Coswosk J A, Ferreira R A, Soares E D G, Faria L R R
Depto de Ciências Agrárias e Biológicas, Centro Universitário Norte do Espírito Santo, Univ Federal do Espírito Santo, São Mateus, ES, Brasil.
Programa de Pós-Graduação em Biodiversidade Tropical (PPGBN/CEUNES/UFES), São Mateus, ES, Brasil.
Neotrop Entomol. 2018 Aug;47(4):447-456. doi: 10.1007/s13744-017-0533-z. Epub 2017 May 24.
Euglossine fauna of a large remnant of Brazilian Atlantic forest in eastern Brazil (Reserva Natural Vale) was assessed along an edge-forest gradient towards the interior of the fragment. To test the hypotheses that the structure of assemblages of orchid bees varies along this gradient, the following predictions were evaluated: (i) species richness is positively related to distance from the forest edge, (ii) species diversity is positively related to distance from the edge, (iii) the relative abundance of species associated with forest edge and/or open areas is inversely related to the distance from edge, and (iv) relative abundance of forest-related species is positively related to distance from the edge. A total of 2264 bees of 25 species was assessed at five distances from the edge: 0 m (the edge itself), 100 m, 500 m, 1000 m and 1500 m. Data suggested the existence of an edge-interior gradient for euglossine bees regarding species diversity and composition (considering the relative abundance of edge and forest-related species as a proxy for species composition) but not species richness.
沿着巴西东部一片大西洋森林大型残留地（瓦尔自然保护区）的边缘至森林内部的梯度，对其兰花蜜蜂动物群落进行了评估。为了检验兰花蜜蜂群落结构沿此梯度变化的假设，对以下预测进行了评估：（i）物种丰富度与距森林边缘的距离呈正相关，（ii）物种多样性与距边缘的距离呈正相关，（iii）与森林边缘和/或开阔区域相关的物种的相对丰度与距边缘的距离呈负相关，以及（iv）与森林相关的物种的相对丰度与距边缘的距离呈正相关。在距边缘五个距离处（0米（边缘本身）、100米、500米、1000米和1500米）共评估了25种2264只蜜蜂。数据表明，就物种多样性和组成而言（将边缘和与森林相关物种的相对丰度作为物种组成的代表），兰花蜜蜂存在边缘-内部梯度，但物种丰富度不存在。
