scholarly journals Green-tree retention and controlled burning in restoration and conservation of beetle diversity in boreal forests

2006 ◽  
Vol 2006 (21) ◽  
Author(s):  
Esko Hyvärinen
Keyword(s):  
Boreal Forests ◽  
Controlled Burning ◽  
Tree Retention ◽  
Green Tree Retention

scholarly journals Boreal Owl (Aegolius funereus) and Northern Saw-whet Owl (Aegolius acadicus) breeding records in managed boreal forests

2020 ◽  
Vol 134 (2) ◽  
pp. 125-131
Author(s):  
Zoltan Domahidi ◽  
Scott E. Nielsen ◽  
Erin M. Bayne ◽  
John R. Spence
Keyword(s):  
Boreal Forests ◽  
Egg Production ◽  
Forest Types ◽  
Breeding Parameters ◽  
Aegolius Funereus ◽  
Nest Boxes ◽  
Tree Retention ◽  
Green Tree Retention ◽  
Aegolius Acadicus ◽  
Boreal Owl

During the 2016 breeding season we monitored 169 nest boxes suitable for Boreal Owl (Aegolius funereus) and Northern Saw-whet Owl (Aegolius acadicus) in high-latitude (>55°N) boreal forests of northwestern Alberta affected by partial logging. Despite the large number of boxes deployed, the number of boxes used by Boreal and Northern Saw-whet Owls was small. Boreal Owls used nest boxes (n = 4) in conifer-dominated stands with three being in uncut blocks and the other in a 50% green tree retention cut-block. In contrast, Northern Saw-whet Owls used boxes (n = 4) in a broader range of cover types, breeding in boxes placed in stands with at least 20% post-harvest tree retention. Although both species successfully bred in the same landscape, Boreal Owls produced fewer eggs (mean = 2.5) and raised fewer young (mean = 0.5) than Northern Saw-whet Owls (5 and 2.25, respectively). Furthermore, our observed Boreal Owl egg production was lower than has been found for the same species nesting in nest boxes in different regions or forest types. In contrast, breeding parameters of Northern Saw-whet Owls were similar to that found in nest boxes in the eastern boreal region of Canada and in the southern part of its range.

Green Tree Retention in Fennoscandian Forestry

2001 ◽  
Vol 16 (sup003) ◽  
pp. 79-90 ◽  
Author(s):  
Ilkka Vanha-Majamaa ◽  
Jyrki Jalonen
Keyword(s):  
Tree Retention ◽  
Green Tree Retention

Response of terrestrial small mammals to varying amounts and patterns of green-tree retention in Pacific Northwest forests

2007 ◽  
Vol 251 (3) ◽  
pp. 142-155 ◽  
Author(s):  
Robert A. Gitzen ◽  
Stephen D. West ◽  
Chris C. Maguire ◽  
Tom Manning ◽  
Charles B. Halpern
Keyword(s):  
Pacific Northwest ◽  
Small Mammals ◽  
Tree Retention ◽  
Green Tree Retention

Orchid abundance in hemiboreal forests: stand-scale effects of clear-cutting, green-tree retention, and artificial drainage

2011 ◽  
Vol 41 (6) ◽  
pp. 1352-1358 ◽  
Author(s):  
Asko Lõhmus ◽  
Tiiu Kull
Keyword(s):  
Scale Effects ◽  
Current Knowledge ◽  
Timber Harvesting ◽  
Clear Cutting ◽  
Artificial Drainage ◽  
Tree Retention ◽  
Green Tree Retention ◽  
Retention Trees ◽  
The Impact ◽  
Site Types

The current knowledge on the impact of forest management on plant species of conservation concern is poor. We asked how three basic silvicultural techniques (clear-cutting, green-tree retention, and artificial drainage) affect the abundance of terrestrial orchid species and their communities in Estonia, hemiboreal Europe. Fixed-area, fixed-effort surveys (4 h per 2 ha plot) were used in 29 plot clusters representing five site types, with each cluster including plots of four treatments (old growth, mature managed forest, and cutover with and without live retention trees). Altogether 11 species of orchids were recorded in those 116 plots, with the most complete sets of species in artificially drained plots and mature stands. Five species were widely distributed among treatments and site types, but most site types also hosted shade-tolerant orchids (six species) that characteristically disappeared after timber harvesting. Cutover areas (3–7 years after harvest) hosted no species absent from uncut forest stands, and retention of solitary trees had no effect on orchid abundance over clear-cuts. Modern Estonian forest landscapes appear to support viable populations of many orchids, with rotation ages sufficient for population development of the majority of shade-tolerant species.

scholarly journals Green-tree retention and life after the beetle: stand structure and small mammals 30 years after salvage harvesting

Silva Fennica ◽  
2010 ◽  
Vol 44 (5) ◽  
Author(s):  
Thomas Sullivan ◽  
Druscilla Sullivan ◽  
Pontus Lindgren ◽  
Douglas Ransome
Keyword(s):  
Small Mammals ◽  
Stand Structure ◽  
Tree Retention ◽  
Green Tree Retention ◽  
Salvage Harvesting
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