Now showing items 1-5 of 20

  • Can oxygen stable isotopes be used to track precipitation moisture

    Amesbury, Matthew J.; Charman, Dan J.; Newnham, Rewi M.; Loader, Nwil J.; Goodrich, Jordan Paul; Royles, Jessica; Campbell, David I.; Keller, Elizabeth D.; Baisden, W. Troy; Roland, Thomas P.; Gallego-Sala, Angela V. (Elsevier, 2015-08-14)
    Variations in the isotopic composition of precipitation are determined by fractionation processes which occur during temperature- and humidity-dependent phase changes associated with evaporation and condensation. Oxygen ...
  • Carbon balance of an intensively grazed temperate pasture in two climatically contrasting years

    Mudge, Paul Lawrence; Wallace, Dirk Fraser; Rutledge, Susanna; Campbell, David I.; Schipper, Louis A.; Hosking, C.L. (Elsevier, 2011)
    Grazed grasslands occupy 26% of the earth's ice free land surface and are therefore an important component of the global C balance. In New Zealand, pastoral agriculture is the dominant land use and recent research has shown ...
  • Carbon stable isotopes as a palaeoclimate proxy in vascular plant dominated peatlands

    Amesbury, M.J.; Charman, D.J.; Newnham, Rewi M.; Loader, N.J.; Goodrich, Jordan Paul; Royles, Jessica; Campbell, David I.; Roland, Thomas P.; Gallego-Sala, Angela (PERGAMON-ELSEVIER SCIENCE LTD, 2015-09)
    Carbon stable isotope (δ¹³C) records from vascular plant dominated peatlands have been used as a palaeoclimate proxy, but a better empirical understanding of fractionation processes in these ecosystems is required. Here, ...
  • Changes in soil carbon stocks of New Zealand’s grazed pasture in response to variations in management and environmental factors.

    Kirschbaum, Miko U.F.; Rutledge, Susanna; Mudge, Paul Lawrence; Puche, Nicholas; Schipper, Louis A.; Campbell, David I. (Fertilizer and Lime Research Centre, Massey University, Palmerston North, New Zealand., 2015)
    Dairy farming is New Zealand‟s pre-eminent primary industry. It achieves large export earnings but is also responsible for a large proportion of the country‟s greenhouse gas emissions. One of those greenhouse gases is CO₂, ...
  • Contemporary carbon fluxes do not reflect the long-term carbon balance for an Atlantic blanket bog

    Ratcliffe, Joshua; Andersen, Roxane; Anderson, Russell; Newton, Anthony; Campbell, David I.; Mauquoy, Dmitri; Payne, Richard (Sage, 2017)
    Peatlands are one of the largest terrestrial stores of carbon. Carbon exchange in peatlands is often assessed solely by measurement of contemporary fluxes; however, these fluxes frequently indicate a much stronger sink ...

Showing up to 5 theses - most recently added to Research Commons first.

  • Water use efficiency of grazed pastures under contrasting diversity

    Pronger, Jack (The University of Waikato, 2017)
    Agriculture must increase food production to support a growing global population; however, this required increase in production is potentially restricted by freshwater supply for irrigation. Consequently, relying on ...
  • Adaptation of New Zealand dairy farms to climate change: An integrated, farm-level analysis

    Kalaugher, Electra (University of Waikato, 2015)
    The dairy sector is a cornerstone of the New Zealand economy and as such, it is important to understand the ways in which it is likely to be affected by climate change, whether it will need to adapt, and if so, how this ...
  • Magnitude and controls on the net carbon balance of a New Zealand raised bog

    Goodrich, Jordan Paul (University of Waikato, 2015)
    Peatlands play an important role in the Earth system as both persistent carbon dioxide (CO₂) sinks and methane (CH₄) sources. However, large uncertainties remain in our understanding of peatland carbon cycle – climate ...
  • The role of Empodisma robustum litter in CO₂ exchange at Kopuatai bog

    Keyte Beattie, Alexandra Margaret (University of Waikato, 2014)
    Respiration from the decomposition of standing dead litter in peatlands influences the ecosystem carbon balance through its contribution to total ecosystem respiration (ER). This research determined the proportion of ER ...
  • The microclimatology of Antarctic soils

    MacCulloch, Roger James Lee (University of Waikato, 1996)
    An understanding of the microclimatology of the ice free areas in Antarctica is needed to better quantify the impacts of human activities on this fragile environment and to help monitor global climate change processes. ...

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