Klarner, Bernhard

[["dc.bibliographiccitation.firstpage","697"],["dc.bibliographiccitation.issue","6"],["dc.bibliographiccitation.journal","Biology and Fertility of Soils"],["dc.bibliographiccitation.lastpage","705"],["dc.bibliographiccitation.volume","51"],["dc.contributor.author","Krashevska, Valentyna"],["dc.contributor.author","Klarner, Bernhard"],["dc.contributor.author","Widyastuti, Rahayu"],["dc.contributor.author","Maraun, Mark"],["dc.contributor.author","Scheu, Stefan"],["dc.date.accessioned","2018-11-07T09:53:51Z"],["dc.date.available","2018-11-07T09:53:51Z"],["dc.date.issued","2015"],["dc.description.abstract","Focusing on Sumatra, a hotspot of tropical lowland rainforest transformation, we investigated effects of the conversion of rainforests into rubber agroforests (\"jungle rubber\"), intensive rubber, and oil palm plantations on the communities of litter and soil microorganisms and identified factors responsible for these changes. Litter basal respiration, microbial biomass, total bacterial phospholipid fatty acids (PLFAs), and fungal PLFAs did not vary significantly with rainforest conversion. In litter of converted ecosystems, the concentration of certain PLFAs including the Gram-negative bacteria marker PLFA cy17:0 and the Gram-positive bacteria marker PLFA i17:0 was reduced as compared to rainforest, whereas the concentration of the arbuscular mycorrhizal fungi (AMF) marker neutral lipid fatty acid (NLFA) 16:1 omega 5c increased. As indicated by redundancy analysis, litter pH and carbon concentration explained most of the variation in litter microbial community composition. In soil, microbial biomass did not vary significantly with rainforest conversion, whereas basal respiration declined. Total PLFAs and especially that of Gram-negative bacteria decreased, whereas PLFA i17:0 increased with rainforest conversion. The concentration of fungal PLFAs increased with rainforest conversion, whereas NLFA 16:1 omega 5c did not change significantly. Redundancy analysis indicated that soil pH explained most of the variation in soil microbial community composition. Overall, the data suggest that conversion of rainforests into production systems results in more pronounced changes in microbial community composition in soil as compared to litter. In particular, the response of fungi and bacteria was more pronounced in soil, while the response of AMF was more pronounced in litter. Notably, only certain bacterial markers but not those of saprotrophic fungi and AMF were detrimentally affected by rainforest conversion."],["dc.description.sponsorship","German Research Foundation (DFG) [CRC990]"],["dc.identifier.doi","10.1007/s00374-015-1021-4"],["dc.identifier.isi","000359160800006"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/36417"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation","SFB 990: Ökologische und sozioökonomische Funktionen tropischer Tieflandregenwald-Transformationssysteme (Sumatra, Indonesien)"],["dc.relation","SFB 990 | B | B08: Struktur und Funktion des Zersetzersystems in Transformationssystemen von Tiefland-Regenwäldern"],["dc.relation.issn","1432-0789"],["dc.relation.issn","0178-2762"],["dc.subject.gro","sfb990_journalarticles"],["dc.title","Impact of tropical lowland rainforest conversion into rubber and oil palm plantations on soil microbial communities"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1845"],["dc.bibliographiccitation.issue","12"],["dc.bibliographiccitation.journal","Journal of Animal Ecology"],["dc.bibliographiccitation.lastpage","1859"],["dc.bibliographiccitation.volume","88"],["dc.contributor.author","Potapov, Anton M."],["dc.contributor.author","Klarner, Bernhard"],["dc.contributor.author","Sandmann, Dorothee"],["dc.contributor.author","Widyastuti, Rahayu"],["dc.contributor.author","Scheu, Stefan"],["dc.date.accessioned","2020-01-29T10:50:42Z"],["dc.date.available","2020-01-29T10:50:42Z"],["dc.date.issued","2019"],["dc.description.abstract","Many ecosystem functions depend on the structure of food webs, which heavily relies on the body size spectrum of the community. Despite that, little is known on how the size spectrum of soil animals responds to agricultural practices in tropical land-use systems and how these responses affect ecosystem functioning. We studied land-use-induced changes in below-ground communities in tropical lowland ecosystems in Sumatra (Jambi province, Indonesia), a hot spot of tropical rainforest conversion into rubber and oil palm plantations. The study included ca. 30,000 measured individuals from 33 high-order taxa of meso- and macrofauna spanning eight orders of magnitude in body mass. Using individual body masses, we calculated the metabolism of trophic guilds and used food web models to calculate energy fluxes and infer ecosystem functions, such as decomposition, herbivory, primary and intraguild predation. Land-use change was associated with reduced abundance and taxonomic diversity of soil invertebrates, but strong increase in total biomass and moderate changes in total energy flux. These changes were due to increased biomass of large-sized decomposers in soil, in particular earthworms, with their share in community metabolism increasing from 11% in rainforest to 59%-76% in jungle rubber, and rubber and oil palm plantations. Decomposition, that is the energy flux to decomposers, stayed unchanged, but herbivory, primary and intraguild predation decreased by an order of magnitude in plantation systems. Intraguild predation was very important, being responsible for 38% of the energy flux in rainforest according to our model. Conversion of rainforest into monoculture plantations is associated by an uneven loss of size classes and trophic levels of soil invertebrates resulting in sequestration of energy in large-sized primary consumers and restricted flux of energy to higher trophic levels. Pronounced differences between rainforest and jungle rubber reflect sensitivity of rainforest soil animal communities to moderate land-use changes. Soil communities in plantation systems sustained high total energy flux despite reduced biodiversity. The high energy flux into large decomposers but low energy fluxes into other trophic guilds suggests that trophic multifunctionality of below-ground communities is compromised in plantation systems."],["dc.identifier.doi","10.1111/1365-2656.13027"],["dc.identifier.pmid","31111468"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/62878"],["dc.language.iso","en"],["dc.relation","SFB 990: Ökologische und sozioökonomische Funktionen tropischer Tieflandregenwald-Transformationssysteme (Sumatra, Indonesien)"],["dc.relation","SFB 990 | B | B09: Oberirdische Biodiversitätsmuster und Prozesse in Regenwaldtransformations-Landschaften"],["dc.relation.eissn","1365-2656"],["dc.relation.issn","0021-8790"],["dc.relation.orgunit","Zentrum für Biodiversität und Nachhaltige Landnutzung"],["dc.subject.gro","sfb990_journalarticles"],["dc.title","Linking size spectrum, energy flux and trophic multifunctionality in soil food webs of tropical land-use systems"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","255"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Oecologia"],["dc.bibliographiccitation.lastpage","266"],["dc.bibliographiccitation.volume","187"],["dc.contributor.author","Krashevska, Valentyna"],["dc.contributor.author","Malysheva, Elena"],["dc.contributor.author","Klarner, Bernhard"],["dc.contributor.author","Mazei, Yuri"],["dc.contributor.author","Maraun, Mark"],["dc.contributor.author","Widyastuti, Rahayu"],["dc.contributor.author","Scheu, Stefan"],["dc.date.accessioned","2020-12-10T14:10:38Z"],["dc.date.available","2020-12-10T14:10:38Z"],["dc.date.issued","2018"],["dc.identifier.doi","10.1007/s00442-018-4103-9"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/70828"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.relation","SFB 990: Ökologische und sozioökonomische Funktionen tropischer Tieflandregenwald-Transformationssysteme (Sumatra, Indonesien)"],["dc.relation","SFB 990 | B | B08: Struktur und Funktion des Zersetzersystems in Transformationssystemen von Tiefland-Regenwäldern"],["dc.relation","SFB 990 | B | B13: Impact of management intensity and tree enrichment of oil palm plantations on below- and aboveground invertebrates in Sumatra (Indonesia)"],["dc.relation.orgunit","Zentrum für Biodiversität und Nachhaltige Landnutzung"],["dc.subject.gro","sfb990_journalarticles"],["dc.title","Micro-decomposer communities and decomposition processes in tropical lowlands as affected by land use and litter type"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","338"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Acarologia"],["dc.bibliographiccitation.lastpage","352"],["dc.bibliographiccitation.volume","60"],["dc.contributor.author","Quintero-Gutiérrez, Edwin Javier"],["dc.contributor.author","Sandmann, Dorothee"],["dc.contributor.author","Cómbita-Heredia, Orlando"],["dc.contributor.author","Klarner, Bernhard"],["dc.contributor.author","Widyastuti, Rahayu"],["dc.contributor.author","Scheu, Stefan"],["dc.date.accessioned","2021-04-22T12:22:12Z"],["dc.date.available","2021-04-22T12:22:12Z"],["dc.date.issued","2020"],["dc.description.abstract","A new species of blattisociid mites Lasioseius orangrimbae n. sp., that belongs to the floridensis-group, is described based on females and males from litter and soil samples of secondary rainforest in Sumatra, Indonesia."],["dc.identifier.doi","10.24349/acarologia/20204371"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/84293"],["dc.relation","SFB 990: Ökologische und sozioökonomische Funktionen tropischer Tieflandregenwald-Transformationssysteme (Sumatra, Indonesien)"],["dc.relation","SFB 990 | B | B08: Struktur und Funktion des Zersetzersystems in Transformationssystemen von Tiefland-Regenwäldern"],["dc.subject.gro","sfb990_journalarticles"],["dc.title","A new species of the genus Lasioseius (Acari: Blattisociidae) inhabiting litter of secondary rainforest in Sumatra, Indonesia"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","131"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","The American Naturalist"],["dc.bibliographiccitation.lastpage","143"],["dc.bibliographiccitation.volume","190"],["dc.contributor.author","Jochum, Malte"],["dc.contributor.author","Barnes, Andrew D."],["dc.contributor.author","Ott, David"],["dc.contributor.author","Lang, Birgit"],["dc.contributor.author","Klarner, Bernhard"],["dc.contributor.author","Farajallah, Achmad"],["dc.contributor.author","Scheu, Stefan"],["dc.contributor.author","Brose, Ulrich"],["dc.date.accessioned","2018-11-07T10:22:18Z"],["dc.date.available","2018-11-07T10:22:18Z"],["dc.date.issued","2017"],["dc.description.abstract","Living organisms are constrained by both resource quantity and quality. Ecological stoichiometry offers important insights into how the elemental composition of resources affects their consumers. If resource quality decreases, consumers can respond by shifting their body stoichiometry, avoiding low-quality resources, or up-regulating feeding rates to maintain the supply of required elements while excreting excess carbon (i.e., compensatory feeding). We analyzed multitrophic consumer body stoichiometry, biomass, and feeding rates along a resource-quality gradient in the litter of tropical forest and rubber and oil-palm plantations. Specifically, we calculated macroinvertebrate feeding rates based on consumer metabolic demand and assimilation efficiency. Using linear mixed effects models, we assessed resource-quality effects on macroinvertebrate detritivore and predator communities. We did not detect shifts in consumer body stoichiometry or decreases in consumer biomass in response to declining resource quality, as indicated by increasing carbon-to-nitrogen ratios. However, across trophic levels, we found a strong indication of decreasing resource quality leading to increased consumer feeding rates through altered assimilation efficiency and community body size structure. Our study reveals the influence of resource quality on multitrophic consumer feeding rates and suggests compensatory feeding to be more common across consumer trophic levels than was formerly known."],["dc.identifier.doi","10.1086/691790"],["dc.identifier.isi","000403565000012"],["dc.identifier.pmid","28617641"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/42244"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","PUB_WoS_Import"],["dc.relation","SFB 990: Ökologische und sozioökonomische Funktionen tropischer Tieflandregenwald-Transformationssysteme (Sumatra, Indonesien)"],["dc.relation","SFB 990 | B | B01: Structure, stability and functioning of macro-invertebrate communities in rainforest transformation systems in Sumatra (Indonesia)"],["dc.relation","SFB 990 | B | B08: Struktur und Funktion des Zersetzersystems in Transformationssystemen von Tiefland-Regenwäldern"],["dc.relation.issn","1537-5323"],["dc.relation.issn","0003-0147"],["dc.subject.gro","sfb990_journalarticles"],["dc.title","Decreasing Stoichiometric Resource Quality Drives Compensatory Feeding across Trophic Levels in Tropical Litter Invertebrate Communities"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]