| Titre : | Effects of point count protocol on bird abundance and variability estimates and power to detect population trends |
| Auteurs : | F. R. Thompson, Auteur ; D. E. Burhans, Auteur ; B. Root, Auteur |
| Type de document : | Article |
| Dans : | Journal of Field Ornithology (73(2) SPR 2002) |
| Article en page(s) : | 141-150 |
| Langues: | Anglais |
| Résumé : | We used a three-year point-count data set from Hoosier National Forest, Indiana, to evaluate alternative point-count sampling strategies for detecting songbird declines. Repeated-measures ANOVA indicated that mean abundance estimates increased with increasing count radius (P |



