Response of microbial activity to labile C addition in sandy soil from semi-arid woodland is influenced by vegetation patch and wildfire

Nutrient cycling in semi-arid woodlands is likely to be influenced by patchy vegetation, wildfire and the supply of easily available organic C, e.g. root exudates. The study assessed the effect of wildfire and vegetation patch on response of microbial activity to labile C addition in soil from a sem...

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Autores principales:	Sun,Qiaoqi, Meyer,Wayne S., Koerber,Georgia R., Marschner,Petra
Lenguaje:	English
Publicado:	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo 2017
Materias:	Cumulative respiration Glucose Microbial biomass Semi-arid woodland Vegetation patch Wildfire
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162017000100006
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spelling	oai:scielo:S0718-951620170001000062017-09-27Response of microbial activity to labile C addition in sandy soil from semi-arid woodland is influenced by vegetation patch and wildfireSun,QiaoqiMeyer,Wayne S.Koerber,Georgia R.Marschner,Petra Cumulative respiration Glucose Microbial biomass Semi-arid woodland Vegetation patch Wildfire Nutrient cycling in semi-arid woodlands is likely to be influenced by patchy vegetation, wildfire and the supply of easily available organic C, e.g. root exudates. The study assessed the effect of wildfire and vegetation patch on response of microbial activity to labile C addition in soil from a semi-arid Eucalyptus woodland. Two sites were studied: one unburnt and the other exposed to wildfire four-month before sampling. Top soil (0 - 30 cm) from under trees, under shrubs or in open areas from each site was air-dried and sieved to < 2 mm. The soils were incubated at 80% of maximum water holding capacity for 24 days without or with addition of 5 g C kg-1 as glucose. Soil organic carbon (TOC), microbial biomass C, N and P availability and cumulative respiration were greater under trees than in open areas. Fire decreased TOC and cumulative respiration only under trees and had little effect on available N, microbial biomass C and P concentrations. The greater increase in cumulative respiration by glucose addition under shrubs and in open areas compared to under trees and, in a given patch, greater in burnt than unburnt soils, indicate lower availability of native organic carbon.info:eu-repo/semantics/openAccessChilean Society of Soil Science / Sociedad Chilena de la Ciencia del SueloJournal of soil science and plant nutrition v.17 n.1 20172017-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162017000100006en10.4067/S0718-95162017005000005
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Cumulative respiration Glucose Microbial biomass Semi-arid woodland Vegetation patch Wildfire
spellingShingle	Cumulative respiration Glucose Microbial biomass Semi-arid woodland Vegetation patch Wildfire Sun,Qiaoqi Meyer,Wayne S. Koerber,Georgia R. Marschner,Petra Response of microbial activity to labile C addition in sandy soil from semi-arid woodland is influenced by vegetation patch and wildfire
description	Nutrient cycling in semi-arid woodlands is likely to be influenced by patchy vegetation, wildfire and the supply of easily available organic C, e.g. root exudates. The study assessed the effect of wildfire and vegetation patch on response of microbial activity to labile C addition in soil from a semi-arid Eucalyptus woodland. Two sites were studied: one unburnt and the other exposed to wildfire four-month before sampling. Top soil (0 - 30 cm) from under trees, under shrubs or in open areas from each site was air-dried and sieved to < 2 mm. The soils were incubated at 80% of maximum water holding capacity for 24 days without or with addition of 5 g C kg-1 as glucose. Soil organic carbon (TOC), microbial biomass C, N and P availability and cumulative respiration were greater under trees than in open areas. Fire decreased TOC and cumulative respiration only under trees and had little effect on available N, microbial biomass C and P concentrations. The greater increase in cumulative respiration by glucose addition under shrubs and in open areas compared to under trees and, in a given patch, greater in burnt than unburnt soils, indicate lower availability of native organic carbon.
author	Sun,Qiaoqi Meyer,Wayne S. Koerber,Georgia R. Marschner,Petra
author_facet	Sun,Qiaoqi Meyer,Wayne S. Koerber,Georgia R. Marschner,Petra
author_sort	Sun,Qiaoqi
title	Response of microbial activity to labile C addition in sandy soil from semi-arid woodland is influenced by vegetation patch and wildfire
title_short	Response of microbial activity to labile C addition in sandy soil from semi-arid woodland is influenced by vegetation patch and wildfire
title_full	Response of microbial activity to labile C addition in sandy soil from semi-arid woodland is influenced by vegetation patch and wildfire
title_fullStr	Response of microbial activity to labile C addition in sandy soil from semi-arid woodland is influenced by vegetation patch and wildfire
title_full_unstemmed	Response of microbial activity to labile C addition in sandy soil from semi-arid woodland is influenced by vegetation patch and wildfire
title_sort	response of microbial activity to labile c addition in sandy soil from semi-arid woodland is influenced by vegetation patch and wildfire
publisher	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo
publishDate	2017
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162017000100006
work_keys_str_mv	AT sunqiaoqi responseofmicrobialactivitytolabilecadditioninsandysoilfromsemiaridwoodlandisinfluencedbyvegetationpatchandwildfire AT meyerwaynes responseofmicrobialactivitytolabilecadditioninsandysoilfromsemiaridwoodlandisinfluencedbyvegetationpatchandwildfire AT koerbergeorgiar responseofmicrobialactivitytolabilecadditioninsandysoilfromsemiaridwoodlandisinfluencedbyvegetationpatchandwildfire AT marschnerpetra responseofmicrobialactivitytolabilecadditioninsandysoilfromsemiaridwoodlandisinfluencedbyvegetationpatchandwildfire
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Response of microbial activity to labile C addition in sandy soil from semi-arid woodland is influenced by vegetation patch and wildfire

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