Search Results - "Walcroft, A. S."

Varying atmospheric methane concentrations affect soil methane oxidation rates and methanotroph populations in pasture, an adjacent pine forest, and a landfill by Tate, K.R., Walcroft, A.S., Pratt, C.

“…We describe experiments to better understand how CH4 oxidation rates by different methanotroph communities respond to changing CH4 concentrations. We used a…”
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Components of ecosystem evaporation in a temperate coniferous rainforest, with canopy transpiration scaled using sapwood density by Barbour, M. M., Hunt, J. E., Walcroft, A. S., Rogers, G. N. D., McSeveny, T. M., Whitehead, D.

“…• Here we develop and test a method to scale sap velocity measurements from individual trees to canopy transpiration (E c) in a low-productivity, old-growth…”
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The response of photosynthetic model parameters to temperature and nitrogen concentration in Pinus radiata D. Don by WALCROFT, A. S., WHITEHEAD, D., SILVESTER, W. B., KELLIHER, F. M.

“…ABSTRACT Responses of photosynthesis (A) to intercellular CO2 concentration (ci) in 2‐year‐old Pinus radiata D. Don seedlings were measured at a range of…”
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Radiative transfer and carbon assimilation in relation to canopy architecture, foliage area distribution and clumping in a mature temperate rainforest canopy in New Zealand by Walcroft, A.S., Brown, K.J., Schuster, W.S.F., Tissue, D.T., Turnbull, M.H., Griffin, K.L., Whitehead, D.

“…The objective of this study was to characterize the forest canopy in terms of species composition, tree size classes and spatial distribution of leaf area of a…”
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Photosynthetic light acclimation in peach leaves: importance of changes in mass:area ratio, nitrogen concentration, and leaf nitrogen partitioning by Le Roux, X, Walcroft, A S, Sinoquet, H, Chaves, M M, Rodrigues, A, Osorio, L

“…Photosynthetic light acclimation of leaves can result from (i) changes in mass-based leaf nitrogen concentration, Nm, (ii) changes in leaf mass:area ratio, Ma,…”
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Interactions between widely spaced young poplars (Populus spp.) and introduced pasture mixtures by DOUGLAS, G. B, WALCROFT, A. S, HURST, S. E, POTTER, J. F, FOOTE, A. G, FUNG, L. E, EDWARDS, W. R. N, VAN DEN DIJSSEL, C

“…Silvopastoral systems involving poplars are widespread in rural landscapes in a number of regions of New Zealand. The effect of widely spaced trees of Populus…”
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Interactions between widely spaced young poplars (Populus spp.) and the understorey environment by DOUGLAS, G. B, WALCROFT, A. S, HURST, S. E, POTTER, J. F, FOOTE, A. G, FUNG, L. E, EDWARDS, W. R. N, VAN DEN DIJSSEL, C

“…Silvopastoral systems involving poplars are common to rural landscapes in many parts of New Zealand. The effect of widely spaced trees of Populus nigra × P…”
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Nitrogen allocation and carbon isotope fractionation in relation to intercepted radiation and position in a young Pinus radiata D. Don tree by Livingston, N. J., Whitehead, D., Kelliher, F. M., Wang, Y.‐P., Grace, J. C., Walcroft, A. S., Byers, J. N., Mcseveny, T. M., Millard, P.

“…The three dimensional distribution of intercepted radiation, intercellular CO2 concentration (Ci) and late summer needle nitrogen (N) concentration were…”
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The effects of long-term, partial shading on growth and photosynthesis in Pinus radiata D. Don trees by Walcroft, A.S., Whitehead, D., Kelliher, F.M., Arneth, A., Silvester, W.B.

“…Two 8-year-old Pinus radiata trees growing in a dry-land plantation forest were subjected to a partial shading treatment for 2 years in order to investigate…”
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Does variability in shoot carbon assimilation within the tree crown explain variability in peach fruit growth? by Walcroft, A S, Lescourret, F, Génard, M, Sinoquet, H, Le Roux, X, Donès, N

“…A three-dimensional model of radiative transfer and leaf gas exchange was used to quantify daily carbon (C) assimilation of all fruit-bearing shoots (FBS) in…”
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Modeling photosynthesis in olive leaves under drought conditions by Diaz-Espejo, A, Walcroft, A.S, Fernández, J.E, Hafridi, B, Palomo, M.J, Giron, I.F

“…We quantified parameters for a model of leaf-level photosynthesis for olive, and tested the model against an independent dataset. Specific…”
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Seasonal variation in δ13C and δ18O of cellulose from growth rings of Pinus radiata by Barbour, M. M., Walcroft, A. S., Farquhar, G. D.

“…Seasonal variation in δ13C and δ18O of cellulose (δ13Cc and δ18Oc) was measured within two annual rings of Pinus radiata growing at three sites in New Zealand…”
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Effects of branch length on carbon isotope discrimination in Pinus radiata by Walcroft, A.S, Silvester, W.B, Grace, J.C, Carson, S.D, Waring, R.H

“…Gas exchange was measured on a pruned Pinus radiata D. Don hedge and on a long-branch P. radiata tree near Hamilton, New Zealand, in spring 1993 when soil…”
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The contribution of bryophytes to the carbon exchange for a temperate rainforest by DeLucia, Evan H., Turnbull, Matthew H., Walcroft, Adrian S., Griffin, Kevin L., Tissue, David T., Glenny, David, McSeveny, Tony M., Whitehead, David

“…Bryophytes blanket the floor of temperate rainforests in New Zealand and may influence a number of important ecosystem processes, including carbon cycling…”
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Leaf Gas Exchange Characteristics and Water- and Nitrogen-Use Efficiencies of Dominant Grass and Tree Species in a West African Savanna by Simioni, Guillaume, Le Roux, Xavier, Gignoux, Jacques, Walcroft, Adrian S.

“…Whereas leaf gas exchange properties are important to assess carbon and water fluxes in ecosystems worldwide, information of this type is scarce for savanna…”
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Characteristics of photosynthesis and stomatal conductance in the shrubland species manuka (Leptospermum scoparium) and kanuka (Kunzea ericoides) for the estimation of annual canopy carbon uptake by Whitehead, D, Walcroft, A.S, Scott, N.A, Townsend, J.A, Trotter, C.M, Rogers, G.N.D

“…Responses of photosynthesis to carbon dioxide (CO2) partial pressure and irradiance were measured on leaves of 39-year-old trees of manuka (Leptospermum…”
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Analysis of the growth of rimu (Dacrydium cupressinum) in South Westland, New Zealand, using process-based simulation models by Whitehead, David, Hall, Graeme M, Walcroft, Adrian S, Brown, Kim J, Landsberg, Joe J, Tissue, David T, Turnbull, Matthew H, Griffin, Kevin L, Schuster, William S, Carswell, Fiona E, Trotter, Craig M, James, Ian L, Norton, David A

“…Two process-based models were used to identify the environmental variables limiting productivity in a pristine, mature forest dominated by rimu (Dacrydium…”
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Modeling Annual Carbon Uptake for the Indigenous Forests of New Zealand by Whitehead, David, Leathwick, John R., Walcroft, Adrian S.

“…Abstract A regional estimate of annual gross carbon uptake for the indigenous forests of New Zealand is presented. Carbon uptake for forest canopies occupying…”
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Seasonal variation in (delta(13)C) and (delta(18)0) of cellulose from growth ring so Pinus radiata by Barbour, M M, Walcroft, A S, Farquhar, G D

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Seasonal variation in δ 13 C and δ 18 O of cellulose from growth rings of Pinus radiata by Barbour, M. M., Walcroft, A. S., Farquhar, G. D.

“…Abstract Seasonal variation in δ 13 C and δ 18 O of cellulose ( δ 13 C c and δ 18 O c ) was measured within two annual rings of Pinus radiata growing at three…”
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