دورية أكاديمية
Increase in size and nitrogen concentration enhances seedling survival in Mediterranean plantations. Insights from an ecophysiological conceptual model of plant survival.
| العنوان: | Increase in size and nitrogen concentration enhances seedling survival in Mediterranean plantations. Insights from an ecophysiological conceptual model of plant survival. |
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| المؤلفون: | Villar Salvador, Pedro, Puértolas Simón, Jaime, Cuesta Poveda, Bárbara, Peñuelas Rubira, Juan Luis, Uscola Fernández, María Mercedes, Heredia Guerrero, Norberto, Rey Benayas, José María |
| المساهمون: | Universidad de Alcalá. Departamento de Ciencias de la Vida. Unidad docente Ecología, Universidad de Alcalá. Departamento de Ciencias de la Vida |
| سنة النشر: | 2012 |
| المجموعة: | e_Buah - Biblioteca Digital de la Universidad de Alcalá |
| مصطلحات موضوعية: | Carbohydrates, Drought stress, Fertilization, Forest plantation, Nitrogen, Nutrients, Photosynthesis, Plant quality, Remobilization, Root growth, Medio Ambiente, Environmental science |
| الوصف: | RESUMEN INCOMPLETO. Reduction in size and tissue nutrient concentration is widely considered to increase seedling drought resistance in dry and oligotrophic plantation sites. However, much evidence indicates that increase in size and tissue nutrient concentration improves seedling survival in Mediterranean forest plantations. This suggests that the ecophysiological processes and functional attributes relevant for early seedling survival in Mediterranean climate must be reconsidered. We propose a ecophysiological conceptual model for seedling survival in Mediterranean-climate plantations to provide a physiological explanation of the frequent positive relationship between outplanting performance and seedling size and nutrient concentration. The model considers the physiological processes outlined in the plantation establishment model of Burdett (Can J For Res 20:415&#-427, 1990), but incorporates other physiological processes that drive seedling survival, such as N remobilization, carbohydrate storage and plant hydraulics. The model considers that seedling survival in Mediterranean climates is linked to high growth capacity during the wet season. The model is for container plants and is based on three main principles, (1) Mediterranean climates are not dry the entire year but usually have two seasons of contrasting water availability; (2) summer drought is the main cause of seedling mortality; in this context, deep and large roots is a key trait for avoiding lethal water stress; (3) attainment of large root systems in the dry season is promoted when seedlings have high growth during the wet season. High growth is achieved when seedlings can divert large amount of resources to support new root and shoot growth. Functional traits that confer high photosynthesis, nutrient remobilization capacity, and non-structural carbohydrate storage promote high growth. Increases in seedling size and nutrient concentration strongly affect these physiological processes. ; Centro "El Serranillo" (Ministerio de Agricultura, ... |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 0169-4286 |
| العلاقة: | info:eu-repo/grantAgreement/MICINN//CGL2010-18312/ES/Restauración de la biodiversidad y los servicios ecosistémicos en sistemas agrarios. Un enfoque multi-escala; info:eu-repo/grantAgreement/CAM/Programa de Activiades de I+D por Grupos de Investigación Consolidados de la Comunidad de Madrid/S2009%2FAMB-1783/ES/Restauración y conservación de los ecosistemas madrileños: respuesta frente al cambio global/REMEDINAL-2; info:eu-repo/grantAgreement/MICINN//AGL2011-24296/ES/Tolerancia y estrategias ecofisiológicas de los pinos ibéricos durante la fase juvenil en respuesta al estrés hídrico, las bajas temperaturas y la disponibilidad de nutrientes/ECOLPIN; FPI and FPU grants (Ministerio de Economia y Competitividad); New Forests, 2012, v. 43, n. , p. 755-770; http://hdl.handle.net/10017/38529Test; AR/0000016826; New Forests; 43; 770; 755 |
| DOI: | 10.1007/s11056-012-9328-6 |
| الإتاحة: | https://doi.org/10.1007/s11056-012-9328-6Test http://hdl.handle.net/10017/38529Test |
| حقوق: | Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) ; © Springer Science+Business Media B.V. 2012 ; http://creativecommons.org/licenses/by-nc-nd/4.0Test/ ; https://www.springer.com/gp/open-access/springer-open-choiceTest ; info:eu-repo/semantics/openAccess |
| رقم الانضمام: | edsbas.FD795C8 |
| قاعدة البيانات: | BASE |
| تدمد: | 01694286 |
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| DOI: | 10.1007/s11056-012-9328-6 |