Fine-root morphological and growth traits in a Turkey-oak stand in relation to seasonal changes in soil moisture in the Southern Apennines, Italy |
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| Authors: | Antonio Montagnoli Mattia Terzaghi Antonino Di Iorio Gabriella Stefania Scippa Donato Chiatante |
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| Affiliation: | 1. Department of Biotechnology and Life Science, University of Insubria, Via Dunant 3, 21100, Varese, Italy
2. Department of Science and Technology for Environment and Territory, University of Molise, Contrada Fonte Lappone, 86190, Pesche, IS, Italy
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| Abstract: | We investigated the effects of seasonal changes in soil moisture on the morphological and growth traits of fine roots (<2?mm in diameter) in a mature Turkey-oak stand (Quercus cerris L.) in the Southern Apennines of Italy. Root samples (diameter:?<0.5, 0.5?C1.0, 1.0?C1.5, and 1.5?C2.0?mm) were collected with the Auger method. Mean annual fine-root mass and length on site was 443?g?m?2 (oak fine roots 321?g?m?2; other species 122?g?m?2) and 3.18?km?m?2 (oak fine roots 1.14?km?m?2; other species 2.04?km?m?2), respectively. Mean specific root length was 8.3?m?g?1. All fine-root traits displayed a complex pattern that was significantly related to season. In the four diameter classes, both fine-root biomass and length peaked in summer when soil water content was the lowest and air temperature the highest of the season. Moreover, both fine-root biomass and length were inversely related with soil moisture (p?p?
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