Leaf-litter Entomofauna as a Parameter to Evaluate Areas Under Ecological Restoration

ABSTRACT The aim of this study was to characterize the leaf-litter entomofauna in degraded areas under restoration process with different restoration techniques, using the native forest as a reference and ecological indexes as parameters to select bioindicator groups. The study was conducted at “Serra do Itajaí” National Park (PNSI). The survey was conducted from winter/2014 to autumn/2016. The characterization of sampled communities was performed using identification, order, families and faunal indexes such as frequency, constancy and dominance. Overall, 11,241 insects from 57 taxonomic groups were collected in pitfall traps. The native forest showed the greatest richness observed. Groups classified as frequent, constant and dominant in all environments were the Formicidae family and Diptera Order. Significant differences were observed in the frequencies of Ptiliidae, Staphylinidae and Cicadellidae families and also Diptera Order. Coleoptera Ptiliidae, Staphylinidae families and Scolytinae subfamily showed potential as bioindicators of environmental quality at PNSI

AVALIAÇÃO DO USO DE IMIDACLOPRID NO CONTROLE DE Acromyrmex spp. (HYMENOPTERA: FORMICIDAE) EM PLANTIO DE Pinus taeda

Este trabalho teve o objetivo de avaliar a utilização do ingrediente ativo imidacloprid, aplicado em diferentes dosagens, por meio de gel condicionador de solo, em mudas de Pinus taeda L. (Pinaceae) recém-plantadas. O experimento foi instalado em uma das áreas da Empresa Celulose Irani S.A., no município de Vargem Bonita, SC, com desenho experimental em blocos ao acaso com 5 tratamentos e 8 repetições. As avaliações foram realizadas aos 25, 56 e 81 dias após a instalação do experimento. A análise estatística mostrou não haver diferença significativa entre os tratamentos. A presença da APP próxima ao experimento influenciou significativamente nos resultados. A intensidade de dano após três avaliações (81 dias) foi de 4,06%, resultado este promissor para o controle de quenquéns (Acromyrmex spp.) com a metodologia proposta.Palavras-chave: Controle químico; formigas cortadeiras; avaliação de dano. AbstractEvaluation of imidacloprid usage in control of Acromyrmex spp. in Pinus taeda planting. This research aimed to evaluate usage of active ingredient imidacloprid in different dosages, applied as gel soil conditioner in seedlings of Pinus taeda L. (Pinaceae) newly planted. The experiment was installed in one area of the company Celulose Irani S. A., at Vargem Bonita city, Santa Catarina State. The experimental design was randomized blocks with five treatments and 8 replicates. Evaluations were performed at 25, 56 and 81 days after the experiment beginning. The presence of Permanent Preservation Areas (APP) near the experimental area significantly influenced the outcome. The intensity of damage after three assessments (81 days) was 4.06%, a promising result for control leaf-cutting ants (Acromyrmex spp.) with the proposed methodology.Keywords: Chemical control; leaf-cutting ants; damage assessment.AbstractThis research aimed to evaluate usage of active ingredient imidacloprid in different dosages, applied as gel soil conditioner in seedlings of Pinus taeda L. (Pinaceae) newly planted. The experiment was installed in one area of the company Celulose Irani S. A., at Vargem Bonita city, Santa Catarina State. The experimental design was randomized blocks with five treatments and 8 replicates. Evaluations were performed at 25, 56 and 81 days after the experiment beginning. The presence of Permanent Preservation Areas (APP) near the experimental area significantly influenced the outcome. The intensity of damage after three assessments (81 days) was 4.06%, a promising result for control leaf-cutting ants (Acromyrmex spp.) with the proposed methodology.Keywords: Chemical control; leaf-cutting ants; damage assessment