A5024862180- Soil Carbon and Nitrogen Dynamics
- Atmospheric and Environmental Gas Dynamics
- Peatlands and Wetlands Ecology
- Plant Water Relations and Carbon Dynamics
- Forest ecology and management
- Geology and Paleoclimatology Research
- Isotope Analysis in Ecology
- Soil and Water Nutrient Dynamics
- Ecology and Vegetation Dynamics Studies
- Climate variability and models
- Tree-ring climate responses
- Bioenergy crop production and management
- Hydrocarbon exploration and reservoir analysis
- Species Distribution and Climate Change
- Soil Geostatistics and Mapping
- Forest Management and Policy
- Image Processing and 3D Reconstruction
- Plant and soil sciences
- Remote Sensing in Agriculture
- Methane Hydrates and Related Phenomena
- Archaeology and ancient environmental studies
- Microbial Community Ecology and Physiology
- Plant Ecology and Soil Science
- Advanced Thermodynamics and Statistical Mechanics
- Geochemistry and Geologic Mapping
Max Planck Institute for Biogeochemistry
2016-2025
Swedish University of Agricultural Sciences
2021-2024
Industrial University of Santander
2015-2023
Max Planck Institute of Biochemistry
2022
University of Pinar del Río
2014-2021
Instituto de Investigaciones Agropecuarias
2020
Max Planck Society
2011-2015
Oregon State University
2007-2011
Universidad de Granada
2007-2008
Universidad Nacional de Colombia
2003-2007
Plant diversity strongly influences ecosystem functions and services, such as soil carbon storage. However, the mechanisms underlying positive plant effects on storage are poorly understood. We explored this relationship using long-term data from a grassland biodiversity experiment (The Jena Experiment) radiocarbon (14C) modelling. Here we show that higher increases rhizosphere inputs into microbial community resulting in both increased activity Increases were related to enhanced...
Abstract Terrestrial ecosystems sequester 2.1 Pg of atmospheric carbon annually. A large amount the terrestrial sink is realized by forests. However, considerable uncertainties remain regarding fate this over both short and long timescales. Relevant data to address these are being collected at many sites around world, but syntheses still sparse. To facilitate future synthesis activities, we have assembled a comprehensive global database for forest ecosystems, which includes budget variables...
Abstract The sensitivity of soil organic matter decomposition to global environmental change is a topic prominent relevance for the carbon cycle. Decomposition depends on multiple factors that are being altered simultaneously as result change; therefore, it important study rates with respect and interacting drivers. In this manuscript, we present an analysis potential response simultaneous changes in temperature moisture. To address problem, first theoretical framework when driving...
Understanding the controls on amount and persistence of soil organic carbon (C) is essential for predicting its sensitivity to global change. The response may depend whether C unprotected, isolated within aggregates, or protected from decomposition by mineral associations. Here, we present a synthesis relative influence environmental factors partitioning among pools, abundance in each pool (mg g-1 soil), (as approximated radiocarbon abundance) relatively unprotected particulate mineral-bound...
Soils store large quantities of carbon in the subsoil (below 0.2 m depth) that is generally old and believed to be stabilized over centuries millennia, which suggests sequestration (CS) can used as a strategy for climate change mitigation. In this article, we review main biophysical processes contribute storage mathematical models represent these processes. Our guiding objective whether process understanding soil movement vertical profile help us assess persistence at timescales relevant...
Abstract Climate change and stagnating crop yields may cause a decline of SOC stocks in agricultural soils leading to considerable CO 2 emissions reduced productivity. Regional model-based projections are needed evaluate these potential risks. In this study, we simulated the future development cropland grassland Bavaria 21 st century. Soils from 51 study sites representing most important soil classes Central Europe were fractionated derived pools used initialize RothC carbon model. For each...
Abstract. Soil organic matter decomposition is a very important process within the Earth system because it controls rates of mineralization carbon and other biogeochemical elements, determining their flux to atmosphere hydrosphere. SoilR modeling framework that contains library functions tools for soil under R environment computing. It implements variety model structures represent storage release from matter. In SoilR, represented as linear ordinary differential equations generalizes...
Comparisons among ecosystem models or dynamics along environmental gradients commonly rely on metrics that integrate different processes into a useful diagnostic. Terms such as age, turnover, residence, and transit times are often used for this purpose; however, these terms variably defined in the literature many cases, calculations ignore assumptions implicit their formulas. The aim of opinion piece was i) to make evident discrepancies incorrect use formulas, ii) highlight recent results...
We propose here a general mathematical framework to represent soil organic matter dynamics. This is expressed in the language of dynamical systems and generalizes previous modeling approaches. It based on set six basic principles about decomposition matter: (1) mass balance, (2) substrate dependence decomposition, (3) heterogeneity speed decay, (4) internal transformations matter, (5) environmental variability effects, (6) interactions. show how majority models previously proposed are...
Abstract. Determining environmental controls on soil organic matter decomposition is of importance for developing models that predict the effects change global carbon stocks. There uncertainty about rates at temperature and moisture extremes, particularly high water content levels temperatures. It uncertain whether observed declines in temperatures are due to heat capacity extracellular enzymes as predicted by thermodynamic theory, or simultaneous moisture. also oxygen limits contents. Here...
The question of why some types organic matter are more persistent while others decompose quickly in soils has motivated a large amount research recent years. Persistence is commonly characterized as turnover or mean residence time soil (SOM). However, and times ambiguous measures persistence, because they could represent the concept either age transit time. To disambiguate these concepts propose metric to assess SOM we calculated distributions for wide range carbon models. Furthermore, show...
Abstract. Radiocarbon is a critical constraint on our estimates of the timescales soil carbon cycling that can aid in identifying mechanisms stabilization and destabilization improve forecast response to management or environmental change. Despite wealth radiocarbon data have been reported over past 75 years, ability apply these global-scale questions limited by capacity synthesize compare measurements generated using variety methods. Here, we present International Soil Database (ISRaD;...
Trees contain non-structural carbon (NSC), but it is unclear for how long these reserves are stored and to what degree they used support plant activity. We radiocarbon (14C) show that the (C) in stemwood NSC can achieve ages of several decades California oaks. separated into two fractions: soluble (∼50% sugars) insoluble (mostly starch) NSC. Soluble contained more C than NSC, we found no consistent trend amount either pool with depth stem. There was systematic difference age between...
Abstract We compare sustainably managed with unmanaged forests in terms of their contribution to climate change mitigation based on published data. For forests, accounting carbon (C) storage ecosystem biomass and products as required by the United Nations Framework Convention Climate Change is not sufficient quantify mitigation. The ultimate value its use for biomaterials bioenergy. Taking Germany an example, we show that average removals wood from are higher than stated official reports,...
Abstract. Ecosystems play a fundamental role in climate change mitigation by photosynthetically fixing carbon from the atmosphere and storing it for period of time organic matter. Although impacts emissions sources can be quantified global warming potentials, appropriate formal metrics to assess benefits removals sinks are unclear. We introduce here benefit sequestration (CBS), metric that quantifies radiative effect dioxide retaining an ecosystem before releasing back as result respiratory...
Organic carbon (OC) association with soil minerals stabilizes OC on timescales reflecting the strength of mineral–C interactions. We applied ramped thermal oxidation to subsoil B horizons different associations separate according increasing temperature oxidation, i.e. activation energy. Generally, released at lower temperatures was richer in bioavailable forms like polysaccharides, while higher more aromatic. associated pedogenic oxides and had a narrow range 14 C content. By contrast,...