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The Edge Effect on Plant Diversity and Soil Properties in Abandoned Fields Targeted for Ecological Restoration

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  • Sheunesu Ruwanza

    (Department of Environmental Science, Rhodes University, Grahamstown 6140, South Africa)

Abstract

Changes in biotic and abiotic factors may create opportunities for biodiversity recovery in abandoned agricultural fields. This study examined the natural/old field edge effect on plant diversity and soil properties at Lapalala Wilderness in Limpopo Province, South Africa. Detailed vegetation surveys and soil measurements were conducted in three old fields that share a natural/old field road edge boundary. On each site, three transects, each with four plots (10 × 10 m), located 10 m into the natural area and 10, 30 and 50 m into the old field from the edge, were setup. Plant diversity and composition measurements were conducted on each plot. Soil moisture and total N, C and P were measured at the center of each plot. Results indicate that abundance of some woody species was significantly ( P < 0.001) higher close to the edge than far into the old fields. However, this was not the case for herbs and grasses which did not increase with edge proximity. All measured soil properties were significantly ( P < 0.001) higher close to the edge than far into the old fields. The study concludes that both vegetation and soil properties are influenced by proximity to the edge.

Suggested Citation

  • Sheunesu Ruwanza, 2018. "The Edge Effect on Plant Diversity and Soil Properties in Abandoned Fields Targeted for Ecological Restoration," Sustainability, MDPI, vol. 11(1), pages 1-12, December.
    • Handle: RePEc:gam:jsusta:v:11:y:2018:i:1:p:140-:d:193591
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    References listed on IDEAS

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    1. Dale Blair & Charlie M. Shackleton & Penelope J. Mograbi, 2018. "Cropland Abandonment in South African Smallholder Communal Lands: Land Cover Change (1950–2010) and Farmer Perceptions of Contributing Factors," Land, MDPI, vol. 7(4), pages 1-20, October.
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