0000000000453995

AUTHOR

V.j. Ord

showing 2 related works from this author

Soil fungal community composition does not alter along a latitudinal gradient through the maritime and sub-Antarctic

2012

We investigated the relationships between fungal community composition, latitude and a range of physicochemical parameters in 58 soils sampled from a 2370 km latitudinal gradient between South Georgia (54 S, 38 W) in the sub-Antarctic and Mars Oasis (72 S, 68 W) on Alexander Island in the southern maritime Antarctic. Our study, which is based on approximately ten times the number of samples used in previous similar studies, indicates that latitude and its associated environmental parameters are not related to fungal community composition. Significant changes in the composition of soil fungal communities were observed in relation to gradients of the ratio of total organic carbon to nitrogen,…

Total organic carbonAntarctica C:N ratio Extreme environments Latitudinal gradient pH Soil fungal community composition0303 health sciencesEcology030306 microbiologyRange (biology)EcologyEcological ModelingSettore AGR/13 - Chimica AgrariaPlant ScienceMars Exploration Program15. Life on landBiologyLatitude03 medical and health sciencesOceanographyCommunity compositionSoil pHSoil waterExtreme environment14. Life underwaterEcology Evolution Behavior and Systematics030304 developmental biologyFungal Ecology
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Biogeochemical responses to nutrient, moisture and temperature manipulations of soil from Signy Island, South Orkney Islands in the Maritime Antarctic

2014

AbstractWe have investigated how the microbially-driven processes of carbon (C) mineralization (respiration) and nitrogen (N) mineralization/immobilization in a soil from the northern Maritime Antarctic respond to differences in water availability (20% and 80% water-holding capacity) and temperature (5°C and 15°C) in the presence and absence of different organic substrates (2 mg C as either glucose, glycine or tryptone soy broth (TSB) powder (a complex microbial growth medium)) in a controlled laboratory experiment over 175 days. Soil respiration and N mineralization/immobilization in the presence of a C-rich substrate (glucose) increased with increases in water and temperature. These facto…

Biogeochemical cycleMoistureChemistrySettore AGR/13 - Chimica Agrariacarbon mineralization nitrogen mineralization organic substrates soil respiration warming water additionGeologyMineralization (soil science)OceanographySoil respirationNutrientEnvironmental chemistryBotanyRespirationCyclingNitrogen cycleEcology Evolution Behavior and SystematicsAntarctic Science
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