naa a22 4500 51073815X CHVBK 20180411083018.0 cr unu---uuuuu 180411e20130301xx s 000 0 eng 10.1007/s11284-011-0836-1 doi (NATIONALLICENCE)springer-10.1007/s11284-011-0836-1 Dynamics of mineral nutrient storage for mast reproduction in the tropical emergent tree Dryobalanops aromatica [Elektronische Daten] [Tomoaki Ichie, Michiko Nakagawa] Limitations in resources are considered to be important in mass-fruiting trees, based on the speculation that they need to consume a large amount of stored resources in a very short period. To test this hypothesis, we studied the total reproductive costs per individual of the tree Dryobalanops aromatica (Dipterocarpaceae), and the dynamics of stored mineral nutrients, specifically nitrogen, phosphorus, and potassium; we then estimated the contribution of each of the stored resources to reproduction in a lowland dipterocarp forest in Sarawak, Malaysia. D. aromatica is an emergent and masting tree species, and it produced a large amount of mature fruit in a masting period running 2001-2002. The dynamics patterns were markedly different for each of the stored nutrients. The phosphorus concentration clearly decreased in the branch, stem and root during reproduction, but nitrogen fluctuated by only a small amount in any organ during this period. The potassium concentration fell in all organs during flowering, but even increased during fruit development. Stored phosphorus accounted for 67.7% of the total phosphorus requirements for reproduction, but nitrogen accounted for only 19.7%. Stored potassium did not appear to contribute anything, at least to fruit production. Our results suggest that D. aromatica supplies phosphorus needed for reproduction mainly from stored resources in the tree, unlike nitrogen or potassium. The accumulation of phosphorus could be the decisive factor in the occurrence and frequency of mast reproduction in the relatively poor soil conditions prevailing in the tropical rain forests of Southeast Asia. The Ecological Society of Japan, 2011 Dipterocarpaceae nationallicence Masting nationallicence Nitrogen nationallicence Phosphorus nationallicence Potassium nationallicence Reproductive allocation nationallicence Ichie Tomoaki Faculty of Agriculture, Kochi University, Nankoku, 783-8502, Japan aut Nakagawa Michiko Graduate School of Bioagricultural Sciences, Nagoya University, 464-8601, Nagoya, Japan aut Ecological Research Springer Japan 28/2(2013-03-01), 151-158 0912-3814 28:2<151 2013 28 11284 https://doi.org/10.1007/s11284-011-0836-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11284-011-0836-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ichie Tomoaki Faculty of Agriculture, Kochi University, Nankoku, 783-8502, Japan aut NATIONALLICENCE 700 1- Nakagawa Michiko Graduate School of Bioagricultural Sciences, Nagoya University, 464-8601, Nagoya, Japan aut NATIONALLICENCE 773 0- Ecological Research Springer Japan 28/2(2013-03-01), 151-158 0912-3814 28:2<151 2013 28 11284 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer