caa a22 4500 606218971 CHVBK 20210128101115.0 cr unu---uuuuu 210128e20150601xx s 000 0 eng 10.1007/s11104-015-2426-4 doi (NATIONALLICENCE)springer-10.1007/s11104-015-2426-4 Is phosphorus limiting in a mature Eucalyptus woodland? Phosphorus fertilisation stimulates stem growth [Elektronische Daten] [K. Crous, A. Ósvaldsson, D. Ellsworth] Aims: Few direct tests of phosphorus (P) limitation on highly-weathered soils have been conducted, especially in mature, native Eucalyptus stands. We tested whether growth in a mature >80-year old stand of Eucalyptus tereticornis in Cumberland Plain Woodland was limited by P, and whether this P-limitation affected leaf photosynthetic capacity. Methods: P was added to trees at the native woodland site at 50kgha-1year-1 in each of 3years, and stem and leaf responses were measured. Results: Leaf P concentrations before fertilisation were < 1mgg-1 and N:P ratios ranged between 16 and 23. Addition of 50kgha-1 year-1 of P increased leaf P concentration significantly (+50%) compared to non-fertilised trees, for two but not for the 3years. Despite higher leaf P in fertilised trees, photosynthetic capacity was unaffected. However, there was a 54% increase in tree stem basal area growth during the first and second years of P fertilisation, statistically significant in the second year of the experiment. Conclusions: Our evidence shows that E. tereticornis is P-limited on Cumberland Plain soils. This has implications for forest responses to rising atmospheric [CO2], because photosynthesis in elevated [CO2] may become further constrained by required phosphate pools within the photosynthetic apparatus. Springer International Publishing Switzerland, 2015 EucFACE nationallicence Basal area increment nationallicence Eucalyptus tereticornis nationallicence Leaf N:P ratio nationallicence Nutrients nationallicence Photosynthesis nationallicence Stem growth nationallicence Crous K. Hawkesbury Institute for the Environment, University of Western Sydney, NSW 2751, Penrith, Australia aut Ósvaldsson A. Hawkesbury Institute for the Environment, University of Western Sydney, NSW 2751, Penrith, Australia aut Ellsworth D. Hawkesbury Institute for the Environment, University of Western Sydney, NSW 2751, Penrith, Australia aut Plant and Soil Springer International Publishing 391/1-2(2015-06-01), 293-305 0032-079X 391:1-2<293 2015 391 11104 https://doi.org/10.1007/s11104-015-2426-4 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s11104-015-2426-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Crous K. Hawkesbury Institute for the Environment, University of Western Sydney, NSW 2751, Penrith, Australia aut NATIONALLICENCE 700 1- Ósvaldsson A. Hawkesbury Institute for the Environment, University of Western Sydney, NSW 2751, Penrith, Australia aut NATIONALLICENCE 700 1- Ellsworth D. Hawkesbury Institute for the Environment, University of Western Sydney, NSW 2751, Penrith, Australia aut NATIONALLICENCE 773 0- Plant and Soil Springer International Publishing 391/1-2(2015-06-01), 293-305 0032-079X 391:1-2<293 2015 391 11104