Nutrient and temperature interactions in bioremediation of cryic soils

James L Walworth, Joan Braddock, Craig Woolard

Research output: Contribution to journalArticle

43 Citations (Scopus)

Abstract

Low temperatures and lack of available nutrients often limit the rate of microbial petroleum hydrocarbon degradation in contaminated cryic soils. Proper management of both these parameters may increase microbial respiration in such soils. Interactions between nutrient level and temperature could impact management decisions for both factors, but these interactions have not previously been adequately described. Petroleum-contaminated soils from two Alaskan sites were studied in separate laboratory experiments. Nutrients and incubation temperatures were independently varied so interactions between the two could be studied. Soil from a gravel pad near Barrow, AK responded positively to temperatures increasing from 5°C to 20°C, and to addition of 50 or 100 mg/kg of supplemental nitrogen. Soil from Ft. Wainwright, AK responded positively as temperatures were increased from 1°C to 21°C, but microbial respiration decreased when temperatures were raised to 41°C. Microbial activity increased when 100 or 200 mg/kg of supplemental nitrogen was applied. In both soils, there were positive interactions between soil temperature response and addition of nitrogen fertilizer. Microbial response to soil warming was accentuated by proper nitrogen management, and response to fertilizer application was greatest when soil was warmed.

Original languageEnglish (US)
Pages (from-to)85-91
Number of pages7
JournalCold Regions Science and Technology
Volume32
Issue number2-3
DOIs
StatePublished - Sep 2001

Fingerprint

Bioremediation
bioremediation
Nutrients
Soils
nutrient
soil
temperature
nitrogen
Temperature
respiration
Nitrogen
twenty first century
petroleum hydrocarbon
Crude oil
fertilizer application
Nitrogen fertilizers
soil temperature
microbial activity
gravel
warming

Keywords

  • Alaska
  • Cryic soils
  • Nutrients
  • Soil petroleum hydrocarbon

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)
  • Geotechnical Engineering and Engineering Geology

Cite this

Nutrient and temperature interactions in bioremediation of cryic soils. / Walworth, James L; Braddock, Joan; Woolard, Craig.

In: Cold Regions Science and Technology, Vol. 32, No. 2-3, 09.2001, p. 85-91.

Research output: Contribution to journalArticle

@article{18785ba680904d1e95a25c3985c31f2d,
title = "Nutrient and temperature interactions in bioremediation of cryic soils",
abstract = "Low temperatures and lack of available nutrients often limit the rate of microbial petroleum hydrocarbon degradation in contaminated cryic soils. Proper management of both these parameters may increase microbial respiration in such soils. Interactions between nutrient level and temperature could impact management decisions for both factors, but these interactions have not previously been adequately described. Petroleum-contaminated soils from two Alaskan sites were studied in separate laboratory experiments. Nutrients and incubation temperatures were independently varied so interactions between the two could be studied. Soil from a gravel pad near Barrow, AK responded positively to temperatures increasing from 5°C to 20°C, and to addition of 50 or 100 mg/kg of supplemental nitrogen. Soil from Ft. Wainwright, AK responded positively as temperatures were increased from 1°C to 21°C, but microbial respiration decreased when temperatures were raised to 41°C. Microbial activity increased when 100 or 200 mg/kg of supplemental nitrogen was applied. In both soils, there were positive interactions between soil temperature response and addition of nitrogen fertilizer. Microbial response to soil warming was accentuated by proper nitrogen management, and response to fertilizer application was greatest when soil was warmed.",
keywords = "Alaska, Cryic soils, Nutrients, Soil petroleum hydrocarbon",
author = "Walworth, {James L} and Joan Braddock and Craig Woolard",
year = "2001",
month = "9",
doi = "10.1016/S0165-232X(00)00020-3",
language = "English (US)",
volume = "32",
pages = "85--91",
journal = "Cold Regions, Science and Technology",
issn = "0165-232X",
publisher = "Elsevier",
number = "2-3",

}

TY - JOUR

T1 - Nutrient and temperature interactions in bioremediation of cryic soils

AU - Walworth, James L

AU - Braddock, Joan

AU - Woolard, Craig

PY - 2001/9

Y1 - 2001/9

N2 - Low temperatures and lack of available nutrients often limit the rate of microbial petroleum hydrocarbon degradation in contaminated cryic soils. Proper management of both these parameters may increase microbial respiration in such soils. Interactions between nutrient level and temperature could impact management decisions for both factors, but these interactions have not previously been adequately described. Petroleum-contaminated soils from two Alaskan sites were studied in separate laboratory experiments. Nutrients and incubation temperatures were independently varied so interactions between the two could be studied. Soil from a gravel pad near Barrow, AK responded positively to temperatures increasing from 5°C to 20°C, and to addition of 50 or 100 mg/kg of supplemental nitrogen. Soil from Ft. Wainwright, AK responded positively as temperatures were increased from 1°C to 21°C, but microbial respiration decreased when temperatures were raised to 41°C. Microbial activity increased when 100 or 200 mg/kg of supplemental nitrogen was applied. In both soils, there were positive interactions between soil temperature response and addition of nitrogen fertilizer. Microbial response to soil warming was accentuated by proper nitrogen management, and response to fertilizer application was greatest when soil was warmed.

AB - Low temperatures and lack of available nutrients often limit the rate of microbial petroleum hydrocarbon degradation in contaminated cryic soils. Proper management of both these parameters may increase microbial respiration in such soils. Interactions between nutrient level and temperature could impact management decisions for both factors, but these interactions have not previously been adequately described. Petroleum-contaminated soils from two Alaskan sites were studied in separate laboratory experiments. Nutrients and incubation temperatures were independently varied so interactions between the two could be studied. Soil from a gravel pad near Barrow, AK responded positively to temperatures increasing from 5°C to 20°C, and to addition of 50 or 100 mg/kg of supplemental nitrogen. Soil from Ft. Wainwright, AK responded positively as temperatures were increased from 1°C to 21°C, but microbial respiration decreased when temperatures were raised to 41°C. Microbial activity increased when 100 or 200 mg/kg of supplemental nitrogen was applied. In both soils, there were positive interactions between soil temperature response and addition of nitrogen fertilizer. Microbial response to soil warming was accentuated by proper nitrogen management, and response to fertilizer application was greatest when soil was warmed.

KW - Alaska

KW - Cryic soils

KW - Nutrients

KW - Soil petroleum hydrocarbon

UR - http://www.scopus.com/inward/record.url?scp=0035443374&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035443374&partnerID=8YFLogxK

U2 - 10.1016/S0165-232X(00)00020-3

DO - 10.1016/S0165-232X(00)00020-3

M3 - Article

AN - SCOPUS:0035443374

VL - 32

SP - 85

EP - 91

JO - Cold Regions, Science and Technology

JF - Cold Regions, Science and Technology

SN - 0165-232X

IS - 2-3

ER -