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You searched for: Journal name Biogeochemistry Remove constraint Journal name: Biogeochemistry Publication year rev 7990-2010 Remove constraint Publication year rev: 7990-2010 Source 2010 v.101 no.1-3 Remove constraint Source: 2010 v.101 no.1-3
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1. Belowground heathland responses after 2 years of combined warming, elevated CO₂ and summer drought

Author:
Andresen, Louise C.; Michelsen, Anders; Ambus, Per; Beier, Claus
Source:
Biogeochemistry 2010 v.101 no.1-3 pp. 27-42
ISSN:
0168-2563
Subject:
dissolved organic nitrogen; drought; carbon; summer; nutrients; stable isotopes; carbon dioxide; terrestrial ecosystems; carbohydrates; ecosystem services; Calluna; soil; climate change; biogeochemistry; temperature; microbial activity; prediction; heathlands; microbial biomass; free air carbon dioxide enrichment
Abstract:
... Terrestrial ecosystems are exposed to atmospheric and climatic changes including increases in atmospheric CO₂ concentration, temperature and alterations of precipitation patterns, which are predicted to continue with consequences for ecosystem services and functioning in the future. In a field scale experiment on temperate heathland, manipulation of precipitation and temperature was performed with ...
DOI:
10.1007/s10533-010-9489-3

2. Changes in water colour between 1986 and 2006 in the headwaters of the River Nidd, Yorkshire, UK

Author:
Chapman, Pippa J.; McDonald, Adrian T.; Tyson, Rosa; Palmer, Sheila M.; Mitchell, Gordon; Irvine, Brian
Source:
Biogeochemistry 2010 v.101 no.1-3 pp. 281-294
ISSN:
0168-2563
Subject:
adsorption; biogeochemistry; color; dissolved organic carbon; hydrochemistry; mineral soils; pH; peat; rivers; runoff; silicon; soil horizons; statistical analysis; subwatersheds; sulfur; temporal variation; England
Abstract:
... This study compares the spatial and temporal variability of water colour for fifteen sub-catchments of the River Nidd, northeast England, in 1986 and 2006/2007. Between 1986 and 2006/2007, mean annual water colour increased in all the sub-catchments. However, there was considerable variation in the increase, which ranged from 22 to 155%. Statistical analysis revealed that the sub-catchments could ...
DOI:
10.1007/s10533-010-9474-x

3. Cosmogenic ¹⁰Be as a potential dating tool in peat

Author:
Wieder, R. Kelman; Vile, Melanie A.; Scott, Kimberli D.
Source:
Biogeochemistry 2010 v.101 no.1-3 pp. 177-182
ISSN:
0168-2563
Subject:
biogeochemistry; methodology; nutrients; organic matter; peat; peatlands; pollutants
Abstract:
... Because ombrotrophic peat bogs receive inputs of water, nutrients, pollutants, and xerobiotic materials solely from the atmosphere, and accumulate organic matter vertically, dated peat cores can provide a historical record of deposition. We propose a novel method for accurately determining dates of peat, based on cosmogenic ¹⁰Be. In a laboratory study, we document limited post-depositional mobilit ...
DOI:
10.1007/s10533-010-9468-8

4. Do changes in flood pulse duration disturb soil carbon dioxide emissions in semi-arid floodplains

Author:
Sánchez-Andrés, R.; Sánchez-Carrillo, S.; Ortiz-Llorente, M. J.; Álvarez-Cobelas, M.; Cirujano, S.
Source:
Biogeochemistry 2010 v.101 no.1-3 pp. 257-267
ISSN:
0168-2563
Subject:
alluvial soils; biogeochemistry; carbon; carbon dioxide; denitrification; drying; field experimentation; floodplains; floods; greenhouse gas emissions; long term effects; metabolism; microbial activity; nutrients; soil microorganisms; soil respiration; soil water; soil water content; Spain
Abstract:
... In semi-arid floodplains the average times between floods have been cited to drive metabolic and biogeochemical responses during the subsequent flooding pulse. However, the interaction effects of flood pulse duration and the length of time between floods on the carbon budget are not well understood. Using field experiments, flood pulses--dry cycles were simulated (SF plots--short flood/dry cycles: ...
DOI:
10.1007/s10533-010-9472-z

5. Does lake thermocline depth affect methyl mercury concentrations in fish

Author:
Rask, Martti; Verta, Matti; Korhonen, Markku; Salo, Simo; Forsius, Martin; Arvola, Lauri; Jones, Roger I.; Kiljunen, Mikko
Source:
Biogeochemistry 2010 v.101 no.1-3 pp. 311-322
ISSN:
0168-2563
Subject:
Perca fluviatilis; biodiversity; biogeochemical cycles; carbon; climate change; ecosystems; food webs; hypoxia; lakes; mercury; methylmercury compounds; mixing; muscle tissues; nitrogen; perch; stable isotopes; temperature; Finland
Abstract:
... Climate change is projected to increase mean temperature of northern lakes by the end of the twenty-first century. To simulate this scenario, during 2004-2007 we imposed artificial mixing in Halsjärvi, a small, polyhumic, boreal lake in southern Finland, to increase the depth of the thermocline by ~1.5 m. The aims of the experiment were to evaluate potential effects of climate change on biogeochem ...
DOI:
10.1007/s10533-010-9487-5

6. Effect of pH and dissolved organic matter on the abundance of nirK and nirS denitrifiers in spruce forest soil

Author:
Bárta, Jiří; Melichová, Tereza; Vaněk, Daniel; Picek, Tomáš; Šantrůčková, Hana
Source:
Biogeochemistry 2010 v.101 no.1-3 pp. 123-132
ISSN:
0168-2563
Subject:
biogeochemistry; denitrifying bacteria; dissolved organic carbon; forest soils; forests; genes; humus; leaching; nitrates; nitrogen; nutrients; pH; quantitative polymerase chain reaction; soil acidification; soil sampling
Abstract:
... Acid N depositions in the Bohemian Forest during the second half of the last century caused enormous soil acidification which led to the leaching of essential nutrients including nitrates. We investigated the effect of dissolved organic matter (DOM) and pH on the abundance of 16S RDNA, nirK and nirS gene copies in four spruce forest sites. Soil samples for molecular based quantification (qPCR) wer ...
DOI:
10.1007/s10533-010-9430-9

7. Estimating base cation weathering rates in Canadian forest soils using a simple texture-based model

Author:
Koseva, Ina S.; Watmough, Shaun A.; Aherne, Julian
Source:
Biogeochemistry 2010 v.101 no.1-3 pp. 183-196
ISSN:
0168-2563
Subject:
biogeochemistry; buffering capacity; forest soils; forests; mineralogy; model validation; models; silt; silt fraction; soil texture; soil weathering; watersheds; weathering; Ontario; United States
Abstract:
... Mineral weathering is the primary source of long-term buffering capacity in soils and is important for forest nutrient sustainability. Regional assessments of weathering rates in Canada and the U.S. have employed an empirical clay-based Soil Texture Approximation (STA) owing to limited data availability, although the STA is rarely calibrated before application to a study area. Soil weathering rate ...
DOI:
10.1007/s10533-010-9506-6

8. Identification of nitrogen sources to four small lakes in the agricultural region of Khorezm, Uzbekistan

Author:
Shanafield, Margaret; Rosen, Michael; Saito, Laurel; Chandra, Sudeep; Lamers, John; Nishonov, Bakhriddin
Source:
Biogeochemistry 2010 v.101 no.1-3 pp. 357-368
ISSN:
0168-2563
Subject:
arid zones; basins; biogeochemistry; cropland; fertilizers; irrigation water; lakes; land use; nitrates; nitrogen; pollution; rivers; stable isotopes; summer; water quality; zooplankton; Uzbekistan
Abstract:
... Pollution of inland waters by agricultural land use is a concern in many areas of the world, and especially in arid regions, where water resources are inherently scarce. This study used physical and chemical water quality and stable nitrogen isotope (δ¹⁵N) measurements from zooplankton to examine nitrogen (N) sources and concentrations in four small lakes of Khorezm, Uzbekistan, an arid, highly ag ...
DOI:
10.1007/s10533-010-9509-3

9. Influences of dissolved organic carbon on stream water chemistry in two forested catchments in central Sweden

Author:
Norström, Sara H.; Vestin, Jenny L. K.; Bylund, Dan; Lundström, Ulla S.
Source:
Biogeochemistry 2010 v.101 no.1-3 pp. 229-241
ISSN:
0168-2563
Subject:
aluminum; biogeochemistry; calcium; cations; dissolved organic carbon; drainage; forested watersheds; growing season; hydrochemistry; iron; lactic acid; magnesium; molecular weight; pH; stream channels; wetlands; Sweden
Abstract:
... Stream water chemistry in two headwater streams draining two small, adjacent catchments in Bispgården, central Sweden was studied during the 2003 and 2004 growing seasons. The two catchments closely resemble each other in regard to size, shape and drainage density, with the major difference found in the area of wetland lining the streambeds. The emphasis of the study was to investigate the stream ...
DOI:
10.1007/s10533-010-9469-7

10. Initial pedogenesis in a topsoil crust 3 years after construction of an artificial catchment in Brandenburg, NE Germany

Author:
Fischer, Thomas; Veste, Maik; Schaaf, Wolfgang; Dümig, Alexander; Kögel-Knabner, Ingrid; Wiehe, Wolfgang; Bens, Oliver; Hüttl, Reinhard F.
Source:
Biogeochemistry 2010 v.101 no.1-3 pp. 165-176
ISSN:
0168-2563
Subject:
manganese; organic matter; soil minerals; energy-dispersive X-ray analysis; watersheds; carbon; scanning electron microscopy; weathering; iron; Fourier transform infrared spectroscopy; ecosystems; soil crusts; Chlorophyta; biogeochemistry; temperature; silicates; soil formation; carbonates; chickens; X-ray diffraction; organic compounds; microorganisms; environmental factors; streams; rain; aluminum; pH; topsoil; minerals; Cyanobacteria; habitats; Germany
Abstract:
... Cyanobacteria and green algae present in biological soil crusts are able to colonize mineral substrates even under extreme environmental conditions. As pioneer organisms, they play a key role during the first phases of habitat colonization. A characteristic crust was sampled 3 years after installation of the artificial water catchment “Chicken creek”, thus representing an early successional stage ...
DOI:
10.1007/s10533-010-9464-z

11. Long-term patterns in pH and colour in small acidic boreal lakes of varying hydrological and landscape settings

Author:
Arvola, Lauri; Rask, Martti; Ruuhijärvi, Jukka; Tulonen, Tiina; Vuorenmaa, Jussi; Ruoho-Airola, Tuija; Tulonen, Jouni
Source:
Biogeochemistry 2010 v.101 no.1-3 pp. 269-279
ISSN:
0168-2563
Subject:
acid deposition; climate; color; drought; lakes; landscapes; leaching; organic matter; pH; runoff; soil types; summer; watersheds; Finland
Abstract:
... Changes in water pH and colour since the late 1980s were studied in 35 small boreal lakes of varying hydrological and landscape settings but similar climate and acid deposition. The data was collected during the autumnal overturn on the annual basis except in lake with weekly sampling during the ice-free period. In addition to the deposition data information about catchment soil types as well as l ...
DOI:
10.1007/s10533-010-9473-y

12. Microbial C, N and P in soils of Mediterranean oak forests: influence of season, canopy cover and soil depth

Author:
Aponte, Cristina; Marañón, Teodoro; García, Luis V.
Source:
Biogeochemistry 2010 v.101 no.1-3 pp. 77-92
ISSN:
0168-2563
Subject:
Mediterranean climate; biogeochemical cycles; canopy; correlation; edaphic factors; forest ecosystems; forests; microbial biomass; seasonal variation; soil depth; soil microorganisms; soil water; spring; summer
Abstract:
... In Mediterranean ecosystems the effect of aboveground and belowground environmental factors on soil microbial biomass and nutrient immobilization-release cycles may be conditioned by the distinctive seasonal pattern of the Mediterranean-type climates. We studied the effects of season, canopy cover and soil depth on microbial C, N and P in soils of two Mediterranean forests using the fumigation-ext ...
DOI:
10.1007/s10533-010-9418-5

13. Modeling the seasonality of belowground respiration along an elevation gradient in the western Chugach Mountains, Alaska

Author:
Sullivan, Patrick F.; Arens, Seth J. T.; Sveinbjörnsson, Bjartmar; Welker, Jeffrey M.
Source:
Biogeochemistry 2010 v.101 no.1-3 pp. 61-75
ISSN:
0168-2563
Subject:
biogeochemistry; boreal forests; carbon; environmental factors; logit analysis; models; mountains; seasonal variation; soil; summer; temperature; terrestrial ecosystems; winter; Alaska
Abstract:
... Belowground respiration is typically the largest flux of carbon from terrestrial ecosystems to the atmosphere, making up >70% of total respiration in boreal forests. Recent work has shown that belowground respiration continues during the snow-covered season in boreal ecosystems, but few studies have made complementary measurements during the snow-free season and it remains uncertain what proportio ...
DOI:
10.1007/s10533-010-9471-0

14. Nutrient hot spots in some sierra Nevada forest soils

Author:
Johnson, D. W.; Glass, D. W.; Murphy, J. D.; Stein, C. M.; Miller, W. W.
Source:
Biogeochemistry 2010 v.101 no.1-3 pp. 93-103
ISSN:
0168-2563
Subject:
ammonium compounds; biogeochemistry; calcium; ecological competition; forest soils; ions; lakes; lysimeters; magnesium; mountains; nitrates; nitrogen; nutrients; potassium; subsurface flow; sulfates
Abstract:
... Re-examination of data distributions from several forested sites in the eastern Sierra Nevada Mountains shows consistent, positive outliers and skew for NH₄ ⁺, NO₃ ⁻, and mineral N in resin lysimeters and resin capsules, indicating that most values were low but hotspots of high N flux were present in most cases. Exact causes of these N flux hotspots is not known, but could include water flux hotsp ...
DOI:
10.1007/s10533-010-9423-8

15. Seasonal variation of water extractable aluminium forms in acidified forest organic soils under different vegetation cover

Author:
Tejnecký, Václav; Drábek, Ondřej; Borůvka, Luboš; Nikodem, Antonín; Kopáč, Jan; Vokurková, Petra; Šebek, Ondřej
Source:
Biogeochemistry 2010 v.101 no.1-3 pp. 151-163
ISSN:
0168-2563
Subject:
Fagus; acidification; aluminum; biogeochemistry; dissolved organic carbon; forest soils; forests; mountains; organic soils; pH; seasonal variation; soil horizons; vegetation cover
Abstract:
... The Jizera Mountains area is affected by natural and anthropogenic acidification processes. The effect of acidification is reflected by presence of elevated amount of different Al forms in soil horizons. Changes of water extractable forms of Al (total [graphic removed] , species: Al(X)¹⁺, Al(Y)²⁺ and Al³⁺) and other soil characteristics (e.g. DOC, pH) were investigated in forest soils from April t ...
DOI:
10.1007/s10533-010-9450-5

16. Soil carbon and litter development along a reconstructed biodiverse forest chronosequence of South-Western Australia

Author:
George, S. J.; Kelly, R. N.; Greenwood, P. F.; Tibbett, M.
Source:
Biogeochemistry 2010 v.101 no.1-3 pp. 197-209
ISSN:
0168-2563
Subject:
Eucalyptus marginata; biogeochemistry; carbon; chronosequences; forests; fractionation; landscapes; mineral soils; soil depth; soil organic matter; uncertainty; Australia
Abstract:
... Soil organic matter (SOM) increases with time as landscape is restored. Studying SOM development along restored forest chronosequences would be useful in clarifying some of the uncertainties in quantifying C turnover rates with respect to forest clearance and ensuing restoration. The development of soil organic matter in the mineral soils was studied at four depths in a 16-year-old restored jarrah ...
DOI:
10.1007/s10533-010-9519-1

17. Spatial and temporal changes in phosphorus partitioning within a freshwater cyanobacterial mat community

Author:
Borovec, Jakub; Sirová, Dagmara; Mošnerová, Petra; Rejmánková, Eliška; Vrba, Jaroslav
Source:
Biogeochemistry 2010 v.101 no.1-3 pp. 323-333
ISSN:
0168-2563
Subject:
dissolved oxygen; fractionation; freshwater; microorganisms; nutritional status; pH; phosphorus; temporal variation
Abstract:
... Spatial and temporal changes in phosphorus (P) distribution, partitioning and mobility in the benthic cyanobacterial mat (CBM) were evaluated using sequential chemical fractionation. Total P (TP) content was extremely low, ranging from 0.025 to 0.1 mg g⁻¹ DW. Exchangeable and loosely bound P, which we consider to be mainly associated with extracellular polymeric substances (EPS), constituted the m ...
DOI:
10.1007/s10533-010-9488-4

18. Deepened snow increases late thaw biogeochemical pulses in mesic low arctic tundra

Author:
Buckeridge, Kate M.; Grogan, Paul
Source:
Biogeochemistry 2010 v.101 no.1-3 pp. 105-121
ISSN:
0168-2563
Subject:
carbon sinks; growing season; nutrient availability; nutrient content; snow; snowmelt; snowpack; soil nutrients; soil solution; soil temperature; soil water; spring; thawing; tundra; winter
Abstract:
... Pulses of plant-available nutrients to the soil solution are expected to occur during the dynamic winter-spring transition in arctic tundra. Our aims were to quantify the magnitude of these potential nutrient pulses, to understand the sensitivity of these pulses to winter conditions, and to characterize and integrate the environmental and biogeochemical dynamics of this period. To test the hypothe ...
DOI:
10.1007/s10533-010-9426-5

19. Heavy metals in sediments from constructed wetlands treating municipal wastewater

Author:
Vymazal, Jan; Švehla, Jaroslav; Kröpfelová, Lenka; Němcová, Jana; Suchý, Vladimír
Source:
Biogeochemistry 2010 v.101 no.1-3 pp. 335-356
ISSN:
0168-2563
Subject:
biogeochemistry; cadmium; chromium; constructed wetlands; copper; drainage water; filtration; heavy metals; laws and regulations; lead; municipal wastewater; nickel; nutrients; pollution; sediments; sewage; soil; subsurface flow; zinc; Czech Republic
Abstract:
... Constructed wetlands are commonly used for treatment of municipal sewage. The treatment is usually aimed at removal of organics, suspended solids, nutrients and microbial pollution. The information on removal and fate of heavy metals is very limited. The purpose of this study was to evaluate the amount of sediments and heavy metal concentration in the sediments in filtration beds of seven construc ...
DOI:
10.1007/s10533-010-9504-8

20. High precipitation causes large fluxes of dissolved organic carbon and nitrogen in a subtropical montane Chamaecyparis forest in Taiwan

Author:
Schmidt, Bettina H. M.; Wang, Chiao-Ping; Chang, Shih-Chieh; Matzner, Egbert
Source:
Biogeochemistry 2010 v.101 no.1-3 pp. 243-256
ISSN:
0168-2563
Subject:
Chamaecyparis obtusa var. formosana; biogeochemistry; dissolved organic carbon; forest ecosystems; forest litter; forest soils; forests; nitrogen; nitrogen content; seepage; throughfall; Taiwan
Abstract:
... Fluxes of dissolved organic carbon (DOC) and nitrogen (DON) may play an important role for losses of C and N from the soils of forest ecosystems, especially under conditions of high precipitation. We studied DOC and DON fluxes and concentrations in relation to precipitation intensity in a subtropical montane Chamaecyparis obtusa var. formosana forest in Taiwan. Our objective was, to quantify DOC a ...
DOI:
10.1007/s10533-010-9470-1