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| Format: | Artículo científico |
| Language: | en |
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Universidad de Costa Rica
2015
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| Online Access: | https://www.redalyc.org/articulo.oa?id=44939781024 https://www.redalyc.org/journal/449/44939781024/ https://www.redalyc.org/journal/449/44939781024/html/ https://www.redalyc.org/journal/449/44939781024/44939781024.epub https://www.redalyc.org/journal/449/44939781024/movil |
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Table of Contents:
- Morphotype-based characterization of arbuscular mycorrhizal fungal communities in a restored tropical dry forest, Margarita island-Venezuela Laurie Fajardo Milagros Lovera Pauline Arrindell Victor Hugo Aguilar Zamira Hasmy Gisela Cuenca Biología naturalsuccession tropical dry forest ecological restoration mycorrhizal colonization Srbuscular mycorrhizal fungi richness The mycorrhizal component of revegetated areas after ecological restoration or rehabilitation in aridand semiarid tropical areas has been scarcely assessed, particularly those made after mining disturbance. Weevaluated and compared the presence of arbuscular mycorrhizal fungi of a small area of restored tropical dry for-est destroyed by sand extraction, with a non-restored area of similar age, at the peninsula of Macanao, MargaritaIsland (Venezuela). Our study was undertaken in 2009, four years after planting, and the mycorrhizal status wasevaluated in four restored plots (8 x 12.5 m) (two were previously treated with hydrogel (R2 and R2’), and twowere left untreated (R1 and R1’), and four non-restored plots of similar size (NR1 and NR1’ with graminoidphysiognomy with some scattered shrubs; and NR2 and NR2’, with a more species rich plant community).Apparently the restoration management promoted higher arbuscular mycorrhizal fungi (AMF) species richnessand diversity, particularly in restored soils where the hydrogel was added (R2 treatment). Soil of the NR1 treat-ment (with a higher herbaceous component) showed the highest spore density, compared to samples of soilsunder the other treatments. Considering species composition,Claroideoglomus etunicatumandRhizophagusintraradiceswere found in all treatments; besides,Diversispora spurcaandFunneliformis geosporumwere onlyfound in non-restored plots, while members of the Gigasporaceae (a family associated with little disturbed sites)were commonly observed in the plots with restored soils. Mycorrhizal colonization was similar in the restoredand non-restored areas, being a less sensitive indicator of the ecosystem recovery. The trend of higher richnessand diversity of AMF in the restored plot with hydrogel suggests that this management strategy contributes toaccelerate the natural regeneration in those ecosystems where water plays an essential role. Rev. Biol. Trop. 63(3): 859-870. Epub 2015 September 01. 2015 artículo científico 0034-7744 https://www.redalyc.org/articulo.oa?id=44939781024 https://www.redalyc.org/journal/449/44939781024/ https://www.redalyc.org/journal/449/44939781024/html/ https://www.redalyc.org/journal/449/44939781024/44939781024.epub https://www.redalyc.org/journal/449/44939781024/movil en http://www.redalyc.org/revista.oa?id=449 Revista de Biología Tropical application/pdf Universidad de Costa Rica Revista de Biología Tropical (Costa Rica) Num.3 Vol.63