Potapov, Anton M.

[["dc.bibliographiccitation.firstpage","839"],["dc.bibliographiccitation.issue","6"],["dc.bibliographiccitation.journal","Biology and Fertility of Soils"],["dc.bibliographiccitation.lastpage","851"],["dc.bibliographiccitation.volume","56"],["dc.contributor.author","Li, Zhipeng"],["dc.contributor.author","Scheunemann, Nicole"],["dc.contributor.author","Potapov, Anton M."],["dc.contributor.author","Shi, Lingling"],["dc.contributor.author","Pausch, Johanna"],["dc.contributor.author","Scheu, Stefan"],["dc.contributor.author","Pollierer, Melanie M."],["dc.date.accessioned","2020-12-10T14:10:20Z"],["dc.date.available","2020-12-10T14:10:20Z"],["dc.date.issued","2020"],["dc.identifier.doi","10.1007/s00374-020-01467-8"],["dc.identifier.eissn","1432-0789"],["dc.identifier.issn","0178-2762"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/70727"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.relation.orgunit","Zentrum für Biodiversität und Nachhaltige Landnutzung"],["dc.title","Incorporation of root-derived carbon into soil microarthropods varies between cropping systems"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","1365-2656.13511"],["dc.bibliographiccitation.journal","Journal of Animal Ecology"],["dc.contributor.author","Potapov, Anton M."],["dc.contributor.author","Pollierer, Melanie M."],["dc.contributor.author","Salmon, Sandrine"],["dc.contributor.author","Šustr, Vladimír"],["dc.contributor.author","Chen, Ting‐Wen"],["dc.date.accessioned","2021-07-05T14:57:39Z"],["dc.date.available","2021-07-05T14:57:39Z"],["dc.date.issued","2021"],["dc.identifier.doi","10.1111/1365-2656.13511"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/87700"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-441"],["dc.relation.eissn","1365-2656"],["dc.relation.issn","0021-8790"],["dc.title","Multidimensional trophic niche revealed by complementary approaches: Gut content, digestive enzymes, fatty acids and stable isotopes in Collembola"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","447"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Oecologia"],["dc.bibliographiccitation.lastpage","460"],["dc.bibliographiccitation.volume","189"],["dc.contributor.author","Potapov, Anton M."],["dc.contributor.author","Tiunov, Alexei V."],["dc.contributor.author","Scheu, Stefan"],["dc.contributor.author","Larsen, Thomas Ostenfeld"],["dc.contributor.author","Pollierer, Melanie M."],["dc.date.accessioned","2020-01-29T11:07:17Z"],["dc.date.available","2020-01-29T11:07:17Z"],["dc.date.issued","2019"],["dc.description.abstract","Quantification of the bacterial, fungal, and plant energy channels to the nutrition of detritivores is methodologically challenging. This is especially true for earthworms that ingest large amounts of litter and soil mixed with microorganisms. Novel methods such as compound-specific stable isotope analysis (CSIA) of C and N of individual amino acids promise major progress in this field in comparison with bulk stable isotope analysis (bulk SIA). Here, we combine CSIA and bulk SIA of carbon and nitrogen to quantify the linkage of epigeic and endogeic earthworm species to different energy channels across boreal and temperate forest ecosystems. The results showed pronounced flux of energy directly from plants to earthworms (33-50% of essential amino acids, EAA) refining the position of earthworms in soil food webs as both competitors and consumers of microorganisms. Epigeic earthworm species primarily relied on plant litter and endogeic species primarily relied on bacteria and soil organic matter. The linkage of both groups to plant or microbial energy channel was likely driven by the quality of detritus. Both bulk 15N and 13C enrichments were related to the trophic level of earthworms. Furthermore, 15N enrichment was related to the proportions of bacterial and plant EAA in the diet. Strong negative correlation between trophic level (CSIA of nitrogen) and the proportion of plant EAA (CSIA of carbon) suggests that both novel methods can indicate the degree of microbivory in detritivores. CSIA of amino acids provide detailed and baseline-independent information on basal resources and trophic levels of detritivores."],["dc.identifier.doi","10.1007/s00442-018-04335-3"],["dc.identifier.pmid","30659383"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/62885"],["dc.language.iso","en"],["dc.relation.eissn","1432-1939"],["dc.relation.issn","0029-8549"],["dc.relation.orgunit","Zentrum für Biodiversität und Nachhaltige Landnutzung"],["dc.title","Combining bulk and amino acid stable isotope analyses to quantify trophic level and basal resources of detritivores: a case study on earthworms"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","e01384"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Ecological Monographs"],["dc.bibliographiccitation.volume","89"],["dc.contributor.author","Pollierer, Melanie M."],["dc.contributor.author","Larsen, Thomas Ostenfeld"],["dc.contributor.author","Potapov, Anton M."],["dc.contributor.author","Brückner, Adrian"],["dc.contributor.author","Heethoff, Michael"],["dc.contributor.author","Dyckmans, Jens"],["dc.contributor.author","Scheu, Stefan"],["dc.date.accessioned","2020-01-29T11:03:15Z"],["dc.date.available","2020-01-29T11:03:15Z"],["dc.date.issued","2019"],["dc.description.abstract","Food webs in soil differ fundamentally from those aboveground; they are based on inputs from both living plants via root exudates, and from detritus, which is a complex mixture of fungi, bacteria, and dead plant remains. Trophic relationships are difficult to disentangle due to the cryptic lifestyle of soil animals and inevitable microbial contributions to their diet. Compound‐specific isotope analysis of amino acids (AAs) is increasingly used to explore complex food webs. The combined use of AA δ13C and δ15N values is a promising new approach to disentangle trophic relationships since it provides independent but complementary information on basal resources, as well as the trophic position of consumers. We conducted a controlled feeding study in which we reconstructed trophic chains from main basal resources (bacteria, fungi, plants) to primary consumers (springtails, oribatid mites) and predators (gamasid mites, spiders). We analyzed dual compound‐specific isotope AA values of both resources and consumers. By applying an approach termed “stable isotope (13C) fingerprinting” we identified basal resources, and concomitantly calculated trophic positions using 15N values of trophic and source AAs in consumers. In the 13C fingerprinting analysis, consumers in general grouped close to their basal resources. However, higher than usual offsets in AA δ13C between diet and consumers suggest either gut microbial supplementation or the utilization of specific resource fractions. Identification of trophic position crucially depends on correct estimates of the trophic discrimination factor (TDFGlu‐Phe), which was close to the commonly applied value of 7.6‰ in primary consumers feeding on microbial resources, but considerably lower in arachnid predators (~2.4‰), presumably due to higher diet quality, excretion of guanine, and fluid feeding. While our feeding study demonstrates that dual compound‐specific AA analyses hold great promise in delineating trophic linkages among soil‐dwelling consumers and their resources, it also highlights that a “one‐size‐fits‐all” approach to TDFGlu‐Phe does not apply to soil food webs."],["dc.identifier.doi","10.1002/ecm.1384"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/62883"],["dc.language.iso","en"],["dc.relation.issn","0012-9615"],["dc.relation.issn","1557-7015"],["dc.relation.orgunit","Zentrum für Biodiversität und Nachhaltige Landnutzung"],["dc.title","Compound‐specific isotope analysis of amino acids as a new tool to uncover trophic chains in soil food webs"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]