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You searched for: Journal name Biogeochemistry Remove constraint Journal name: Biogeochemistry Publication year rev 7992-2008 Remove constraint Publication year rev: 7992-2008 Source 2008 v.91 no.1 Remove constraint Source: 2008 v.91 no.1
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1. Abiotic immobilization of nitrate in two soils of relic Abies pinsapo-fir forests under Mediterranean climate

Author:
Torres-Cañabate, Patricia; Davidson, Eric A.; Bulygina, Ekaterina; García-Ruiz, Roberto; Carreira, Jose A.
Source:
Biogeochemistry 2008 v.91 no.1 pp. 1-11
ISSN:
0168-2563
Subject:
Abies pinsapo; Mediterranean climate; atmospheric deposition; carbon; flow injection analysis; forest ecosystems; ion exchange chromatography; iron; mineral soils; minerals; nitrates; nitrogen; saline water; soil sterilization; temperate forests; Spain
Abstract:
... Evidence for abiotic immobilization of nitrogen (N) in soil is accumulating, but remains controversial. Identifying the fate of N from atmospheric deposition is important for understanding the N cycle of forest ecosystems. We studied soils of two Abies pinsapo fir forests under Mediterranean climate seasonality in southern Spain--one with low N availability and the other with symptoms of N saturat ...
DOI:
10.1007/s10533-008-9255-y

2. Does elevated nitrogen deposition or ecosystem recovery from acidification drive increased dissolved organic carbon loss from upland soil? A review of evidence from field nitrogen addition experiments

Author:
Evans, Chris D.; Goodale, Christine L.; Caporn, Simon J. M.; Dise, Nancy B.; Emmett, Bridget A.; Fernandez, Ivan J.; Field, Chris D.; Findlay, Stuart E. G.; Lovett, Gary M.; Meesenburg, Henning; Moldan, Filip; Sheppard, Lucy J.
Source:
Biogeochemistry 2008 v.91 no.1 pp. 13-35
ISSN:
0168-2563
Subject:
atmospheric deposition; ammonium salts; acidity; acidification; sodium nitrate; sulfur; upland soils; nitrogen; dissolved organic carbon; ecosystems; soil pH; biogeochemistry; acid-base balance; tree mortality; adsorption; Europe; North America
Abstract:
... Dissolved organic carbon (DOC) concentrations have risen in upland waters across large areas of Europe and North America. Two proposed drivers of these increases are (1) deposition of atmospheric pollutant nitrogen (N) with consequent effects on plant and decomposer carbon dynamics, and (2) soil recovery from acidification associated with decreasing sulphur deposition. Examination of 12 European a ...
DOI:
10.1007/s10533-008-9256-x

3. Methane in the Changjiang (Yangtze River) Estuary and its adjacent marine area: riverine input, sediment release and atmospheric fluxes

Author:
Zhang, Guiling; Zhang, Jing; Liu, Sumei; Ren, Jingling; Xu, Jie; Zhang, Feng
Source:
Biogeochemistry 2008 v.91 no.1 pp. 71-84
ISSN:
0168-2563
Subject:
autumn; estuaries; freshwater; gas exchange; hypoxia; methane; models; seasonal variation; sediments; spring; summer; surface water; surveys; temperature; Yangtze River
Abstract:
... Dissolved methane (CH₄) was measured in the waters of the Changjiang (Yangtze River) Estuary and its adjacent marine area during five surveys from 2002 to 2006. Dissolved CH₄ concentrations ranged from 2.71 to 89.2 nM and had seasonal variation with the highest values occurring in summer and lowest in autumn. The horizontal distribution of dissolved CH₄ decreased along the freshwater plume from th ...
DOI:
10.1007/s10533-008-9259-7

4. Nitrogen deposition effects on soil organic matter chemistry are linked to variation in enzymes, ecosystems and size fractions

Author:
Grandy, A. Stuart; Sinsabaugh, Robert L.; Neff, Jason C.; Stursova, Martina; Zak, Donald R.
Source:
Biogeochemistry 2008 v.91 no.1 pp. 37-49
ISSN:
0168-2563
Subject:
enzyme substrates; polysaccharides; gas chromatography; pyrolysis; Tilia americana; enzymes; furfural; nitrogen; soil organic matter; sugars; soil; mass spectrometry; Quercus alba; Acer saccharum subsp. saccharum; enzyme kinetics; ecosystems; Quercus velutina; enzyme activity; lignin
Abstract:
... Recent research has dramatically advanced our understanding of soil organic matter chemistry and the role of N in some organic matter transformations, but the effects of N deposition on soil C dynamics remain difficult to anticipate. We examined soil organic matter chemistry and enzyme kinetics in three size fractions (>250 μm, 63-250 μm, and <63 μm) following 6 years of simulated atmospheric N de ...
DOI:
10.1007/s10533-008-9257-9

5. Seasonal biogeochemical hotspots in the streambed around restoration structures

Author:
Lautz, L. K.; Fanelli, R. M.
Source:
Biogeochemistry 2008 v.91 no.1 pp. 85-104
ISSN:
0168-2563
Subject:
biogeochemical cycles; data collection; ecosystems; groundwater; hydrochemistry; iron; manganese; nitrates; principal component analysis; seasonal variation; solutes; stream channels; variance
Abstract:
... Rapid exchange of stream water and groundwater in streambeds creates hotspots of biogeochemical cycling of redox-sensitive solutes. Although stream-groundwater interaction can be increased through stream restoration, there are few detailed studies of the increased heterogeneity of water and solute fluxes through the streambed and associated patterns of biogeochemical processes around stream restor ...
DOI:
10.1007/s10533-008-9235-2

6. Variability in soil respiration across riparian-hillslope transitions

Author:
Pacific, Vincent J.; McGlynn, Brian L.; Riveros-Iregui, Diego A.; Welsch, Daniel L.; Epstein, Howard E.
Source:
Biogeochemistry 2008 v.91 no.1 pp. 51-70
ISSN:
0168-2563
Subject:
carbon; carbon dioxide; growing season; landscapes; riparian areas; riparian soils; snowmelt; soil air; soil heterogeneity; soil respiration; soil temperature; soil water content; summer; watersheds; Montana; Rocky Mountain region
Abstract:
... The spatial and temporal controls on soil CO₂ production and surface CO₂ efflux have been identified as outstanding gaps in our understanding of carbon cycling. We investigated both across two riparian-hillslope transitions in a subalpine catchment, northern Rocky Mountains, Montana. Riparian-hillslope transitions provide ideal locations for investigating the controls on soil CO₂ dynamics due to s ...
DOI:
10.1007/s10533-008-9258-8