Spatial distribution of bacterial communities and their relationships with the micro-architecture of soil

Naoise Nunan, Kejian Wu, Iain M. Young, John W. Crawford, Karl Ritz

Research output: Contribution to journalArticle

  • 150 Citations

Abstract

Biological soil thin-sections and a combination of image analysis and geostatistical tools were used to conduct a detailed investigation into the distribution of bacteria in soil and their relationship with pores. The presence of spatial patterns in the distribution of bacteria was demonstrated at the microscale, with ranges of spatial autocorrelation of 1 mm and below. Bacterial density gradients were found within bacterial patches in topsoil samples and also in one subsoil sample. Bacterial density patches displayed a mosaic of high and low values in the remaining subsoil samples. Anisotropy was detected in the spatial structure of pores, but was not detected in relation to the distribution of bacteria. No marked trend as a function of distance to the nearest pore was observed in bacterial density values in the topsoil, but in the subsoil bacterial density was greatest close to pores and decreased thereafter. Bacterial aggregation was greatest in the cropped topsoil, though no consistent trends were found in the degree of bacterial aggregation as a function of distance to the nearest pore. The implications of the results presented for modelling and predicting bacterial activity in soil are discussed.
Original languageEnglish
Pages (from-to)203-215
Number of pages13
JournalFEMS Microbiology Ecology
Volume44
Issue number2
DOIs
StatePublished - 15 May 2003

Fingerprint

soil
subsoil
topsoil
bacterium
thin section
image analysis
autocorrelation
microbial activity
anisotropy
spatial distribution
modeling

Cite this

Nunan, Naoise; Wu, Kejian; Young, Iain M.; Crawford, John W.; Ritz, Karl / Spatial distribution of bacterial communities and their relationships with the micro-architecture of soil.

In: FEMS Microbiology Ecology, Vol. 44, No. 2, 15.05.2003, p. 203-215.

Research output: Contribution to journalArticle

@article{f4d8ff6cca924e18a0df25308bf89214,
title = "Spatial distribution of bacterial communities and their relationships with the micro-architecture of soil",
abstract = "Biological soil thin-sections and a combination of image analysis and geostatistical tools were used to conduct a detailed investigation into the distribution of bacteria in soil and their relationship with pores. The presence of spatial patterns in the distribution of bacteria was demonstrated at the microscale, with ranges of spatial autocorrelation of 1 mm and below. Bacterial density gradients were found within bacterial patches in topsoil samples and also in one subsoil sample. Bacterial density patches displayed a mosaic of high and low values in the remaining subsoil samples. Anisotropy was detected in the spatial structure of pores, but was not detected in relation to the distribution of bacteria. No marked trend as a function of distance to the nearest pore was observed in bacterial density values in the topsoil, but in the subsoil bacterial density was greatest close to pores and decreased thereafter. Bacterial aggregation was greatest in the cropped topsoil, though no consistent trends were found in the degree of bacterial aggregation as a function of distance to the nearest pore. The implications of the results presented for modelling and predicting bacterial activity in soil are discussed.",
author = "Naoise Nunan and Kejian Wu and Young, {Iain M.} and Crawford, {John W.} and Karl Ritz",
year = "2003",
month = "5",
doi = "10.1016/s0168-6496(03)00027-8",
volume = "44",
pages = "203--215",
journal = "FEMS Microbiology Ecology",
issn = "0168-6496",
publisher = "Wiley-Blackwell",
number = "2",

}

Spatial distribution of bacterial communities and their relationships with the micro-architecture of soil. / Nunan, Naoise; Wu, Kejian; Young, Iain M.; Crawford, John W.; Ritz, Karl.

In: FEMS Microbiology Ecology, Vol. 44, No. 2, 15.05.2003, p. 203-215.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Spatial distribution of bacterial communities and their relationships with the micro-architecture of soil

AU - Nunan,Naoise

AU - Wu,Kejian

AU - Young,Iain M.

AU - Crawford,John W.

AU - Ritz,Karl

PY - 2003/5/15

Y1 - 2003/5/15

N2 - Biological soil thin-sections and a combination of image analysis and geostatistical tools were used to conduct a detailed investigation into the distribution of bacteria in soil and their relationship with pores. The presence of spatial patterns in the distribution of bacteria was demonstrated at the microscale, with ranges of spatial autocorrelation of 1 mm and below. Bacterial density gradients were found within bacterial patches in topsoil samples and also in one subsoil sample. Bacterial density patches displayed a mosaic of high and low values in the remaining subsoil samples. Anisotropy was detected in the spatial structure of pores, but was not detected in relation to the distribution of bacteria. No marked trend as a function of distance to the nearest pore was observed in bacterial density values in the topsoil, but in the subsoil bacterial density was greatest close to pores and decreased thereafter. Bacterial aggregation was greatest in the cropped topsoil, though no consistent trends were found in the degree of bacterial aggregation as a function of distance to the nearest pore. The implications of the results presented for modelling and predicting bacterial activity in soil are discussed.

AB - Biological soil thin-sections and a combination of image analysis and geostatistical tools were used to conduct a detailed investigation into the distribution of bacteria in soil and their relationship with pores. The presence of spatial patterns in the distribution of bacteria was demonstrated at the microscale, with ranges of spatial autocorrelation of 1 mm and below. Bacterial density gradients were found within bacterial patches in topsoil samples and also in one subsoil sample. Bacterial density patches displayed a mosaic of high and low values in the remaining subsoil samples. Anisotropy was detected in the spatial structure of pores, but was not detected in relation to the distribution of bacteria. No marked trend as a function of distance to the nearest pore was observed in bacterial density values in the topsoil, but in the subsoil bacterial density was greatest close to pores and decreased thereafter. Bacterial aggregation was greatest in the cropped topsoil, though no consistent trends were found in the degree of bacterial aggregation as a function of distance to the nearest pore. The implications of the results presented for modelling and predicting bacterial activity in soil are discussed.

U2 - 10.1016/s0168-6496(03)00027-8

DO - 10.1016/s0168-6496(03)00027-8

M3 - Article

VL - 44

SP - 203

EP - 215

JO - FEMS Microbiology Ecology

T2 - FEMS Microbiology Ecology

JF - FEMS Microbiology Ecology

SN - 0168-6496

IS - 2

ER -