SciELO - Scientific Electronic Library Online

 
vol.27 número1Persistencia del efecto del subsolado sobre el movimiento del agua en el suelo en siembra directa: Uso de dos modelos teóricosParámetros químicos y biológicos como indicadores de calidad del suelo en diferentes manejos índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Articulo

Indicadores

  • No hay articulos citadosCitado por SciELO

Links relacionados

  • En proceso de indezaciónCitado por Google
  • No hay articulos similaresSimilares en SciELO
  • En proceso de indezaciónSimilares en Google

Bookmark


Ciencia del suelo

versión On-line ISSN 1850-2067

Resumen

FREDES, Natalia A; MARTINEZ, Pablo A; BERNAVA LABORDE, Verónica  y  OSTERRIETH, Margarita L. Microarthropods as indicators of anthropic disturbance in entisols in a recreational area of Miramar, Argentina. Cienc. suelo [online]. 2009, vol.27, n.1, pp. 89-101. ISSN 1850-2067.

Human trampling in recreational areas causes alterations in the soil surface horizon, partially or totally disrupting soil structure, reducing porosity and modifying the edaphic microenvironment. Soil mesofauna, is a good indicator of this human impact since it inhabits mainly soil surface horizons. We evaluated the changes in edaphic oribatid mite (Acari) and springtail (Collembola) communities sufferering from the impact of human trampling in the recreational area of Vivero Dunícola "Florentino Ameghino" Miramar, in the Province of Buenos Aires, Argentina. Three impact areas were considered: maximum, medium and minimum. Collembola and oribatid were determined to species level. Species richness, diversity and parity by site and horizon were calculated. A correspondence analysis was carried out and an impact index elaborated taking into account the different horizons and species frequencies. Twenty-nine species of oribatid mites and 19 species of Collembola were found. Diversity (H´) was significantly different between the maximum and minimum impact sites. Factorial Correspondence Analysis defined three groups in terms of degree of alteration of the surfacel horizon and pedological characteristics (organic or mineral horizons). The value of the impact index (IIM) in the maximum trampling area was IIM=9 while in that of minimum impact it was IIM < 1. The results support the usefulness of the microarthropod community as an indicator of human impact and their suitability for bioevaluating the state of the study area.

Palabras llave : Soils; Bioevaluation; Oribatid mites; Springtails; Impact index.

        · resumen en Español     · texto en Español     · pdf en Español