Browsing by Author "Campbell, David I."
Now showing items 1-5 of 24
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Assessment of the ecohydrological functioning of Otakairangi Wetland, Northland
(Environmental Research Institute, The University of Waikato, 2017)Otakairangi is the largest wetland remnant on the floodplain of Northland’s Wairua River near Hikurangi. Extensive peat deposits many metres deep accumulated over thousands of years on the valley floors of the Otakairangi ... -
Can oxygen stable isotopes be used to track precipitation moisture
(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
(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
(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.
(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, ...
Co-authors for David I. Campbell
Supervised by David I. Campbell
Showing up to 5 theses - most recently added to Research Commons first.
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Flows of water and nutrients to Lake Tarawera and connected lakes
(The University of Waikato, 2022)Lake Tarawera is a large, deep lake located within the Taupō Volcanic zone, 12 km south-east of Rotorua. Seven smaller lakes within the “Greater Lake Tarawera catchment” (Lakes Ōkareka, Ōkaro, Ōkataina, Rerewhakaaitu, ... -
Characterising the temperature dependence of anaerobic CH₄ and CO₂ production from intact and drained New Zealand peatlands
(The University of Waikato, 2021)Understanding the temperature response of anaerobic microbial processes in wetlands is important in determining consequences for carbon dynamics and the production of methane (CH₄) under climate warming scenarios. Natural ... -
'Hass' avocado tree water use and the effects of water stress on fruit development
(The University of Waikato, 2020)‘Hass’ avocado tree water use and the effects of water deficits on fruit development were assessed in New Zealand from 2017 to 2019. Avocado tree water use was quantified by sap flow measurement and the soil water balance ... -
The impact of maize silage production and supplementary feed use on the carbon balance of New Zealand dairy farms
(The University of Waikato, 2021)Globally, agriculture contributes 10-12% to anthropogenic greenhouse gas (GHG) emissions. Consequently, mitigation of agricultural GHGs has taken on increased importance, particularly in countries like New Zealand where ... -
Paddock scale nitrous oxide emissions from intensively grazed pasture: Quantification and mitigation
(The University of Waikato, 2021)Agricultural soils are the main contributor to global emissions of the potent greenhouse gas nitrous oxide (N₂O) to the atmosphere. Nitrous oxide can absorb and transform radiative energy emitted from the sun to earth into ...
