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Spatial patterns in soil physicochemical and microbiological properties in a grassland adjacent to a newly built lake

Soil water content (SWC) is an important determinant for nutrient cycling and microorganism activity in the grassland ecosystem. Lakes have a positive effect on the water supply of the neighboring ecosystem. However, information evaluating whether newly built lakes improve the physiochemical propert...

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Published in:MicrobiologyOpen (Weinheim) 2019-12, Vol.8 (12), p.e912-n/a
Main Authors: Li, Jinsheng, An, Chan, Shang, Jianying, Zhao, Tianchi, Zhang, Qian, Yang, Xiaomeng, Ren, Cheng, Huang, Ding, Liu, Kesi, Shao, Xinqing
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description Soil water content (SWC) is an important determinant for nutrient cycling and microorganism activity in the grassland ecosystem. Lakes have a positive effect on the water supply of the neighboring ecosystem. However, information evaluating whether newly built lakes improve the physiochemical properties and microorganism activity of adjacent grassland soil is rare. A 15‐hectare artificial lake with a 2 m depth was built on grazed grassland to determine whether the change of soil physiochemical properties and microorganism activity of the adjacent grassland depended on the distance from the lake. SWC and total nitrogen (TN) were greater within 150 m of the lake than at distances over 150 m from the lake. The total organic carbon (TOC) increased first at 100–150 m from the lake and then decreased. The soil microbial biomass and the bacterial and fungal contents increased with increasing years after the construction of the lake. Gram‐negative bacteria and methanotrophic bacteria were greater within a 30 m distance of the lake. Over 60 m away from the lake, Actinobacteria, gram‐positive bacteria, and anaerobic bacteria showed higher abundances. In the area near the lake (
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Lakes have a positive effect on the water supply of the neighboring ecosystem. However, information evaluating whether newly built lakes improve the physiochemical properties and microorganism activity of adjacent grassland soil is rare. A 15‐hectare artificial lake with a 2 m depth was built on grazed grassland to determine whether the change of soil physiochemical properties and microorganism activity of the adjacent grassland depended on the distance from the lake. SWC and total nitrogen (TN) were greater within 150 m of the lake than at distances over 150 m from the lake. The total organic carbon (TOC) increased first at 100–150 m from the lake and then decreased. The soil microbial biomass and the bacterial and fungal contents increased with increasing years after the construction of the lake. Gram‐negative bacteria and methanotrophic bacteria were greater within a 30 m distance of the lake. Over 60 m away from the lake, Actinobacteria, gram‐positive bacteria, and anaerobic bacteria showed higher abundances. In the area near the lake (&lt;250 m distance), microorganisms were strongly correlated with SWC, EC, TN, and TOC and greatly correlated with the changes of total phosphorous (TP) and pH when the distance from the lake was over 250 m. The results indicated that the newly built lake could be a driving factor for improving the physiochemical properties and microorganism activity of adjacent grassland soil within a certain range. The new‐built lake increased the soil water content, total nitrogen, and total organic carbon of near‐lake grassland. Soil microbial biomass, bacteria, and fungi content of adjacent grassland increased with the increase of the built‐time of lake. The new‐built lake changed the sensitivity and relationship between microorganisms and soil physiochemical properties of adjacent grassland.</description><identifier>ISSN: 2045-8827</identifier><identifier>EISSN: 2045-8827</identifier><identifier>DOI: 10.1002/mbo3.912</identifier><identifier>PMID: 31472010</identifier><language>eng</language><publisher>England: John Wiley &amp; Sons, Inc</publisher><subject>Aluminum ; Anaerobic bacteria ; Aquatic ecosystems ; Aquatic soils ; Artificial lakes ; Bacteria ; Biomarkers ; Biomass ; Carbon ; Chemical Phenomena ; Construction ; Ecosystem ; Ecosystems ; Fatty acids ; Gram-negative bacteria ; Grassland ; Grasslands ; grazing grassland ; Lakes ; Methanotrophic bacteria ; Microorganisms ; Moisture content ; Nitrogen ; Nitrogen - analysis ; Nutrient content ; Nutrient cycles ; Organic carbon ; Original ; Phosphorus - analysis ; Phosphorus - chemistry ; Physiochemistry ; Precipitation ; Soil - chemistry ; Soil Microbiology ; Soil microorganisms ; Soil properties ; soil property ; Soil water ; soil water content ; Soils ; Spatial Analysis ; Taxonomy ; the newly built lake ; Total organic carbon ; Water content ; Water depth ; Water shortages ; Water supply</subject><ispartof>MicrobiologyOpen (Weinheim), 2019-12, Vol.8 (12), p.e912-n/a</ispartof><rights>2019 The Authors. published by John Wiley &amp; Sons Ltd.</rights><rights>2019 The Authors. 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Lakes have a positive effect on the water supply of the neighboring ecosystem. However, information evaluating whether newly built lakes improve the physiochemical properties and microorganism activity of adjacent grassland soil is rare. A 15‐hectare artificial lake with a 2 m depth was built on grazed grassland to determine whether the change of soil physiochemical properties and microorganism activity of the adjacent grassland depended on the distance from the lake. SWC and total nitrogen (TN) were greater within 150 m of the lake than at distances over 150 m from the lake. The total organic carbon (TOC) increased first at 100–150 m from the lake and then decreased. The soil microbial biomass and the bacterial and fungal contents increased with increasing years after the construction of the lake. Gram‐negative bacteria and methanotrophic bacteria were greater within a 30 m distance of the lake. Over 60 m away from the lake, Actinobacteria, gram‐positive bacteria, and anaerobic bacteria showed higher abundances. In the area near the lake (&lt;250 m distance), microorganisms were strongly correlated with SWC, EC, TN, and TOC and greatly correlated with the changes of total phosphorous (TP) and pH when the distance from the lake was over 250 m. The results indicated that the newly built lake could be a driving factor for improving the physiochemical properties and microorganism activity of adjacent grassland soil within a certain range. The new‐built lake increased the soil water content, total nitrogen, and total organic carbon of near‐lake grassland. Soil microbial biomass, bacteria, and fungi content of adjacent grassland increased with the increase of the built‐time of lake. 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subjects Aluminum
Anaerobic bacteria
Aquatic ecosystems
Aquatic soils
Artificial lakes
Bacteria
Biomarkers
Biomass
Carbon
Chemical Phenomena
Construction
Ecosystem
Ecosystems
Fatty acids
Gram-negative bacteria
Grassland
Grasslands
grazing grassland
Lakes
Methanotrophic bacteria
Microorganisms
Moisture content
Nitrogen
Nitrogen - analysis
Nutrient content
Nutrient cycles
Organic carbon
Original
Phosphorus - analysis
Phosphorus - chemistry
Physiochemistry
Precipitation
Soil - chemistry
Soil Microbiology
Soil microorganisms
Soil properties
soil property
Soil water
soil water content
Soils
Spatial Analysis
Taxonomy
the newly built lake
Total organic carbon
Water content
Water depth
Water shortages
Water supply
title Spatial patterns in soil physicochemical and microbiological properties in a grassland adjacent to a newly built lake
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