Seasonal changes in carbon and nitrogen compound concentrations in a Quercus petraea chronosequence
نویسندگان
چکیده
منابع مشابه
Seasonal changes in carbon and nitrogen compound concentrations in a Quercus petraea chronosequence.
Forest productivity declines with tree age. This decline may be due to changes in metabolic functions, resource availability and/or changes in resource allocation (between growth, reproduction and storage) with tree age. Carbon and nitrogen remobilization/storage processes are key to tree growth and survival. However, studies of the effects of tree age on these processes are scarce and have not...
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Two types of physiological mechanisms can contribute to growth decline with age: (i) the mechanisms leading to the reduction of carbon assimilation (input) and (ii) those leading to modification of the resource economy. Surprisingly, the processes relating to carbon allocation have been little investigated as compared to research on the processes governing carbon assimilation. The objective of ...
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Adsorption of DOM by soil has been implicated as a very important factor in controlling the loss of DOM Leaching of dissolved organic matter (DOM) and the associated from ecosystems in stream water (McDowell and Wood, nutrient elements can be a significant form of loss from developing 1984; Nelson et al., 1993; Qualls et al., 2002). Several ecosystems. We studied how the adsorption of dissolved...
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Seasonal changes in optically assessed epidermal phenolic compounds and chlorophyll contents in leaves of sessile oak (Quercus petraea): towards signatures of phenological stage
Seasonal patterns of dry mass invested in chlorophyll and epidermal phenolic compounds (EPhen) were investigated in vivo using optical methods, in leaves of 2-year-old oaks (Quercus petraea Matt. (Liebl.)) grown under semi-controlled conditions. The plasticity of the seasonal pattern was investigated by applying stem girdling treatment. In control young expanding leaves, leaf dry mass per area,...
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ژورنال
عنوان ژورنال: Tree Physiology
سال: 2014
ISSN: 0829-318X,1758-4469
DOI: 10.1093/treephys/tpu060