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Journal of Entomology
  Year: 2008 | Volume: 5 | Issue: 6 | Page No.: 369-380
DOI: 10.3923/je.2008.369.380
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Spatio-Temporal Trends of Insect Communities in Southern Brazil

R. Riedel, R.C. Marinoni and N. Martins-Opolis

In this study, insect seasonality using Malaise traps at eight stations was investigated from abundance collections taken between August 1986 and July 1988 in four climatic regions and one transitional region of Paraná State, Southern Brazil. Temperature and humidity were also measured to represent environmental conditions at the eight stations. One station was located in the coastal region, one in the coastal mountain range, one in the first and third plateaus and three stations were located in the second plateau. All insects were counted and identified to order. Randomization-based techniques were used to assess insect abundance variation by season for the nine most abundant taxa. An Analysis of Similarity (ANOSIM) using stations and seasons as factors and a non-metric multidimensional scaling (NMDS) to assess the 2-D projection of station along axes of abundance were used to assess insect community dissimilarities. A Mantels test assessed correlations between the abundance similarity matrix and the matrix for the environmental factors. Of the most common orders, the most abundant was Diptera, followed by Hymenoptera, Lepidoptera, Collembola, Homoptera, Coleoptera, Psocoptera, Orthoptera and Hemiptera. Insect orders were generally most abundant during the spring and summer, but least abundant during the winter. Following ANOSIM analysis, station location and season best explained variations in abundance. The NMDS analysis found that the coastal station differed most from all the other stations. Humidity was positively correlated with insect abundance.
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How to cite this article:

R. Riedel, R.C. Marinoni and N. Martins-Opolis, 2008. Spatio-Temporal Trends of Insect Communities in Southern Brazil. Journal of Entomology, 5: 369-380.

DOI: 10.3923/je.2008.369.380






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