Browsing by Author "Lajtha, Kate"
Now showing items 1-20 of 20
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Alterations in forest detritus inputs influence soil carbon concentration and soil respiration in a Central-European deciduous forest
(Elsevier, 2014)In a Quercetum petraeaeecerris forest in northeastern Hungary, we examined effects of litter input alterations on the quantity and quality soil carbon stocks and soil CO2 emissions. Treatments at the Síkf}okút DIRT (Detritus ... -
The carbon quality-temperature hypothesis does not consistently predict temperature sensitivity of soil organic matter mineralization in soils from two manipulative ecosystem experiments
(Springer, 2017-10-28)The temperature sensitivity of soil organic matter (SOM) decomposition is a source of uncertainty in models of soil-climate feedbacks. However, empirical studies have given contradictory results concerning the temperature ... -
Changes to particulate versus mineral-associated soil carbon after 50 years of litter manipulation in forest and prairie experimental ecosystems
(Springer, 2014-06)Models of ecosystem carbon (C) balance generally assume a strong relationship between NPP, litter inputs, and soil C accumulation, but there is little direct evidence for such a coupled relationship. Using a unique 50-year ... -
Competing Processes Drive the Resistance of Soil Carbon to Alterations in Organic Inputs
(Frontiers Media, 2021-04-09)Protecting existing soil carbon (C) and harnessing the C sequestration potential of soils require an improved understanding of the processes through which soil organic matter accumulates in natural systems. Currently, ... -
Contribution of aboveground litter, belowground litter, and rhizosphere respiration to total soil CO2 efflux in an old growth coniferous forest
(Springer, 2005)In an old growth coniferous forest located in the central Cascade Mountains, Oregon, we added or removed above ground litter and terminated live root activity by trenching to determine sources of soil respiration. Annual ... -
The Detrital Input and Removal Treatment (DIRT) Network
(Elsevier, 2017)No abstract is available. -
The detrital input and removal treatment (DIRT) network: Insights into soil carbon stabilization
(Elsevier, 2018-11-01)Ecological research networks functioning across climatic and edaphic gradients are critical for improving predictive understanding of biogeochemical cycles at local through global scales. One international network, the ... -
Effects of Detrital Inputs and Roots on Carbon Saturation Deficit of a Temperate Forest Soil
(Soil Science Society of America, 2014-07-14)Soil C sequestration has been proposed as a tool for addressing climate change. However, models used to predict soil C sequestration do not account for C saturation and functional differences among soil C pools. In this ... -
Increased coniferous needle inputs accelerate decomposition of soil carbon in an old-growth forest
(Elsevier, 2009)Changes in temperature, precipitation, and atmospheric carbon dioxide (CO2) concentration that are expected in the coming decades will have profound impacts on terrestrial ecosystem net primary production (NPP). Nearly all ... -
Isotopic analysis of respired CO2 during decomposition of separated soil organic matter pools
(Elsevier, 2006-11-11)A detailed understanding of the processes that contribute to the δ13C value of respired CO2 is necessary to make links between the isotopic signature of CO2 efflux from the soil surface and various sources within the soil ... -
Lignin properties in topsoils of a beech/oak forest after 8 years of manipulated litter fall: relevance of altered input and oxidation of lignin
(Springer Science + Business Media Dordrecht, 2013)Background and aims We studied the response of lignin oxidation in soils of a beech/oak forest to changes in litter fall. Additionally we considered possible factors in lignin oxidation, including altered (i) input of ... -
Litter and Root Manipulations Provide Insights into Soil Organic Matter Dynamics and Stability
(Soil Science Society of America, 2014-08-18)Understanding controls on C stored in soil organic matter (SOM) is of critical importance to models of biospheric C sequestration. Although ecosystem C models assume a strong relationship between plant litter inputs and ... -
Litter Input Controls on Soil Carbon in a Temperate Deciduous Forest
(Soil Science Society of America, 2014-07-14)Above- and belowground litter inputs in a temperate deciduous forest were altered for 20 yr to determine the importance of leaves and roots on soil C and soil organic matter (SOM) quantity and quality. Carbon and SOM ... -
Long-term litter manipulation alters soil organic matter turnover in a temperate deciduous forest
(Elsevier, 2017-07-27)Understanding soil organic matter (OM) biogeochemistry at the molecular-level is essential for assessing potential impacts from management practices and climate change on shifts in soil carbon storage. Biomarker analyses ... -
Long-Term Nitrogen Addition Alters the Composition of Soil-Derived Dissolved Organic Matter
(ACS Publications, 2019-12-23)Forest soil dissolved organic matter (DOM) is a major source of terrigenous dissolved organic carbon (DOC) that is an important component of biogeochemical cycles. While many studies have shown that DOM dynamics are regulated ... -
Long-term nitrogen addition suppresses microbial degradation, enhances soil carbon storage, and alters the molecular composition of soil organic matter
(Springer Verlag, 2019-01-01)Forest soil organic carbon (SOC) is one of the largest reservoirs of terrestrial carbon (C) and is a major component of the global C cycle. Yet there is still uncertainty regarding how ecosystems, and the SOC they store, ... -
The Path From Litter to Soil: Insights Into Soil C Cycling From Long‐Term Input Manipulation and High‐Resolution Mass Spectrometry
(American Geophysical Union, 2018-05)The path of carbon (C) from plant litter to soil organic matter (SOM) is key to understanding how soil C stocks and microbial decomposition will respond to climate change and whether soil C sinks can be enhanced. Long‐term ... -
Sequential density fractionation across soils of contrasting mineralogy: evidence for both microbial- and mineralcontrolled soil organic matter stabilization
(Springer Science + Business Media B.V., 2009)Sequential density fractionation separated soil particles into “light” predominantly mineral-free organic matter vs. increasingly “heavy” organo-mineral particles in four soils of widely differing mineralogy. With increasing ... -
Sources of plant‐derived carbon and stability of organic matter in soil: implications for global change
(Wiley Blackwell, 2009-07)Alterations in forest productivity and changes in the relative proportion of above‐ and belowground biomass may have nonlinear effects on soil organic matter (SOM) storage. To study the influence of plant litter inputs on ... -
Twenty Years of Litter and Root Manipulations: Insights into Multi-Decadal SOM Dynamics
(Soil Science Society of America, 2015)An understanding of the controls on carbon (C) stored in soil organic matter is of critical importance to models of biospheric C sequestration. Although most models of ecosystem C balance assume a strong relationship ...
