Differences in soil biological activity by terrain types at the sub-field scale in central Iowa US
Abstract
Soil microbial communities are structured by biogeochemical processes that occur at many different spatial scales, which makes soil sampling difficult. Because soil microbial communities are important in nutrient cycling and soil fertility, it is important to understand how microbial communities function within the heterogeneous soil landscape. In this study, a self-organizing map was used to determine whether landscape data can be used to characterize the distribution of microbial biomass and activity in order to provide an improved understanding of soil microbial community function. Points within a row crop field in south-central Iowa were clustered via a self-organizing map using six landscape properties into three separate landscape clusters. Twelve sampling locations per cluster were chosen for a total of 36 locations. After the soil samples were collected, the samples were then analysed for various metabolic indicators, such as nitrogen and carbon mineralization, extractable organic carbon, microbial biomass, etc. It was found that sampling locations located in the potholes and toe slope positions had significantly greater microbial biomass nitrogen and carbon, total carbon, total nitrogen and extractable organic carbon than the other two landscape position clusters, while locations located on the upslope did not differ significantly from the other landscape clusters. However,more »
- Authors:
-
[1];
- Iowa State Univ., Ames, IA (United States)
- Univ. of Nebraska, Lincoln, NE (United States)
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Iowa State Univ., Ames, IA (United States)
- Tennessee State Univ., Nashville, TN (United States)
- Publication Date:
- Research Org.:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1378017
- Report Number(s):
- PNNL-SA-127024
Journal ID: ISSN 1932-6203
- Grant/Contract Number:
- AC05-76RL01830
- Resource Type:
- Accepted Manuscript
- Journal Name:
- PLoS ONE
- Additional Journal Information:
- Journal Volume: 12; Journal Issue: 7; Journal ID: ISSN 1932-6203
- Publisher:
- Public Library of Science
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 59 BASIC BIOLOGICAL SCIENCES; 54 ENVIRONMENTAL SCIENCES; agriculture soil science; neurons; soil ecology; biomass (ecology); clustering algorithms; data visualization; nitrates; toes
Citation Formats
Kaleita, Amy L., Schott, Linda R., Hargreaves, Sarah K., Hofmockel, Kirsten S., and Hui, Dafeng. Differences in soil biological activity by terrain types at the sub-field scale in central Iowa US. United States: N. p., 2017.
Web. doi:10.1371/journal.pone.0180596.
Kaleita, Amy L., Schott, Linda R., Hargreaves, Sarah K., Hofmockel, Kirsten S., & Hui, Dafeng. Differences in soil biological activity by terrain types at the sub-field scale in central Iowa US. United States. https://doi.org/10.1371/journal.pone.0180596
Kaleita, Amy L., Schott, Linda R., Hargreaves, Sarah K., Hofmockel, Kirsten S., and Hui, Dafeng. Fri .
"Differences in soil biological activity by terrain types at the sub-field scale in central Iowa US". United States. https://doi.org/10.1371/journal.pone.0180596. https://www.osti.gov/servlets/purl/1378017.
@article{osti_1378017,
title = {Differences in soil biological activity by terrain types at the sub-field scale in central Iowa US},
author = {Kaleita, Amy L. and Schott, Linda R. and Hargreaves, Sarah K. and Hofmockel, Kirsten S. and Hui, Dafeng},
abstractNote = {Soil microbial communities are structured by biogeochemical processes that occur at many different spatial scales, which makes soil sampling difficult. Because soil microbial communities are important in nutrient cycling and soil fertility, it is important to understand how microbial communities function within the heterogeneous soil landscape. In this study, a self-organizing map was used to determine whether landscape data can be used to characterize the distribution of microbial biomass and activity in order to provide an improved understanding of soil microbial community function. Points within a row crop field in south-central Iowa were clustered via a self-organizing map using six landscape properties into three separate landscape clusters. Twelve sampling locations per cluster were chosen for a total of 36 locations. After the soil samples were collected, the samples were then analysed for various metabolic indicators, such as nitrogen and carbon mineralization, extractable organic carbon, microbial biomass, etc. It was found that sampling locations located in the potholes and toe slope positions had significantly greater microbial biomass nitrogen and carbon, total carbon, total nitrogen and extractable organic carbon than the other two landscape position clusters, while locations located on the upslope did not differ significantly from the other landscape clusters. However, factors such as nitrate, ammonia, and nitrogen and carbon mineralization did not differ significantly across the landscape. Altogether, this research demonstrates the effectiveness of a terrain-based clustering method for guiding soil sampling of microbial communities.},
doi = {10.1371/journal.pone.0180596},
journal = {PLoS ONE},
number = 7,
volume = 12,
place = {United States},
year = {Fri Jul 07 00:00:00 EDT 2017},
month = {Fri Jul 07 00:00:00 EDT 2017}
}
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