Academic Journal
The contribution of acorn and soil N to early development of Chinese cork oak (Quercus variabilis Blume) seedlings under contrasting soil fertility conditions
| العنوان: | The contribution of acorn and soil N to early development of Chinese cork oak (Quercus variabilis Blume) seedlings under contrasting soil fertility conditions |
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| المؤلفون: | Zhao, Kaifen, Villar Salvador, Pedro, Li, Guolei |
| المساهمون: | Universidad de Alcalá. Departamento de Ciencias de la Vida, Unidad Docente Ecología |
| سنة النشر: | 2024 |
| المجموعة: | e_Buah - Biblioteca Digital de la Universidad de Alcalá |
| مصطلحات موضوعية: | Acorn N, N allocation, 15N-labelling, Remobilization, Soil N, Ecología, Ecology |
| الوصف: | 40 p. ; Several studies have addressed the role of soil fertility on acorn N remobilization during seedling growth, but have focused on very early development stages or have assessed remobilization at a coarse grain ontogenetic scale making it difficult to know the precise time when seedlings switch from acorn N to soil N use. We cultivated Quercus variabilis seedlings under two distinct soil N fertility and assessed their growth, acorn N remobilization, and absorption of soil N at five distinct development stages, spanning from the incipient shoot emergence to the completion of the second flush of growth. Acorn N contributed more to seedling N content than soil N at all development stages. Seedlings began to uptake substantial amounts of soil N after the completion of leaf expansion during the first shoot flush of growth, coinciding with a fine root area that reached 50% of the maximum value observed at the end of the study. Roots became less dependent on acorn N before shoots. Soil fertility, rather than seedling growth rate, determined soil N uptake after the completion of leaf expansion in the first shoot flush of growth. We conclude that the acorn is the primary N source for Q. variabilis seedlings until the completion of the first shoot flush of growth. Soil fertility does not significantly affect either the amount of N remobilized from acorns or the switch from acorn N to massive soil N use, suggesting a minimal effect of forest microhabitat fertility on acorn N utilization by Q. variabilis seedlings. ; Gobierno de España ; Comunidad de Madrid ; National Natural Science Foundation of China ; China Scholarship Council |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| Relation: | info:eu-repo/grantAgreement/MICINN/ QueVADIS/PID2022-141762OB-I00/ES//; info:eu-repo/grantAgreement/CM/REMEDINAL/S2018%EMT-4338/ES//; http://hdl.handle.net/10017/60670; AR/0000047077; Trees; online |
| DOI: | 10.1007/s00468-023-02481-7 |
| الاتاحة: | http://hdl.handle.net/10017/60670 https://doi.org/10.1007/s00468-023-02481-7 |
| Rights: | Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) ; http://creativecommons.org/licenses/by-nc-nd/4.0/ ; info:eu-repo/semantics/openAccess |
| رقم الانضمام: | edsbas.46EC0EF |
| قاعدة البيانات: | BASE |
| DOI: | 10.1007/s00468-023-02481-7 |
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