Susan E. Trumbore

Susan E. Trumbore
Max Planck Institute for Biogeochemistry Jena | BGC · Department of Biogeochemical Processes

PhD Geochemistry Columbia University

About

614
Publications
122,138
Reads
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40,122
Citations
Additional affiliations
January 2012 - December 2013
Max-Planck-Institut für Biogeochemie Jena
January 1995 - December 2012
University of California, Irvine
July 1992 - present
University of California
Position
  • Professor
Education
September 1981 - January 1989
Columbia University
Field of study
  • Geochemistry
September 1977 - May 1981
University of Delaware
Field of study
  • Geology

Publications

Publications (614)
Article
Full-text available
The terrestrial subsurface contains nearly all of Earth’s freshwater reserves and harbours the majority of our planet’s total prokaryotic biomass. Although genetic surveys suggest these organisms rely on in situ carbon fixation, rather than the photosynthetically derived organic carbon transported from surface environments, direct measurements of c...
Conference Paper
Full-text available
With climate and land use changes, it is becoming increasingly important to understand not only how much carbon is and will be stored in soils, but also how long this C will remain in soils. Estimates of C age can provide useful information about the timescales on which C will respond to such changes. It is generally accepted that the interaction o...
Preprint
Globally, soil temperature to 1 m depth is predicted to be up to 4 °C warmer by the end of this century, with pronounced effects expected in temperate forest regions. Increased soil temperatures will potentially increase the release of CO2 from temperate forest soils, resulting in important positive feedback on climate change. Dark CO2 fixation by...
Article
Full-text available
Plain Language Summary Thank you to the 164 people who reviewed manuscripts for AGU Advances in 2021.
Article
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Plain Language Summary Radiocarbon (¹⁴C) is a radioactive isotope of carbon prominent in environmental sciences for tracing the dynamics of ecosystems, especially as recent changes in atmospheric radiocarbon allow tracking excess ¹⁴C created by nuclear weapons testing in the atmosphere on timescales shorter than what can be determined using radioac...
Conference Paper
Full-text available
Convection plays an important role in determining Amazon weather and climate. Variations in momentum fluxes and sensible heat associated with turbulence regimes influence the propagation of downdrafts, which have high destructive power and can cause damage and mortality from one to millions of trees. Windthrows are related to variations in tree spe...
Article
Soils are the largest terrestrial organic carbon pool and the largest terrestrial source of atmospheric CO2. Non-phototrophic CO2 fixation by microbes re-fixes and recycles CO2 respired in soils. Our previous study showed that in temperate deciduous forest soil profiles, rates of dark CO2 fixation were proportional to microbial biomass, irrespectiv...
Article
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Key Points Editors‐in‐chief of AGU journals stress urgent need for greening economy Cross‐sector solutions‐based science must supplement basic research AGU is adding solutions‐based community science journal to portfolio
Preprint
Full-text available
The terrestrial subsurface contains nearly all of Earth’s freshwater reserves ¹ and harbors upwards of 60% of our planet’s total prokaryotic biomass 2,3 . While genetic surveys suggest these organisms rely on in situ carbon fixation, rather than the translocation of photosynthetically derived organic carbon 4–6 , corroborating measurements of carbo...
Article
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Managed grasslands have the potential to store carbon (C) and partially mitigate climate change. However, it remains difficult to predict potential C storage under a given soil or management practice. To study C storage dynamics due to long-term (1952-2009) phosphorus (P) fertilizer and irrigation treatments in New Zealand grasslands, we measured r...
Article
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The radiocarbon signature of respired CO2 (∆14C-CO2) measured in laboratory soil incubations integrates contributions from soil carbon pools with a wide range of ages, making it a powerful model constraint. Incubating archived soils enriched by “bomb-C” from mid-20th century nuclear weapons testing would be even more powerful as it would enable us...
Article
Climate change is expected to pose a global threat to forest health by intensifying extreme events like drought and insect attacks. Carbon allocation is a fundamental process that determines the adaptive responses of long-lived late-maturing organisms like trees to such stresses. However, our mechanistic understanding of how trees coordinate and se...
Article
Full-text available
Soil organic carbon (SOC) stabilization and destabilization has been studied intensively. Yet, the factors which control SOC content across scales remain unclear. Earlier studies demonstrated that soil texture and geochemistry strongly affect SOC content. However, those findings primarily rely on data from temperate regions where soil mineralogy, w...
Article
Full-text available
Little is known about the sources and age of C respired by tree roots. Previous research in stems identified two functional pools of non-structural carbohydrates (NSC): an “active” pool supplied directly from canopy photo-assimilates supporting metabolism and a “stored” pool used when fresh C supplies are limited. We compared the C isotope composit...
Article
Full-text available
The dynamics of forest recovery after windthrows (i.e., broken or uprooted trees by wind) are poorly understood in tropical forests. The Northwestern Amazon (NWA) is characterized by a higher occurrence of windthrows, greater rainfall, and higher annual tree mortality rates (~2%) than the Central Amazon (CA). We combined forest inventory data from...
Preprint
Full-text available
Little is known about the sources and age of C respired from tree roots. Previous research in tree stems has identified two functional pools of non-structural carbohydrates (NSC): an ‘active’ pool supplied directly from canopy photo-assimilates that supports metabolism and a ‘stored’ pool used when fresh C supplies are limited. We compared the C is...
Conference Paper
Full-text available
Recent compilations of global soil radiocarbon data suggest that current Earth System Models underestimate the mean age of soil carbon (C). The discrepancy between data-derived estimates and model calculations might be due to an inadequate representation of processes that control C persistence in soils-especially in understudied regions. Here, we i...
Article
Full-text available
Thank you to the reviewers of AGU Advances. In 2020, we all faced the enormous and unexpected challenges of the Covid‐19 pandemic, with its host of new and competing demands on our time. Thus, we are especially grateful to the 154 people who provided reviews for AGU Advances and helped our fledgling journal complete its first year. Peer‐review is e...
Article
Full-text available
As individuals serving on the AGU Advances editorial board, we condemn racism, affirm that Black Lives Matter, and recognize that inequality is built into the systems that have allowed us to prosper. We aim to persistently foster discussion about racism, inequity, and the need to make our community more diverse and inclusive. This will help AGU Adv...
Article
1. The Balbina hydropower dam in the Central Amazon basin, established in the Uatumã River in the 1980s, is emblematic for its socio-environmental disaster. Its environmental impacts go far beyond the reservoir and dam, however, affecting the floodplain forests (igapó) in the downstream area (dam shadow), which have been assessed using a transdisci...
Article
Full-text available
1. The Balbina hydropower dam in the Central Amazon basin, established in the Uatumã River in the 1980s, is emblematic for its socio-environmental disaster. Its environmental impacts go far beyond the reservoir and dam, however, affecting the floodplain forests (igapó) in the downstream area (dam shadow), which have been assessed using a transdisci...
Article
Full-text available
The largest share of total soil organic carbon (OC) is associated with minerals. However, the factors that determine the amount and turnover of slower- versus faster-cycling components of mineral-associated carbon (MOC) are still poorly understood. Bioavailability of MOC is thought to be regulated by desorption, which can be facilitated by displace...
Article
Full-text available
Non‐structural carbohydrate (NSC) and lipid storage in tree stems play an important role in metabolism and growth. Their spatial distribution in wood may explain species‐specific differences in carbon storage dynamics, growth and survival. However, quantitative information on the spatial distribution of starch and lipids in wood is sparse due to me...
Article
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Global warming is accompanied by increasing water stress across much of our planet. We studied soil biological processes and changes in soil organic carbon (SOC) storage in 30 Hungarian oak forest sites in the Carpathian Basin along a climatic gradient (mean annual temperature (MAT) 9.6–12.1 °C, mean annual precipitation (MAP) 545–725 mm) but on si...
Article
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The initial online publication contained a typesetting mistake in the author information. The original article has been corrected.
Article
Full-text available
Globally, soils store two to three times as much carbon as currently resides in the atmosphere, and it is critical to understand how soil greenhouse gas (GHG) emissions and uptake will respond to ongoing climate change. In particular, the soil-toatmosphere CO2 flux, commonly though imprecisely termed soil respiration (RS), is one of the largest car...
Article
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The C5 hemiterpenes isoprene and 2-methyl-3-buten-2-ol (MBO) are important biogenic volatiles emitted from terrestrial vegetation. Isoprene is emitted from many plant groups, especially trees such as Populus , while emission of MBO is restricted to certain North American conifers, including species of Pinus . MBO is also a pheromone emitted by seve...
Article
Ants that build long-lasting mounds and move large amounts of mineral soil may influence the composition and fluxes of soil solutions, and thus soil nutrient cycling. However, studies quantifying such effects are scarce. In central Europe, the yellow meadow ant (Lasius flavus) is a common species that changes the character of extensively managed gr...
Preprint
Full-text available
Earlier studies have demonstrated that soil texture and geochemistry strongly affect soil organic carbon (SOC) content. However, those findings primarily rely on data from temperate regions with soil mineralogy, weathering status and climatic conditions that generally differ from tropical and subtropical regions. We investigated soil properties and...
Article
Full-text available
Soils contain more carbon than the atmosphere and vegetation combined. An increased flow of carbon from the atmosphere into soil pools could help mitigate anthropogenic emissions of carbon dioxide and climate change. Yet we do not know how quickly soils might respond because the age distribution of soil carbon is uncertain. Here we used 789 radioca...
Article
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Selective logging, fragmentation, and understory fires directly degrade forest structure and composition. However, studies addressing the effects of forest degradation on carbon, water, and energy cycles are scarce. Here, we integrate field observations and high‐resolution remote sensing from airborne lidar to provide realistic initial conditions t...
Article
Soils substantially contribute to the terrestrial fluxes of CO2 to the atmosphere. Dark CO2 fixation, the microbial process by which pore space CO2 is reduced to organic matter, may recycle and trap some of the CO2 respired in soils before it can escape to the atmosphere. To evaluate its potential significance for global temperate forest soil carbo...
Article
Atmospheric carbon dioxide concentration ([CO2]) is increasing, which increases leaf‐scale photosynthesis and intrinsic water‐use efficiency. These direct responses have the potential to increase plant growth, vegetation biomass, and soil organic matter; transferring carbon from the atmosphere into terrestrial ecosystems (a carbon sink). A substant...
Preprint
Full-text available
The largest share of total soil organic carbon (OC) is associated with minerals. The portions and turnover of stable and faster cycling mineral-associated carbon (MOC) as well as the determining factors across different soils and soil depths are still unknown. Bioavailability of MOC is supposedly regulated by desorption but instead, its stability w...
Article
Full-text available
As direct real-time analysis techniques, selective ion flow tube mass spectrometry (SIFT-MS) and proton-transfer reaction mass spectrometry (PTR-MS) provide online measurement of volatile organic compounds (VOCs). Both techniques are widely used across several disciplines, e.g., atmospheric chemistry, food science, and medicine. However, the humidi...
Article
Full-text available
The long‐lived tree species Eschweilera tenuifolia (O. Berg) Miers is characteristic of oligotrophic Amazonian black‐water floodplain forests (igapó ), seasonally inundated up to 10 months per year, often forming monodominant stands. We investigated E. tenuifolia ' growth and mortality patterns in undisturbed (Jaú National Park ‐ JNP) and disturbed...
Article
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Members of the editorial board of AGU Advances express their appreciation to those who served as peer reviewers for the journal in its inaugural year.
Article
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Soil carbonates (i.e., soil inorganic carbon or SIC) represent more than a quarter of the terrestrial carbon pool and are often considered to be relatively stable, with fluxes significant only on geologic timescales. However, given the importance of climatic water balance on SIC accumulation, we tested the hypothesis that increased soil water stora...
Conference Paper
Full-text available
Soil organic carbon (SOC) is a key component of terrestrial ecosystems. Experimental studies have shown that soil texture and geochemistry have a strong effect on carbon stocks. However, those findings primarily rely on data from temperate regions or use model approaches that are often based on limited data from tropical and subtropical regions. He...
Article
Full-text available
A mechanistic understanding of how trees balance the trade-offs between growth, storage and defense is limited but crucial for predicting tree responses to abiotic and biotic stresses. Here we investigated how trees allocate storage of non-structural carbohydrates (NSC) to growth, constitutive and induced secondary metabolites (SM). We exposed Norw...
Article
Convergent, high-impact research that contributes to society is the hallmark of AGU’s new flagship journal.
Article
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AGU Advances is a premier open access journal with transparent review and with commentary accompanying the research articles that places their results in a wider context.
Article
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After the ice caps, tropical forests are globally the most threatened terrestrial environments. Modern trees are not just witnesses to growing contemporary threats but also legacies of past human activity. Here, we review the use of dendrochronology, radiocarbon analysis, stable isotope analysis, and DNA analysis to examine ancient tree management....
Article
Full-text available
In trees, the use of non‐structural carbon (NSC) under limiting conditions impacts the age structure of the NSC pools. We compared model predictions of NSC ages and transit times for Pinus halepensis, Acer rubrum and Pinus taeda, to understand differences in carbon storage dynamics in species with different leaf phenology and growth environments. W...
Research Proposal
The Amazon plays a major role in the global biogeochemical cycles of greenhouse gases – e.g., variations in carbon fluxes in tropical land areas are an important driver for interannual fluctuations in the global atmospheric CO2 growth rate. Other important greenhouse gases, such as methane (CH4) and nitrous oxide (N2O) have large natural sources in...
Research Proposal
In cooperation with the Friedrich Schiller University Jena, the Max Planck Institute for Biogeochemistry houses a unique and flexible research program that grants German and foreign students a broad selection of learning opportunities while still maintaining a research focus. The IMPRS-gBGC offers a PhD program specializing in global biogeochemistr...
Article
Full-text available
Radiocarbon is a critical constraint on our estimates of the timescales of soil carbon cycling that can aid in identifying mechanisms of carbon stabilization and destabilization and improve the forecast of soil carbon response to management or environmental change. Despite the wealth of soil radiocarbon data that have been reported over the past 75...
Preprint
The long-living tree species Eschweilera tenuifolia (O. Berg) Miers (Lecythidaceae) is characteristic to oligotrophic floodplain forests (igapo) influenced by a regular and predictable flood-pulse. This species preferentially occurs at macrohabitats flooded up to 10 months per year forming monodominant stands. We aimed to analyze the growth and mor...
Preprint
Full-text available
Abstract. As direct real-time analysis techniques, Selective Ion Flow Tube Mass Spectrometry (SIFT-MS) and Proton-Transfer Reaction Mass Spectrometry (PTR-MS) provide on-line measurement of volatile organic compounds (VOCs). Both techniques are widely-used across several disciplines, e.g. atmospheric chemistry, food science and medicine. However, t...
Article
Full-text available
Featuring high-impact papers and a streamlined process, AGU’s new journal is ready to launch.
Article
Late frost can destroy the photosynthetic apparatus of trees. We hypothesized that this can alter the normal cyclic dynamics of C‐reserves in the wood. We measured soluble sugar concentrations and radiocarbon signatures (Δ14C) of soluble non‐structural carbon (NSC) in woody tissues sampled from a Mediterranean beech forest that was completely defol...
Article
Full-text available
In the mostly pristine Congo Basin, agricultural land-use change has intensified in recent years. One potential and understudied consequence of this deforestation and conversion to agriculture is the mobilization and loss of organic matter from soils to rivers as dissolved organic matter. Here, we quantify and characterize dissolved organic matter...
Article
We evaluated the influence of the rhizosphere, soil depth, and altitude on the amount and nature of the density separated soil organic matter (SOM) pools. Samples were collected from the A and AB horizons of European beech (Fagus sylvatica L.) forest soils located at two altitudes (800 and 1000 m) along 1° of latitudinal gradient in central Italy,...
Article
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We assessed the feeding habits of the Amazonian manatee inhabiting blackwater (Negro River) and clearwater (Tapajós River) igapós (floodplains) using δ¹³C and δ¹⁵N of dentin and bone collagen from different ontogenetic classes (nursing calves, juveniles, and adults). Within an individual, the dentine δ¹³C and δ¹⁵N values did not vary with tooth pos...
Article
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Drought, fire, and windstorms can interact to degrade tropical forests and the ecosystem services they provide, but how these forests recover after catastrophic disturbance events remains relatively unknown. Here, we analyze multi-year measurements of vegetation dynamics and function (fluxes of CO2 and H2 O) in forests recovering from 7 years of co...
Article
Full-text available
Radiocarbon is a critical constraint on our estimates of the timescales of soil carbon cycling that can aid in identifying mechanisms of carbon stabilization and destabilization, and improve forecast of soil carbon response to management or environmental change. Despite the wealth of soil radiocarbon data that has been reported over the past 75 yea...