BIODIVERSITY OF BEETLES FAUNA IN AGRICULTURAL ENVIRONMENTS FROM NORTHWESTERN ALGERIA

FRESENIUS ENVIRONMENTAL BULLETIN(2022)

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摘要
Beetles provide valuable ecosystem services as biological pest control and soil fertilization. However, their community structure has not been completely elucidated. The current study was performed to make specific inventories of beetles in agricultural environments, provide fundamental information on their community structure and evaluate their diversity based on the seasonal climate of Northwestern Algeria. Regular sampling of beetle specimens was done by using the Barber pitfall traps and the yellow traps in four agroecosystems: one cereal field (CF), one citrus orchard (CO) and two potato fields (PT1 and PT2). A total of 205 species, belonging to 29 families, were recorded from the four studied environments. Tenebrionidae, carabidae and Scarabeidae were the most dominant families in terms of individuals and species. However, the Shannon-Wiener index and equitability presented their highest values in the CF (H'=3.63 and E=0.76). The biggest qualitative and quantitative similarities were recorded between the faunas of PT1 and PT2(5=0.57; J=0.40). The chi-squared test showed that the family abundances were dependent of the environments. The species number rates differed significantly among the seasons in the four studied environments. An important taxonomic diversity of the beetle community was found, which is highly related to environmental variables.
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关键词
Agricultural environments, Beetles, Biodiversity, Northwestern Algeria
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