Generalizability of songbird habitat models in boreal mixedwood forests of Alberta

2008 ◽  
Vol 211 (1-2) ◽  
pp. 191-201 ◽  
Author(s):  
Pierre R. Vernier ◽  
Fiona K.A. Schmiegelow ◽  
Susan Hannon ◽  
Steve G. Cumming
Keyword(s):  
Habitat Models ◽  
Mixedwood Forests

Stand-Level Forest Structure and Avian Habitat: Scale Dependencies in Predicting Occurrence in a Heterogeneous Forest

2008 ◽  
Vol 54 (1) ◽  
pp. 36-46
Author(s):  
Katherine Manaras Smith ◽  
William S. Keeton ◽  
Therese M. Donovan ◽  
Brian Mitchell
Keyword(s):  
Forest Structure ◽  
Stand Structure ◽  
Site Occupancy ◽  
Territory Size ◽  
Weight Of Evidence ◽  
Habitat Models ◽  
Point Counts ◽  
Forest Stand Structure ◽  
Habitat Scale

Abstract We explored the role of stand-level forest structure and spatial extent of forest sampling in models of avian occurrence in northern hardwood-conifer forests for two species: black-throated blue warbler (Dendroica caerulescens) and ovenbird (Seiurus aurocapillus). We estimated site occupancy from point counts at 20 sites and characterized the forest structure at these sites at three spatial extents (0.2, 3.0, and 12.0 ha). Weight of evidence was greatest for habitat models using forest stand structure at the 12.0-ha extent and diminished only slightly at the 3.0-ha extent, a scale that was slightly larger than the average territory size of both species. Habitat models characterized at the 0.2-ha extent had low support, yet are the closest in design to those used in many of the habitat studies we reviewed. These results suggest that the role of stand-level vegetation may have been underestimated in the past, which will be of interest to land managers who use habitat models to assess the suitability of habitat for species of concern.

Effects of non-representative sampling design on multi-scale habitat models: flammulated owls in the Rocky Mountains.

2021 ◽  
Vol 450 ◽  
pp. 109566
Author(s):  
Luca Chiaverini ◽  
Ho Yi Wan ◽  
Beth Hahn ◽  
Amy Cilimburg ◽  
Tzeidle N. Wasserman ◽  
...  
Keyword(s):  
Rocky Mountains ◽  
Sampling Design ◽  
Habitat Models ◽  
Representative Sampling ◽  
Multi Scale

Boreal mixedwood forests may have no "representative" areas: some implications for reserve design

Ecography ◽  
1996 ◽  
Vol 19 (2) ◽  
pp. 162-180 ◽  
Author(s):  
S. G. Cumming ◽  
P. J. Burton ◽  
B. Klinkenberg
Keyword(s):  
Reserve Design ◽  
Mixedwood Forests

Variation in post-wildfire regeneration of boreal mixedwood forests: underlying factors and implications for natural disturbance-based management

New Forests ◽  
2014 ◽  
Vol 45 (2) ◽  
pp. 215-234 ◽  
Author(s):  
Stefanie M. Gärtner ◽  
Mike Bokalo ◽  
S. Ellen Macdonald ◽  
Ken Stadt
Keyword(s):  
Natural Disturbance ◽  
Mixedwood Forests

Understanding compositional stability in mixedwood forests of eastern North America

2021 ◽  
Author(s):  
Christel C. Kern ◽  
Justin D. Waskiewicz ◽  
Lee E. Frelich ◽  
Bethany Lauren Muñoz Delgado ◽  
Laura S. Kenefic ◽  
...  
Keyword(s):  
North America ◽  
Neighborhood Effects ◽  
Vertical Direction ◽  
Current Theory ◽  
Forest Composition ◽  
Eastern North America ◽  
Moderate Severity ◽  
Mixedwood Forests ◽  
Compositional Stability ◽  
Softwood Species

Mixedwood forest composition, or co-dominance of hardwood and softwood species, has been interpreted as both stable and unstable. Through review of existing theory, we propose a conceptual model to understand mixedwood compositional stability in boreal and temperate forests of eastern North America. We first review the current theory that the strength of neighborhood effects (i.e. species ability to self-replace under their own canopy) is essential to understanding stability, such that when self-replacement is strong for both dominant hardwood and softwood species, composition is stable except at extreme disturbance severities. In contrast, when mixedwood forests are dominated by negligible or weak affinities to self-replace, composition is unstable and sensitive to changes in disturbance. Our new concept further posits that both change in the disturbance severity and in its vertical direction are essential to understanding stability. For example, where moderate-severity surface fires (which impact forests from below) cease and are replaced by moderate-severity blowdowns (which impact forests from above), instability can occur even when disturbance severity is unchanged. We therefore pose and discuss an extension to current theory to provide a new unifying concept of stability for mixedwood forests and, more broadly, for mixed-species forests.

scholarly journals Habitat models of wood-inhabiting fungi along a decay gradient of Norway spruce logs

2015 ◽  
Vol 18 ◽  
pp. 48-55 ◽  
Author(s):  
Tiina Rajala ◽  
Tero Tuomivirta ◽  
Taina Pennanen ◽  
Raisa Mäkipää
Keyword(s):  
Norway Spruce ◽  
Habitat Models
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