Becker, Joscha Nico

[["dc.bibliographiccitation.firstpage","989"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","Ecosystems"],["dc.bibliographiccitation.lastpage","999"],["dc.bibliographiccitation.volume","20"],["dc.contributor.author","Becker, Joscha N."],["dc.contributor.author","Gütlein, Adrian"],["dc.contributor.author","Sierra Cornejo, Natalia"],["dc.contributor.author","Kiese, Ralf"],["dc.contributor.author","Hertel, Dietrich"],["dc.contributor.author","Kuzyakov, Yakov"],["dc.date.accessioned","2020-12-10T14:11:07Z"],["dc.date.available","2020-12-10T14:11:07Z"],["dc.date.issued","2016"],["dc.identifier.doi","10.1007/s10021-016-0087-7"],["dc.identifier.eissn","1435-0629"],["dc.identifier.issn","1432-9840"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/70969"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Legume and Non-legume Trees Increase Soil Carbon Sequestration in Savanna"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","2321"],["dc.bibliographiccitation.issue","8"],["dc.bibliographiccitation.journal","Land Degradation & Development"],["dc.bibliographiccitation.lastpage","2329"],["dc.bibliographiccitation.volume","29"],["dc.contributor.author","Becker, Joscha N."],["dc.contributor.author","Kuzyakov, Yakov"],["dc.date.accessioned","2020-12-10T14:06:52Z"],["dc.date.available","2020-12-10T14:06:52Z"],["dc.date.issued","2018"],["dc.identifier.doi","10.1002/ldr.v29.8"],["dc.identifier.issn","1085-3278"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/70053"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Teatime on Mount Kilimanjaro: Assessing climate and land-use effects on litter decomposition and stabilization using the Tea Bag Index"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","104941"],["dc.bibliographiccitation.journal","Catena"],["dc.bibliographiccitation.volume","196"],["dc.contributor.author","Hennings, Nina"],["dc.contributor.author","Becker, Joscha N."],["dc.contributor.author","Guillaume, Thomas"],["dc.contributor.author","Damris, Muhammad"],["dc.contributor.author","Dippold, Michaela A."],["dc.contributor.author","Kuzyakov, Yakov"],["dc.date.accessioned","2021-04-14T08:30:34Z"],["dc.date.available","2021-04-14T08:30:34Z"],["dc.date.issued","2021"],["dc.identifier.doi","10.1016/j.catena.2020.104941"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/83287"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.relation","SFB 990: Ökologische und sozioökonomische Funktionen tropischer Tieflandregenwald-Transformationssysteme (Sumatra, Indonesien)"],["dc.relation","SFB 990 | A | A04: Carbon stock, turnover and functions in heavily weathered soils under lowland rainforest transformation systems"],["dc.relation.issn","0341-8162"],["dc.relation.orgunit","Department für Nutzpflanzenwissenschaften"],["dc.subject.gro","sfb990_journalarticles"],["dc.title","Riparian wetland properties counter the effect of land-use change on soil carbon stocks after rainforest conversion to plantations"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","797"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Oecologia"],["dc.bibliographiccitation.lastpage","812"],["dc.bibliographiccitation.volume","195"],["dc.contributor.author","Sierra Cornejo, Natalia"],["dc.contributor.author","Leuschner, Christoph"],["dc.contributor.author","Becker, Joscha N."],["dc.contributor.author","Hemp, Andreas"],["dc.contributor.author","Schellenberger Costa, David"],["dc.contributor.author","Hertel, Dietrich"],["dc.date.accessioned","2021-04-14T08:29:12Z"],["dc.date.available","2021-04-14T08:29:12Z"],["dc.date.issued","2021"],["dc.identifier.doi","10.1007/s00442-021-04860-8"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/82833"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.relation.eissn","1432-1939"],["dc.relation.issn","0029-8549"],["dc.title","Climate implications on forest above- and belowground carbon allocation patterns along a tropical elevation gradient on Mt. Kilimanjaro (Tanzania)"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","243"],["dc.bibliographiccitation.issue","1-2"],["dc.bibliographiccitation.journal","Plant and Soil"],["dc.bibliographiccitation.lastpage","259"],["dc.bibliographiccitation.volume","411"],["dc.contributor.author","Guetlein, Adrian"],["dc.contributor.author","Zistl-Schlingmann, Marcus"],["dc.contributor.author","Becker, Joscha Nico"],["dc.contributor.author","Cornejo, Natalia Sierra"],["dc.contributor.author","Detsch, Florian"],["dc.contributor.author","Dannenmann, Michael"],["dc.contributor.author","Appelhans, Tim"],["dc.contributor.author","Hertel, Dietrich"],["dc.contributor.author","Kuzyakov, Yakov"],["dc.contributor.author","Kiese, Ralf"],["dc.date.accessioned","2018-11-07T10:28:04Z"],["dc.date.available","2018-11-07T10:28:04Z"],["dc.date.issued","2017"],["dc.description.abstract","Tropical alpine ecosystems are identified as the most vulnerable to global environmental change, yet despite their sensitivity they are among the least studied ecosystems in the world. Despite its important role in constraining potential changes to the carbon balance, soil nitrogen (N) turnover and plant availability in high latitude and high altitude ecosystems is still poorly understood. Here we present a first time study on a tropical alpine Helichrysum ecosystem at Mt. Kilimanjaro, Tanzania, which lies at an altitude of 3880 m. Vegetation composition is characterized and major gross N turnover rates are investigated using the N-15 pool dilution method for three different vegetation cover types. In addition greenhouse gas exchange (CO2, N2O and CH4) was manually measured using static chambers. Gross N turnover rates and soil CO2 and N2O emissions were generally lower than values reported for temperate ecosystems, but similar to tundra ecosystems. Gross N mineralization, NH4 (+) immobilization rates, and CO2 emissions were significantly higher on densely vegetated plots than on sparsely vegetated plots. Relative soil N retention was high and increased with vegetation cover, which suggests high competition for available soil N between microbes and plants. Due to high percolation rates, irrigation/rainfall has no impact on N turnover rates and greenhouse gas (GHG) emissions. While soil N2O fluxes were below the detection limit at all plots, soil respiration rates and CH4 uptake rates were higher at the more densely vegetated plots. Only soil respiration rates followed the pronounced diurnal course of air and soil temperature. Overall, our data show a tight N cycle dominated by closely coupled ammonification-NH4 (+)-immobilization, which is little prone to N losses. Warming could enhance vegetation cover and thus N turnover; however, only narrower C:N ratios due to atmospheric nitrogen deposition may open the N cycle of Helichrysum ecosystems."],["dc.identifier.doi","10.1007/s11104-016-3029-4"],["dc.identifier.isi","000394142900018"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/43341"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","PUB_WoS_Import"],["dc.publisher","Springer"],["dc.publisher.place","Dordrecht"],["dc.relation.conference","4th International Zinc (Zn) Symposium"],["dc.relation.eventlocation","Sao Paulo, BRAZIL"],["dc.relation.issn","1573-5036"],["dc.relation.issn","0032-079X"],["dc.title","Nitrogen turnover and greenhouse gas emissions in a tropical alpine ecosystem, Mt. Kilimanjaro, Tanzania"],["dc.type","conference_paper"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.journal","Nature Ecology & Evolution"],["dc.contributor.author","Albrecht, Jörg"],["dc.contributor.author","Peters, Marcell K."],["dc.contributor.author","Becker, Joscha N."],["dc.contributor.author","Behler, Christina"],["dc.contributor.author","Classen, Alice"],["dc.contributor.author","Ensslin, Andreas"],["dc.contributor.author","Ferger, Stefan W."],["dc.contributor.author","Gebert, Friederike"],["dc.contributor.author","Gerschlauer, Friederike"],["dc.contributor.author","Helbig-Bonitz, Maria"],["dc.contributor.author","Schleuning, Matthias"],["dc.date.accessioned","2021-10-01T09:57:43Z"],["dc.date.available","2021-10-01T09:57:43Z"],["dc.date.issued","2021"],["dc.identifier.doi","10.1038/s41559-021-01550-9"],["dc.identifier.pii","1550"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/89903"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-469"],["dc.relation.eissn","2397-334X"],["dc.title","Species richness is more important for ecosystem functioning than species turnover along an elevational gradient"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","103167"],["dc.bibliographiccitation.journal","European Journal of Soil Biology"],["dc.bibliographiccitation.volume","97"],["dc.contributor.author","Ndossi, Emanueli M."],["dc.contributor.author","Becker, Joscha N."],["dc.contributor.author","Hemp, Andreas"],["dc.contributor.author","Dippold, Michaela A."],["dc.contributor.author","Kuzyakov, Yakov"],["dc.contributor.author","Razavi, Bahar S."],["dc.date.accessioned","2020-12-10T14:23:45Z"],["dc.date.available","2020-12-10T14:23:45Z"],["dc.date.issued","2020"],["dc.identifier.doi","10.1016/j.ejsobi.2020.103167"],["dc.identifier.issn","1164-5563"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/72039"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.relation.orgunit","Department für Nutzpflanzenwissenschaften"],["dc.title","Effects of land use and elevation on the functional characteristics of soil enzymes at Mt. Kilimanjaro"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.journal","Frontiers in Plant Science"],["dc.bibliographiccitation.volume","11"],["dc.contributor.author","Sierra Cornejo, Natalia"],["dc.contributor.author","Hertel, Dietrich"],["dc.contributor.author","Becker, Joscha N."],["dc.contributor.author","Hemp, Andreas"],["dc.contributor.author","Leuschner, Christoph"],["dc.date.accessioned","2020-12-10T18:44:40Z"],["dc.date.available","2020-12-10T18:44:40Z"],["dc.date.issued","2020"],["dc.description.abstract","Fine roots (≤2 mm) consume a large proportion of photosynthates and thus play a key role in the global carbon cycle, but our knowledge about fine root biomass, production, and turnover across environmental gradients is insufficient, especially in tropical ecosystems. Root system studies along elevation transects can produce valuable insights into root trait-environment relationships and may help to explore the evidence for a root economics spectrum (RES) that should represent a trait syndrome with a trade-off between resource acquisitive and conservative root traits. We studied fine root biomass, necromass, production, and mean fine root lifespan (the inverse of fine root turnover) of woody plants in six natural tropical ecosystems (savanna, four tropical mountain forest types, tropical alpine heathland) on the southern slope of Mt. Kilimanjaro (Tanzania) between 900 and 4,500 m a.s.l. Fine root biomass and necromass showed a unimodal pattern along the slope with a peak in the moist upper montane forest (~2,800 m), while fine root production varied little between savanna and upper montane forest to decrease toward the alpine zone. Root:shoot ratio (fine root biomass and production related to aboveground biomass) in the tropical montane forest increased exponentially with elevation, while it decreased with precipitation and soil nitrogen availability (decreasing soil C:N ratio). Mean fine root lifespan was lowest in the ecosystems with pronounced resource limitation (savanna at low elevation, alpine heathland at high elevation) and higher in the moist and cool forest belt (~1,800–3,700 m). The variation in root traits across the elevation gradient fits better with the concept of a multi-dimensional RES, as root tissue density and specific root length showed variable relations to each other, which does not agree with a simple trade-off between acquisitive and conservative root traits. In conclusion, despite large variation in fine root biomass, production, and morphology among the different plant species and ecosystems, a general belowground shift in carbohydrate partitioning is evident from 900 to 4,500 m a.s.l., suggesting that plant growth is increasingly limited by nutrient (probably N) shortage toward higher elevations."],["dc.identifier.doi","10.3389/fpls.2020.00013"],["dc.identifier.eissn","1664-462X"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/17345"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/78552"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.publisher","Frontiers Media S.A."],["dc.relation.eissn","1664-462X"],["dc.rights","http://creativecommons.org/licenses/by/4.0/"],["dc.title","Biomass, Morphology, and Dynamics of the Fine Root System Across a 3,000-M Elevation Gradient on Mt. Kilimanjaro"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","67"],["dc.bibliographiccitation.journal","Geoderma"],["dc.bibliographiccitation.lastpage","76"],["dc.bibliographiccitation.volume","324"],["dc.contributor.author","Parvin, Shahnaj"],["dc.contributor.author","Blagodatskaya, Evgenia"],["dc.contributor.author","Becker, Joscha Nico"],["dc.contributor.author","Kuzyakov, Yakov"],["dc.contributor.author","Uddin, Shihab"],["dc.contributor.author","Dorodnikov, Maxim"],["dc.date.accessioned","2018-04-23T11:35:19Z"],["dc.date.available","2018-04-23T11:35:19Z"],["dc.date.issued","2018"],["dc.description.abstract","The formation of microrelief forms in peatlands - elevated and dry hummocks, depressed wet hollows and intermediate lawns - is controlled by the interaction of water table, nutrient availability and dominant plant communities. This affects the composition and activity of various functional groups of microorganisms. With depth, the change in peat quality from less to more highly processed organic material additionally regulates microbial activity. We hypothesized that microbial biomass and enzyme activities are driven by aeration and by peat quality and therefore (i) they increase from hollows (water saturated/anaerobic) through lawns (intermediate) to hummocks (aerobic) in the top peat and ii) they decrease with depth due to increasing distance from fresh plant-derived inputs and lower oxygen availability. These hypotheses were tested for enzymes catalysing the decomposition of C-, N-, P- and S-containing organic compounds in peat of the three microform types at three depths (15, 50 and 200 cm). Microbial biomass and peat chemical characteristics were compared with enzyme kinetic parameters, i.e. maximal potential activity (Vmax) and the Michaelis constant (Km). Microbial biomass carbon (MBC) and Vmax of β-glucosidase and N-acetyl glucosaminidase increased by 30–70% from hummocks and lawns to hollows in the top 15 cm, contradicting the hypothesis. Similarly, Km and the catalytic efficiency of enzymes (Ka = Vmax/Km) were best related to MBC distribution and not to the aeration gradient. With depth, Vmax of β-glucosidase, xylosidase and leucine aminopeptidase followed the hypothesized pattern in hollows. In contrast, MBC was 1.3–4 times higher at 50 cm, followed by successively lower contents at 15 and 200 cm in all microforms. The same depth pattern characterized the Vmax distribution of 6 out of 8 enzymes. Phosphatase activity decreased from drier hummock to wetter hollows and the higher activity throughout the peat profile suggested a high microbial demand for P. Enzyme activities and catalytic efficiency in peat were closely linked to the distribution of microbial biomass with depth, which in turn was best explained by P content. From the ecological perspective, these results clearly show that peat decomposition will be accelerated when microbial activity is stimulated e.g. by increased P availability."],["dc.identifier.doi","10.1016/j.geoderma.2018.03.006"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/13274"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.title","Depth rather than microrelief controls microbial biomass and kinetics of C-, N-, P- and S-cycle enzymes in peatland"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","100266"],["dc.bibliographiccitation.journal","Rhizosphere"],["dc.bibliographiccitation.volume","16"],["dc.contributor.author","Holz, Maire"],["dc.contributor.author","Becker, Joscha N."],["dc.contributor.author","Daudin, Gabrielle"],["dc.contributor.author","Oburger, Eva"],["dc.date.accessioned","2021-04-14T08:28:30Z"],["dc.date.available","2021-04-14T08:28:30Z"],["dc.date.issued","2020"],["dc.identifier.doi","10.1016/j.rhisph.2020.100266"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/82629"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.relation.issn","2452-2198"],["dc.title","Application of planar optodes to measure CO2 gradients in the rhizosphere of unsaturated soils"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]