MARC KRAMER results 15
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TRY plant trait database – enhanced coverage and open accessNARA Subscribed
Plant traits—the morphological, anatomical, physiological, biochemical and phenological characteristics of plants—determine how plants respond to environmental factors, affect other trophic levels, and influence ecosystem properties and their benefits and detriments to people. Plant trait data thus represent the basis for a vast area of research spanning from evolutionary biology, community and functional ecology, to biodivers...
Controls on carbon storage and weathering in volcanic soils across a high‐elevation climate gradient on Mauna Kea, HawaiiNARA Subscribed
Volcanic ash soils retain the largest and most persistent soil carbon pools of any ecosystem. However, the mechanisms governing soil carbon accumulation and weathering during initial phases of ecosystem development are not well understood. We examined soil organic matter dynamics and soil development across a high‐altitude (3,560–3,030 m) 20‐kyr climate gradient on Mauna Kea in Hawaii. Four elevation sites were selected (~250–...
Surficial gains and subsoil losses of soil carbon and nitrogen during secondary forest developmentNARA Subscribed
Reforestation of formerly cultivated land is widely understood to accumulate above‐ and belowground detrital organic matter pools, including soil organic matter. However, during 40 years of study of reforestation in the subtropical southeastern USA , repeated observations of above‐ and belowground carbon documented that significant gains in soil organic matter ( SOM ) in surface soils (0–7.5 cm) were offset by significant SOM...
Long‐term carbon storage through retention of dissolved aromatic acids by reactive particles in soilNARA Subscribed
Soils retain large quantities of carbon, thereby slowing its return to the atmosphere. The mechanisms governing organic carbon sequestration in soil remain poorly understood, yet are integral to understanding soil‐climate feedbacks. We evaluated the biochemistry of dissolved and solid organic carbon in potential source and sink horizons across a chronosequence of volcanic soils in Hawai'i. The soils are derived from similar ba...
Soil carbon turnover models generally divide soil carbon into pools with varying intrinsic decomposition rates. Although these decomposition rates are modified by factors such as temperature, texture, and moisture, they are rationalized by assuming chemical structure is a primary controller of decomposition. In the current work, we use near edge X‐ray absorption fine structure (NEXAFS) spectroscopy in combination with differen...
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