Links between plant and fungal communities across a deforestation chronosequence in the Amazon rainforest

Mueller, Rebecca C.; Paula, Fabiana S.; Mirza, Babur S.; Rodrigues, Jorge L. M.; Nüsslein, Klaus; Bohannan, Brendan J. M.

doi:10.1038/ismej.2013.253

Cited by 123 publications

(104 citation statements)

References 18 publications

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“…The bacterial community shifts were more gradual and overlapping, while the fungal communities at different ages were more distinct. This agrees with previous observations that plant symbioses with fungi are more common than with bacteria (16) and that plant community composition has strong influences on the fungal community (17)(18)(19)(20), which has been shown to extend to bulk soil in the form of common mycelial networks (42,43). The specificity with vegetation may explain the distinctness of fungal communities at different chronosequence ages, as the plant community is also experiencing taxonomic shifts from being grass dominated to tree dominated during this time frame (44).…”

Section: Discussionsupporting

confidence: 90%

“…While there are exceptions to these characterizations, on a broad scale, they highlight the potential for functional differences in how each group responds to ecosystem restoration. Furthermore, while both bacteria and fungi form symbiotic relationships with plants, fungal symbionts are more common, occurring in over 85% of all angiosperms (16), and fungi tend to have more specific relationships with plant species (17)(18)(19)(20). Fungi may also be more dispersal limited than bacteria due to their larger sizes (21), and priority effects can have greater influence on fungal communities (22).…”

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confidence: 99%

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Soil Bacterial and Fungal Communities Show Distinct Recovery Patterns during Forest Ecosystem Restoration

Sun

Song

Avera

et al. 2017

Appl Environ Microbiol

201

109

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Bacteria and fungi are important mediators of biogeochemical processes and play essential roles in the establishment of plant communities, which makes knowledge about their recovery after extreme disturbances valuable for understanding ecosystem development. However, broad ecological differences between bacterial and fungal organisms, such as growth rates, stress tolerance, and substrate utilization, suggest they could follow distinct trajectories and show contrasting dynamics during recovery. In this study, we analyzed both the intra-annual variability and decade-scale recovery of bacterial and fungal communities in a chronosequence of reclaimed mined soils using next-generation sequencing to quantify their abundance, richness, ␤-diversity, taxonomic composition, and cooccurrence network properties. Bacterial communities shifted gradually, with overlapping ␤-diversity patterns across chronosequence ages, while shifts in fungal communities were more distinct among different ages. In addition, the magnitude of intra-annual variability in bacterial ␤-diversity was comparable to the changes across decades of chronosequence age, while fungal communities changed minimally across months. Finally, the complexity of bacterial cooccurrence networks increased with chronosequence age, while fungal networks did not show clear age-related trends. We hypothesize that these contrasting dynamics of bacteria and fungi in the chronosequence result from (i) higher growth rates for bacteria, leading to higher intra-annual variability; (ii) higher tolerance to environmental changes for fungi; and (iii) stronger influence of vegetation on fungal communities. IMPORTANCE Both bacteria and fungi play essential roles in ecosystem functions, and information about their recovery after extreme disturbances is important for understanding whole-ecosystem development. Given their many differences in phenotype, phylogeny, and life history, a comparison of different bacterial and fungal recovery patterns improves the understanding of how different components of the soil microbiota respond to ecosystem recovery. In this study, we highlight key differences between soil bacteria and fungi during the restoration of reclaimed mine soils in the form of long-term diversity patterns, intra-annual variability, and potential interaction networks. Cooccurrence networks revealed increasingly complex bacterial community interactions during recovery, in contrast to much simpler and more isolated fungal network patterns. This study compares bacterial and fungal cooccurrence networks and reveals cooccurrences persisting through successional ages.KEYWORDS bacteria, chronosequence, cooccurrence networks, disturbance, fungi, reclaimed mine soils, soil microbiota E cologists have been studying the succession dynamics of plant communities for more than a century (1, 2), and the patterns of changes in plant community composition are used as indicators for the restoration of ecosystems (3-5). However,

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Section: Discussionsupporting

confidence: 90%

mentioning

confidence: 99%

Soil Bacterial and Fungal Communities Show Distinct Recovery Patterns during Forest Ecosystem Restoration

Sun

Song

Avera

et al. 2017

Appl Environ Microbiol

201

109

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“…It should be noted that the latter investigation was carried out on soils of the unvegetated habitat. Because the fungal community was closely related with vegetation (Mueller et al 2014), the aboveground plant community could be an important factor that determines fungal community composition. Taxonomic compositions of fungal community in the Tibetan forest soil were also different from that in the Amazon rainforest soils dominated by Sordariomycetes and Saccharomycetes (Peay et al 2013).…”

Section: Characteristics Of Fungal Community In Typical Forest Soils mentioning

confidence: 99%

“…Forest biomes on the Tibetan Plateau suffered from harsh environmental conditions including strong UV, low temperature and low oxygen content, and the support from the underground communities was especially important in sustaining the biological diversity and ecosystem functions in a scenario of global change Bardgett and van der Putten 2014;Shen et al 2014b). Fungi are recognized as a vital component of the belowground community intimately related with plant communities in a forest (He et al 2005;Mueller et al 2014;Peay et al 2013). Soil fungi play a key role as decomposer to accelerate degradation of soil organic carbon and nitrogen input (McGuire et al 2010;Schneider et al 2012), and they also have a symbiotic relationship with aboveground vegetation, which benefits plant with more resistance against extreme circumstances like oligotrophic or arid habitats (Compant et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Soil pH determines the alpha diversity but not beta diversity of soil fungal community along altitude in a typical Tibetan forest ecosystem

et al. 2015

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Purpose Despite their symbiotic relationship with trees and the vital role as decomposer in forest, soil fungi received limited attention regarding their changes with altitude in forest ecosystems. This study aimed to determine the diversity patterns of soil fungi along an altitudinal gradient on Mt. Shegyla, a typical forest ecosystem on the Tibetan Plateau. Materials and methods High-throughput barcoded pyrosequencing and quantitative PCR approaches were employed to measure the community composition, diversity, and abundance patterns of soil fungal 18S ribosomal RNA (rRNA) gene in 20 samples collected along the altitudinal gradient of Mt. Shegyla. Results and discussion Abundant taxa in the fungal community were Agaricomycetes and Leotiomyceta on Mt. Shegyla. Fungal abundance decreased significantly with increasing altitude. Beta diversity of the fungal community, as measured using weighted UniFrac distance, was significantly related to altitude. Significant correlation was observed between altitude and alpha diversity including richness and phylodiversity, but not with evenness. Network analysis revealed that Ceramothyrium and Clavulina were two important hubs in the community, and an uncultured fungal taxon that previously detected in glacier forefront dominated this network. Distance-based linear model identified soil pH as the dominant driver which significantly related with fungal alpha diversity including richness, phylodiversity, and evenness. However, fungal abundance and the first component of PCoA on weighted UniFrac matrix (beta diversity) did not change significantly with pH. Conclusions These results provided strong evidence that soil pH was the dominant driver for structuring altitudinal alpha diversity pattern but not beta diversity pattern or community abundance of soil fungi in this typical forest on the Tibetan Plateau.

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“…Rodrigues et al (2013), studying in pasture and forest in the Amazon showed a homogenization of microbial communities in response to human activities that was driven by the loss of forest soil bacteria and a net loss of diversity. Mueller et al (2014) sampled the soil microbial and plant community composition across a chronosequence of deforestation in the Amazon and found significant effects of landuse change on fungal community composition, which was more closely correlated to plant community composition than to changes in soil properties. Secondary forests had fungal communities more similar to primary forests than to those in pastures, which suggest that the recuperation of fungal communities after pasture abandonment is dependent upon that of plant diversity.…”

Section: Introductionmentioning

confidence: 99%

Physical, chemical, and biological properties of soil under soybean cultivation and at an adjacent rainforest in Amazonia

Beldini¹,

Oliveira²,

Keller³

et al. 2015

Rev. ambiente água

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Land-use change in the Amazon basin has occurred at an accelerated pace during the last decade, and it is important that the effects induced by these changes on soil properties are better understood. This study investigated the chemical, physical, and biological properties of soil in a field under cultivation of soy and rice, and at an adjacent primary rain forest. Increases in soil bulk density, exchangeable cations and pH were observed in the soy field soil. In the primary forest, soil microbial biomass and basal respiration rates were higher, and the microbial community was metabolically more efficient. The sum of basal respiration across the A, AB and BA horizons on a mass per area basis ranged from 7.31 to 10.05 Mg CO 2 -C ha -1 yr -1 , thus yielding estimates for total soil respiration between 9.6 and 15.5 Mg CO 2 -C ha -1 yr -1 across sites and seasons. These estimates are in good agreement with literature values for Amazonian ecosystems. The estimates of heterotrophic respiration made in this study help to further constrain the estimates of autotrophic soil respiration and will be useful for monitoring the effects of future land-use in Amazonian ecosystems.Keywords: land use change, microbial metabolic quotient, seasonality.Propriedades físicas, químicas, e biológicas de solo sob cultivação de soja e em floresta adjacente na Amazônia RESUMOAs mudanças no uso da terra na bacia Amazônica têm ocorridas num ritmo acelerado durante a última década, e é importante que os efeitos dessas mudanças nos recursos edáficos sejam explicados. Este trabalho teve como objetivo investigar as propriedades físicas, químicas, e biológicas de um solo sob cultivo de soja e arroz, e um solo de floresta primária adjacente. O solo do campo de soja teve aumentos na densidade, cátions trocáveis, e pH. Na floresta primária a biomassa microbiana e a respiração do solo foram maiores, e a comunidade microbiana demonstrou maior eficiência metabólica. A soma da respiração basal nos três horizontes estudados variou entre 7,31 a 10,05 Mg CO 2 -C ha -1 ano -1 , assim dando estimativas de 9,6 a 15,5 Mg CO 2 -C ha -1 ano -1 para a respiração total do solo somada para sítios e épocas de amostragem, valores que estão de acordo com dados reportados na literatura para ecossistemas amazônicos. As estimativas da respiração heterotrófica nesse estudo ajudarão a estreitar as estimativas de respiração autotrófica e serão importantes na determinação dos efeitos de futuras mudanças no uso da terra e no clima em sistemas amazônicos.Palavras-chave: mudança no uso da terra, quociente metabólico, sazonalidade.

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Links between plant and fungal communities across a deforestation chronosequence in the Amazon rainforest

Cited by 123 publications

References 18 publications

Soil Bacterial and Fungal Communities Show Distinct Recovery Patterns during Forest Ecosystem Restoration

Soil Bacterial and Fungal Communities Show Distinct Recovery Patterns during Forest Ecosystem Restoration

Soil pH determines the alpha diversity but not beta diversity of soil fungal community along altitude in a typical Tibetan forest ecosystem

Physical, chemical, and biological properties of soil under soybean cultivation and at an adjacent rainforest in Amazonia

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