Abstract
The use of native species’ stem cuttings in riparian forests disturbed by silting could be a promising low-tech alternative for restoration practitioners in riverscape rehabilitation. In this study, we evaluated the vegetative propagation of Amazonian native plants (Buchenavia parviflora, Euterpe oleracea, Ficus insipida and Socratea exorrhiza) with the addition of a bio-fertilizer, and humic and fulvic acids in soil disturbed by human-induced silting. We found that F. insipida and B. parviflora were able to grow and showed high survival percentage with the development of leaves, buds, and roots; even in nutrient deficient and clayey soils. We also found that the frequency of application and the concentration of the organic additives did not show significant influence on plants’ development. Thus, advance in situ tests with both species could be an interesting step to contribute to riverine ecosystems restoration practices.
Highlights
AND OBJECTIVESRiverscape aggradation by heavy loads of thin particles due to land use is an enormous challenge that riverine ecosystems are facing worldwide
We evaluated the vegetative propagation of Amazonian native plants (Buchenavia parviflora, Euterpe oleracea, Ficus insipida and Socratea exorrhiza) with the addition of a bio-fertilizer, and humic and fulvic acids in soil disturbed by human-induced silting
The species F. insipida showed a quick development of its roots extension, higher than B. parviflora, contrasting with the initial differences found on their stock plants, where B. parviflora showed more leaves and longer root system on the same stage of development as F. insipida
Summary
Riverscape aggradation by heavy loads of thin particles due to land use is an enormous challenge that riverine ecosystems are facing worldwide. This challenge is specially hard in areas of the Amazon forest rich in mineral resources (Bryant & Büscher, 2015; Lobo et al, 2018). The use of cuttings of native species for vegetative propagation could be a promising low-tech alternative for restoration practitioners in riverscape rehabilitation since this technique could overcome the thin particles layer and be adapted to specific local conditions (Dias et al, 2012; EMBRAPA, 2002; Ferrari, Grossi & Wendling, 2004; Oliveira et al, 2001). The cuttings can reduce the impact of rain and erosion on the soil, decrease the runoff velocity and magnitude and increase water infiltration and soil cohesion (Durlo & Sutili, 2012)
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