Altered growth and fine root chemistry of Betula papyrifera and Acer saccharum under elevated CO2 forests. Two-year-old Betula papyrifera and 3-year-old Acer saccharum saplings were grown under ambient plants de Betula papyrifera et d'Acer sac- charum respectivement ...

Background and AimsAcer saccharum and Fagus grandifolia are among the most dominant late-successional tree species in North America. The influence of sapling growth responses to canopy gaps on the co-dominance of the two species in an old-growth forest in southern Quebec, Canada was examined. Two predictions were evaluated: (a) F. ...

Saplings of many canopy tree species in winter deciduous forests receive the major portion of their light budget for their growing season prior to canopy closure in the spring. This period of high light may be critical for achieving a positive carbon (C) gain, thus contributing strongly to their growth and survival. This study of saplings of Aesculus ...

-tree biomass allo- cation in seedlings and saplings of shade-tolerant sugar maple (Acer saccharum Marsh (0.5 to 35% of full sunlight) or in understory light reduced by 50% with shade nets to simulate in unmodifiedunderstory light thansugar maple.Sugar mapledid not display significant physiological plasticity, but showed

of photosynthetically active radiation it receives. The radiation regime is tracked explicitly in dierent parts m2 IPAR Annual photosynthetically active incoming radiation MJ m�2 per year Ia b Total radiation overhead. Absorption of radiation by leaves Computation of the photosynthetic irradiance for a leaf

), is complex and substantial. Over a 5-m distance in a gap from edge to centre and from the forest floor to the closed forest (Endler, 1993; Lei et al., 1998) due to stronger diffused radiation. Within a gap and photosynthetic carbon gain in Acer saccharum seedlings in contrasting forest light environments. Functional

. (intermediate shade tolerant), and Prunus serotina Ehrh. (shade intolerant) were harvested from a forest, and with the exception of P. serotina, the very shade-tolerant A. saccharum had the lowest LAR. Prunus serotina in the understory. Key words: Acer; Fraxinus; light environment; nitrogen; Prunus; root/shoot ratio; shade tolerance

... Seed and Seedling Ecology of Acer saccharum and Acer platanoides: A Contrast Between Native and Exotic CongenersScott J. ... 3099; cfsjm2@eiu.edu Abstract The exotic tree, Acer platanoides, is increasing...

this paper the terms broad-leaved and hardwood are used instead of the more-correct botanical term, angiosperm). Our second objective was to apply the modied LIGNUM model to simulate the development of sugar maple saplings (Acer saccharum Marsh) growing in forest gaps. This involved parameterizing and implementing the functioning and ...

Jun 16, 2011 ... Bookmark and Share. Title: Carbohydrate reserves in Acer saccharum trees damaged during the January 1998 ice storm in northern New York ...

Heavy atmospheric nitrogen (N) deposition has been associated with altered nutrient cycling, and even N saturation, in forest ecosystems previously thought to be N-limited. This observation has prompted application to such forests of non-N mineral nutrients as a mitigation measure. We examined leaf gas-exchange, leaf chemistry and leaf and shoot morphological responses of Acer ...

Impact of the 1998 ice storm on the health and growth of sugar maple (Acer saccharum Marsh health and growth in sugar maple (Acer saccharum Marsh.) dominated forests of Gatineau Park, Quebec. J and dendrochronological techniques we examined the response to the ice storm of sugar maple (Acer ...

HB Hardwoods Softwoods Betula papyrifera Betula alleghaniensis Acer pensylvanicum Acer rubrum Acer papyrifera Betula alleghaniensis Acer pensylvanicum Acer rubrum Acer saccharum Fagus grandifolia Fraxinus saccharum Marsh.), yellow ...

Interspecific differences in sapling growth responses to soil resources could influence species distributions across soil resource gradients. I calibrated models of radial growth as a function of light intensity and landscape-level variation in soil water and foliar N for saplings of four canopy tree species, which differ in adult distributions across soil ...

Above- and belowground tissues of co-occurring saplings (0.1-1 m height) of Acer saccharum Marsh. (very shade tolerant), Acer rubrum L. (shade tolerant), Fraxinus americana L. (intermediate shade tolerant), and Prunus serotina Ehrh. (shade intolerant) were harvested from a forest understory to test the hypothesis ...

fraseri, Acer rubrum, Acer saccharum, Picea rubens, Prunus pensylvanica, Magnolia acuminata var. acuminata