Movements and habitat asociations of northern flying squirrels in the Central Oregon Cascades Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/w6634804s

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • We used radio-telemetry techniques to estimate home range size, movements, den sites, and habitat selection of 39 northern flying squirrels (Glaucomys sabrinus) in 2 old- and 2 second-growth stands in the central Oregon Cascades. Sampling periods were at night during summer and fall of 1991-92. Home ranges were smaller for female squirrels (3.9 ha, SE = 0.37) than male squirrels (5.9 ha, SE = 0.75); there was no detectable difference in home range size between stand types. Movements between successive, noncorrelated telemetry locations averaged 71 m (SE = 1.6 m; n = 1090) with no detectable differences between stand types or sexes. Northern flying squirrels had similar home range sizes, and movements in old- and second-growth coniferous forests of the central Oregon Cascades. Northern flying squirrel core-use areas (75% of the utilization area) were used to assess habitat selection in both old- and second-growth stands. Logistic regression procedures resulted in 1 significant microhabitat variable from the 22 variables measured in each stand type. In the old-growth stands, squirrels avoided areas with high proportions of large (.. 50 cm diameter) down wood (i = 0.0002). In the second-growth stands squirrels avoided areas with high densities of small (10 - 49 cm dbh) snags ( = 0.003). In the summer of 1992 we used daytime telemetry techniques to locate 42 den sites in an old-growth stand and 64 den sites in a second-growth stand. Den trees were larger than the average available den tree in each stand type. Den trees averaged 36.0 cm dbh (SE = 1.6 cm) in the second-growth stand and 101.0 cm (SE = 6.1 cm) in the old-growth stand. Squirrels did not seem to select snags for den sites more frequently than expected in either stand type, as other studies have suggested.
Resource Type
Date Available
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Non-Academic Affiliation
Subject
Rights Statement
Language
Digitization Specifications
  • Master files scanned at 600 ppi (256 Grayscale) using Capture Perfect 3.0 on a Canon DR-9080C in TIF format. PDF derivative scanned at 300 ppi (256 B&W), using Capture Perfect 3.0, on a Canon DR-9080C. CVista PdfCompressor 3.1 was used for pdf compression and textual OCR.
Replaces
Additional Information
  • description.provenance : Submitted by Anna Opoien (aoscanner@gmail.com) on 2008-08-19T19:46:17Z No. of bitstreams: 1 Martin_Karl_J_1994.pdf: 423229 bytes, checksum: 3d98c0b15d419ba6eeaf7e01bf980639 (MD5)
  • description.provenance : Submitted by Anna Opoien (aoscanner@gmail.com) on 2008-08-19T19:38:30Z No. of bitstreams: 1 Martin_Karl_J_1994.pdf: 1850266 bytes, checksum: 149808feb6622e11eed659ef836615f2 (MD5)
  • description.provenance : Made available in DSpace on 2008-08-19T21:34:17Z (GMT). No. of bitstreams: 1 Martin_Karl_J_1994.pdf: 423229 bytes, checksum: 3d98c0b15d419ba6eeaf7e01bf980639 (MD5)
  • description.provenance : Approved for entry into archive by Linda Kathman(linda.kathman@oregonstate.edu) on 2008-08-19T21:34:16Z (GMT) No. of bitstreams: 1 Martin_Karl_J_1994.pdf: 423229 bytes, checksum: 3d98c0b15d419ba6eeaf7e01bf980639 (MD5)
  • description.provenance : Rejected by Linda Kathman(linda.kathman@oregonstate.edu), reason: on 2008-08-19T19:45:02Z (GMT)
  • description.provenance : Approved for entry into archive by Linda Kathman(linda.kathman@oregonstate.edu) on 2008-08-19T21:32:24Z (GMT) No. of bitstreams: 1 Martin_Karl_J_1994.pdf: 423229 bytes, checksum: 3d98c0b15d419ba6eeaf7e01bf980639 (MD5)

Relationships

In Administrative Set:
Last modified: 10/24/2017

Downloadable Content

Download PDF
Citations:

EndNote | Zotero | Mendeley

Items