東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

Evaluating the Impacts of Various Co...

Sharma, Manju,

Linked to FindBook

Google Book

Amazon

博客來

Evaluating the Impacts of Various Contaminants on Sediment Microbiomes and Methane Emission in the Kanawha River Ecosystem /

Record Type:	Electronic resources : Monograph/item
Title/Author:	Evaluating the Impacts of Various Contaminants on Sediment Microbiomes and Methane Emission in the Kanawha River Ecosystem // Manju Sharma.
Author:	Sharma, Manju,
Description:	1 electronic resource (108 pages)
Notes:	Source: Masters Abstracts International, Volume: 87-05.
Contained By:	Masters Abstracts International87-05.
Subject:	Environmental science. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=32280603
ISBN:	9798297964570

Evaluating the Impacts of Various Contaminants on Sediment Microbiomes and Methane Emission in the Kanawha River Ecosystem /
Sharma, Manju,

Evaluating the Impacts of Various Contaminants on Sediment Microbiomes and Methane Emission in the Kanawha River Ecosystem /Manju Sharma. - 1 electronic resource (108 pages)

Source: Masters Abstracts International, Volume: 87-05.

Rivers act as biogeochemical reactors in the global carbon cycle, where sediments serve as hotspots of microbial activity and methane production. However, industrialization and urbanization have increasingly altered sediment chemistry and microbial processes, influencing key ecosystem functions. Understanding how contaminants interact with sediment properties to shape microbial diversity and methane generation is essential for predicting biogeochemical responses in riverine environments. This study investigates how sediment properties and contaminants exposure shape microbial diversity and methane production in the Kanawha River watershed, West Virginia. Sediments were collected from the riverbed of Kanawha River and Cabin Creek. Chemical analyses indicated that SO₄²⁻ was a site-specific chemical signature for Cabin Creek which is highly affected by coal mining. Microcosm experiments assessed methane emissions and microbial community responses to contaminants such as NaCl, crude oil, refined oil, polycyclic aromatic hydrocarbons (pyrene, acenaphthene and fluoranthene), pyrethroid and asphalt. A Biochemical Methane Potential (BMP) test using cellulose as an amendment was found to distinguish methane potential in different sediments. Contaminant amendments demonstrated that salinity and PAHs inhibited methane production, whereas cellulose and pyrethroid stimulated it, and combined treatments produced non-additive effects. Microbial diversity analyses revealed that substrate availability and contaminant toxicity drive community restructuring, with pollutant-degrading taxa and methanogens responding dynamically to environmental stressors. These findings highlight the importance of microbial diversity and type of chemical contaminants and their interactions in the decomposition of organic matter and regulating methane emissions within riverine ecosystems.

English

ISBN: 9798297964570Subjects--Topical Terms:

677245
Environmental science.
Subjects--Index Terms:

Methane emissions

Evaluating the Impacts of Various Contaminants on Sediment Microbiomes and Methane Emission in the Kanawha River Ecosystem /
LDR:03365nmm a22004573i 4500 001 2438142
005 20251130221841.5
006 m o d
007 cr|nu||||||||
008 261011s2025 miu||||||m |||||||eng d
020 $a 9798297964570
035 $a (MiAaPQD)AAI32280603
035 $a AAI32280603
040 $a MiAaPQD $b eng $c MiAaPQD $e rda
100 1 $a Sharma, Manju, $e author. $3 3829358
245 1 0 $a Evaluating the Impacts of Various Contaminants on Sediment Microbiomes and Methane Emission in the Kanawha River Ecosystem / $c Manju Sharma.
264 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2025
300 $a 1 electronic resource (108 pages)
336 $a text $b txt $2 rdacontent
337 $a computer $b c $2 rdamedia
338 $a online resource $b cr $2 rdacarrier
500 $a Source: Masters Abstracts International, Volume: 87-05.
500 $a Advisors: Huber, David H. Committee members: Hass, Amir; Rojano, Fernando.
502 $b M.S. $c West Virginia State University $d 2025.
520 $a Rivers act as biogeochemical reactors in the global carbon cycle, where sediments serve as hotspots of microbial activity and methane production. However, industrialization and urbanization have increasingly altered sediment chemistry and microbial processes, influencing key ecosystem functions. Understanding how contaminants interact with sediment properties to shape microbial diversity and methane generation is essential for predicting biogeochemical responses in riverine environments. This study investigates how sediment properties and contaminants exposure shape microbial diversity and methane production in the Kanawha River watershed, West Virginia. Sediments were collected from the riverbed of Kanawha River and Cabin Creek. Chemical analyses indicated that SO₄²⁻ was a site-specific chemical signature for Cabin Creek which is highly affected by coal mining. Microcosm experiments assessed methane emissions and microbial community responses to contaminants such as NaCl, crude oil, refined oil, polycyclic aromatic hydrocarbons (pyrene, acenaphthene and fluoranthene), pyrethroid and asphalt. A Biochemical Methane Potential (BMP) test using cellulose as an amendment was found to distinguish methane potential in different sediments. Contaminant amendments demonstrated that salinity and PAHs inhibited methane production, whereas cellulose and pyrethroid stimulated it, and combined treatments produced non-additive effects. Microbial diversity analyses revealed that substrate availability and contaminant toxicity drive community restructuring, with pollutant-degrading taxa and methanogens responding dynamically to environmental stressors. These findings highlight the importance of microbial diversity and type of chemical contaminants and their interactions in the decomposition of organic matter and regulating methane emissions within riverine ecosystems.
546 $a English
590 $a School code: 2622
650 4 $a Environmental science. $3 677245
650 4 $a Ecology. $3 516476
650 4 $a Organic chemistry. $3 523952
650 4 $a Water resources management. $3 794747
650 4 $a Biogeochemistry. $3 545717
653 $a Methane emissions
653 $a Microbiomes
653 $a Water quality
653 $a Coal mining
653 $a Carbon cycles
690 $a 0768
690 $a 0329
690 $a 0490
690 $a 0595
690 $a 0425
710 2 $a West Virginia State University . $b Natural Sciences and Mathematics. $e degree granting institution. $3 3829359
720 1 $a Huber, David H. $e degree supervisor.
773 0 $t Masters Abstracts International $g 87-05.
790 $a 2622
791 $a M.S.
792 $a 2025
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=32280603