflect results analysis could used assess predation
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