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Arbuscular mycorrhizal fungi associated with the babassu palm (Attalea speciosa) in the eastern periphery of Amazonia, Brazil Acta Amazonica
NOBRE,Camila Pinheiro; COSTA,Marlon Gomes da; GOTO,Bruno Tomio; GEHRING,Christoph.
ABSTRACT Babassu, Attalea speciosa (Arecaceae) is a ruderal palm native to Amazonia, which turned dominant in frequently burned lands throughout the ‘arc of deforestation’ and other degraded lands, in extreme cases attaining complete dominance. This study investigated arbuscular mycorrhizal fungi (AMF) as one possible explanation for the outstanding ecological success of this exceptional palm. We explored the relationships between the babassu palm and native arbuscular mycorrhizal fungi and babassu effects on the AMF richness and mycorrhizal inoculum potential (MIP) in the eastern periphery of Amazonia. For this purpose, we sampled topsoil (0-20 cm) at the onset of the rainy season from a 5-year-old secondary forest regrowth (SEC) area with three levels of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Glomeromycota; Species richness; Humid tropics; Degraded lands.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672018000400321
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Litter decomposition and nutrient release dynamics of leaves and roots of the babassu palm in eastern Amazonia Acta Amazonica
LUZ,Ronildson Lima; LEITE,Márcio Fernandes Alves; ZELARAYÁN,Marcelo Correa; BODDEY,Robert Michael; GEHRING,Christoph.
ABSTRACT The ruderal babassu palm (Attalea speciosa) is expanding on large areas of degraded Amazon landscapes. Decomposition of leaves and roots is in the center of plant:soil interactions. We evaluated decomposition and nutrient concentrations of leaves and fine roots of babassu in comparison with two exotic reference species, Acacia mangium (slow degradability) and Leucaena leucocephala (fast degradability), in a 138-day litterbag assay carried out in secondary forest stands of different age and babassu abundance. We chose 4-mm over 2-mm mesh litterbags based on a pilot study. Babassu leaves degraded slower than leaves of A. mangium and L. leucocephala, and also had lower nitrogen, phosphorus and calcium concentrations in all stages of decomposition. By...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Attalea speciosa; Litter bag; Nutrient concentrations; Ruderal palm; Secondary succession; Soil organic matter.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672020000300213
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