H.A. Kettles - Concepedia

Author

H.A. Kettles

Manaaki Whenua – Landcare Research

Also Known As

H. A. Kettles, H.A Kettles, H.A. Kettles, Helen A. Kettles

Publications

926

Citations

H-Index

Concepts

All Affiliations

Manaaki Whenua – Landcare Research Van Hall Larenstein University of Applied Sciences New Zealand Institute for Public Health and Forensic Science GNS Science

About

H.A. Kettles is an author at Manaaki Whenua – Landcare Research specializing in engineering, environmental engineering, and biogeochemistry.

Top Concepts

#	Concept	H-Index	Publications	Citations
1	Engineering	11	11	912
2	Environmental Engineering	8	8	590
3	Medicine	2	2	224
4	Public Health	2	2	54
5	Social Sciences	1	1	14

H.A. Kettles

Publications

926

Citations

H-Index

Page 1

	Year	Citations
Is soil acidification the cause of biochemical responses when soils are amended with heavy metal salts? T. W. Speir, H.A. Kettles, H. J. Percival, Soil Biology and Biochemistry Environmental ChemistryEngineeringEnvironmental EngineeringHeavy Metal SaltsSoil Chemistry	1999	158
Impact of pasture contamination by copper, chromium, and arsenic timber preservative on soil microbial properties and nematodes Richard D. Bardgett, T. W. Speir, D.J. Ross, Biology and Fertility of Soils Soil Microbial PropertiesEngineeringPasture ContaminationMetal ContaminationSoil Chemistry	1994	135
A simple kinetic approach to derive the ecological dose value, ED50, for the assessment of Cr(VI) toxicity to soil biological properties T. W. Speir, H.A. Kettles, A. Parshotam, Soil Biology and Biochemistry EngineeringEnvironmental EngineeringSoil PollutionSoil ChemistrySoil Biochemistry	1995	125
Impact of Land‐Applied Tertiary‐Treated Effluent on Soil Biochemical Properties Louis A. Schipper, Julie C. Williamson, H.A. Kettles, Journal of Environmental Quality Basal RespirationBiogeochemistryEngineeringSoil EcologyEnvironmental Engineering	1996	109
Changes in soil organic C, microbial C and aggregate stability under continuous maize and cereal cropping, and after restoration to pasture in soils from the Manawatu region, New Zealand Graham P. Sparling, T. Graham Shepherd, H.A. Kettles Soil and Tillage Research BiogeochemistryEngineeringSoil EcologySoil Organic MatterNew Zealand	1992	98
Soil microbial biomass, C and N mineralization and enzyme activities in a hill pasture: Influence of season and slow-release P and S fertilizer D.J. Ross, T. W. Speir, H.A. Kettles, Soil Biology and Biochemistry N MineralizationBiogeochemistryEngineeringAgricultural EconomicsSoil Biochemistry	1995	89
Simple kinetic approach to determine the toxicity of AS[V] to soil biological properties T. W. Speir, H.A. Kettles, A. Parshotam, Soil Biology and Biochemistry EngineeringEnvironmental EngineeringSoil PollutionBioremediationSoil Chemistry	1999	81
Temporal response of soil biochemical properties in a pastoral soil after cultivation following high application rates of undigested sewage sludge T. W. Speir, Andrew P. van Schaik, A. R. Lloyd-Jones, Biology and Fertility of Soils Sewage Sludge TreatmentEngineeringEnvironmental EngineeringBioremediationEnvironmental Remediation	2003	46
Soil and Stream‐Water Impacts of Sewage Effluent Irrigation onto Steeply Sloping Land T. W. Speir, Andrew P. van Schaik, H.A. Kettles, Journal of Environmental Quality EngineeringLand ApplicationLand DegradationSteeply Sloping LandWastewater Treatment	1999	40
Aerobic emissions of N2O and N2 from soil cores: Factors influencing production from 13N-labelled NO3− and NH4+ T. W. Speir, H.A. Kettles, R.D. More Soil Biology and Biochemistry Soil GasBiogeochemistryEngineeringEnvironmental EngineeringBiogeochemical Cycle	1995	16

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