Toxigenic Foliar Endophytes from the Acadian Forest

2018 ◽  
pp. 343-381 ◽  
Author(s):  
Joey B. Tanney ◽  
David R. McMullin ◽  
J. David Miller
Keyword(s):  
Acadian Forest

Exploring the Recruitment Dynamics of Sugar Maple and Yellow Birch Saplings into Merchantable Stems Following Harvesting in the Acadian Forest Region of New Brunswick, Canada

2021 ◽  
Author(s):  
Alex Noel ◽  
Jules Comeau ◽  
Salah-Eddine El Adlouni ◽  
Gaetan Pelletier ◽  
Marie-Andrée Giroux
Keyword(s):  
New Brunswick ◽  
Sugar Maple ◽  
Basal Area ◽  
Stem Density ◽  
Yellow Birch ◽  
Probability Of Occurrence ◽  
Silvicultural Treatment ◽  
Forest Region ◽  
Wide Range ◽  
Acadian Forest

The recruitment of saplings in forest stands into merchantable stems is a very complex process, thus making it challenging to understand and predict. The recruitment dynamics in the Acadian Forest Region of New Brunswick are not well known or documented. Our objective was to draw an inference from existing large scale routine forest inventories as to the different dynamics behind the recruitment from the sapling layer into the commercial tree size layer in terms of density and occurrence of sugar maple (Acer saccharum Marsh.) and yellow birch (Betula alleghaniensis Britt.) following harvesting, by looking at many factors on a wide range of spatial and temporal scales using models. Results suggest that the variation in density and probability of occurrence is best explained by the intensity of silvicultural treatment, by the merchantable stem density in each plot, and by the proportion of merchantable basal area of each group of species. The number of recruits of sugar maple and yellow birch stems tend be higher when time since last treatment increases, when mid to low levels of silvicultural treatment intensity were implemented, and within plots having intermediate levels of merchantable stem density. Lastly, our modeling efforts suggest that the probability of occurrence and density of recruitment of both species tend to increase while its share of merchantable basal area increases.

Old-growth forests of the Acadian Forest Region

2003 ◽  
Vol 11 (S1) ◽  
pp. S47-S77 ◽  
Author(s):  
A Mosseler ◽  
J A Lynds ◽  
J E Major
Keyword(s):  
Old Growth ◽  
Forest Region ◽  
Old Growth Forests ◽  
Acadian Forest

Forest structure more important than topography in determining windthrow during Hurricane Juan in Canada’s Acadian Forest

2019 ◽  
Vol 434 ◽  
pp. 255-263 ◽  
Author(s):  
Anthony R. Taylor ◽  
Evan Dracup ◽  
David A. MacLean ◽  
Yan Boulanger ◽  
Sarah Endicott
Keyword(s):  
Forest Structure ◽  
Acadian Forest

Fate of Spinosad in Litter and Soils of a Mixed Conifer Stand in the Acadian Forest Region of New Brunswick

2002 ◽  
Vol 50 (4) ◽  
pp. 790-795 ◽  
Author(s):  
Dean G. Thompson ◽  
Brenda J. Harris ◽  
Leonard J. Lanteigne ◽  
Teresa M. Buscarini ◽  
Derek T. Chartrand
Keyword(s):  
New Brunswick ◽  
Mixed Conifer ◽  
Forest Region ◽  
Acadian Forest

Comparison of plantations and naturally regenerated clearcuts in the Acadian Forest: forest floor bryophyte community and habitat features

2002 ◽  
Vol 80 (1) ◽  
pp. 21-33 ◽  
Author(s):  
Amy L Ross-Davis ◽  
Katherine A Frego
Keyword(s):  
Community Composition ◽  
Forest Floor ◽  
Tree Canopy ◽  
Stand Age ◽  
Percent Cover ◽  
Managed Forests ◽  
Habitat Features ◽  
Clear Cut ◽  
Disturbance Regimes ◽  
Acadian Forest

To address concern for loss of bryophyte biodiversity within managed forests, we compared community composition and environmental characteristics among three disturbance regimes: (i) naturally regenerated clear-cut forests, (ii) cutover spruce plantations (established on clear-cut forest land), and (iii) afforested field spruce plantations (established on agricultural fields) across a range of ages (19–102 years) in the Acadian Forest region of New Brunswick, Canada. Abundances of all forest floor bryophyte species, available substrates, microtopographical features, and tree canopy were measured as percent cover (1 m2) in 26 stands: 12 naturally regenerated clear-cut forests, eight cutover plantations, and six afforested field plantations. Multivariate analyses indicated that both bryophyte community composition and associated environment differed significantly across disturbance regimes, with no strong trends related to time since clearing (i.e., stand age). Spruce plantations were characterized by low substrate diversity and microtopographic and canopy homogeneity. Both plantation types had lower bryophyte species richness, evenness, and diversity (H') relative to naturally regenerated clear-cut forests; cutover plantations had the highest total bryophyte cover. The bryophyte community of plantations was composed of a subset of species found within naturally regenerated clear-cut forests: many liverworts and epixylic mosses were absent, with fewer pioneer species and more perennial stayers (equivalent to K-strategists) than expected.Key words: bryophyte, disturbance regime, substrate, canopy, microtopography, plantation.

The upland hardwood component of Prince Edward Island's remnant Acadian forest: determination of depth of edge and patterns of exotic plant invasion

2003 ◽  
Vol 81 (11) ◽  
pp. 1113-1128 ◽  
Author(s):  
Kate MacQuarrie ◽  
Christian Lacroix
Keyword(s):  
Exotic Species ◽  
Plant Community ◽  
Plant Invasion ◽  
Vascular Plants ◽  
Canopy Cover ◽  
Percent Cover ◽  
Exotic Plant ◽  
Exotic Plant Invasion ◽  
Acadian Forest ◽  
Study Sites

The upland hardwood component of Prince Edward Island's Acadian forest is among the best remaining examples of the precolonial landscape, but it has been severely fragmented during the past 300 years of human use and settlement. Despite the ecological importance of this remnant habitat and its level of fragmentation, there has been no assessment of depth of edge or exotic plant invasion in these areas. Three 300 m long edge–interior transects were established in each of six study sites. Nine 100-m2 circular plots were sampled along each transect at distances from 5.7 to 300 m; one external plot was established at each transect to sample species in adjacent habitats. In each plot, all vascular plants were identified, a visual estimate of percent cover was made, and soil temperature, canopy cover, and tree diameters were measured. An edge–interior plant community gradient was found within these forests; a plant community characteristic of interior conditions was not reached until a distance of more than 120 m from an edge. This suggests that upland hardwood protected areas smaller than 240 m on a side (5.75 ha) are unlikely to include interior habitat, and sites should be greater than 320 m on all sides (10.24 ha) to ensure at least some interior habitat for vascular plants. Invasion by exotic species was found to be more extensive than that reported from other jurisdictions, and innermost (300 m) plots were not free from exotics. Fifteen exotic species were found within the study sites, with Veronica officinalis (common speedwell) and Hieracium lachenalii (hawkweed) being the most invasive, both in terms of distance penetrated and area covered.Key words: Acadian forest, fragmentation, depth of edge, protected area, Veronica, Hieracium.

Arboreal Arthropod Associations with Epiphytes Following Gap Harvesting in The Acadian Forest of Maine

2008 ◽  
Vol 111 (3) ◽  
pp. 424-434 ◽  
Author(s):  
Kathryn M. Miller ◽  
Robert G. Wagner ◽  
Stephen A. Woods
Keyword(s):  
Acadian Forest
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