Vertical distribution and diversity of beetles in a stand of Pinus taeda L. (Pinaceae) ; Distribuição vertical e diversidade de coleópteros em povoamento de Pinus taeda L. (Pinaceae)

The flight pattern of insects can be considered an important biological factor in the management of potential pest insects. Thus, this study aimed to verify the preferred flight height of the coleoptera associated with a plantation of Pinus taeda L. belonging to the Forest Research Center, in Santa Maria, Rio Grande do Sul. For this purpose, distributed flight interception traps were installe,corresponding to heights of 0.5; 1.0; 1.5; 2.0; 2.5; 3.0; 3.5; 4.0; 4.5; 5.0; 5.5 and 6.0 meters above the soil surface, with three repetitions and with an interval of 30 meters between repetitions. 570 individuals were collected, distributed in 34 families and 116 species, with the acme population occurring in the beginning of November 2011. The families Cerambycidae, Curculionidae, Trogossitidae and Scarabaeidae presented the greatest abundance. Euetheola humilis (Burmeister, 1847) stood out, with 42 individuals sampled during the collection period (November 2011 to May 2012), predominantly, at heights of 3.5 m, 4.5 m and 5.0 m. No statistical differences were found between the different heights in the flight interception traps and the total abundance of beetles, demonstrating that the insects of the Coleoptera Order do not have a preference for flight height in P. taeda stands. ; O padrão de voo dos insetos pode ser considerado um importante fator biológico no manejo de potenciais insetos-praga. Deste modo, este trabalho objetivou verificar a altura preferencial de voo dos coleópteros associados a um plantio de Pinus taeda L pertencente ao Centro de Pesquisa em Florestas, em Santa Maria, Rio Grande do Sul. Para isto, foram instaladas armadilhas de interceptação de voo distribuídas nas alturas de 0,5; 1,0; 1,5; 2,0; 2,5; 3,0; 3,5; 4,0; 4,5; 5,0; 5,5 e 6,0 metros acima da superfície do solo, com três repetições e com um espaço de 30 metros entre as repetições. Foram coletados 570 indivíduos, distribuídos em 34 famílias e 116 espécies, com o acme populacional no início de novembro de 2011. As famílias Cerambycidae, ...