Araújo Maria Aparecida de Moura, da Rocha Antônio Elielson Sousa, Miranda Izildinha de Souza, Barbosa Reinaldo Imbrozio
Universidade Federal de Roraima, Boa Vista - Roraima, Brazil.
Museu Paraense Emílio Goeldi, Belém - Pará, Brazil.
Biodivers Data J. 2017 Jul 26(5):e13829. doi: 10.3897/BDJ.5.e13829. eCollection 2017.
Studies on plant communities in the Amazon have reported that different hydro-edaphic conditions can affect the richness and the species composition of different ecosystems. However, this aspect is poorly known in the different savanna habitats. Understanding how populations and plant communities are distributed in these open vegetation areas is important to improve the knowledge about which environmental variables influence the occurrence and diversity of plants in this type of regional ecosystem. Thus, this study investigated the richness and composition of plant species in two savanna areas of the northern Brazilian Amazonia, using the coverage (%) of the different life forms observed under different hydro-edaphic conditions as a structural reference.
We report 128 plant species classified in 34 botanical families distributed in three savanna habitats with different levels of hydro-edaphic restrictions. In this study, the habitats are conceptually presented and they integrate environmental information (edaphic factors and drainage type), which determines differences between floristic composition, species richness and coverage (%) of plant life forms.
关于亚马逊地区植物群落的研究报告称，不同的水文土壤条件会影响不同生态系统的丰富度和物种组成。然而，在不同的稀树草原栖息地，这方面的情况却鲜为人知。了解种群和植物群落在这些开阔植被区域的分布情况，对于增进我们对哪些环境变量影响这类区域生态系统中植物的出现和多样性的认识非常重要。因此，本研究以不同水文土壤条件下观察到的不同生活型的覆盖度（%）为结构参考，调查了巴西北部亚马逊地区两个稀树草原地区的植物物种丰富度和组成。
我们报告了128种植物，它们分属于34个植物科，分布在三个具有不同程度水文土壤限制的稀树草原栖息地。在本研究中，对栖息地进行了概念性描述，它们整合了环境信息（土壤因素和排水类型），这些信息决定了植物区系组成、物种丰富度和植物生活型覆盖度（%）之间的差异。
