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.

ResumoEste 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. Abstract Evaluation 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 leafcutting ants (Acromyrmex spp.) with the proposed methodology. Keywords: Chemical control; leaf-cutting ants; damage assessment. INTRODUÇÃOCaracterísticas como rápido crescimento e boa adaptação às condições edafoclimáticas fizeram das espécies Eucalyptus spp. e Pinus spp. as mais utilizadas em programas de reflorestamento no Brasil. Essas espécies, inicialmente, foram pouco atacadas por insetos-pragas quando introduzidas, principalmente por esses insetos ainda não estarem adaptados às mesmas (RIBEIRO;MENDONÇA, 2004). Entre os insetos considerados pragas em silvicultura, as formigas cortadeiras são apontadas como as mais importantes nos reflorestamentos de eucalipto e pínus, em razão dos prejuízos que causam e de sua vasta ocorrência (ANTUNES; DELLA LUCIA, 1999). No caso das mudas de Pinus taeda L., o

The objective of this study was to evaluate the capacity as bioindicators of litter arthropodofauna in pasture restoration in the Atlantic Forest Biome. Areas of native forest under natural regeneration, and pastures treated with different ecological restoration techniques were evaluated, with pitfall traps. The sampling period was from April/2017 to October/2018, bimonthly. Families Ptiliidae, Staphylinidae, and Leiodidae, species Pheidole cf. sarcina (Formicidae) and Mastigoceras sp. 1 and Szeptyckitheca sp. 1 (Collembola) were indicators of well-conserved areas, whereas families Cicadellidae and Delphacidae, Formicidae species Wasmannia auropunctata (Roger, 1863) and Camponotus melanoticus Emery, 1894 were indicators of degraded areas. From the springtail community, species richness is a metric that can be used as a bioindicator. It was observed that all taxonomic identification levels allowed for the differentiation of the environmental conditions of the sampling areas, with less specific identification levels, such as family, possibly indicating changes in areas under the restoration process.

Insects stand out for their diversity, representativeness, ecological importance, and sensitivity to environmental changes that are affected by anthropogenic changes in natural ecosystems. This study aimed to characterize the leaf litter insect fauna in four different areas that included two native forests and two pastures in Serra do Itajaí National Park. Data were collected from August 2014 to August 2015 from pitfall trap installations. The abundance, richness, diversity, family composition, and functional groups were analyzed. In total, 16,062 individuals were collected that were distributed across 16 orders and 101 families. Abundance, family richness, and diversity were similar among the areas. However, the composition differed, demonstrating that the environments possessed different insect fauna communities based on the composition of families. The Coleoptera order with the Ptiliidae family was more abundant in the native forest, while the Hemiptera (Cercopidae and Cicadellidae) were more abundant in the pasture area. The composition of fungivores and phytophagous fungi differed significantly among the areas. The number of exclusive families and their composition demonstrated a leaf litter insect fauna that was adapted to the environmental conditions and resources available within each environment

O comportamento germinativo das espécies florestais nativas tem exigido atenção no meio científico, principalmente na obtenção de informações referentes às condições ideais de germinação e utilização em ambientes de restauração e recuperação de áreas degradadas. Dessa forma, o presente estudo teve como objetivo avaliar o efeito da idade das árvores matrizes de Vernonanthura discolor (Spreng.) H. Rob. (Asteraceae) sobre o poder germinativo e o índice da velocidade de germinação (IVG) de sementes submetidas a diferentes períodos de armazenamento. Foram selecionadas quatro árvores matrizes para a coleta de sementes, das quais duas de aspecto adultosenil (A1 e A2) e duas de aspecto adulto-jovem (B1 e B2). Foram avaliados o poder germinativo e o IVG com períodos de 30 e 75 dias de armazenamento. Nas sementes armazenadas por 30 dias, o percentual germinativo foi estatisticamente superior para as matrizes A, porém o IVG foi superior nas matrizes B. O experimento apontou que as espécies adulto-senis mostraram melhores condições de germinação, assim como que fatores associados a características fenológicas e maturidade das matrizes podem alterar a taxa germinativa.