Beta Diversity along an Elevational Gradient at the Pico da Neblina (Brazil): Is Spider (Arachnida-Araneae) Community Composition Congruent with the Guayana Region Elevational Zonation?

Beta diversity is usually high along elevational gradients. We studied a spider community at the Pico da Neblina (Brazil), an Amazonian mountain which one of southern components Guayana region. sampled six elevations and investigated if beta patterns correspond to division proposed for region, between lowlands (up 500 m), uplands (500 m 1500 highlands (>1500 m). Patterns dominance increased with elevation gradient, especially two highest elevations, indicating that changes in composition may be accompanied by species abundance distribution. recorded was very high, but pattern observed not accordance elevationaldivision While indeed harbored different fauna, three lowest elevationshad similar compositions, extends into zone. Other measures compositional change, such as similarity indices indicator analysis, also support this pattern. Our results, addition revision literature, confirm endemism rates montane communities, we stress importance protecting those environments, considering climate crisis.