Ecophysiological traits of two fruit tree species native to the Atlantic Forest acclimated to open areas and to forest coverage

The main objective of this study was to determine ecophysiological acclimation strategies in guavirá (Campomanesia xanthocarpa Berg.) and sietecapotes (C. guazumifolia (Cambess.) O. Berg.) initial installation as crop for fruit and landscape restoration purposes. We installed orchards under full sun and under the rainforest, and evaluated morpho-physiological acclimation to microenvironments. Guavirá is a species with high plasticity and displays a variety of acclimation responses to survive and grow in contrasting microsites, such as decreasing slenderness, specific leaf area and chlorophyll concentration, and increasing carotenoid concentration and transpiration. Guavirá can then be used to establish orchards, restore deforested areas, and enrich degraded rainforests. In contrast, sietecapotes had very low survival and growth in open areas, but the plants that survived share many of the acclimation strategies with guavirá.

本研究的主要目标在于探究瓜维拉（Campomanesia xanthocarpa Berg.）和西特卡波特（C. guazumifolia (Cambess.) O. Berg.）作为果树及景观恢复用途的初始种植时，其在生态生理上的适应策略。本研究在充分日照及雨林环境下搭建了果园，并对微环境的形态-生理适应进行了评估。瓜维拉作为一种具有高度可塑性的物种，能够展现出多样化的适应反应以在差异显著的微生境中生存与生长，例如减少细长度、比叶面积及叶绿素浓度，同时增加类胡萝卜素浓度和蒸腾作用。瓜维拉随后可用于建立果园、恢复砍伐后的区域以及改善退化的雨林。相对而言，西特卡波特在开阔区域中存活率和生长率极低，但存活的植株与瓜维拉共享许多适应策略。