Nitrogen resorption in Acer platanoides and Acer saccharum: influence of light exposure and leaf pigmentation
نویسندگان
چکیده
منابع مشابه
Light drives vertical gradients of leaf morphology in a sugar maple (Acer saccharum) forest.
Leaf mass per area (LMA, g m(-2)) is an essential trait for modeling canopy function due to its strong association with photosynthesis, respiration and leaf nitrogen. Leaf mass per area, which is influenced by both leaf thickness and density (LMA = thickness × density), generally increases from the bottom to the top of tree canopies, yet the mechanisms behind this universal pattern are not yet ...
متن کاملLeaf nutrition and photosynthetic performance of sugar maple (Acer saccharum) in stands with contrasting health conditions.
Leaf nutrition and photosynthetic performance of sugar maple (Acer saccharum Marsh.) were compared between two sugar maple stands in northwestern Vermont with contrasting health conditions as indicated by annual basal area growth, degree of crown dieback, and foliar appearance. Observations made during the diurnal cycle of both stands showed no apparent leaf water stress. In both stands, leaves...
متن کاملEffects of elevated atmospheric CO(2) and temperature on leaf optical properties in Acer saccharum.
Elevated partial pressures of atmospheric carbon dioxide, similar to numerous causes of plant stress, may alter leaf pigmentation and structure and thus would be expected to alter leaf optical properties. Hypotheses that elevated CO(2) pressure and air temperature would alter leaf optical properties were tested for sugar maple (Acer saccharum) in the middle of its fourth growing season under tr...
متن کاملRed reveals branch die-back in Norway maple Acer platanoides.
BACKGROUND AND AIMS Physiological data suggest that autumn leaf colours of deciduous trees are adaptations to environmental stress. Recently, the evolution of autumn colouration has been linked to tree condition and defence. Most current hypotheses presume that autumn colours vary between tree individuals. This study was designed to test if within-tree variation should be taken into account in ...
متن کاملAcer pseudoplAtAnus L., Acer plAtAnoides L. and BetulA pendulA Roth. as bioindicatoRs of uRban poLLution in sofia
Acer pseudoplatanus L., Acer platanoides L. and Betula pendula Roth. have been studied under the urban pollution in Sofia during 3 years period. The aim of the study was, by statistical multifactorial analysis, to assess the value changes in morphological parameters of species under air pollution and potential for species usage as bioindicators in observed regions. The statistical analysis incl...
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ژورنال
عنوان ژورنال: Acta Physiologiae Plantarum
سال: 2014
ISSN: 0137-5881,1861-1664
DOI: 10.1007/s11738-014-1674-x