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\bibitem{Ziegler_etal2020} Ziegler, C., Dusenge, M. E., Nyirambangutse, B., Zibera, E., Wallin, G., \& Uddling, J. (2020). Contrasting Dependencies of Photosynthetic Capacity on Leaf Nitrogen in Early- and Late-Successional Tropical Montane Tree Species. \textit{Front. Plant Sci.}, \textit{11}, 500479.

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