Population Biology of Palm Heart (Euterpe edulis Martius–Arecaceae) in Managed Landscape Units in Southern Brazil. The use of natural areas throughout history has created landscape mosaics. The landscape units assessed in this study on Euterpe edulis populations in southern Brazil consisted of secondary forests, rural homegardens, and sites inside a protected area (PA). Our goal was to compare the level of conservation of E. edulis populations in three landscape units in order to verify the influence of management practices. Twelve homegardens, four areas in secondary forests in rural properties, and several areas in a sustainable use PA were assessed. Population structure differed among the three groups of landscape units. The population density of E. edulis was higher in smaller size classes (seedling, young I) in the PA and in larger size classes (reproductive) in homegardens, whereas both situations occurred in secondary forests. Genetic divergence varied 0.001 and 0.0023 between landscape groups. The highest variation in genetic diversity indexes was recorded in homegardens, with the presence of alleles that were not found in the protected area. Genetic diversity indexes varied less in the protected area, while the average values were higher in secondary forests. We therefore concluded that the sites assessed outside protected areas also contribute to the conservation of this palm species.

巴西南部受管理的景观单元中棕榈心（Euterpe edulis Martius–Arecaceae）的种群生物学。整个历史过程中自然区域的使用创造了景观马赛克。在这项研究中，对巴西南部的Euterpe edulis种群进行评估的景观单位包括次生林，农村花园和保护区（PA）内的场所。我们的目标是比较大肠埃希氏菌的保存水平为了验证管理实践的影响，将三个景观单元的人口进行了比较。评估了十二个花园，农村地区次生林中的四个区域以及可持续利用保护区中的几个区域。三类景观单元之间的人口结构有所不同。食用大肠埃希氏菌的种群密度在宾夕法尼亚州，较小尺寸的树种（幼苗，幼I）较高，而在较大规模的树种（生殖）中，则较高，而两种情况都发生在次生林中。景观群之间的遗传差异在0.001和0.0023之间变化。遗传多样性指数的最高变异记录在家庭花园中，其中存在在保护区中未发现的等位基因。保护区的遗传多样性指数变化较小，而次生林的平均值较高。因此，我们得出的结论是，在保护区之外评估的地点也有助于保护该棕榈树种。