Abundance and stratification of soil macroarthropods in a Caatinga Forest in Northeast Brazil

Brazilian Journal of Biology = Revista Brasleira De Biologia
Virgínia F P AraújoA Vasconcellos

Abstract

In arid and semiarid environments, seasonality usually exerts a strong influence on the composition and dynamics of the soil community. The soil macroarthropods were studied in a Caatinga forest located in the Reserva Particular do Patrimônio Natural (RPPN) Fazenda Almas, São José dos Cordeiros, Paraíba, Brazil. Samples were collected during the dry and rainy seasons following the method proposed by the Tropical Soil Biology and Fertility Program (TSBF), with minor modifications. At each station, 15 soil blocks (20 × 20 × 30 cm: 12 L) were extracted and divided into three layers: A (0-10 cm), B (10-20 cm), and C (20-30 cm). In the rainy and dry seasons 1,306 ± 543(se) and 458 ± 212 ind.m-2 macroarthropods were found, respectively, with 35 and 18 respective taxa recorded. The abundance of individuals and taxa were significantly higher in the rainy season. Isoptera (57.8%) was the most abundant taxon, followed by Hymenoptera: Formicidae (17.2%), Coleoptera larvae (7.3%), and Araneae (3.5%). In the rainy season, abundance in layer A (576 ± 138 ind.m-2) was significantly higher than that of layer C (117 ± 64 ind.m-2), but was not different from layer B (613 ± 480 ind.m-2). There was also no difference between the layer B and C abun...Continue Reading

References

Mar 28, 2003·Brazilian Journal of Biology = Revista Brasleira De Biologia·A M Santos, M Tabarelli
Oct 4, 2008·Brazilian Journal of Biology = Revista Brasleira De Biologia·M W ValentiM A Batalha

Citations

Dec 1, 2017·Brazilian Journal of Biology = Revista Brasleira De Biologia·N T AmazonasO A Valsechi
Apr 12, 2018·Brazilian Journal of Biology = Revista Brasleira De Biologia·L A P L NunesC H A Matos-Filho
Sep 3, 2020·Brazilian Journal of Biology = Revista Brasleira De Biologia·L A P L NunesL R Barbosa

Related Concepts

Metazoa
Arthropods
Underpopulation
Neomalthusianism
Seasonal Variation
Compost
Trees (plant)
Habitat
Ants
Environment

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