Would contrasting abiotic factors affect reproductive phenology of <i>Hancornia speciosa</i> in Northeastern Brazil?
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<i>Hancornia speciosa</i> is a widespread species that occurs on poor sandy soils of South America, especially in Brazil, where it is known as “mangabeira”. In addition to being avidly sought after by the fauna, its fruits represent an important resource for extractivism. This study aimed to understand reproductive phenodynamics of <i>H. speciosa</i> growing inland and by the coastline areas, where climatic aspects drastically differ. Circular statistics showed low to moderate seasonality. Although the phenophases manifested in the same seasons, there was a 25–45 days advance in the inland populations average dates that may be a conserved response to the recurrent water deficit compared to the coastline area. Generalized Linear Models indicate that photoperiod and monthly mean temperature were the most influential variables on the intensity of phenophase expression. There was no significant difference in the intensity of flower and ripe fruit between the two regions, despite the differences among rates of accumulated monthly precipitation, suggesting that physiological adaptations allow both populations to maintain an equivalent reproduction rate. In addition to contributing to plant ecology research, this study also offers support to extractive communities by providing arguments to help them engage in discussions about anthropogenic impacts on the sustainable management of <i>H. speciosa</i>.
美丽汉考尼亚树（Hancornia speciosa）是一个分布广泛的物种，可生长在南美洲贫瘠的沙质土壤中，尤以巴西为甚，该物种在巴西被称为“曼加贝拉（mangabeira）”。除了深受动物类群的青睐外，其果实亦是野生资源采集业的重要依托。本研究旨在探究生长在内陆与海岸带的美丽汉考尼亚树的生殖物候动态，两类区域的气候特征存在显著差异。循环统计分析结果显示，该物候具有低至中等程度的季节性。尽管两类区域的物候期均出现在相同季节，但内陆种群的平均物候期较海岸带种群提前了25至45天，这或许是相较于海岸带种群，内陆种群对周期性缺水的保守性适应响应。广义线性模型结果表明，光周期与月均温是影响物候期表达强度的最关键变量。尽管两地的月累积降水量存在显著差异，但两类区域的开花强度与成熟果结实强度并无显著不同，这表明生理适应使得两个种群能够维持相当的生殖速率。本研究不仅为植物生态学研究贡献了新的科学依据，还通过提供相关论据，助力野生资源采集社区参与到关于人为活动对美丽汉考尼亚树可持续管理的影响的讨论中，为其提供支持。
