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The climate benefit of sequestration in soils for warming mitigationAbstract Soils are an enticing reservoir for nature-based climate solutions, but long timescales are required to store amounts of C of relevance to mitigate warming acknowledging its impermanence. Scientific clarity on the controlling factors in soil C persistence should help to disambiguate debates related to permanence in the climate policy domain. However, anothe... ...
Springer Science and Business Media LLC - - 2022
Magnitude and variations of groundwater seepage along a Florida marine shoreline
Springer Science and Business Media LLC - Tập 38 - Trang 189-205 - 1997
Direct groundwater inputs are receiving increasingattention as a potential source of nutrients and otherdissolved constituents to the coastal ocean. Seepageinto St. George Sound, Florida was measuredextensively from 1992 to 1994 using seepage meters. Spatial and temporal variations were documented alonga 7-km stretch of coastline and up to 1 km from shore. Measurements were made at 3 transects per......
Decadal cycling within long-lived carbon pools revealed by dual isotopic analysis of mineral-associated soil organic matter
Springer Science and Business Media LLC - Tập 112 - Trang 111-125 - 2011
Long-lived soil organic matter (SOM) pools are critical for the global carbon (C) cycle, but challenges in isolating such pools have inhibited understanding of their dynamics. We physically isolated particulate (>53 μm), silt-, and clay-sized organic matter from soils collected over two decades from a perennial C3 grassland established on long-term agricultural soil with a predominantly C4 isotopi......
An exploration of how litter controls drainage water DIN, DON and DOC dynamics in freely draining acid grassland soils
Springer Science and Business Media LLC - Tập 107 - Trang 165-185 - 2010
Surface and subsurface litter fulfil many functions in the biogeochemical cycling of C and N in terrestrial ecosystems. These were explored using a microcosm study by monitoring dissolved inorganic nitrogen (DIN) (NH4
+–N + NO3
−–N), dissolved organic nitrogen (DON) and dissolved organic carbon (DOC) concentrations and fluxes in drainage water under ......
Mechanisms and magnitude of dissolved silica release from a New England salt marsh
Springer Science and Business Media LLC - Tập 161 - Trang 251-271 - 2022
Salt marshes are sites of silica (SiO2) cycling and export to adjacent coastal systems, where silica availability can exert an important control over coastal marine primary productivity. Mineral weathering and biologic fixation concentrate silica in these systems; however, the relative contributions of geologic versus biogenic silica dissolution to this export are not known. We collected water sam......
Four years of litter input manipulation changes soil microbial characteristics in a temperate mixed forest
Springer Science and Business Media LLC - Tập 154 - Trang 371-383 - 2021
Aboveground litter not only is an important source of nutrients to soil microbes but also regulates the microclimate in topsoil. How the changes in aboveground litter quantity would affect the microbial biogeochemical cycles is still unclear. Here we conducted a litter input manipulation experiment in a temperate mixed forest to investigate how different amounts of litter input affect soil organic......
A record of N2O and CH4 emissions and underlying soil processes of Korean rice paddies as affected by different water management practices
Springer Science and Business Media LLC - - 2013
Rice is staple food of half of mankind and paddy soils account for the largest anthropogenic wetlands on earth. Ample of research is being done to find cultivation methods under which the integrative greenhouse effect caused by emitted CH4 and N2O would be mitigated. Whereas most of the research focuses on quantifying such emissions, there is a lack of studies on the biogeochemistry of paddy soils......
Emission of gaseous nitrogen oxides from an extensively managed grassland in NE Bavaria, Germany.
Springer Science and Business Media LLC - Tập 63 - Trang 229-247 - 2003
In a one-year field study (June 1998 to April 1999), we quantified N2O and NOx emissions from an extensively managed grassland in NE Bavaria (Germany) in unfertilized controls and after application of slurry or mineral N (calcium ammonium nitrate), respectively. Emissions were measured every 2–4 weeks, with additional daily measurements for 10 days after each fertilizer application. The closed cha......
Effects of pH and calcium on soil organic matter dynamics in Alaskan tundra
Springer Science and Business Media LLC - Tập 111 - Trang 569-581 - 2011
In Northern Alaska (AK), large variation in biogeochemical cycling exists among landscapes underlain by different aged geologic substrates deposited throughout the Pleistocene. Younger, less weathered landscapes have higher pH (6.5 vs. 4.5), ten-fold higher exchangeable cation concentrations, and slower rates of microbial activity than older, more weathered landscapes. To tease apart the effects o......
Enhanced greenhouse gas emissions and changes in plankton communities following an experimental increase in organic carbon loading to a humic lake
Springer Science and Business Media LLC - Tập 118 - Trang 177-194 - 2013
Organic carbon concentrations in the surface waters of the boreal region have increased during the past two decades. We investigated the impact of elevated dissolved organic carbon (DOC) loading to a humic lake by a whole-lake experiment in which DOC in the form of cane sugar was added monthly during the ice-free period over two consecutive years. The sugar addition represented an increased concen......
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