Resumo

CHAVEZ-SUAREZ, Licet; RODRIGUEZ-GARCIA, Idalmis  e  ALVAREZ-FONSECA, Alexander. Ecological indices of the edaphic macrofauna in five grasslands of Granma province, Cuba. Pastos y Forrajes [online]. 2024, vol.47  Epub 28-Dez-2024. ISSN 2078-8452.

Objective: To determine the ecological indexes of the edaphic macrofauna in five agroecosystems of grasslands in Granma province, Cuba.

Materials and Methods: Sampling was carried out twice a year: rainy and dry season, from July, 2014 to March, 2017. The edaphic macrofauna was collected according to the methodology proposed by the Tropical Soil Biology and Fertility (TSBF) program. Ecological indices species richness, Shannon-Wiener diversity index (H’), Simpson index (λ) Berguer-Parker dominance index (d) and community coefficient were calculated.

Results: The richness of taxonomic units was variable in the evaluated periods and agroecosystems. In all agroecosystems, the order with the highest number of taxonomic units was Hymenoptera with 12 units in the Pasture Station. It was followed by El Triángulo and Ojo de agua, with 11 and 10, respectively. It was not possible to establish the pattern of abundance of edaphic macrofauna in either climate period, except in the Ojo de agua and Pasture Station pastures, where this variable was higher in the dry season than in the rainy season. In the dry period of the second year, there was greater macrofaunal diversity than in the rainy period in all pastures. The highest similarity was recorded in the Ojo de agua and El Progreso pastures (0,63) and with the Pasture Station (0,60).

Conclusions: In the studied grassland agroecosystems, the ecological indices of edaphic macrofauna showed heterogeneous performance in the rainy and dry seasons.

Palavras-chave : biodiversity; soil; rangeland management.

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