The Pantanal biome has a great variety of habitats where plant species are distributed according to their particularities. This study aimed at evaluating the spatial distribution of arboreal/shrub vegetation in areas of single specie dominance Erythrina fusca forests. An aggregation test (K(t)) for E. fusca and spatial dependence tests (K(12)) between E. fusca and Calophyllum brasiliense, as well as Alchornea discolor and Banara arguta were performed. The correlation of the distance from the beginning of the plots (riverbank) to the abundance of individuals was tested, and finally, the Kernel density was estimated. We found that E. fusca is randomly distributed throughout the area, that the distribution of C. brasiliense and A. discolor is dependent on E. fusca, and that of B. arguta is not. The correlation analysis pointed to a decrease in the abundance of the community from the riverbank to the interior of the island, with a smaller reduction in the population of E. fusca. The density was higher in the regions close to the river. In addition, sites with a high concentration of individuals close to the elevations created by the roots of E. fusca were verified. The distribution of individuals was related to the flood pulse and the adaptive processes of plant establishment, where the flooding selects the species most tolerant to this type of environment, and the formation of higher microrelief in the landscape can increase the dispersion of the species. This points out that any disturbance that may occur in the flood pulse will change the environmental balance.

中文翻译：

---

赤藓单种优势林的空间分布。巴西马托格罗索州潘塔纳尔市Taiamã生态站

潘塔纳尔生物群系拥有多种生境，根据物种的特殊性分布着植物物种。这项研究的目的是评估单一物种优势赤藓森林中树木/灌木植被的空间分布。聚合试验（K（t））的用于E. fusca的之间和空间相关性测试（K（12））E. fusca的和红厚brasiliense，以及Alchornea变色和Banara软枣进行。测试了从图的开始（河岸）到个人数量的距离的相关性，最后，估计了内核密度。我们发现大肠埃希菌在整个区域中是随机分布的，而巴西柔梭菌和变色曲霉的分布取决于E. fusca，而B. arguta则不。相关分析指出，从河岸到岛屿内部的群落丰富度下降，而E. fusca的种群减少幅度较小。靠近河流的地区密度较高。此外，个体集中的地点接近大肠埃希氏菌根产生的海拔经过验证。个体的分布与洪水脉动和植物建立的适应性过程有关，其中洪水选择了最能耐受这种环境的物种，景观中较高的微浮雕的形成可以增加物种的分散。这指出，洪水脉冲中可能发生的任何干扰都会改变环境平衡。