Show simple item record

dc.contributor.authorJacobs, Jefferson M.
dc.date.accessioned2015-12-01T01:27:47Z
dc.date.available2015-12-01T01:27:47Z
dc.date.issued2003-05
dc.identifier.urihttp://hdl.handle.net/11122/6231
dc.descriptionThesis (M.S.) University of Alaska Fairbanks, 2003en_US
dc.description.abstractI conducted the first comprehensive occupancy and productivity surveys of Falcon peregrinus on the Fortymile River during 2000 and 2001. I tested feather samples of nine nestlings for mercury contamination, examined effects of human disturbance, and assessed correlations of nest productivity to aspect and distance from ponds. Twenty and 22 nests were occupied in 2000 and 2001 and productivity averaged 0.88 and 1.33 nestlings per nest respectively. Mean feather mercury concentration was 3.85 ppm, and ranged from 1.88 ppm to 7.13 ppm. High variability in timing and intensity of disturbances and limited sample sizes precluded a study of disturbance effects. Peregrines selected nest-cliffs with southern aspects in 2001. North aspect nests were most vulnerable to failure in 2000. Nests within 6 km of a pond had higher productivity than those farther from ponds. The Bureau of Land Management is encouraged to continue annual occupancy and productivity surveys of the population.en_US
dc.language.isoen_USen_US
dc.titleFactors influencing the productivity of peregrine falcons (Falco peregrinus anatum) in the Fortymile wild and scenic river corridor, Alaskaen_US
dc.typeThesisen_US
refterms.dateFOA2020-03-05T12:15:58Z


Files in this item

Thumbnail
Name:
Jacobs_J_2003.pdf
Size:
79.98Mb
Format:
PDF

This item appears in the following Collection(s)

Show simple item record