Insects and spiders on Acacia mangium como bioindicadores na recuperacao de area tropical degradada

Acacia mangium is a pioneer species with fast growth and frequently used in the recovery of degraded areas. The objectives were to evaluate insects and spiders, their ecological indices and interactions on A. mangium saplings in a tropical degraded area in recovering process. The experimental design was completely randomized with 24 replications, with treatments represented by the first and second years after A. mangium seedling planted. Numbers of leaves/branch, branches/sapling, and ground cover by A. mangium saplings, Hemiptera: Phenacoccus sp. and Pachycoris torridus; Hymenoptera: Tetragonisca angustula and Trigona spinipes, Brachymyrmex sp., Camponotus sp. and Cephalotes sp.; Blattodea: Nasutitermes sp. and Neuroptera: Chrysoperla sp.; abundance, species richness of pollinating insects, tending ants, and the abundance of Sternorrhyncha predators were greatest in the second year after planting. Numbers of Hemiptera: Aethalium reticulatum, Hymenoptera: Camponotus sp., Cephalotes sp., Polybia sp., T. angustula, T. spinipes, tending ants, pollinating insects, Sternorrhyncha predators and species richness of tending ants were highest on A. mangium saplings with greatest numbers of leaves or branches. The increase in the population of arthropods with ground cover by A. mangium saplings age increase indicates the positive impact by this plant on the recovery process of degraded areas. Keywords: arthropods, diversity, Formicidae, pollinating insects, ecological interactions. Acacia mangium e uma especie pioneira, de rapido crescimento e utilizada na recuperacao de areas degradadas. Os objetivos foram avaliar insetos e aranhas, seus indices ecologicos e interacoes com plantas de A. mangium em area tropical degradada em processo de recuperacao. O delineamento experimental foi inteiramente casualizado com 24 repeticoes, com os tratamentos representados pelos primeiro e segundo anos apos a plantio de A. mangium. Os numeros de folhas/galhos, galhos/plantas e cobertura do solo por plantas de A. mangium, de Hemiptera: Phenacoccus sp. e Pachycoris torridus; Hymenoptera: Tetragonisca angustula e Trigona spinipes, Brachymyrmex sp., Camponotus sp. e Cephalotes sp.; Blattodea: Nasutitermes sp. e Neuroptera: Chrysoperla sp.; a abundancia, riqueza de especies de insetos polinizadores, formigas cuidadoras e a abundancia de predadores de Sternorrhyncha foram maiores no segundo ano apos o plantio. Os numeros de Hemiptera: Aethalium reticulatum, Hymenoptera: Camponotus sp., Ce