Individual-level analysis of damage to residual trees after single-tree selection harvesting in northern Japanese mixedwood stands

2014 ◽  
Vol 19 (4) ◽  
pp. 369-378 ◽  
Author(s):  
Shinichi Tatsumi ◽  
Toshiaki Owari ◽  
Hisatomi Kasahara ◽  
Yuji Nakagawa
Keyword(s):  
Individual Level ◽  
Single Tree ◽  
Single Tree Selection ◽  
Selection Harvesting ◽  
Level Analysis ◽  
Mixedwood Stands

scholarly journals Responses of Syrphids, Elaterids and Bees to Single-tree Selection Harvesting in Algonquin Provincial Park, Ontario

2006 ◽  
Vol 120 (1) ◽  
pp. 15 ◽  
Author(s):  
Erica Nol ◽  
Hume Douglas ◽  
William J. Crins
Keyword(s):  
Acer Saccharum ◽  
Sugar Maple ◽  
Forest Understory ◽  
Betula Alleghaniensis ◽  
Click Beetles ◽  
Single Tree ◽  
Single Tree Selection ◽  
Selection Harvesting ◽  
Provincial Park ◽  
Capture Rates

The species composition of hoverflies (Syrphidae), click beetles (Elateridae), and bees (Apoidea) was studied to determine whether there was a positive response in these flower-seeking insect groups to gaps in the canopy created through single-tree selection harvesting of Sugar Maple (Acer saccharum) and Yellow Birch (Betula alleghaniensis) in hardwood forests of the Great Lakes-St. Lawrence forest region of Algonquin Provincial Park, Ontario. There were significantly more hoverflies and bees collected in forest stands harvested within the previous five years than in wilderness zone (unharvested at least for 40 years) stands or stands harvested 15-20 years previously (old logged stands). Click beetles, especially Selatosomus pulcher (LeConte), were collected most often in old logged stands. Bees and click beetles were collected significantly later in the season in logged than in wilderness zone stands. Malaise traps resulted in higher capture rates for syrphids than pan traps, and only with these higher capture rates did we detect a significant increase in species richness in recently logged stands over that in wilderness stands. Changes in the numbers and phenology of flower-visiting insects may impact on reproductive success of flowering plants of the forest understory and deserves further study.

Early seedling response to group selection harvesting in a northern hardwood forest

2010 ◽  
Vol 86 (1) ◽  
pp. 100-109 ◽  
Author(s):  
Karla J. Falk ◽  
Ken A. Elliott ◽  
Dawn M. Burke ◽  
Erica Nol
Keyword(s):  
Group Selection ◽  
Sugar Maple ◽  
Seedling Recruitment ◽  
Betula Alleghaniensis ◽  
Black Cherry ◽  
Percent Cover ◽  
Yellow Birch ◽  
Single Tree ◽  
Single Tree Selection ◽  
Selection Harvesting

We evaluated the immediate effects of group selection harvesting on the establishment of yellow birch (Betula alleghaniensis Britt.) and black cherry (Prunus serotina Ehrh.) seedlings in maple-dominated hardwood stands of Algonquin Provincial Park, Ontario. Group selection gaps were compared to single-tree selection cutting and uncut reference stands pre-harvest and one growing season post-harvest using a before-after-control-impact (BACI) design. The percent cover of yellow birch seedlings increased significantly more in gaps than in single-tree selection and reference plots. Black cherry seedling cover increased significantly more in gaps than in reference plots, but increased at a similar rate in gaps and single-tree selection plots. Increased soil exposure and closer seed trees resulted in increased yellow birch recruitment when harvesting occurred in the late-summer-fall. These factors had little influence on yellow birch recruitment when harvesting occurred in the winter. The proportion of black cherry in the stand overstory had the greatest influence on black cherry recruitment; however, the uneven distribution of black cherry between stands may have precluded our ability to reliably test the influence of other factors. Concomitant increases in potential competitors such as wild red raspberry (Rubus strigosus Michx.) and sedges (Carex spp.) and the continued dominance of sugar maple (Acer saccharum Marsh) in gap openings may limit yellow birch and black cherry regeneration in successive growing seasons. While continued monitoring is required, our short-term results demonstrate that fall harvesting with group selection is effective at stimulating natural regeneration of yellow birch and black cherry. Key words: yellow birch, black cherry, seedling recruitment, group selection, single-tree selection, mid-tolerant, shadeintolerant

Factors affecting northern white-cedar (Thuja occidentalis) seedling establishment and early growth in mixedwood stands

2011 ◽  
Vol 41 (3) ◽  
pp. 568-582 ◽  
Author(s):  
Catherine Larouche ◽  
Jean-Claude Ruel ◽  
Jean-Martin Lussier
Keyword(s):  
Group Selection ◽  
Basal Area ◽  
Early Growth ◽  
Thuja Occidentalis ◽  
White Cedar ◽  
Selection Cutting ◽  
Single Tree ◽  
Single Tree Selection ◽  
Northern White Cedar ◽  
Mixedwood Stands

Regeneration of northern white-cedar ( Thuja occidentalis L.) is often deficient after harvesting in mixedwood stands growing on mesic sites even where browsing pressure is low. We compared the effectiveness of silviculture treatments on early regeneration of white-cedar after single-tree selection cutting (25% of basal area removed), shelterwood seed cut (50% of basal area removed), and group selection cutting (gaps of 625 m2) in three yellow birch ( Betula alleghaniensis Britt.) – softwood uneven-aged stands in Quebec, Canada. Three years after harvesting, the combination of factors that maximized abundance of white-cedar seedlings was single-tree selection cutting with artificial seeding on exposed mineral seedbeds (68.8% of plots with the presence of white-cedar). Early growth of planted white-cedar seedlings (40 cm tall) and biomass production were proportional to light availability, i.e., best under group selection cutting (mean height increment = 14.8 cm/year, mean root collar diameter increment = 3.0 mm/year). Browsing pressure has regional impacts depending on herbivore occupancy of the area. Our study was conducted near the northern limit of white-tailed deer ( Odocoileus virginianus (Zimmerman, 1780)), and deer were locally absent, while snowshoe hare ( Lepus americanus Erxleben, 1777) did not have a consistent effect on seedling abundance and early survival, limiting height growth only during the first year following planting.

scholarly journals Preferences for Northern Hardwood Silviculture among Family Forest Owners in Michigan’s Upper Peninsula

2020 ◽  
Author(s):  
Alexander C Helman ◽  
Matthew C Kelly ◽  
Mark D Rouleau ◽  
Yvette L Dickinson
Keyword(s):  
Species Diversity ◽  
Hardwood Forests ◽  
Family Forest Owners ◽  
Forest Owners ◽  
Upper Peninsula ◽  
Northern Hardwood Forests ◽  
Family Forest ◽  
Northern Hardwood ◽  
Single Tree ◽  
Single Tree Selection

Abstract Managing northern hardwood forests using high-frequency, low-intensity regimes, such as single-tree selection, favors shade-tolerant species and can reduce tree species diversity. Management decisions among family forest owners (FFO) can collectively affect species and structural diversity within northern hardwood forests at regional scales. We surveyed FFOs in the Western Upper Peninsula of Michigan to understand likely future use of three silvicultural treatments—single-tree selection, shelterwood, and clearcut. Our results indicate that FFOs were most likely to implement single-tree selection and least likely to implement clearcut within the next 10 years. According to logistic regression, prior use of a treatment and perceived financial benefits significantly increased the odds for likely use for all three treatments. Having received professional forestry assistance increased likely use of single-tree selection but decreased likely use of shelterwood. We discuss these results within the context of species diversity among northern hardwood forests throughout the region.

Fifty years of partial harvesting in a mixed mesophytic forest: composition and productivity

2004 ◽  
Vol 34 (5) ◽  
pp. 985-997 ◽  
Author(s):  
Thomas M Schuler
Keyword(s):  
Forest Management ◽  
Sugar Maple ◽  
Acer Rubrum ◽  
Timber Harvesting ◽  
Red Oak ◽  
Northern Red Oak ◽  
Single Tree ◽  
Periodic Growth ◽  
Mesophytic Forest ◽  
Single Tree Selection

Long-term silvicultural trials contribute to sustainable forest management by providing a better scientific understanding of how forest ecosystems respond to periodic timber harvesting. In this study, species composition, diversity, and net periodic growth of tree species in a mixed mesophytic forest in the central Appalachians were evaluated after about a half century of management. Three partial cutting practices on 18 research compartments and on 3 unmanaged reference compartments were evaluated (1951–2001) on 280 ha. Single-tree selection, diameter-limit harvesting, and timber harvesting in 0.162-ha patches were assessed on three northern red oak site index50 (SI) classes: 24, 21, and 18. Shannon–Weiner's diversity index (H′) declined from the first (1951–1959) to last (1987–2001) measurements and was related to both SI (P = 0.004) and treatment (P = 0.009). Sugar maple (Acer saccharum Marsh.) and red maple (Acer rubrum L.) were the two most abundant species in recent years (1987–2001); in contrast, in initial inventories (1951–1959), northern red oak (Quercus rubra L.) and chestnut oak (Quercus prinus L.) were most abundant. Net periodic annual increment (PAI) of merchantable trees (DBH ≥12.7 cm) was related to both SI (P = 0.004) and treatment (P = 0.003). Mean PAI ranged from 4.6 m3·ha–1·year–1 for single-tree selection to 2.5 m3·ha–1·year–1 for unmanaged reference areas across all SI classes. The decline of oak species suggests that only intensive and specific forest management focused on maintaining oak species can obtain historical levels of diversity.

scholarly journals Individual-level analysis of differential expression of genes and pathways for personalized medicine

2014 ◽  
Vol 31 (1) ◽  
pp. 62-68 ◽  
Author(s):  
Hongwei Wang ◽  
Qiang Sun ◽  
Wenyuan Zhao ◽  
Lishuang Qi ◽  
Yunyan Gu ◽  
...  
Keyword(s):  
Personalized Medicine ◽  
Differential Expression ◽  
Individual Level ◽  
Expression Of Genes ◽  
Differential Expression Of Genes ◽  
Level Analysis
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