A5091666224- Soil Carbon and Nitrogen Dynamics
- Soil and Unsaturated Flow
- Geology and Paleoclimatology Research
- Soil erosion and sediment transport
- Soil and Water Nutrient Dynamics
- Aeolian processes and effects
- Landslides and related hazards
- Microbial Community Ecology and Physiology
- Soil Geostatistics and Mapping
- Environmental DNA in Biodiversity Studies
- Geological formations and processes
- Mycorrhizal Fungi and Plant Interactions
- Geochemistry and Geologic Mapping
- Land Use and Ecosystem Services
- Iron oxide chemistry and applications
- Invertebrate Taxonomy and Ecology
- Lichen and fungal ecology
- Mine drainage and remediation techniques
- Cryospheric studies and observations
- Species Distribution and Climate Change
- Phosphorus and nutrient management
- Clay minerals and soil interactions
- Soil and Land Suitability Analysis
- Soil Moisture and Remote Sensing
- Soil Management and Crop Yield
Manaaki Whenua – Landcare Research
2015-2024
GNS Science
2016
Lincoln University
2010-2014
Lincoln University - Pennsylvania
2013
Leipzig University
2008
Evaluating conflicting theories about the influence of mountains on carbon dioxide cycling and climate requires understanding weathering fluxes from tectonically uplifting landscapes. The lack soil production rate measurements in Earth's most rapidly has made it difficult to determine whether rates increase or decline response rapid erosion. Beryllium-10 concentrations soils western Southern Alps, New Zealand, demonstrate that is produced bedrock more than previously recognized, at up 2.5...
Abstract Formation of mineral-organic associations is a key process in the global carbon cycle. Recent concepts propose litter quality-controlled microbial assimilation and direct sorption processes as main factors transferring from plant into associations. We explored pathways formation mineral-associated organic matter (MOM) soil profiles along 120-ky ecosystem gradient that developed under humid climate retreating Franz Josef Glacier New Zealand. determined stocks particulate carbon,...
Soil structure affects a range of soil functions (e.g., water, air, heat, and nutrient transport) ecosystem services production, climate regulation). Agricultural intensification is dominant factor in global structural degradation. Understanding the vulnerability soils to degradation may be important land use planning identifying management practices that mitigate risk We review current methods for assessing influencing factors, focussing on compaction aggregate breakdown as two key measures...
Land information has in the past focused on key land and soil properties that physically or chemically support limit use of land. With increasing focus environmental, social, cultural impacts land-use decisions beyond boundaries individual parcels, there is a growing need for more extensive resource to assessments benefits, impacts, trade-offs decisions. We present new framework providing an ecosystem-service-based approach related policy development. The framework, called “the Resource...
Most of the world’s mountain glaciers have been retreating for more than a century in response to climate change. Glacier retreat is evident on all continents, and rate has accelerated during recent decades. Accurate, spatially explicit information position glacier margins over time useful analyzing patterns measuring reductions surface area. This also essential evaluating how ecosystems are evolving due warming attendant retreat. Here, we present non-comprehensive dataset showing multiple...
Liquefaction features and the geologic environment in which they formed were carefully studied at two sites near Lincoln southwest Christchurch.We undertook geomorphic mapping, excavated trenches, obtained hand cores areas with surficial evidence for liquefaction where no was present (Hardwick Marchand).The identified include (1) sand blows (singular aligned along linear fissures), (2) blisters or injections of subhorizontal dikes into topsoil, (3) related to blisters, (4) a collapse...
Summary The development of terrestrial ecosystems depends greatly on plant mutualists such as mycorrhizal fungi. global retreat glaciers exposes nutrient‐poor substrates in extreme environments and provides a unique opportunity to study early successions fungi by assessing their dynamics drivers. We combined environmental DNA metabarcoding measurements local conditions assess the succession communities during soil 46 glacier forelands around globe, testing whether drivers differ between...
The inventory of soil phosphorus (P) is subject to significant changes over time. main primary form, bedrock‐derived apatite P, becomes progressively lost through leaching, or transformed into more immobile and less plant‐accessible, secondary organic mineral forms. Here we studied the rejuvenating effect dust deposition on P along an active flux gradient downwind a braided river. Along gradient, measured fractions 50 cm depth six Spodosols one Inceptisol, supplemented by tree foliage...
Worldwide, rock fragments (RFs) are generally considered inert with respect to bulk soil hydraulic properties, such that all water retention properties predicted by national pedotransfer functions (such as S-map) based on the volumetric fraction of fine earth (<2 mm fraction) only. Research findings contradict those assumptions, but studies commonly focus porous RFs, and rely repacked cores lab studies, leaving uncertainty how low porosity RFs characteristic common strongly indurated...
Abstract The worldwide retreat of glaciers is causing a faster than ever increase in ice‐free areas that are leading to the emergence new ecosystems. Understanding dynamics these environments critical predicting consequences climate change on mountains and at high latitudes. Climatic differences between regions world could modulate biodiversity functionality after glacier retreat, yet global tests this hypothesis lacking. Nematodes most abundant soil animals, with keystone roles ecosystem...
Improved process understanding of temporal change in soil hydraulic, water retention, and physical properties is required to improve modelling soil-water dynamics. This study reports on trends for intensive till no irrigated wheat, from autumn sowing summer harvest. There were significant bulk density, readily available capacity, unsaturated hydraulic conductivity (at three matric potentials). Using a simple two-parameter exponential model conductivity, the coefficients appeared increase...