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Monitoring Hydrologic Controls on Bi...

Pulvermacher, Laine.

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Monitoring Hydrologic Controls on Biogeochemical Process Variability in Green Infrastructure Soils.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Monitoring Hydrologic Controls on Biogeochemical Process Variability in Green Infrastructure Soils./
Author:	Pulvermacher, Laine.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2020,
Description:	87 p.
Notes:	Source: Masters Abstracts International, Volume: 81-10.
Contained By:	Masters Abstracts International81-10.
Subject:	Environmental engineering. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=27831671
ISBN:	9798607319151

Monitoring Hydrologic Controls on Biogeochemical Process Variability in Green Infrastructure Soils.
Pulvermacher, Laine.

Monitoring Hydrologic Controls on Biogeochemical Process Variability in Green Infrastructure Soils. - Ann Arbor : ProQuest Dissertations & Theses, 2020 - 87 p.

Source: Masters Abstracts International, Volume: 81-10.

Thesis (M.S.)--Marquette University, 2020.

This item must not be sold to any third party vendors.

The premise of this research was to monitor biogeochemical responses to soil moisture and soil temperature within green stormwater infrastructure soils. Adopting best management practices like green infrastructure in urban areas has the potential to remove incoming nutrients from stormwater runoff through biogeochemical processes, like plant and microbial metabolism. Biogeochemical activity has been suggested to be highly variable, so this research proposed to monitor that variability by tracking the stoichiometry of soil respiration. Additionally, an advection-diffusion-reaction model was used to disaggregate physical and biogeochemical controls on the observed soil respiration. The field data was collected to investigate the biogeochemical processes, their response to soil conditions, and their spatial and temporal variability. Field results showed soil respiration increased with soil moisture at all sites except a wetland lowland plot. The model simulations from the advection-diffusion-reaction model suggested that the soil gas response to soil moisture was driven by biogeochemical process rates rather than the physical processes of gas transport. Soil temperature was related to soil respiration, but the relationship depended on the season and green infrastructure site. The monitored gas concentrations in the green infrastructure soils suggested the carbon dioxide was lower than what is needed for soil respiration to be the main driver of the gas ratios. Instead, abiotic processes like carbon dioxide dissolution or biotic processes like methanogenesis metabolism may be decreasing the carbon dioxide concentrations. Additionally, the field soils may be well aerated causing the oxygen concentrations to be higher than anticipated soil concentrations if soil respiration was the main biogeochemical process driving the gas concentrations. There is little known about the biogeochemistry of green infrastructure soils, and more studies are needed for improved understanding of these engineered systems, including better identifying the biogeochemical processes, modeling the systems, and long-term monitoring.

ISBN: 9798607319151Subjects--Topical Terms:

548583
Environmental engineering.
Subjects--Index Terms:

Apparent respiratory quotient

Monitoring Hydrologic Controls on Biogeochemical Process Variability in Green Infrastructure Soils.
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300 $a 87 p.
500 $a Source: Masters Abstracts International, Volume: 81-10.
500 $a Advisor: Parolari, Anthony J.
502 $a Thesis (M.S.)--Marquette University, 2020.
506 $a This item must not be sold to any third party vendors.
520 $a The premise of this research was to monitor biogeochemical responses to soil moisture and soil temperature within green stormwater infrastructure soils. Adopting best management practices like green infrastructure in urban areas has the potential to remove incoming nutrients from stormwater runoff through biogeochemical processes, like plant and microbial metabolism. Biogeochemical activity has been suggested to be highly variable, so this research proposed to monitor that variability by tracking the stoichiometry of soil respiration. Additionally, an advection-diffusion-reaction model was used to disaggregate physical and biogeochemical controls on the observed soil respiration. The field data was collected to investigate the biogeochemical processes, their response to soil conditions, and their spatial and temporal variability. Field results showed soil respiration increased with soil moisture at all sites except a wetland lowland plot. The model simulations from the advection-diffusion-reaction model suggested that the soil gas response to soil moisture was driven by biogeochemical process rates rather than the physical processes of gas transport. Soil temperature was related to soil respiration, but the relationship depended on the season and green infrastructure site. The monitored gas concentrations in the green infrastructure soils suggested the carbon dioxide was lower than what is needed for soil respiration to be the main driver of the gas ratios. Instead, abiotic processes like carbon dioxide dissolution or biotic processes like methanogenesis metabolism may be decreasing the carbon dioxide concentrations. Additionally, the field soils may be well aerated causing the oxygen concentrations to be higher than anticipated soil concentrations if soil respiration was the main biogeochemical process driving the gas concentrations. There is little known about the biogeochemistry of green infrastructure soils, and more studies are needed for improved understanding of these engineered systems, including better identifying the biogeochemical processes, modeling the systems, and long-term monitoring.
590 $a School code: 0116.
650 4 $a Environmental engineering. $3 548583
650 4 $a Water resources management. $3 794747
653 $a Apparent respiratory quotient
653 $a Biogeochemical processes
653 $a Green stormwater Infrastructure
653 $a Soil gas transport
653 $a Soil moisture
690 $a 0775
690 $a 0595
710 2 $a Marquette University. $b Civil Engineering. $3 3188254
773 0 $t Masters Abstracts International $g 81-10.
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791 $a M.S.
792 $a 2020
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=27831671