Recovery Plan for the Northern Spotted Owl - DRAFT
Recovery Plan for the Northern Spotted Owl - DRAFT Recovery Plan for the Northern Spotted Owl - DRAFT
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Table of ContentsAbstract .............................................. 285Studies of Habitat Suitability .............................................. 285Types of information collected .............................................. 286Use of the information .............................................. 288Recent Literature .............................................. 290California .............................................. 291Oregon and Washington .............................................. 293Structural Features of Sites Used by Owls .............................................. 294Results .............................................. 294Discussion .............................................. 297Amount of Habitat in Home Ranges .............................................. 302Results .............................................. 302Discussion .............................................. 303Habitat Selection for Roosting and Foraging .............................................. 304Results .............................................. 305Discussion .............................................. 307Abundance of Owls in Different Habitats .............................................. 307Results .............................................. 308Discussion .............................................. 308Demographic Rates in Different Habitats .............................................. 309Results .............................................. 309Discussion .............................................. 310Recommendations for Future Research .............................................. 312Standardize habitat measurements .............................................. 312Prepare habitat maps for demographic study areas ............................ 312Give high priority to studying selected areas ...................................... 312Give high priority to studying selected habitats .................................. 313Study functions and ways of developing understory ........................... 313Literature Cited .............................................. 315283
- Page 248 and 249: Barrows, C. W. 1980. Feeding ecolog
- Page 250 and 251: Clark, R. J., D. G. Smith, and L. H
- Page 252 and 253: Franklin, A. B., J. A. Blakesley, a
- Page 254 and 255: Harestad, A. S., and F. L. Bunnell.
- Page 256 and 257: Lundquist, R. W. and J. M. Mariani.
- Page 258 and 259: O'Halloran, K. 1989. Spotted owl in
- Page 260 and 261: Solis, D. M. 1980. Habitat use by n
- Page 262 and 263: Young, K. D., A. B. Franklin, and J
- Page 264 and 265: 248
- Page 266 and 267: 250
- Page 268 and 269: Table A.1. General approaches for e
- Page 270 and 271: complete count of the territorial b
- Page 272 and 273: Table A.3. Powera for various desig
- Page 274 and 275: Table A.4. Illustration of a Markov
- Page 276 and 277: Obviously, these statements hold on
- Page 278 and 279: Table A.6. Reliability of trend est
- Page 280 and 281: Demographic AnalysisAs noted earlie
- Page 282 and 283: the estimate (using the simple equa
- Page 284 and 285: however, we know little about the b
- Page 286 and 287: Table A.8. Summary of information n
- Page 288 and 289: predict the power achieved by diffe
- Page 290 and 291: Other studiestached. If dispersing
- Page 292 and 293: impractical at present. We describe
- Page 294 and 295: Conclusionsthe year effect can be i
- Page 296 and 297: 280
- Page 300 and 301: 284
- Page 302 and 303: owls. Consequently, the issue of wh
- Page 304 and 305: Use of the informationAssessments a
- Page 306 and 307: Recent LiteratureWe might begin by
- Page 308 and 309: Kerms (1989) measured habitat struc
- Page 310 and 311: Hamer (pers. comm.) described 11 ne
- Page 312 and 313: Table B.3. Percent hardwoods in the
- Page 314 and 315: Table B.5. Comparison of habitats u
- Page 316 and 317: Table B.8. Tree density (number of
- Page 318 and 319: and numbers of trees, and percent o
- Page 320 and 321: Under this hypothesis, owl fitness
- Page 322 and 323: suitable habitat for that region (m
- Page 324 and 325: ResultsDiscussionspotted owl habita
- Page 326 and 327: __Discussiondata from 41 sites in t
- Page 328 and 329: Recommendations for Future Research
- Page 330 and 331: 314
- Page 332 and 333: Hamer, T. 1988. Home range size of
- Page 334 and 335: 318
- Page 336 and 337: 320
- Page 338 and 339: Parameter Estimatesfor Individual S
- Page 340 and 341: provided in Table C. 5. Study of th
- Page 342 and 343: Table C.6. Summary of statistics re
- Page 344 and 345: 3. ConclusionsThis source of bias i
- Page 346 and 347: 330
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