Kuzyakov, Yakov

[["dc.bibliographiccitation.artnumber","127"],["dc.bibliographiccitation.journal","Frontiers in Earth Science"],["dc.bibliographiccitation.volume","7"],["dc.contributor.author","Kayler, Zachary E."],["dc.contributor.author","Premke, Katrin"],["dc.contributor.author","Gessler, Arthur"],["dc.contributor.author","Gessner, Mark O."],["dc.contributor.author","Griebler, Christian"],["dc.contributor.author","Hilt, Sabine"],["dc.contributor.author","Klemedtsson, Leif"],["dc.contributor.author","Kuzyakov, Yakov"],["dc.contributor.author","Reichstein, Markus"],["dc.contributor.author","Siemens, Jan"],["dc.contributor.author","Totsche, Kai-Uwe"],["dc.contributor.author","Tranvik, Lars"],["dc.contributor.author","Wagner, Annekatrin"],["dc.contributor.author","Weitere, Markus"],["dc.contributor.author","Grossart, Hans-Peter"],["dc.date.accessioned","2019-07-09T11:51:56Z"],["dc.date.available","2019-07-09T11:51:56Z"],["dc.date.issued","2019"],["dc.description.abstract","Across a landscape, aquatic-terrestrial interfaces within and between ecosystems are hotspots of organic matter (OM) mineralization. These interfaces are characterized by sharp spatio-temporal changes in environmental conditions, which affect OM properties and thus control OM mineralization and other transformation processes. Consequently, the extent of OM movement at and across aquatic-terrestrial interfaces is crucial in determining OM turnover and carbon (C) cycling at the landscape scale. Here, we propose expanding current concepts in aquatic and terrestrial ecosystem sciences to comprehensively evaluate OM turnover at the landscape scale. We focus on three main concepts toward explaining OM turnover at the landscape scale: the landscape spatiotemporal context, OM turnover described by priming and ecological stoichiometry, and anthropogenic effects as a disruptor of natural OM transfer magnitudes and pathways. A conceptual framework is introduced that allows for discussing the disparities in spatial and temporal scales of OM transfer, changes in environmental conditions, ecosystem connectivity, and microbial–substrate interactions. The potential relevance of priming effects in both terrestrial and aquatic systems is addressed. For terrestrial systems, we hypothesize that the interplay between the influx of OM, its corresponding elemental composition, and the elemental demand of the microbial communities may alleviate spatial and metabolic thresholds. In comparison, substrate level OM dynamics may be substantially different in aquatic systems due to matrix effects that accentuate the role of abiotic conditions, substrate quality, and microbial community dynamics. We highlight the disproportionate impact anthropogenic activities can have on OM cycling across the landscape. This includes reversing natural OM flows through the landscape, disrupting ecosystem connectivity, and nutrient additions that cascade across the landscape. This knowledge is crucial for a better understanding of OM cycling in a landscape context, in particular since terrestrial and aquatic compartments may respond differently to the ongoing changes in climate, land use, and other anthropogenic interferences."],["dc.identifier.doi","10.3389/feart.2019.00127"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/16232"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/60043"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.subject.ddc","630"],["dc.title","Integrating Aquatic and Terrestrial Perspectives to Improve Insights Into Organic Matter Cycling at the Landscape Scale"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1"],["dc.bibliographiccitation.issue","6"],["dc.bibliographiccitation.journal","Journal of Plant Nutrition and Soil Science"],["dc.bibliographiccitation.lastpage","8"],["dc.bibliographiccitation.volume","182"],["dc.contributor.author","Kumar, Amit"],["dc.contributor.author","Shahbaz, Muhammad"],["dc.contributor.author","Koirala, Manisha"],["dc.contributor.author","Blagodatskaya, Evgenia"],["dc.contributor.author","Seidel, Sabine Julia"],["dc.contributor.author","Kuzyakov, Yakov"],["dc.contributor.author","Pausch, Johanna"],["dc.date.accessioned","2019-12-03T12:51:36Z"],["dc.date.accessioned","2021-10-27T13:20:08Z"],["dc.date.available","2019-12-03T12:51:36Z"],["dc.date.available","2021-10-27T13:20:08Z"],["dc.date.issued","2019"],["dc.description.abstract","To overcome soil nutrient limitation, many plants have developed complex nutrient acquisition strategies including altering root morphology, root hair formation or colonization by arbuscular mycorrhizal fungi (AMF). The interactions of these strategies and their plasticity are, however, affected by soil nutrient status throughout plant growth. Such plasticity is decisive for plant phosphorus (P) acquisition in P-limited soils. We investigated the P acquisition strategies and their plasticity of two maize genotypes characterized by the presence or absence of root hairs. We hypothesized that in the absence of root hairs plant growth is facilitated by traits with complementary functions, e.g., by higher root mycorrhizal colonization. This dependence on complementary traits will decrease in P fertilized soils. At early growth stages, root hairs are of little benefit for nutrient uptake. Regardless of the presence or absence of root hairs, plants produced average root biomass of 0.14 g per plant and exhibited 23% root mycorrhizal colonization. At later growth stages of maize, contrasting mechanisms with functional complementarity explained similar plant biomass production under P limitation: the presence of root hairs versus higher root mycorrhizal colonization (67%) favored by increased fine root diameter in absence of root hairs. P fertilization decreased the dependence of plant on specific root traits for nutrient acquisition. Through root trait plasticity, plants can minimize trade-offs for developing and maintaining functional traits, while increasing the benefit in terms of nutrient acquisition and plant growth. The present study highlights the plasticity of functional root traits for efficient nutrient acquisition strategies in agricultural systems with low nutrient availability."],["dc.identifier.doi","10.1002/jpln.201900322"],["dc.identifier.issn","1436-8730"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/16813"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/91941"],["dc.language.iso","en"],["dc.notes.intern","Migrated from goescholar"],["dc.relation.issn","1436-8730"],["dc.relation.orgunit","Fakultät für Agrarwissenschaften"],["dc.rights","CC BY 4.0"],["dc.rights.access","openAccess"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.subject","arbuscular mycorrhizal colonization; nutrient acquisition; root hairs; root morphology; roothairless3 mutant; root traits"],["dc.subject.ddc","630"],["dc.title","Root trait plasticity and plant nutrient acquisition in phosphorus limited soil"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","262"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","GCB Bioenergy"],["dc.bibliographiccitation.lastpage","271"],["dc.bibliographiccitation.volume","10"],["dc.contributor.author","Zang, Huadong"],["dc.contributor.author","Blagodatskaya, Evgenia"],["dc.contributor.author","Wen, Yuan"],["dc.contributor.author","Xu, Xingliang"],["dc.contributor.author","Dyckmans, Jens"],["dc.contributor.author","Kuzyakov, Yakov"],["dc.date.accessioned","2019-07-09T11:45:03Z"],["dc.date.available","2019-07-09T11:45:03Z"],["dc.date.issued","2017"],["dc.description.abstract","The stability and turnover of soil organic matter (SOM) are a very important but poorly understood part of carbon (C) cycling. Conversion of C3 grassland to the C4 energy crop Miscanthus provides an ideal opportunity to quantify medium-term SOM dynamics without disturbance (e.g., plowing), due to the natural shift in the d13C signature of soil C. For the first time, we used a repeated 13C natural abundance approach to measure C turnover in a loamy Gleyic Cambisol after 9 and 21 years of Miscanthus cultivation. This is the longest C3–C4 vegetation change study on C turnover in soil under energy crops. SOM stocks under Miscanthus and reference grassland were similar down to 1 m depth. However, both increased between 9 and 21 years from 105 to 140 mg C ha 1 (P < 0.05), indicating nonsteady state of SOM. This calls for caution when estimating SOM turnover based on a single sampling. The mean residence time (MRT) of old C (>9 years) increased with depth from 19 years (0–10 cm) to 30–152 years (10–50 cm), and remained stable below 50 cm. From 41 literature observations, the average SOM increase after conversion from cropland or grassland to Miscanthus was 6.4 and 0.4 mg C ha 1, respectively. The MRT of total C in topsoil under Miscanthus remained stable at ~60 years, independent of plantation age, corroborating the idea that C dynamics are dominated by recycling processes rather than by C stabilization. In conclusion, growing Miscanthus on C-poor arable soils caused immediate C sequestration because of higher C input and decreased SOM decomposition. However, after replacing grasslands with Miscanthus, SOM stocks remained stable and the MRT of old C3-C increased strongly with depth."],["dc.description.sponsorship","Open-Access-Publikationsfonds 2017"],["dc.identifier.doi","10.1111/gcbb.12485"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/15016"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/59149"],["dc.language.iso","en"],["dc.relation.issn","1757-1693"],["dc.rights.access","openAccess"],["dc.subject.ddc","630"],["dc.title","Carbon sequestration and turnover in soil under the energy crop Miscanthus: repeated 13C natural abundance approach and literature synthesis"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]