caa a22 4500 469096985 CHVBK 20180323133034.0 cr unu---uuuuu 170328e19920401xx s 000 0 eng 10.1007/BF00317169 doi (NATIONALLICENCE)springer-10.1007/BF00317169 Ackerly D. Department of Organismic and Evolutionary Biology, Harvard University, 02138, Cambridge, MA, USA aut Light, leaf age, and leaf nitrogen concentration in a tropical vine [Elektronische Daten] [D. Ackerly] Summary: Tropical vines in the Araceae family commonly exhibit alternating periods of upward and downward growth, decoupling the usual relationship between decreasing light environment with increasing age among the leaves on a shoot. In this study I examined patterns of light, leaf specific mass, and leaf nitrogen concentration in relation to leaf position, a measure of developmental age, in field collected shoots of Syngonium podophyllum. These data were analyzed to test the hypothesis that nitrogen allocation parallels within-shoot gradients of light availability, regardless of the relationship between light and leaf age. I found that leaf nitrogen concentration, on a mass basis, was weakly correlated with leaf level light environment. However, leaf specific mass, and consequently nitrogen per unit leaf area, were positively correlated with gradients of light within the shoot, and either increased or decreased with leaf age, providing support for the hypothesis that nitrogen allocation parallels gradients of light availability. Springer-Verlag, 1992 Nitrogen allocation nationallicence Leaf age nationallicence Light nationallicence Tropical vine nationallicence Syngonium nationallicence Oecologia Springer-Verlag 89/4(1992-04-01), 596-600 0029-8549 89:4<596 1992 89 442 https://doi.org/10.1007/BF00317169 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00317169 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Ackerly D. Department of Organismic and Evolutionary Biology, Harvard University, 02138, Cambridge, MA, USA aut NATIONALLICENCE 773 0- Oecologia Springer-Verlag 89/4(1992-04-01), 596-600 0029-8549 89:4<596 1992 89 442 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer