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Distribution patterns of Passiflora L. (Passifloraceae s.s.) in the Serra da Mantiqueira, Southeast Brazil
Brazilian Journal of Botany ( IF 1.6 ) Pub Date : 2020-10-20 , DOI: 10.1007/s40415-020-00665-w
Andreza Magro Moraes , Michaele Alvim Milward-de-Azevedo , Luiz Menini Neto , Ana Paula Gelli de Faria

Passiflora L. is the most representative genus of Passifloraceae. In Brazil, its species are widely distributed through phytogeographic domains and altitudinal gradients, including the Atlantic montane forests of the Southeast region. In these forest remnants, expressive species richness has been found. The aim of this work was to evaluate the distribution patterns and status conservation of Passiflora species in Serra da Mantiqueira (SM), a mountain range located in southeastern Brazil that stands out for its high biological diversity. We obtained data on species distribution through collections in the field, herbaria collections and compiled online databases, which were plotted on shapefile overlay maps. Species richness, collection effort and similarity among grid squares were analyzed for the taxa recorded. To evaluate distribution patterns by altitudinal gradient, we employed a similarity analysis by altitude class and a test of significance. Considering the states that encompass the SM, Minas Gerais showed the highest Passiflora richness. On the other hand, grid square 13, located in the mountainous region of Espirito Santo state, concentrated the greatest species richness. Similarity analysis between grid squares pointed to the Septentrional area of SM having the most diverse floristic composition. We observed the highest richness and occurrence record between 500 and 1500 m. A gradual change in species composition occurred along the altitudinal gradients, with decline in richness from 1000 m. Around 85% of the species were recorded outside protected areas, reinforcing the need for actions for their conservation through the expansion or creation of conservation units.

中文翻译:

Passiflora L. (Passifloraceae ss) 在巴西东南部 Serra da Mantiqueira 的分布模式

Passiflora L.是西番莲科最具代表性的属。在巴西,其物种广泛分布于植物地理领域和海拔梯度,包括东南地区的大西洋山地森林。在这些森林遗迹中,发现了富有表现力的物种丰富性。这项工作的目的是评估 Serra da Mantiqueira (SM) 中西番莲物种的分布模式和保护状况,该山脉位于巴西东南部,以其高度的生物多样性而著称。我们通过野外收集、植物标本收集和编译的在线数据库获得了物种分布数据,这些数据绘制在 shapefile 覆盖图上。分析了记录的分类群的物种丰富度、收集工作量和网格方块之间的相似性。为了通过海拔梯度评估分布模式,我们采用了海拔等级的相似性分析和显着性检验。考虑到 SM 所在的州,米纳斯吉拉斯州的西番莲丰富度最高。另一方面,位于圣埃斯皮里图州山区的格子广场 13 集中了最大的物种丰富度。网格方块之间的相似性分析指出 SM 的 Septentrional 区域具有最多样化的植物区系组成。我们在 500 到 1500 m 之间观察到最高的丰富度和发生记录。物种组成沿海拔梯度逐渐发生变化,丰富度从 1000 米开始下降。大约 85% 的物种记录在保护区之外,
更新日期:2020-10-20
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