Long-term prescribed burning increases nutrient uptake and growth of loblolly pine seedlings |
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| Affiliation: | 1. From the The Warren Alpert Medical School of Brown University, Providence, Rhode Island;2. Department of Internal Medicine and Pediatrics, Rhode Island Hospital, Providence, Rhode Island;3. Division of Pediatric Endocrinology, Floating Hospital for Children at Tufts Medical Center, Boston, Massachusetts;4. Lifespan Biostatistics Core, Rhode Island Hospital, Providence, Rhode Island;5. Division of Pediatric Endocrinology, Hasbro Children''s Hospital, Providence, Rhode Island.;1. Departament de Ciències Experimentals i de la Salut, Universitat Pompeu Fabra, Parc de Recerca Biomèdica de Barcelona (PRBB), Barcelona, Spain;2. Department of Cell Physiology and Metabolism, Geneva University Medical Center, Geneva, Switzerland;3. Diabetes Research Laboratory. IDIBAPS (Institut Investigacions Biomèdiques August Pi i Sunyer), CIBERDEM, Barcelona, Spain;1. Institute of Botany, Czech Academy of Science, Průhonice, Czech Republic;2. Faculty of Science, University of South Bohemia, České Budějovice, Czech Republic;3. Global Change Research Institute CAS, Brno, Czech Republic;4. Biology Centre CAS, Institute of Hydrobiology, České Budějovice, Czech Republic;5. Czech Hydrometeorological Institute, Prague, Czech Republic;6. Czech Geological Survey, Klárov 3, 118 21 Prague, Czech Republic;7. IFER – Institute of Forest Ecosystem Research, Jílové u Prahy, Czech Republic;8. Charles University, Faculty of Science, Department of Physical Geography and Geoecology, Albertov 6, 12843 Prague, Czech Republic |
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| Abstract: | Loblolly pine (Pinus taeda L.) seedlings were grown from seed in a greenhouse on A1 horizon soil collected from field plots that have been burned each winter or maintained in an unburned condition for 33 years. Soils from burned and unburned plots were treated with phosphorus (P), P and calcium (Ca), or left untreated. After 32 weeks, height, biomass, and nitrogen (N) and P uptake were greater on soil from burned versus unburned plots, although application of P masked these effects. Addition of P increased plant biomass, seedling height, and uptake of N and P, but depressed levels of soil NH4N. These results suggest that long-term prescribed burning may have a positive effect on nutrient availability that will benefit seedlings of the next stand. |
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