AI SearchEffect of different electron acceptors and macrophyte plants of methane flux dynamics of a small artificial waterbody (Record no. 34281)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 04555nas a2200421 a 4500 |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20260818094924.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 251104s20259999th u ms t 000 eng d |
| 035 ## - SYSTEM CONTROL NUMBER | |
| System control number | .b12467194 |
| 099 #9 - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Classification number | AIT Thesis no.EV-25-04 |
| 100 1# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Gatela, Eleazar Jr. Quiero |
| 245 10 - TITLE STATEMENT | |
| Title | Effect of different electron acceptors and macrophyte plants of methane flux dynamics of a small artificial waterbody |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Place of publication, distribution, etc. | Pathum Thani, Thailand : |
| Name of publisher, distributor, etc. | Asian Institute of Technology, |
| Date of publication, distribution, etc. | 2025 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 118 leaves : |
| Other physical details | ill.+ |
| Accompanying material | 1 online resource |
| 490 1# - SERIES STATEMENT | |
| Series statement | Thesis ; |
| Volume/sequential designation | no. EV-25-04 |
| 500 ## - GENERAL NOTE | |
| General note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Environmental Engineering and Management |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | Thesis (M. Sc.) - Asian Institute of Technology, 2025 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | Small artificial waterbodies (SAWs), such as ponds, canals, and ditches, are widespread and increasingly recognized as significant contributors to methane (CH₄) emissions. Their high organic matter loading, susceptibility to eutrophication, and limited water flow create ideal conditions for methane production. Despite their ecological importance, the roles of key biotic and abiotic factors in methane flux dynamics remain poorly understood. This study investigated the influence of electron acceptors (oxygen, nitrate, nitrite, acetate, and sulfate) and macrophyte plants (free-floating fern and water lily) on methane flux in a small artificial canal. Methane fluxes were measured using static chambers over a 96-hour period under controlled conditions, including substrate amendments and the presence of macrophytes. Water quality parameters such as pH, dissolved oxygen (DO), temperature and nutrient concentrations (e.g., nitrate, nitrate, nitrite, sulfate, and total phosphorus) were monitored across all experiments to determine their correlation with methane flux. The study also evaluated the role of macrophytes, which may either enhance or reduce methane emissions through various mechanisms. By elucidating the relationships between biotic and abiotic factors influencing methane flux, this research provides critical insights into methane emissions from small artificial waterbodies. The study found that acetate significantly increased both methane (CH₄) and carbon dioxide (CO₂) emissions, while sulfate treatment moderately reduced CH₄ but unexpectedly lowered CO₂ levels, likely due to microbial inhibition by sulfide. In contrast, nitrate/nitrite amendments sustained longer activity by supporting denitrifying bacteria and anaerobic methane oxidation (DAMO/n-DAMO). Macrophyte treatments achieved the strongest CH₄ suppression, at times reducing emissions below detection, attributed to physical barriers, rhizospheric oxidation, and prolonged gas residence times. Oxygen, which is commonly deficient in SAWs, can effectively mitigate methane in the form of aeration. Water quality analysis revealed inverse relationships between CH₄ and dissolved oxygen/nitrate/nitrite, while sulfate negatively correlated with CO₂, highlighting the role of electron acceptor availability, redox conditions, and microbial processes in regulating greenhouse gas emissions from freshwater systems. These findings will contribute to improving greenhouse gas inventories and developing climate change mitigation strategies for urban and agricultural water management. |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Aquatic plants |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Green house gas |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Cruz, Simon Guerrero, |
| Relator term | Chairperson |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Shrestha, Sangam, |
| Relator term | Examination Committee |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Ghimire, Anish, |
| Relator term | Examination Committee |
| 710 2# - ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | PTT Global Chemical Public Company Limited, |
| Relator term | Scholarship Donor |
| 710 2# - ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Global Water & Sanitation Center (GWSC), |
| Relator term | Scholarship Donor |
| 710 2# - ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | AIT Scholarship, |
| Relator term | Scholarship Donor |
| 810 2# - SERIES ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Asian Institute of Technology. |
| Title of a work | Thesis ; |
| Volume/sequential designation | no. EV-25-04 |
| 856 40 - ELECTRONIC LOCATION AND ACCESS | |
| Materials specified | Full-Text |
| Uniform Resource Identifier | <a href="http://203.159.5.9/ait-thesis/detail.php?q=B22992">http://203.159.5.9/ait-thesis/detail.php?q=B22992</a> |
| 907 ## - LOCAL DATA ELEMENT G, LDG (RLIN) | |
| a | .b12467194 |
| b | mnait |
| c | a |
| 902 ## - LOCAL DATA ELEMENT B, LDB (RLIN) | |
| a | 251110 |
| 998 ## - LOCAL CONTROL INFORMATION (RLIN) | |
| Operator's initials, OID (RLIN) | 0 |
| Cataloger's initials, CIN (RLIN) | 251106 |
| First date, FD (RLIN) | m |
| -- | h |
| -- | a |
| -- | 0 |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnarc |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnarc |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 40-Archives |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 67-Electronic Resource |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050120423792 |
| CREATED | CREATED : 2025-04-11 |
| RECORD Id | RECORD # : i13560566 |
| LPATRON | LPATRON : 0 |
| LCHKIN | LCHKIN : - |
| RENEWALS | # RENEWALS : 0 |
| -- | # OVERDUE : 0 |
| -- | IUSE3 : 0 |
| -- | TOT CHKOUT : 0 |
| -- | TOT RENEW : 0 |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : - |
| CREATED | CREATED : 2025-04-11 |
| RECORD Id | RECORD # : i13560578 |
| LPATRON | LPATRON : 0 |
| LCHKIN | LCHKIN : - |
| RENEWALS | # RENEWALS : 0 |
| -- | # OVERDUE : 0 |
| -- | IUSE3 : 0 |
| -- | TOT CHKOUT : 0 |
| -- | TOT RENEW : 0 |
| Withdrawn status | Lost status | Damaged status | Not for loan | Home library | Current library | Shelving location | Date acquired | Total checkouts | Full call number | Barcode | Date last seen | Copy number | Price effective from | Koha item type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | Archives | 18/08/2026 | AIT Thesis no.EV-25-04 | 30050120423792 | 18/08/2026 | 1 | 18/08/2026 | 40-Archives | ||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | Archives | 18/08/2026 | AIT Thesis no.EV-25-04 | 18/08/2026 | 1 | 18/08/2026 | 67-Electronic Resource |