Northern Spotted Owl Nest Tree Summary...Summary This report summarizes field data from 2,508 nest...

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Northwest Forest Plan Interagency Regional Monitoring Program Northern Spotted Owl Nest Tree Summary Ray Davis, Steve Ackers, Steven Andrews, Peter Carlson, Rob Horn, Janice Reid, Chris McCafferty, Stan Sovern, Jim Swingle

Transcript of Northern Spotted Owl Nest Tree Summary...Summary This report summarizes field data from 2,508 nest...

Page 1: Northern Spotted Owl Nest Tree Summary...Summary This report summarizes field data from 2,508 nest trees collected on eight federal demographic study areas across the northern spotted

Northwest Forest Plan Interagency Regional Monitoring Program

Northern Spotted Owl Nest Tree Summary

Ray Davis, Steve Ackers, Steven Andrews, Peter Carlson, Rob Horn, Janice Reid, Chris McCafferty, Stan Sovern, Jim Swingle

Page 2: Northern Spotted Owl Nest Tree Summary...Summary This report summarizes field data from 2,508 nest trees collected on eight federal demographic study areas across the northern spotted
Page 3: Northern Spotted Owl Nest Tree Summary...Summary This report summarizes field data from 2,508 nest trees collected on eight federal demographic study areas across the northern spotted

Summary

This report summarizes field data from 2,508

nest trees collected on eight federal

demographic study areas across the northern

spotted owl’s range (Fig. 1). The majority (88%)

of nests were found in live trees. Most nests

(99%) were in conifer, Douglas-fir being the

most widely used species (89%). Other conifer

species used varied by study area; western

redcedar and western hemlock accounted for

about 7 percent and occurred in moister forests.

Grand-fir/white fir accounted for and hardwoods

accounted for about 1 percent of nest trees, also

varying by study area (Fig. 2).

Nests mostly occurred in broken tops (58%) with

platforms and side cavities accounting for 22

percent and 20 percent of all nests, respectively.

The following pages summarize nest tree data

from each study area. Where possible, live and

dead nest trees were summarized by decay stage

(citation).

Page 4: Northern Spotted Owl Nest Tree Summary...Summary This report summarizes field data from 2,508 nest trees collected on eight federal demographic study areas across the northern spotted

Olympic Peninsula - West (n = 107)

Page 5: Northern Spotted Owl Nest Tree Summary...Summary This report summarizes field data from 2,508 nest trees collected on eight federal demographic study areas across the northern spotted

Olympic Peninsula - East (n = 59)

Page 6: Northern Spotted Owl Nest Tree Summary...Summary This report summarizes field data from 2,508 nest trees collected on eight federal demographic study areas across the northern spotted

Oregon Coast Ranges (n = 438)

Page 7: Northern Spotted Owl Nest Tree Summary...Summary This report summarizes field data from 2,508 nest trees collected on eight federal demographic study areas across the northern spotted

HJ Andrews (n = 325)

Page 8: Northern Spotted Owl Nest Tree Summary...Summary This report summarizes field data from 2,508 nest trees collected on eight federal demographic study areas across the northern spotted

Tyee (n = 565)

Page 9: Northern Spotted Owl Nest Tree Summary...Summary This report summarizes field data from 2,508 nest trees collected on eight federal demographic study areas across the northern spotted

South Cascades (n = 278)

Page 10: Northern Spotted Owl Nest Tree Summary...Summary This report summarizes field data from 2,508 nest trees collected on eight federal demographic study areas across the northern spotted

Klamath (n = 366)

Page 11: Northern Spotted Owl Nest Tree Summary...Summary This report summarizes field data from 2,508 nest trees collected on eight federal demographic study areas across the northern spotted

Cle Elum (n = 182)

Page 12: Northern Spotted Owl Nest Tree Summary...Summary This report summarizes field data from 2,508 nest trees collected on eight federal demographic study areas across the northern spotted

Northwest California (n = 188)

Page 13: Northern Spotted Owl Nest Tree Summary...Summary This report summarizes field data from 2,508 nest trees collected on eight federal demographic study areas across the northern spotted

Crow’s Nest Natural Area Preserve...Brooke or Raven Road locations. Mike Lott, Northern Region Steward (540) 658-8960 Geoff Austin, Northern Operations Steward - Law Enforcement

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Spotted Owl Controversy- Ethics VS Economics · ! 3! northern!flying!squirrels,!red!tree!voles!and!woodrats;which!can!only!be!found!in!old! growth!forests.!!! Like!mostowls,!spotted!owls!are!nocturnal!and!are

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RECOVERY STRATEGY FOR THE NORTHERN SPOTTED OWL · 2006. 10. 31. · RECOVERY STRATEGY FOR THE NORTHERN SPOTTED OWL (Strix occidentalis caurina) IN BRITISH COLUMBIA Under the Accord

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