Search Results - "Midwood, A.J"

Variability in oxidative degradation of charcoal: Influence of production conditions and environmental exposure by Ascough, P.L., Bird, M.I., Francis, S.M., Thornton, B., Midwood, A.J., Scott, A.C., Apperley, D.

“…Charcoal is a key component of the Black Carbon (BC) continuum, where BC is characterized as a recalcitrant, fire-derived, polyaromatic material. Charcoal is…”
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Bicarbonates dissolved in irrigation water contribute to soil CO2 efflux by Hannam, K.D., Midwood, A.J., Neilsen, D., Forge, T.A., Jones, M.D.

“…Understanding the processes that drive the release of carbon dioxide (CO2) from soil is essential to combat rising atmospheric greenhouse gases. Whilst…”
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Soil carbonate decomposition by acid has little effect on δ13C of organic matter by Midwood, A.J., Boutton, T.W.

“…The δ 13C of soil organic C is often utilized to document vegetation changes and to estimate rates of soil organic C turnover. Soil carbonate C is isotopically…”
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Atmospheric CO2 enrichment and nutrient additions to planted soil increase mineralisation of soil organic matter, but do not alter microbial utilisation of plant- and soil C-sources by Paterson, E, Thornton, B, Midwood, A.J, Osborne, S.M, Sim, A, Millard, P

“…Plants link atmospheric and soil carbon pools through CO2 fixation, carbon translocation, respiration and rhizodeposition. Within soil, microbial communities…”
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Utilisation of different carbon sources in a shallow estuary identified through stable isotope techniques by Zetsche, E., Thornton, B., Midwood, A.J., Witte, U.

“…Organic carbon in estuarine sediments can have many different sources. Terrestrial, riverine, estuarine and marine C pools may all contribute to and influence…”
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Defoliation alters the relative contributions of recent and non-recent assimilate to root exudation from Festuca rubra by Paterson, E, Thornton, B, Midwood, A.J, Sim, A

“…The deposition of organic compounds from plant roots is a key determinant of rhizosphere microbial activity and community structure. Consequently, C-flow from…”
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Loss of labile carbon following soil disturbance determined by measurement of respired ∂13CO2 by Zakharova, A., Midwood, A.J., Hunt, J.E., Graham, S.L., Artz, R.R.E., Turnbull, M.H., Whitehead, D., Millard, P.

“…Soils are the largest pool of carbon (C) in terrestrial ecosystems with labile C being particularly vulnerable to loss. In this study we incubated a range of…”
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Internal cycling of nitrogen, potassium and magnesium in young Sitka spruce by Weatherall, A, Proe, M.F, Craig, J, Cameron, A.D, Midwood, A.J

“…Potassium (K) and magnesium (Mg) are essential macro-nutrients, but little is known about how they are cycled within plants. Stable isotope studies have shown…”
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Partitioning soil surface CO2 efflux into autotrophic and heterotrophic components, using natural gradients in soil δ13C in an undisturbed savannah soil by Millard, P, Midwood, A.J, Hunt, J.E, Whitehead, D, Boutton, T.W

“…We used natural gradients in soil and vegetation δ13C signatures in a savannah ecosystem in Texas to partition soil respiration into the autotrophic (Ra) and…”
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Tracing N, K, Mg and Ca released from decomposing biomass to new tree growth. Part II: A model system simulating root decomposition on clearfell sites by Weatherall, A., Proe, M.F., Craig, J., Cameron, A.D., McKay, H.M., Midwood, A.J.

“…The decomposing roots of harvested trees are a potential source of nutrients for new trees on both conventional and whole-tree harvested clearfell sites. Roots…”
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Tracing N, K, Mg and Ca released from decomposing biomass to new tree growth. Part I: A model system simulating harvest residue decomposition on conventionally harvested clearfell sites by Weatherall, A., Proe, M.F., Craig, J., Cameron, A.D., McKay, H.M., Midwood, A.J.

“…It is necessary to assess the effects of removing nutrient-rich harvest residues (brash) from clearfell sites because there is a growing market for this brash…”
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Water use by woody plants on contrasting soils in a savanna parkland: assessment with delta(2)H and delta(18)O by Midwood, A.J. (Texas A and M Univ., College Station, TX (USA). Dept. of Rangeland Ecology and Management), Boutton, T.W, Archer, S.R, Watts, S.E

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Stable carbon isotope analysis of soil organic matter illustrates vegetation change at the grassland/woodland boundary in southeastern Arizona, USA by McPherson, G.R. (Arizona Univ., Tucson (USA). School of Renewable Natural Resources. Forest-Watershed Sciences Program), Boutton, T.W, Midwood, A.J

“…In southeastern Arizona, Prosopis juliflora (Swartz) DC. and Quercus emoryi Torr. are the dominant woody species at grassland/woodland boundaries. The…”
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Water use by woody plants on contrasting soils in a savanna parkland: assessment with δ²H and δ¹⁸O by Midwood, A.J., Boutton, T.W., Archer, S.R., Watts, S.E.

“…In savanna parklands of southern Texas, patches of grassland and 'discrete clusters' of small trees and shrubs occur on sandy loam surface soils underlain by…”
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Strontium isotope ratios in streams and the effect of flow rate in relation to weathering in catchments by Bain, D.C, Midwood, A.J, Miller, J.D

“…In calculating catchment weathering rates using strontium isotope ratios, one of the parameters required is the 87Sr/ 86Sr ratio of the streamwater. The effect…”
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The doubly labeled water method: errors due to deuterium exchange and sequestration in ruminants by Midwood, A.J. (The Rowett Research Institute, Aberdeen, UK), Haggarty, P, McGaw, B.A

“…The doubly labeled water (DLW) technique allows the CO2 production (rCO2) of free living animals to be estimated from the difference between the turnover of…”
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Methane production in ruminants: its effect on the doubly labeled water method by Midwood, A J, Haggarty, P, McGaw, B A, Robinson, J J

“…The doubly labeled water (DLW) technique for measuring CO2 production (rCO2) in free-living animals requires an assessment of the elimination of both 2H and…”
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