Pereira, Arthur Prudencio de A.
Santana, Maiele C.
Zagatto, Mauricio R. G.
Brandani, Carolina B.
Verma, Jay P.
Singh, Brajesh K.
Cardoso, Elke J. B. N.
 Univ Sao Paulo, Luiz de Queiroz Coll Agr, Piracicaba - Brazil
 New Mexico State Univ, Coll Agr Consumer & Environm Sci, Clayton Livestock Res Ctr, Las Cruces, NM 88003 - USA
 Western Sydney Univ, Hawkesbury Inst Environm, Sydney, NSW - Australia
 Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing - Peoples R China
 Banaras Hindu Univ, Inst Environm & Sustainable Dev, Varanasi, Uttar Pradesh - India
 Western Sydney Univ, Global Ctr Land Based Innovat, Sydney, NSW - Australia
Total Affiliations: 7
Science of The Total Environment;
MAR 1 2021.
Web of Science Citations:
The fungal community plays an important role in forest ecosystems via the provision of resources to plant nutrition and productivity. However, the ecology of the fungal network and its relationship with phosphorus (P) dynamics remain poorly understood in mixed forest plantations. Here, we analyzed the fungal community using the amplicon sequencing in plantations of pure Eucalyptus grandis, with (E + N) and without N fertilization (E), besides pure Acacia mangium (A), and in a consortium of E. grandis and A. mangium (E + A), at 27 and 39 months after planting. We analyzed chemical, physical and biochemical soil and litter attributes related to P cycling, and the fungal community structure to find out if mixed plantations can increase fungal connections and to identify their role in the P dynamics in the soil-litter system. Soil organic fraction (OF), phosphorus in OF, total-P and acid phosphatase activity were significantly higher in E + A and A treatments regardless of the sampling period. Total N and P, richness, and Shannon diversity of the fungi in the litter was significantly higher in the treatments E + A and A. The fungal community structure in litter differed between treatments and sampling periods, and E + A showed an intermediate structure between the two pure treatments (E) and (A). E + A correlated highly with P dynamics when evaluated by both Pearson and redundancy analyses, particularly in the litter layer. Co-occurrence networks of fungal taxa became simpler in pure E. grandis plantations, where as mixed system (E + A) showed a more connected and complex network. Our findings provide novel evidence that mixed forest plantations promote positive responses in the fungal community connections, which are closely related to P availability in the system, prominently in the litter layer. This indicates that the litter layer represents a specific niche to improve nutrient cycling by fungi in mixed forest ecosystems. (C) 2020 Elsevier B.V. All rights reserved. (AU)