Search Results - "Schipper, LA"

Estimates of annual leaching losses of dissolved organic carbon from pastures on Allophanic Soils grazed by dairy cattle, Waikato, New Zealand by Sparling, GP, Chibnall, EJ, Pronger, J, Rutledge, S, Wall, AM, Campbell, DI, Schipper, LA

“…Dissolved organic carbon (DOC) flux on a conventional New Zealand dairy farm was measured for 1 year to assess the contribution from DOC to the total farm C…”
Get full text

Nitrate removal from three different effluents using large-scale denitrification beds by Schipper, L.A., Cameron, S.C., Warneke, S.

“…Simple technologies that remove nitrate from effluents and other point discharges need to be developed to reduce pollution of receiving waters. Denitrification…”
Get full text

Carbon balance of an intensively grazed temperate dairy pasture over four years by Rutledge, S., Mudge, P.L., Campbell, D.I., Woodward, S.L., Goodrich, J.P., Wall, A.M., Kirschbaum, M.U.F., Schipper, L.A.

“…•We measured the CO2 and C balances of an intensively managed pasture in New Zealand.•Averaged over 4 years, the site was a sink for both CO2 (165gCm−2y−1),…”
Get full text

Rapid laboratory measurement of the temperature dependence of soil respiration and application to changes in three diverse soils through the year by Robinson, J. M., O’Neill, T. A., Ryburn, J., Liang, L. L., Arcus, V. L., Schipper, L. A.

“…Determining the temperature dependence of soil respiration is needed to test predictive models such as Arrhenius-like functions and macro-molecular rate theory…”
Get full text

The carbon balance of temperate grasslands part I: The impact of increased species diversity by Rutledge, S., Wall, A.M., Mudge, P.L., Troughton, B., Campbell, D.I., Pronger, J., Joshi, C., Schipper, L.A.

“…•Annual C balances were measured for four years over three pastoral blocks on a New Zealand dairy farm.•Two blocks were renewed to low and high diversity…”
Get full text

The carbon balance of temperate grasslands part II: The impact of pasture renewal via direct drilling by Rutledge, S., Wall, A.M., Mudge, P.L., Troughton, B., Campbell, D.I., Pronger, J., Joshi, C., Schipper, L.A.

“…•Two blocks had pastures renewed (PR) by direct drill. A third block was a control.•The PR blocks had smaller positive NEPs than the control block during the…”
Get full text

High vapor pressure deficit constrains GPP and the light response of NEE at a Southern Hemisphere bog by Goodrich, J.P., Campbell, D.I., Clearwater, M.J., Rutledge, S., Schipper, L.A.

“…•We analyzed eddy covariance measurements of NEE from a Southern Hemisphere bog.•Light response models of daytime NEE were improved by accounting for VPD.•GPP…”
Get full text

Soil order and grazing management effects on changes in soil C and N in New Zealand pastures by Schipper, L.A., Parfitt, R.L., Fraser, S., Littler, R.A., Baisden, W.T., Ross, C.

“…•We present soil C and N data from 148 soil profiles under pasture sampled twice decades apart.•On flat land, soil C losses occurred on Allophanic…”
Get full text

Large losses of soil C and N from soil profiles under pasture in New Zealand during the past 20 years by SCHIPPER, L. A., BAISDEN, W. T., PARFITT, R. L., ROSS, C., CLAYDON, J. J., ARNOLD, G.

“…The conversion of two‐thirds of New Zealand's native forests and grasslands to agriculture has followed trends in other developed nations, except that pastoral…”
Get full text

Low spatial and inter-annual variability of evaporation from a year-round intensively grazed temperate pasture system by Pronger, J., Campbell, D.I., Clearwater, M.J., Rutledge, S., Wall, A.M., Schipper, L.A.

“…⿢Low spatial and temporal variation in evaporation (E) from intensively grazed pasture.⿢Low variation occurred because E strongly controlled by…”
Get full text

Rates of accumulation of cadmium and uranium in a New Zealand hill farm soil as a result of long-term use of phosphate fertilizer by Schipper, L.A., Sparling, G.P., Fisk, L.M., Dodd, M.B., Power, I.L., Littler, R.A.

“…► Phosphate fertilizers are a source of the potentially toxic elements – cadmium and uranium. ► We analysed hill pasture soils from a 23 yr P fertiliser trial…”
Get full text

Carbon and nitrogen leaching under high and low phosphate fertility pasture with increasing nitrogen inputs by Scott, J.T., Lambie, S.M., Stevenson, B.A., Schipper, L.A., Parfitt, R.L., McGill, A.C.

“…•Soil with high phosphorus inputs had greater leaching of dissolved organic carbon.•Dissolved organic carbon leaching also increased with increasing nitrogen…”
Get full text

Carbon balance of an intensively grazed temperate pasture in two climatically contrasting years by Mudge, P.L., Wallace, D.F., Rutledge, S., Campbell, D.I., Schipper, L.A., Hosking, C.L.

“…► The carbon balance of an intensively grazed pasture was measured for 2 years. ► There was a severe drought during the 1st year, and the 2nd year was very…”
Get full text

Gains and losses in C and N stocks of New Zealand pasture soils depend on land use by Schipper, L.A., Parfitt, R.L., Ross, C., Baisden, W.T., Claydon, J.J., Fraser, S.

“…▶ We resampled 83 soil profiles under pasture about 20 years apart. ▶ Dairy pasture on flat land lost 0.73MgCha−1y−1 in top 30cm. ▶ In contrast, soil C did not…”
Get full text

Evaluation of passive solar heating and alternative flow regimes on nitrate removal in denitrification beds by Cameron, Stewart G., Schipper, Louis A.

“…Denitrification beds are a simple and relatively inexpensive technology for removing nitrate from point source discharges. To date, operational beds have used…”
Get full text

CO2 emissions following cultivation of a temperate permanent pasture by Rutledge, S., Mudge, P.L., Wallace, D.F., Campbell, D.I., Woodward, S.L., Wall, A.M., Schipper, L.A.

“…•We measured CO2 losses following cultivation of pasture for 3 cultivation events.•Short-term CO2 losses (<43 days) ranged between 3.9 and 7.8gCm−2d−1.•Rates…”
Get full text

Effect of amending cattle urine with dicyandiamide on soil nitrogen dynamics and leaching of urinarynitrogen by Welten, B G, Ledgard, S F, Schipper, LA, Judge, A A

“…Oral administration of dicyandiamide (DCD) to grazing ruminants for excretion in urine represents an alternative delivery technique to conventional broadcast…”
Get full text

Effects of prolonged oral administration of dicyandiamide to dairy heifers on excretion in urine and efficacy in soil by Welten, B.G., Ledgard, S.F., Schipper, L.A., Waller, J.E., Kear, M.J., Dexter, M.M.

“…•Dairy heifers were orally administered with dicyandiamide (DCD) at 3 rates over a 90-day continuous dosing period.•DCD did not affect heifer growth or…”
Get full text

Five years of nitrate removal, denitrification and carbon dynamics in a denitrification wall by Schipper, Louis A, Vojvodić-Vuković, Maja

“…Denitrification walls are a useful approach for removing nitrate from shallow groundwater, but little is known about the sustainability of nitrate removal,…”
Get full text

Carbon exchange of grazed pasture on a drained peat soil by Nieveen, J.P, Campbell, D.I, Schipper, L.A, Blair, I.J

“…Land‐use changes have contributed to increased atmospheric CO2 concentrations. Conversion from natural peatlands to agricultural land has led to widespread…”
Get full text