Growth and photosynthetic responses of white spruce seedlings to levels of trembling aspen and red raspberry cover

View/ Open
Date
2012-11-10Author
Simpson, Louise E.
Subject
White spruce seedlingsTrembling aspen (Populus tremuloides Michx.)
Red raspberry (Rubus idaeus L.)
White spruce (Picea glauca [Moench.] Voss)
Ground line diameter
Photosynthetically active radiation
Metadata
Show full item recordAbstract
The effect of competitve species upon crop tree regeneration and growth continues to receive attention from researchers due to the importance of the outcomes. This study stakes a new approach, by examining the combined effects of varied levels of trembling aspen (Populus tremuloides Michx.) and red raspberry (Rubus idaeus L.) upon microclimate and 68-83 cm high white spruce (Picea glauca [Moench.] Voss) seedling growth and rates of photosynthesis. Regression, curve estimation and response surface methodology were used to examine the interactions between the two competitive species and the crop species, to ascertain the importance of each competitor and in what aspect it competes.