Search Results - "Midwood, Andrew J"

Through the eye of the needle: a review of isotope approaches to quantify microbial processes mediating soil carbon balance by Paterson, Eric, Midwood, Andrew J., Millard, Peter

“…For soils in carbon balance, losses of soil carbon from biological activity are balanced by organic inputs from vegetation. Perturbations, such as climate or…”
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Quantification of effects of season and nitrogen supply on tree below-ground carbon transfer to ectomycorrhizal fungi and other soil organisms in a boreal pine forest by Högberg, Mona N., Briones, Maria J. I., Keel, Sonja G., Metcalfe, Daniel, Campbell, Catherine, Midwood, Andrew J., Thornton, Barry, Hurry, Vaughan, Linder, Sune, Näsholm, Torgny, Högberg, Peter

“…The flux of carbon from tree photosynthesis through roots to ectomycorrhizal (ECM) fungi and other soil organisms is assumed to vary with season and with…”
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Metal-macrofauna interactions determine microbial community structure and function in copper contaminated sediments by Mayor, Daniel J, Gray, Nia B, Elver-Evans, Joanna, Midwood, Andrew J, Thornton, Barry

“…Copper is essential for healthy cellular functioning, but this heavy metal quickly becomes toxic when supply exceeds demand. Marine sediments receive…”
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Grassland Management Influences the Response of Soil Respiration to Drought by Moinet, Gabriel, Midwood, Andrew, Hunt, John, Rumpel, Cornelia, Millard, Peter, Chabbi, Abad

“…Increasing soil carbon stocks in agricultural grasslands has a strong potential to mitigate climate change. However, large uncertainties around the drivers of…”
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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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The temperature sensitivity of soil organic matter decomposition is constrained by microbial access to substrates by Moinet, Gabriel Y.K., Hunt, John E., Kirschbaum, Miko U.F., Morcom, Christopher P., Midwood, Andrew J., Millard, Peter

“…Soils can be sources or sinks of carbon depending on the balance between carbon inputs from plants and losses from the decomposition of soil organic matter…”
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Interrogating pollution sources in a mangrove food web using multiple stable isotopes by Souza, Iara da C., Arrivabene, Hiulana P., Craig, Carol-Ann, Midwood, Andrew J., Thornton, Barry, Matsumoto, Silvia T., Elliott, Michael, Wunderlin, Daniel A., Monferrán, Magdalena V., Fernandes, Marisa N.

“…Anthropogenic activities including metal contamination create well-known problems in coastal mangrove ecosystems but understanding and linking specific…”
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Quantifying the contribution of soil organic matter turnover to forest soil respiration, using natural abundance δ13C by Millard, Peter, Midwood, Andrew J, Hunt, John E, Barbour, Margaret M, Whitehead, David

“…Quantifying the loss of soil carbon through respiration has proved difficult, due to the challenge of measuring the losses associated with the turnover of soil…”
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Tree species’ influences on soil carbon dynamics revealed with natural abundance 13C techniques by Snell, Helen S. K, Robinson, David, Midwood, Andrew J

“…BACKGROUND AND AIMS: The carbon (C) sequestration potential of land-use practices is increasingly important. Trees sequester atmospheric C into biomass and…”
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Can gas chromatography combustion isotope ratio mass spectrometry be used to quantify organic compound abundance? by Thornton, Barry, Zhang, Zulin, Mayes, Robert W., Högberg, Mona N., Midwood, Andrew J.

“…ABSTRACT Quantifying the concentrations of organics such as phospholipid fatty acids (PLFAs) and n‐alkanes and measuring their corresponding 13 C/12 C isotope…”
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Sampling root-respired CO2 in-situ for 13C measurement by Snell, Helen S. K, Robinson, David, Midwood, Andrew J

“…BACKGROUND AND AIMS: Root-respired δ¹³CO₂ can be useful for exploring plant carbon allocation and root respiratory fractionation as well as for partitioning…”
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Estimating Mineral-Associated Organic Carbon Deficits in Soils of the Okanagan Valley: A Regional Study With Broader Implications by Emde, David, Hannam, Kirsten D., Midwood, Andrew J., Jones, Melanie D.

“…To successfully reduce atmospheric CO 2 by sequestering additional soil carbon, it is essential to understand the potential of a given soil to store carbon in…”
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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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Mg and Ca root uptake and vertical transfer in soils assessed by an in situ ecosystem-scale multi-isotopic (²⁶Mg & ⁴⁴Ca) tracing experiment in a beech stand (Breuil-Chenue, France) by van der Heijden, Gregory, Legout, Arnaud, Midwood, Andrew J., Craig, Carol-Ann, Pollier, Benoît, Ranger, Jacques, Dambrine, Etienne

“…Background and aims The sustainability of forest ecosystems may be at stake especially in forests on basepoor soils due to reduced nutrient deposition and…”
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Minimising methodological biases to improve the accuracy of partitioning soil respiration using natural abundance 13C by Snell, Helen S. K., Robinson, David, Midwood, Andrew J.

“…RATIONALE Microbial degradation of soil organic matter (heterotrophic respiration) is a key determinant of net ecosystem exchange of carbon, but it is…”
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Altered food web structure and C-flux pathways associated with mineralisation of organic amendments to agricultural soil by Paterson, Eric, Neilson, Roy, Midwood, Andrew J., Osborne, Shona M., Sim, Allan, Thornton, Barry, Millard, Pete

“…► Soil amendment with compost increased nematode and microbial abundance. ► Compost, but not slurry amendment, altered soil microbial community structure. ►…”
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Late-Season Foliar Urea Applications Can Increase Berry Yeast-Assimilable Nitrogen in Winegrapes (Vitis vinifera L.) by Hannam, Kirsten D., Neilsen, Gerald H., Neilsen, Denise, Rabie, William S., Midwood, Andrew J., Millard, Peter

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Challenges in measuring the δ13C of the soil surface CO2 efflux by Midwood, Andrew J., Millard, Peter

“…The δ13C of the soil surface efflux of carbon dioxide (δ13CRS) has emerged as a powerful tool enabling investigation of a wide range of soil processes from…”
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Measuring Plant-Available Mg, Ca, and K Pools in the SoilAn Isotopic Dilution Assay by van der Heijden, Gregory, Bel, Jérémie, Craig, Carol-Ann, Midwood, Andrew J, Mareschal, Louis, Ranger, Jacques, Dambrine, Etienne, Legout, Arnaud

“…In many forest ecosystems, plant-available pools of Mg, Ca, and K are assumed to be stored in the soil as exchangeable cations adsorbed on the cation exchange…”
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Measuring the 13C content of soil-respired CO2 using a novel open chamber system by Midwood, Andrew J., Thornton, Barry, Millard, Pete

“…Carbon dioxide respired by soils comes from both autotrophic and heterotrophic respiration. 13C has proved useful in differentiating between these two sources,…”
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