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Thresholds In Songbirds In Relation To Early Seral Forest At Stand And Landscape Scales
1. Matt Betts, Tana Ellis Forest Ecosystems and Society, OSU Collaborators: Joan Hagar, Brenda McComb, Kevin McGarigal, Jim Rivers Thresholds in songbirds in relation to early seral forest at stand and landscape scales
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3. Area decrease = ~40% Mean patch size decrease = ~35% Kennedy and Spies 2005 Biol. Cons. (1939)
13. Habitat variable ‘x’(Stand or landscape scale) Betts and Villard 2009 – Cons. Targets. Betts et al. 2007 – Cons. Biol. Population size/ occurrence/ density
31. Tana Ellis and Matt Betts Oregon State University Forest Ecosystems & Society
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39. Full model R 2 = 0.45 Foliage gleaners= 12.8% (SE=3.5) Model Wi AIC Δ AIC THRESHOLD SE Segmented 0.98 2.19 0.00 6.456 1.709 Linear 0.02 10.18 8.00 - - Hardwood threshold at 6.7 % (SE=1.6)
Early seral (Whimbery et al.) included high AND moderate severity disturbance
Previous proposal tests effects of intensive forest management at stand level. However, it is well known that many species respond to forest structure at larger (landscape) scales. Scales larger than the home range.
Hardwood. 60% prediction success at pixel scale. 96% within one class.
Used an exploratory approach where we looked
Previous proposal tests effects of intensive forest management at stand level. However, it is well known that many species respond to forest structure at larger (landscape) scales. Scales larger than the home range.