Driving forces of soil bacterial community structure, diversity, and function in temperate grasslands and forests

Kaiser, Kristin; Wemheuer, Bernd; Korolkow, Vera; Wemheuer, Franziska; Nacke, Heiko; Schöning, Ingo; Schrumpf, Marion; Daniel, Rolf

doi:10.1038/srep33696

Cited by 313 publications

(228 citation statements)

References 56 publications

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“…14.7 % a exploratory studies on forest-soil microorganisms observed a stronger effect of the dominant tree species than of the SMI on the microbial community (Goldmann et al, 2015;Kaiser et al, 2016;Purahong et al, 2014); only one study on litter decaying fungi and bacteria indicated a significant difference between natural and managed beech forests (Purahong et al, 2015). Kaiser et al (2016) discussed that the different tree species influence soil bacteria by shifting the pH in soil; hence, tree species was designated as the main predictor for bacterial community composition. However, the bulk soil pH did not differ significantly between beech and pine forest in Schorfheide-Chorin (Table 1); hence, the algae in BSCs were not affected by this abiotic parameter.…”

Section: Correlation With Smimentioning

confidence: 99%

Algal richness in BSCs in forests under different management intensity with some implications for P cycling

et al. 2018

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Abstract. Biological soil crusts (BSCs) are highly important communities in drylands and disturbed areas worldwide, where the higher vegetation is sparse, with a diverse microalgal community as the key component. They perform important ecological functions, such as stabilization of soil and nutrient enrichment. In temperate regions BSCs are also common, but generally less studied. Changes in land use and land use intensity strongly influence biodiversity per se and ecosystem processes, as can be seen particularly in densely populated regions like Europe. However, systematic studies on the effect of land use gradients, i.e., forest management intensity, on BSCs have been missing up to now. To close this knowledge gap and enhance the understanding of management effects on BSCs from pine and beech forests under different management regimes, key primary producers of these communities (eukaryotic microalgae and cyanobacteria) were studied. Phototrophic microorganisms were identified morphologically and categorized as either coccal taxa, which typically occur in high diversity, or filamentous taxa, which have the potential to initiate BSC formation. In total, 51 algal species were recorded, most of them from the phylum Chlorophyta, followed by Streptophyta and Stramenopiles, and only 1 cyanobacterial taxon. The most abundant crust-initiating filamentous algae were three species of Klebsormidium (Streptophyta), a ubiquitous genus regularly occurring in BSCs because of its broad ecophysiological tolerance. Increasing management intensity in the forests resulted in a higher number of algal species; especially the number of coccal taxa increased. Furthermore, the proportion of inorganic phosphorus showed tendencies towards a negative correlation with the number of algal species. Thus, management of forests has an impact on the diversity of phototrophic organisms in BSCs, which might in turn affect their biogeochemical P cycling.

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Section: Correlation With Smimentioning

confidence: 99%

Algal richness in BSCs in forests under different management intensity with some implications for P cycling

et al. 2018

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“…13 Similar results were reported in a study of bacterial communities in German grassland and forest soils. 14,15 In a more recent study, both bacterial and fungal communities exhibited contrasting beta diversity among two types of European subalpine/alpine grasslands, and both bacterial and fungal communities were influenced by grassland type. 16 However, most of these studies have been conducted in temperate northern hemisphere grasslands and none is directly relevant to the unique and defined biomes of South Africa.…”

Section: Introductionmentioning

confidence: 97%

Arable agriculture changes soil microbial communities in the South African Grassland Biome

Nkuekam¹,

Cowan²,

Valverde³

2018

S. Afr. J. Sci.

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Many studies, mostly in temperate regions of the northern hemisphere, have demonstrated that agricultural practices affect the composition and diversity of soil microbial communities. However, very little is known about the impact of agriculture on the microbial communities in other regions of the world, most particularly on the African continent. In this study, we used MiSeq amplicon sequencing of bacterial 16S rRNA genes and fungal ITS regions to characterise microbial communities in agricultural and natural grassland soils located in the Mpumalanga Province of South Africa. Nine soil chemical parameters were also measured to evaluate the effects of edaphic factors on microbial community diversity. Bacterial and fungal communities were significantly richer and more diverse in natural grassland than in agricultural soils. Microbial taxonomic composition was also significantly different between the two habitat types. The phylum Acidobacteria was significantly more abundant in natural grassland than in agricultural soils, while Actinobacteria and the family Nectriaceae showed the opposite pattern. Soil pH and phosphorus significantly influenced bacterial communities, whereas phosphorus and calcium influenced fungal communities. These findings may be interpreted as a negative impact of land-use change on soil microbial diversity and composition.

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“…Soil texture also strongly affects microbial community compositions, largely through the effects of particle size on nutrients, habitat space, moisture, and redox levels (Kaiser et al, 2016). Molineux et al (2017) showed, the effectiveness and persistence of microbial inocula on green roofs differed according to whether or not the substrate was concrete or brick based.…”

Section: Are Some Growing Media More Conducive To the Maintenance Of mentioning

confidence: 99%

The Green Roof Microbiome: Improving Plant Survival for Ecosystem Service Delivery

et al. 2018

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Plants are key contributors to ecosystem services delivered by green roofs in cities including stormwater capture, temperature regulation, and wildlife habitat. As a result, current research has primarily focused on their growth in relationship to extensive green roof (e.g., substrates <15 cm depth) ecosystem services. Green roofs are exposed to a variety of harsh abiotic factors such as intense solar radiation, wind, and isolation from ground-level habitats, making survival exceedingly difficult. Plants in natural habitats benefit from a variety of interactions with fungi and bacteria. These plant-microbial interactions improve mechanisms of survival and productivity; however, many green roof substrates are sterilized prior to installation and lack microbial communities with unstudied consequences for green roof plant health and subsequent survival and performance. In this paper, we present six hypotheses on the positive role of microbes in green roof applications. In natural and experimental systems, microbial interactions have been linked to plant (1) drought tolerance, (2) pathogen protection, (3) nutrient availability, (4) salt tolerance, (5) phytohormone production, and (6) substrate stabilization, all of which are desirable properties of green roof ecosystems. As few studies exist that directly examine these relationships on green roofs, we explore the existing ecological literature on these topics to unravel the mechanisms that could support more complex green roof ecosystem and lead to new insight into the design, performance, and broader applications in green infrastructure.

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Driving forces of soil bacterial community structure, diversity, and function in temperate grasslands and forests

Cited by 313 publications

References 56 publications

Algal richness in BSCs in forests under different management intensity with some implications for P cycling

Algal richness in BSCs in forests under different management intensity with some implications for P cycling

Arable agriculture changes soil microbial communities in the South African Grassland Biome

The Green Roof Microbiome: Improving Plant Survival for Ecosystem Service Delivery

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