Terrestrial Ecosystem Research, University of Vienna |

Time 2021-11-21 15:28:38

Web Name: Terrestrial Ecosystem Research, University of Vienna |

WebSite: http://chemsrv0.pph.univie.ac.at

ID:243793

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Metamenu University of ViennaCentre for Microbiology and Environmental Systems Science SILVER Navigation HomeNewsPeopleStaffAlumniOpen positionsResearchPublicationsLecture seriesAnnual reportsBlog

Our new home,

from summer 2021

Global Warming:

the threat of a permafrost Carbon – climate feedback

We develop and improve

stable isotopes techniques for ecological applications

Plants, fungi and bacteria interact

at the root-soil interface

Probing the future:

Climate Change experiments

Soil is fundamental to human life

Tropical rainforests

hold the key to global net primary productivity

TER News Andreas Richter is Highly Cited Researcher 2021 16.11.21 News

TER member Andreas Richter is - just as in the past years - among the most cited researchers in the world. Alongside his CMESS colleagues Holger Daims (DOME), Thomas Rattei...

More information on the Highly Cited Researchers list Press release (German) Article in Der Standard (German) Congratulations - MSc Felix Spiegel 09.11.21 People

Congratulations to Felix Spiegel, who successfully defended his MSc thesis on Monday 8th November 2021.
His thesis on “How does long-term fertilization regimes affect microbial N-processing and community composition...

Ecological memory of recurrent drought modifies soil processes via changes in soil microbial community 09.09.21 Publication

Climate change is altering the frequency and severity of drought events. Recent evidence indicates that drought may produce legacy effects on soil microbial communities. However, it is unclear whether precedent...

Nature Communications Blog Nature Ecology ...

sciencedirect.com

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Latest publications Tree Species and Epiphyte Taxa Determine the “Metabolomic niche” of Canopy Suspended Soils in a Species-Rich Lowland Tropical Rainforest

Tropical forests are biodiversity hotspots, but it is not well understood how this diversity is structured and maintained. One hypothesis rests on the generation of a range of metabolic niches, with varied composition, supporting a high species diversity. Characterizing soil metabolomes can reveal fine-scale differences in composition and potentially help explain variation across these habitats. In particular, little is known about canopy soils, which are unique habitats that are likely to be sources of additional biodiversity and biogeochemical cycling in tropical forests. We studied the effects of diverse tree species and epiphytes on soil metabolomic profiles of forest floor and canopy suspended soils in a French Guianese rainforest. We found that the metabolomic profiles of canopy suspended soils were distinct from those of forest floor soils, differing between epiphyte-associated and non-epiphyte suspended soils, and the metabolomic profiles of suspended soils varied with host tree species, regardless of association with epiphyte. Thus, tree species is a key driver of rainforest suspended soil metabolomics. We found greater abundance of metabolites in suspended soils, particularly in groups associated with plants, such as phenolic compounds, and with metabolic pathways related to amino acids, nucleotides, and energy metabolism, due to the greater relative proportion of tree and epiphyte organic material derived from litter and root exudates, indicating a strong legacy of parent biological material. Our study provides evidence for the role of tree and epiphyte species in canopy soil metabolomic composition and in maintaining the high levels of soil metabolome diversity in this tropical rainforest. It is likely that a wide array of canopy microsite-level environmental conditions, which reflect interactions between trees and epiphytes, increase the microscale diversity in suspended soil metabolomes.

Gargallo-Garriga A, Sardans J, Alrefaei AF, Klem K, Fuchslueger L, Ramírez-Rojas I, Donald J, Leroy C, Van Langenhove L, Verbruggen E, Janssens IA, Urban O, Peñuelas J2021 - Metabolites, 11: Article 718 Responses of grassland soil CO2 production and fluxes to drought are shifted in a warmer climate under elevated CO2

As the climate warms, drought events are expected to increase in intensity and frequency, with consequences for the carbon cycle. Soil respiration (Rs) accounts for the largest flux of CO2 from terrestrial ecosystems to the atmosphere. While the drought responses of Rs have been well studied, it is uncertain how they will be modified in a future world, when higher temperatures will occur in combination with elevated atmospheric CO2 concentrations. In a global change experiment in a managed temperate grassland, we studied drought and post-drought responses of Rs dynamics under current versus likely future conditions (+3°, +300 ppm CO2). Furthermore, to understand the soil CO2 production (Ps) and transport dynamics underlying Rs fluxes we continuously monitored in-situ soil CO2 concentrations across the soil profile. Our results show that Rs was higher and that drought-induced reductions in Rs were delayed under future compared to current conditions. Peak drought reductions and post-drought pulses of Rs were more pronounced in the future scenario. Annual Rs was reduced by drought only under current but not under future conditions. An in-depth analysis of soil CO2 gradients and fluxes across the soil profile showed that elevated CO2 stimulated Ps primarily in the main rooting horizon and that warming affected Ps also in deeper soil layers. We found that both in the current and the future scenario drought led to the strongest reductions of Ps in the most productive soil layers, which also exhibited the largest depletion of soil moisture. We conclude that a future warmer climate under elevated CO2 amplifies soil CO2 production and efflux and their peak drought and post-drought responses, but delays the onset of the drought responses and thereby eliminates the overall drought effect on annual soil CO2 emissions.

Reinthaler D, Harris E, Richter A, Herndl M, Pötsch E, Wachter H, Bahn M2021 - Soil Biology and Biochemistry, 163: Article 108436 Sensitivity and specificity of the antigen-based anterior nasal self-testing programme for detecting SARS-CoV-2 infection in schools, Austria, March 2021

This study evaluates the performance of the antigen-based anterior nasal screening programme implemented in all Austrian schools to detect SARS-CoV-2 infections. We combined nationwide antigen-based screening data obtained in March 2021 from 5,370 schools (Grade 1-8) with an RT-qPCR-based prospective cohort study comprising a representative sample of 244 schools. Considering a range of assumptions, only a subset of infected individuals are detected with the programme (low to moderate sensitivity) and non-infected individuals mainly tested negative (very high specificity).

Willeit P, Bernar B, Zurl C, Al-Rawi M, Berghold A, Bernhard D, Borena W, Doppler C, Kerbl R, Köhler A, Krause R, Lamprecht B, Pröll J, Schmidt H, Steinmetz I, Stelzl E, Stoiber H, von Laer D, Zuber J, Müller T, Strenger V, Wagner M2021 - Euro Surveill., 26: Article 2100797

 
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Lecture series Microbial ecology of nitrogen cycling in paddy soils Yong-Guan ZhuResearch Centre for Eco-Environmental Sciences Institute of Urban Environment, Chinese Academy of Sciences27.06.201909:00 hLecture Hall HS 5, UZA2 (Geocentre), Althanstrasse 14, 1090 Vienna How to meet the Paris 2°C target: Which are the main constraints that will need to be overcome? Ivan JanssensCentre of Excellence of Global Change Ecology, University of Antwerp, Belgium15.11.201812:00 hLecture Hall HS2 (UZA 1), Althanstraße 14, 1090 Vienna Soil C dynamics –when are microbial communities in control? Naoise NunanInstitute of Ecology and Environmental Sciences IEES Paris, France25.10.201812:00 hLecture Hall HS2 (UZA 1), Althanstraße 14, 1090 Vienna

 
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