Full Name: Troy Baisden
Position: Leader: Terrestrial Isotope Biogeochemistry
1993: BA (High Honors), Earth Sciences; 2000: PhD (UC Berkeley), Soil Science
Areas of expertise
Geochemist: Sample processing
I lead work on the biogeochemistry of carbon (C), nitrogen (N), hydrogen (H) and oxygen (O) and global change issues, such as water quality, climate change, etc.
I am based at the National Isotope Centre. Much of my work involves the measurement and modelling of isotopes that are naturally present in the environment.
The majority of my work is within our Global Change Through Time Programme. I contribute to a number of projects on past and present environmental change, and lead work recently consolodated into a Land and Water project.
I have also recently led the following programmes:
1) "Was collapse inevitable on Easter Island (Rapa Nui)? Reconstructing a civilisation's failure" supported by the Marsden Fund. Listen to audio from Radio NZ or check out a blog.
2) The Isotopic Indicators of Land-to-Water Nitrogen Transfers (FRST Programme) focused on the development of indicators to define the contribution of pastoral agriculture to declining water quality, and involves Lincoln University, Waikato University, AgResearch, and Environment Canada. The programme was aligned to focus on the science of developing isotopic indicators, with long-term delivery occurring through large ongoing programmes focused on land use and water quality within AgResearch, Landcare Research and the Sustainable Land Use Research Initiative (SLURI). Our proposed indicators are intended to:
1) Classify the vulnerability of farm units to ongoing losses of NThese indicators recognise that multiple isotopes of N and oxygen (O) exist naturally, and the relative abundance of these isotopes records the sources of N and O, as well as the effects of biochemical processes occurring in soil and water. Based on a decade of accumulated knowledge from the use of these isotopes overseas, we designed a distinctive and globally significant project that defined N and O isotope systematics for pasture systems in the absence of the pollution that obscures relationships in the Northern Hemisphere. Work continues within the Land and Water project in Global Change Through Time.
2) Identify the proportion of river nitrate loads from differing farm types
3) Quantify the proportion of nitrate lost during transport
PublicationsView my Google Scholar Profile.
LinksAssociate Editor, Biogeochemistry.