Veldkamp, Edzo

[["dc.bibliographiccitation.journal","Frontiers in Microbiology"],["dc.bibliographiccitation.volume","10"],["dc.contributor.author","Beule, Lukas"],["dc.contributor.author","Lehtsaar, Ena"],["dc.contributor.author","Corre, Marife D."],["dc.contributor.author","Schmidt, Marcus"],["dc.contributor.author","Veldkamp, Edzo"],["dc.contributor.author","Karlovsky, Petr"],["dc.date.accessioned","2020-12-10T18:44:28Z"],["dc.date.available","2020-12-10T18:44:28Z"],["dc.date.issued","2020"],["dc.description.abstract","Agroforestry, which is the integration of trees into monoculture cropland, can alter soil properties and nutrient cycling. Temperate agroforestry practices have been shown to affect soil microbial communities as indicated by changes in enzyme activities, substrate-induced respiration, and microbial biomass. Research exploring soil microbial communities in temperate agroforestry with the help of molecular tools which allow for the quantification of microbial taxa and selected genes is scarce. Here, we quantified 13 taxonomic groups of microorganisms and nine genes involved in N cycling (N2 fixation, nitrification, and denitrification) in soils of three paired temperate agroforestry and conventional monoculture croplands using real-time PCR. The agroforestry croplands were poplar-based alley-cropping systems in which samples were collected in the tree rows as well as within the crop rows at three distances from the tree rows. The abundance of Acidobacteria, Actinobacteria, Alpha- and Gammaproteobacteria, Firmicutes, and Verrucomicrobia increased in the vicinity of poplar trees, which may be accounted for by the presence of persistent poplar roots as well as by the input of tree litter. The strongest population increase was observed for Basidiomycota, which was likely related to high soil moisture, the accumulation of tree litter, and the absence of tillage in the tree rows. Soil microorganisms carrying denitrification genes were more abundant in the tree rows than in the crop rows and monoculture systems, suggesting a greater potential for nitrate removal through denitrification, which may reduce nitrate leaching. Since microbial communities are involved in critical soil processes, we expect that the combination of real-time PCR with soil process measurements will greatly enhance insights into the microbial control of important soil functions in agroforestry systems."],["dc.identifier.doi","10.3389/fmicb.2019.03108"],["dc.identifier.eissn","1664-302X"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/17329"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/78469"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.publisher","Frontiers Media S.A."],["dc.relation.eissn","1664-302X"],["dc.rights","http://creativecommons.org/licenses/by/4.0/"],["dc.title","Poplar Rows in Temperate Agroforestry Croplands Promote Bacteria, Fungi, and Denitrification Genes in Soils"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Journal of Geophysical Research: Biogeosciences"],["dc.bibliographiccitation.volume","127"],["dc.contributor.author","Luo, Jie"],["dc.contributor.author","Beule, Lukas"],["dc.contributor.author","Shao, Guodong"],["dc.contributor.author","Veldkamp, Edzo"],["dc.contributor.author","Corre, Marife D."],["dc.date.accessioned","2022-05-02T07:47:08Z"],["dc.date.available","2022-05-02T07:47:08Z"],["dc.date.issued","2022"],["dc.identifier.doi","10.1029/2021JG006629"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/107224"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-561"],["dc.relation.eissn","2169-8961"],["dc.relation.issn","2169-8953"],["dc.rights.uri","http://creativecommons.org/licenses/by-nc-nd/4.0/"],["dc.title","Reduced Soil Gross N 2 O Emission Driven by Substrates Rather Than Denitrification Gene Abundance in Cropland Agroforestry and Monoculture"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","e0218779"],["dc.bibliographiccitation.issue","6"],["dc.bibliographiccitation.journal","PLOS ONE"],["dc.bibliographiccitation.volume","14"],["dc.contributor.author","Beule, Lukas"],["dc.contributor.author","Corre, Marife D."],["dc.contributor.author","Schmidt, Marcus"],["dc.contributor.author","Göbel, Leonie"],["dc.contributor.author","Veldkamp, Edzo"],["dc.contributor.author","Karlovsky, Petr"],["dc.date.accessioned","2019-07-09T11:51:50Z"],["dc.date.available","2019-07-09T11:51:50Z"],["dc.date.issued","2019"],["dc.description.abstract","Integration of trees in agroforestry systems can increase the system sustainability compared to monocultures. The resulting increase in system complexity is likely to affect soil-N cycling by altering soil microbial community structure and functions. Our study aimed to assess the abundance of genes encoding enzymes involved in soil-N cycling in paired monoculture and agroforestry cropland in a Phaeozem soil, and paired open grassland and agroforestry grassland in Histosol and Anthrosol soils. The soil fungi-to-bacteria ratio was greater in the tree row than in the crop or grass rows of the monoculture cropland and open grassland in all soil types, possibly due to increased input of tree residues and the absence of tillage in the Phaeozem (cropland) soil. In the Phaeozem (cropland) soil, gene abundances of amoA indicated a niche differentiation between archaeal and bacterial ammonia oxidizers that distinctly separated the influence of the tree row from the crop row and monoculture system. Abundances of nitrate (napA and narG), nitrite (nirK and nirS) and nitrous oxide reductase genes (nosZ clade I) were largely influenced by soil type rather than management system. The soil types' effects were associated with their differences in soil organic C, total N and pH. Our findings show that in temperate regions, conversion of monoculture cropland and open grassland to agroforestry systems can alter the abundance of soil bacteria and fungi and soil-N-cycling genes, particularly genes involved in ammonium oxidation."],["dc.identifier.doi","10.1371/journal.pone.0218779"],["dc.identifier.pmid","31246995"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/16207"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/60024"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.relation.orgunit","Zentrum für Biodiversität und Nachhaltige Landnutzung"],["dc.relation.orgunit","Zentrum für Biodiversität und Nachhaltige Landnutzung"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.subject.ddc","630"],["dc.title","Conversion of monoculture cropland and open grassland to agroforestry alters the abundance of soil bacteria, fungi and soil-N-cycling genes"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]