scholarly journals Factors limiting the success of invasive glossy buckthorn (Frangula alnus) in New Hampshire’s eastern white pine – hardwood forests

2020 ◽  
Vol 474 ◽  
pp. 118345 ◽  
Author(s):  
Hayley A. Bibaud ◽  
Mark J. Ducey ◽  
Michael J. Simmons ◽  
Hannah C. McCarthy ◽  
Riley N. Bibaud ◽  
...  
Keyword(s):  
Hardwood Forests ◽  
White Pine ◽  
Eastern White Pine ◽  
Frangula Alnus ◽  
Glossy Buckthorn

Rare forest types in northeastern Ontario: a classification and analysis of representation in protected areas

2010 ◽  
Vol 40 (3) ◽  
pp. 423-435 ◽  
Author(s):  
Charles R. Drever ◽  
James Snider ◽  
Mark C. Drever
Keyword(s):  
Protected Areas ◽  
Local Population ◽  
Red Oak ◽  
Betula Alleghaniensis ◽  
White Pine ◽  
Yellow Birch ◽  
Eastern White Pine ◽  
Habitat Specificity ◽  
White Cedar ◽  
Eastern White Cedar

Our objective was to assess the relative rarity and representation within protected areas of Standard Forest Units (SFUs) in northeastern Ontario by applying the concepts of geographic range, habitat specificity, and local population size. SFUs are stand type classifications, routinely employed by forest managers, based on tree composition, disturbance history, and prescribed silvicultural system. We identified several SFUs as rare because of a narrow distribution, association with only one landform type, or lack of at least one stand larger than an ecoregion-specific threshold. In the Boreal forest, rare SFUs comprised stands dominated by eastern hemlock ( Tsuga canadensis (L.) Carrière), red oak ( Quercus rubra L.), yellow birch ( Betula alleghaniensis Britt.), or eastern white-cedar ( Thuja occidentalis L.). Rare SFUs also included eastern white pine ( Pinus strobus L.) and (or) red pine ( Pinus resinosa Ait.) leading stands managed by shelterwood or seed tree silviculture as well as low-lying deciduous stands and selection-managed stands of shade-tolerant species. In the Great Lakes – St. Lawrence forest, rare SFUs were yellow birch stands, stands dominated by conifer species abundant in the Boreal, and shelterwood-managed hardwood stands. Several rare SFUs had <12% of their total area in protection, i.e., stands dominated by eastern white pine, yellow birch, eastern white pine – red oak, or eastern white-cedar. These rare stand types require increased protection in reserves and tailored silvicultural practices to maintain their probability of persistence.

Species mixture effects in northern red oak–eastern white pine stands in Maine, USA

2013 ◽  
Vol 298 ◽  
pp. 71-81 ◽  
Author(s):  
Justin Waskiewicz ◽  
Laura Kenefic ◽  
Aaron Weiskittel ◽  
Robert Seymour
Keyword(s):  
Red Oak ◽  
Northern Red Oak ◽  
White Pine ◽  
Eastern White Pine ◽  
Mixture Effects ◽  
Species Mixture ◽  
Pine Stands

scholarly journals Eastern white pine and eastern hemlock growth: possible tradeoffs in response of canopy trees to climate

2021 ◽  
Author(s):  
Rebecca L. Stern ◽  
Paul Schaberg ◽  
Shelly A Rayback ◽  
Paula F. Murakami ◽  
Christopher Hansen ◽  
...  
Keyword(s):  
Maximum Growth ◽  
Eastern Hemlock ◽  
Competitive Advantages ◽  
White Pine ◽  
Eastern White Pine ◽  
Canopy Trees ◽  
Pollutant Deposition ◽  
Summer Temperatures ◽  
Spring Temperatures ◽  
Over Time

A warming climate and extended growing season may confer competitive advantages to temperate conifers that can photosynthesize across seasons. Whether this potential translates into increased growth is unclear, as is whether pollution could constrain growth. We examined two temperate conifers - eastern white pine (Pinus strobus L.) and eastern hemlock (Tsuga canadensis (L.) Carrière) - and analyzed associations between growth (476 trees in 23 plots) and numerous factors, including climate and pollutant deposition variables. Both species exhibited increasing growth over time and eastern white pine showed greater maximum growth. Higher spring temperatures were associated with greater growth for both species, as were higher autumnal temperatures for eastern hemlock. Negative correlations were observed with previous year (eastern hemlock) and current year (eastern white pine) summer temperatures. Spring and summer moisture availability were positively correlated with growth for eastern white pine throughout its chronology, whereas for hemlock, correlations with moisture shifted from being significant with current year’s growth to previous year’s growth over time. The growth of these temperate conifers might benefit from higher spring (both species) and fall (eastern hemlock) temperatures, though this could be offset by reductions in growth associated with hotter, drier summers.

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