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Dissertations / Theses on the topic 'Carbon sinks'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Washbourne, Carla-Leanne. "Engineering soils to act as carbon sinks." Thesis, University of Newcastle upon Tyne, 2014. http://hdl.handle.net/10443/2487.

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Soils containing calcium (Ca) and magnesium (Mg) bearing waste silicate minerals may be intentionally engineered to capture and store atmospheric carbon (C). Within the soil environment these minerals can capture and store atmospheric C through the process of weathering that releases Ca and Mg which then precipitate as carbonate minerals. Like natural silicates, silicate ‘wastes’ and artificial silicates sequester C through carbonation of calcium (Ca2+) and magnesium (Mg2+). Terrestrial CO2 sequestration may be promoted by the inclusion of these reactive mineral substrates in soils, and many w

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2

Mayorga, Emilio. "Isotopic constraints on sources and cycling of riverine dissolved inorganic carbon in the Amazon Basin /." Thesis, Connect to this title online; UW restricted, 2004. http://hdl.handle.net/1773/10977.

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3

Gudasz, Cristian. "Boreal Lake Sediments as Sources and Sinks of Carbon." Doctoral thesis, Uppsala universitet, Limnologi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-150709.

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Inland waters process large amounts of organic carbon, contributing to CO2 and CH4 emissions, as well as storing organic carbon (OC) over geological timescales. Recently, it has been shown that the magnitude of these processes is of global significance. It is therefore important to understand what regulates OC cycling in inland waters and how is that affected by climate change. This thesis investigates the constraints on microbial processing of sediment OC, as a key factor of the carbon cycling in boreal lakes. Sediment bacterial metabolism was primarily controlled by temperature but also regu

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4

Ridgwell, Andy J. "Glacial-interglacial perturbations in the global carbon cycle." Thesis, University of East Anglia, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.365134.

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5

Nagarathnam, Premkumar. "Novel carbon nanotube thermal interfaces for microelectronics." Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/31720.

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Thesis (M. S.)--Mechanical Engineering, Georgia Institute of Technology, 2010.<br>Committee Chair: Graham, Sam; Committee Member: Joshi, Yogendra; Committee Member: Kalaitzidou, Kyriaki. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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6

Koprivnjak, Jean-François. "Sources, sinks, and fluxes of dissolved organic carbon in subarctic fen catchments." Thesis, McGill University, 1991. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=60045.

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The sources, sinks, fluxes, spatial distributions, and temporal variations of dissolved organic carbon (DOC) in subarctic fen catchments as well as the temporal patterns of DOC in streams draining subarctic fen catchments in the region of Schefferville, Quebec were investigated.<br>In June to August sampling, DOC concentrations averaged 17 mg/L in peat water, 2-16 m/L in stream water, 49-56 mg/L in canopy throughfall, 14-19 mg/L in understory throughfall, 122-187 mg/L in stemflow, 25-39 mg/L in lichen and moss mat water, and 35-42 mg/L in soil A horizon water.<br>Precipitation and canopy and u

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7

Sonnerup, Rolf Erik. "Reconstructing the oceanic ¹³Seuss effect /." Thesis, Connect to this title online; UW restricted, 1999. http://hdl.handle.net/1773/11026.

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8

Ahmad, Ismariah. "Economics of carbon emission and sequestration in the Malaysian forest sector /." Thesis, Connect to this title online; UW restricted, 2001. http://hdl.handle.net/1773/5588.

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9

Richmond, Nicole L. "THE CARBON BUDGET OF A SHALLOW, TROPICAL AQUIFER: SOURCES, SINKS, AND PROCESSES." Oxford, Ohio : Miami University, 2003. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=miami1070212062.

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Thesis (M.S.)--Miami University, Dept. of Geology, 2003.<br>Title from first page of PDF document. Document formatted into pages; contains vii, 127 p. : ill. Includes bibliographical references (p. 108-113).

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10

Fuss, Sabine, Wolf Heinrich Reuter, Jana Szolgayova, and Michael Obersteiner. "Optimal mitigation strategies with negative emission technologies and carbon sinks under uncertainty." Springer Netherlands, 2013. http://dx.doi.org/10.1007/s10584-012-0676-1.

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In recent years a body of literature has arisen on the topic of how to compose the optimal portfolio of mitigation options. The focus has been mainly on options involving shifts from high- to low- or even negative-carbon technologies. Natural sinks play an important role in any attempt to stabilize atmospheric CO2 and usually enter as a constant term in the overall carbon budget. In this paper, we introduce natural sinks to the carbon management problem and analyze the implications for negative emission technology deployment and the overall mitigation strategy. Amongst other sensitivity analys

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11

Potouroglou, Maria. "Assessing the role of intertidal seagrasses as coastal carbon sinks in Scotland." Thesis, Edinburgh Napier University, 2017. http://researchrepository.napier.ac.uk/Output/975386.

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Seagrasses are marine foundation species that form ecologically important habitats in coastal areas around the world. They provide a range of ecosystem services, including coastal protection and the recently recognised large contribution to global carbon sequestration and storage. To date, the majority of published studies on the aforementioned ecosystem services is limited to specific geographic regions and seagrass species. This PhD study attempted to explore and provide the first evidence, to the best of our knowledge, on the role of Scottishseagrasses as carbon sinks and sediment stabilise

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12

Dymond, Caren. "Disturbance and climate change risks to forest carbon sinks and potential management responses." Thesis, Bangor University, 2018. https://research.bangor.ac.uk/portal/en/theses/disturbance-and-climate-change-risks-to-forest-carbon-sinks-and-potential-management-responses(416a28ec-8724-43f6-a415-513772dd7dc2).html.

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Climate change is a global crisis facing forest management. There are risks to many ecological goods and services from forests due to changes in productivity, mortality, pathogen, and wildfire dynamics. Likewise, there are opportunities such as increases in productivity or targeted funding for climate adaptation and emission reductions. To manage those risks and opportunities, we need the fundamental knowledge of forest carbon (C) cycles. Overall, my dissertation aims to improve our understanding of forest carbon dynamics and how they may respond to natural disturbances, climate change and man

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13

Yager, Patricia L. "The microbial fate of carbon in high-latitude seas : impact of the microbial loop on oceanic uptake of CO2 /." Thesis, Connect to this title online; UW restricted, 1996. http://hdl.handle.net/1773/11001.

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14

Salinas, Zapata Cristian C. "Seagrass soils as paleoenvironmental tools and biogeochemical sinks for management." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2022. https://ro.ecu.edu.au/theses/2542.

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Coastal vegetation plays an essential role in regulating climate change and water quality, especially seagrass meadows that cover up to 1.6 million km2 worldwide and have been identified as globally significant filters and sinks of biogeochemical elements, including organic carbon (Corg) and nitrogen (N). Over the past century, the accelerating intensity and duration of natural and anthropogenic disturbances have caused severe regime shifts in estuarine and other coastal ecosystem dynamics, causing seagrass losses and affecting their valuable ecosystem services. Although knowledge of long-term

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15

Zeng, Sibo [Verfasser]. "The evolution of carbonate weathering carbon sinks under climatic and anthropogenic perturbations / Sibo Zeng." Berlin : Freie Universität Berlin, 2021. http://d-nb.info/1238595804/34.

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16

Dawson, Julian J. C. "The controls on concentrations and fluxes of gaseous, dissolved and particulate carbon in upland peat dominated catchments." Thesis, University of Aberdeen, 2000. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU125517.

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A programme of field sampling was undertaken to quantify total carbon fluxes (DOC, POC, HCO3, free CO2 and CH4) from peatland catchments in Glen Dye, NE Scotland and Plynlimon, Mid-Wales. This was integrated with temporal and spatial sampling to investigate controls on contrasting concentrations and fluxes and to determine carbon sources or sinks within the stream system. Microcosms containing radiolabelled ( 14C) biofilms were also used to investigate removal of DOC from streamwater. Carbon fluxes from acidic peatlands were dominated by DOC (115-215 kg C ha-1 yr-1) and POC (8.15-97.0 kg ha -1

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17

George, Hugo. "Diving into Blue Carbon : A Review on Carbon Sequestration by Mangrove Forests, Seagrass Meadows and Salt Marshes, and Their Capacity to Act as Global Carbon Sinks." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-384028.

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During the last decade, the academic interest for Earth’s natural carbon sinks and their role concerning climate change has increased. Today, many scientists around the world are trying to calculate different ecosystem’s potential to sequester and store carbon dioxide from the atmosphere. As a newcomer to the scientific arena, the term ‘blue carbon’ has been well received by scientists in the field. ‘Blue carbon’ highlights the carbon captured and stored by productive ecosystems along the world’s coasts. The term refers to coastal wetlands – such as mangrove forests, salt marshes and seagrass

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18

Stephen, Amy Louise. "Carbon sources and sinks within the Oman-UAE ophiolite : implications for natural atmospheric CO2 sequestration rates." Thesis, University of Leicester, 2015. http://hdl.handle.net/2381/37249.

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Hyperalkaline (pH >11) spring waters across the Oman-UAE ophiolite have precipitated large-scale surface and subsurface freshwater carbonate deposits within and on mantle-sequence peridotites. Ten carbonate lithofacies have been identified that display a common stratigraphy across the region, with some on-going deposition. Alternating wet and arid climate periods, consistent with previous Quaternary climate data for Oman and the UAE, can be inferred from the morphologies and stratigraphy of carbonate lithofacies. Carbon and oxygen stable isotope ratios for individual lithofacies are consistent

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19

Pepper, David A. "Investigation of the long term physiological response of Huon pine (Lagarostrobos franklinii) to changes in atmospheric CO2 and climate using stable isotopes." Connect to full text, 1999. http://ses.library.usyd.edu.au/handle/2123/4032.

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Thesis (Ph. D.)--University of Sydney, 2000.<br>Title from title screen (viewed February 12, 2009). Submitted in fulfilment of the requirements for the degree of Doctor of Philosophy to the School of Biological Sciences, Faculty of Science. Degree awarded 2000; thesis submitted 1999. The 2 in the title is in subscript. Includes bibliographical references. Also available in print form.

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20

Bagga, Rajinder S. "Biological sequestration of carbon dioxide." Ohio : Ohio University, 2000. http://www.ohiolink.edu/etd/view.cgi?ohiou1171386594.

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Pepper, David A. "Investigation of the long term physiological response of Huon pine (Lagarostrobos franklinii) to changes in atmospheric CO2 and climate using stable isotopes." Phd thesis, School of Biological Sciences, 1999. http://hdl.handle.net/2123/4032.

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Thesis (Ph. D.)--University of Sydney, 2000.<br>Title from title screen (viewed February 12, 2009). Submitted in fulfilment of the requirements for the degree of Doctor of Philosophy to the School of Biological Sciences, Faculty of Science. Degree awarded 2000; thesis submitted 1999. The 2 in the title is in subscript. Includes bibliographical references. Also available in print form.

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22

Dietz, Carter Reynolds. "Single-phase forced convection in a microchannel with carbon nanotubes for electronic cooling applications." Thesis, Available online, Georgia Institute of Technology, 2007, 2007. http://etd.gatech.edu/theses/available/etd-07052007-155623/.

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Thesis (M. S.)--Mechanical Engineering, Georgia Institute of Technology, 2008.<br>Dr. David Gerlach, Committee Member ; Dr. Samuel Graham, Committee Member ; Dr. Minami Yoda, Committee Member ; Dr. Yogendra Joshi, Committee Chair.

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23

Rindy, Jenna. "Urban Trees as Sinks for Soot: Deposition of Atmospheric Elemental Carbon to Oak Canopies and Litterfall Flux to Soil." Thesis, University of North Texas, 2018. https://digital.library.unt.edu/ark:/67531/metadc1157527/.

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Elemental carbon (EC), a product of incomplete combustion of fossil fuels and biomass, contributes to climate warming and poor air quality. In urban areas, diesel fuel trucks are the main source of EC emissions from mobile sources. After emission, EC is deposited to receptor surfaces via two main pathways: precipitation (wet deposition) and directly as particles (dry deposition). Urban trees may play an important role in removing EC from the atmosphere by intercepting and delivering it directly to the soil. The goal of this research was to quantify the magnitude of EC retention in leaf waxes (

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24

Macauley, Nadine. "Impact of Carbon Sinks on Urban Heat Island Effects : Assessment Using Satellite Data in Water Scarce Region of the Thesis." Thesis, Högskolan i Gävle, Avdelningen för byggnadsteknik, energisystem och miljövetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-33414.

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Urbanization modifies the thermal characteristics of the land and makes way for a succession of transformations in the urban environmental system. This phenomenon, known as Urban Heat Island (UHI), is characterized by elevated temperatures in urban areas that negatively impact on the quality of life and environment in urban areas including, increased emissions of Green House Gases (GHGs) and rising energy consumption. These impacts add to global climate change and thus, mitigating UHI is essential to mitigating global climate change. One GHG, Carbon Dioxide (CO2), accounts for about half of th

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Gathany, Mark A. "Sources of variation in ecosystem carbon pools : a comparison of adjacent old- and second-growth forests /." Ohio University / OhioLINK, 2004. http://www.ohiolink.edu/etd/view.cgi?ohiou1102537971.

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26

Pumilio, John F. "Carbon neutrality by 2020 The Evergreen State College's comprehensive greenhouse gas inventory /." Online pdf file accessible through the World Wide Web, 2007. http://archives.evergreen.edu/masterstheses/Accession86-10MES/Pumilio_J%20MESThesis%202007%20.pdf.

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27

Karlsson, Emma. "Compositional clues to sources and sinks of terrestrial organic matter transported to the Eurasian Arctic shelf." Doctoral thesis, Stockholms universitet, Institutionen för miljövetenskap och analytisk kemi, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-116876.

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The amount of organic carbon (OC) present in Siberian Arctic permafrost soils is estimated at twice the amount of carbon currently in the atmosphere. The shelf seas of the Arctic Ocean receive large amounts of this terrestrial OC from Eurasian Arctic rivers and from coastal erosion. Degradation of this land-derived material in the sea would result in the production of dissolved carbon dioxide and may then add to the atmospheric carbon dioxide reservoir. Observations from the Siberian Arctic suggest that transfer of carbon from land to the marine environment is accelerating. However, it is not

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28

Kennerstedt, Marcus, and de Moraes Felicia Pereira. "Implementering av koldioxidvärdering för grönytor." Thesis, KTH, Urbana och regionala studier, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-252796.

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IPCC förespråkar i en rapport från 2018 att kolsänkor måste få en tydligare plats i samhället om vi ska lyckas nå klimatmålen. Grönstruktur är en typ av objekt som passivt tar upp koldioxid genom fotosyntes. Genom att nyttja detta i ett planeringsskede skapas ett verktyg som går att använda för att minska halten koldioxid i atmosfären. Däremot, så värderas ej de urbana grönytor som finns idag med avseende på detta, dock finns det många andra viktiga funktioner de uppfyller inom ramen för ekologisk hållbarhet. Detta examensarbete söker att besvara frågan hur det går att implementera kolsänkor v

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Ullbrand, Jennifer. "A comparison of SPS and HP sintered, electroless copper plated carbon nanofibre composites for heat sink applications." Thesis, Linköping University, Department of Physics, Chemistry and Biology, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-21106.

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<p>The aim of this study is to synthesize a material with high thermal conductivity and a low coefficient of thermal expansion (CTE), useful as a heat sink. Carbon nanofibres (CNF) are first coated with copper by an electroless plating technique and then sintered to a solid sample by either spark plasma sintering (SPS) or hot pressing (HP). The final product is a carbon nanofibre reinforced copper composite. Two different fibre structures are considered: platlet (PL) and herringbone (HB). The influence of the amount of CNF reinforcement (6-24 %wt), on the thermal conductivity and CTE is studie

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Archbold, Brad. "Using algae to capture CO₂ and as a feedstock for biofuel." Online pdf file accessible through the World Wide Web, 2007. http://archives.evergreen.edu/masterstheses/Accession86-10MES/Archbold_%20B%20MESThesis%202007.pdf.

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Silva, Cinthia Aparecida 1985. "Estoque e produção de raiz fina ao longo de um gradiente altitudinal de Floresta Atlântica na Serra do Mar, São Paulo, Brasil." [s.n.], 2015. http://repositorio.unicamp.br/jspui/handle/REPOSIP/314887.

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Orientador: Carlos Alfredo Joly<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Biologia<br>Made available in DSpace on 2018-08-27T11:49:29Z (GMT). No. of bitstreams: 1 Silva_CinthiaAparecida_M.pdf: 9588877 bytes, checksum: dbff1b6c72dbd211b47263ed9583a74c (MD5) Previous issue date: 2015<br>Resumo: As florestas tropicais estão entre os ecossistemas terrestres mais diversos e produtivos do planeta, embora ocorram sob solos pobres. Para superar essa condição as plantas adaptam a si mesmas para alocarem biomassa adicional a órgãos onde os recursos são limitantes. Alg

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Wang, Yuting [Verfasser], Mathias [Akademischer Betreuer] Palm, Justus [Gutachter] Notholt, and Annette [Gutachter] Ladstätter-WeißEnmayer. "Using solar FTIR spectrometry to investigate the sources and sinks of carbonyl sulfide and its application to the carbon cycle / Yuting Wang ; Gutachter: Justus Notholt, Annette Ladstätter-Weißenmayer ; Betreuer: Mathias Palm." Bremen : Staats- und Universitätsbibliothek Bremen, 2016. http://d-nb.info/1120555353/34.

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Mervine, Evelyn Martinique. "Determining timescales of natural carbonation of peridotite in the Samail Ophiolite, Sultanate of Oman." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/77785.

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Thesis (Ph. D.)--Joint Program in Marine Geology and Geophysics (Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences; and the Woods Hole Oceanographic Institution), 2012.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references.<br>Determining timescales of the formation and preservation of carbonate alteration products in mantle peridotite is important in order to better understand the role of this potentially important sink in the global carbon cycle and also to evaluate the feasibility of using artificially-enhanced, in situ form

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Rosner, Hillary. "Tropical rainforests: Carbon sink or carbon source?" Diss., Connect to online resource, 2006. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1439430.

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35

Girard, Léo. "Étangs piscicoles et services écosystémiques : Relations entre pratiques de gestion, maintien de la biodiversité et stockage de carbone." Electronic Thesis or Diss., Paris, AgroParisTech, 2024. http://www.theses.fr/2024AGPT0008.

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L'Europe renferme de nombreux paysages d'étangs, pour beaucoup avec une origine pouvant remonter au Moyen-âge et une vocation historique de production piscicole. Ces milieux, malgré qu'ils soient anthropisés, sont connus pour leur capacité à présenter une biodiversité importante, avec des espèces rares, voir endémiques ou menacées. Avec l'abandon de la pisciculture, combiné à d'autres menaces comme le changement climatique, un nombre significatif de ces étangs ont disparus au cours des dernières décennies. Jusqu'à récemment, et ce malgré le rôle important qu'ils peuvent jouer, ces petits plans

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Broman, Nils. "Värdeskapande av koldioxid frånbiogasproduktion : En kartläggning över lämpliga CCU-tekniker för implementeringpå biogasanläggningar i Sverige." Thesis, Linköpings universitet, Industriell miljöteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-171793.

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Carbon dioxide from biogas production is currently considered to be without value and isbecause of this released into the atmosphere in the biogas upgrading process. The residualgas is a potential carbon source and can create value in the biogas manufacturing process.By finding a suitable value-creating process that utilizes carbon dioxide, it can be possibleto provide both economic and environmental incentives for companies to develop theiroperations. This project explored the possibility to create value from this CO2. Through anevaluation of the technical maturity of CCU technologies, a reco

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Renforth, Phil. "Mineral carbonation in soils : engineering the soil carbon sink." Thesis, University of Newcastle Upon Tyne, 2011. http://hdl.handle.net/10443/1216.

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Rapid anthropogenic climate change is one of the greatest challenges that human civilisation will face in the 21st century. A 25-180 % increase in atmospheric carbon dioxide content since the early 1800’s and a predicted increase of 2-3% each year will lead to a 2-6°C rise in tropospheric temperatures. The consequences of increased atmospheric temperatures are profound and would put unsustainable strain on human infrastructure, which was conservatively estimated in the Stern Review (2006) to cost approximately 20% of GDP. Given the political, technical, economic and social barriers preventing

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Johannessen, Sophia. "A photochemical sink for dissolved organic carbon in the ocean." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ57364.pdf.

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Landschutzer, Peter. "Variability of the global ocean carbon sink (1998 through 2011)." Thesis, University of East Anglia, 2014. https://ueaeprints.uea.ac.uk/48677/.

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In this thesis a newly developed 2–step neural network approach is used to reconstruct basin–wide monthly maps of the sea surface partial pressure of CO₂ (pCO₂) at a resolution of 1°X1° for both the Atlantic Ocean from 1998 through 2007 and the global ocean from 1998 through 2011. From those, air–sea CO₂ flux maps are computed using a standard gas exchange parameterization and high–resolution wind speeds. Observations form the basis of the studies conducted in this thesis. The neural network estimates benefit from a continuous improvement of the observations, i.e., the Surface Ocean CO₂ Atlas

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Fernández-Martínez, M., S. Vicca, I. A. Janssens, et al. "Atmospheric deposition, CO2, and change in the land carbon sink." NATURE PUBLISHING GROUP, 2017. http://hdl.handle.net/10150/625758.

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Concentrations of atmospheric carbon dioxide (CO2) have continued to increase whereas atmospheric deposition of sulphur and nitrogen has declined in Europe and the USA during recent decades. Using time series of flux observations from 23 forests distributed throughout Europe and the USA, and generalised mixed models, we found that forest-level net ecosystem production and gross primary production have increased by 1% annually from 1995 to 2011. Statistical models indicated that increasing atmospheric CO2 was the most important factor driving the increasing strength of carbon sinks in these for

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Gedye, Sharon Jane. "Mass balance in recent peats." Thesis, University of Liverpool, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.266139.

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Bairam, Emna. "Etude des processus écophysiologiques caractérisant la distribution du carbone entre les sources et les puits au sein de la charpentière du pommier. Eléments pour un modèle fonction-structure." Thesis, Rennes, Agrocampus Ouest, 2017. http://www.theses.fr/2017NSARC129/document.

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La synthèse et le transport du carbone chez le pommier repose sur un ensemble de mécanismes complexes et imbriqués dépendants de facteurs endogènes et exogènes. Uneapproche combinant une caractérisation écophysiologique et l’utilisation d’un modèle structure-fonction de la plante (Functional-Structural Plant Model, FSPM) présente un moyenintéressant pour ce champ de recherche dans la mesure où un modèle structure-fonction permet d’intégrer la topologie et la géométrie de la plante et de ses différents organes à l’ensemble des facteurs impliqués dans l’assimilation et le transport du carbone et

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Nye, Adrienne Juliana. "Hyper-lignified root systems as a carbon sink in Arabidopsis thaliana." Thesis, University of British Columbia, 2009. http://hdl.handle.net/2429/13909.

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Lignified plant cell walls represent an immense carbon sink to offset rising atmospheric carbon dioxide (CO₂) due to the chemical stability and structural diversity of the bonds formed between lignin subunits, making it the slowest decomposing component of dead vegetation. This thesis explores the feasibility of increasing lignin deposition in roots through overexpression of SND1 (Secondary Wall Associated NAC Domain Protein 1), a key transcriptional activator involved in regulating secondary wall biosynthesis in fibres, under the control of two different putative root-specific promoters, 4-co

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Cross, Andrew. "An investigation of carbon flows from forest soils, in relation to climatic warming." Thesis, University of Edinburgh, 2009. http://hdl.handle.net/1842/3805.

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Rises in anthropogenic CO2 emissions are now widely acknowledged to be responsible for changes in the global climate, with potentially disastrous consequences if these rises continue unchecked. Although knowledge of ecosystem responses to climate change has improved, there are still large underlying uncertainties regarding their response to warming. Of all the ecosystems with the potential to mitigate rises in CO2, forests are arguably the most important because of their huge land area and store of carbon. A large proportion of the carbon stored in forests is found in the soil, and it is the r

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Mendon?a, J?nior Jurandir Rodrigues de. "Os reservat?rios eutrofizados da regi?o tropical semi?rida atuam como emissores ou como sequestradores de di?xido de carbono?" Universidade Federal do Rio Grande do Norte, 2014. http://repositorio.ufrn.br:8080/jspui/handle/123456789/16015.

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Made available in DSpace on 2014-12-17T15:03:34Z (GMT). No. of bitstreams: 1 JurandirRMJ_DISSERT.pdf: 1054152 bytes, checksum: 95f074a057b6d2e03d6f4a8700465d95 (MD5) Previous issue date: 2014-03-31<br>Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior<br>The aquatic ecosystems can play a role as carbon-dioxide-source or carbon-dioxide-sink systems due to the high predominance of heterotrophic or autotrophic metabolism. The primary production can strongly affect the carbon balance (CO2) through the consumption of carbon dioxide in the photosynthesis, especially in eutrophic environme

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Rossi, Lorenzo Matteo Walter. "Embankment as a carbon sink : a study on carbon sequestration pathways and mechanisms in topsoil and exposed subsoil." Thesis, Montpellier, 2019. http://www.theses.fr/2019MONTG083.

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La séquestration du carbone (C) fait l'objet d'une attention scientifique et politique croissante dans le cadre de la réduction des gaz à effet de serre. Les sols géotechniques ont été négligés en raison de leur potentiel de séquestration du carbone, et l'attention étant concentrée sur les sols agricoles et naturels. Nous visons à évaluer le potentiel des talus géotechniques comme puits de carbone et, par l'étude des espèces végétales et des sols présentant des caractéristiques contrastées, à mettre en lumière les mécanismes de séquestration du carbone organique et les rôles des différents act

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ROSSI, Lorenzo Matteo Walter. "Embankment as a carbon sink: a study on carbon sequestration pathways and mechanisms in topsoil and exposed subsoil." Doctoral thesis, Università degli studi di Cassino, 2019. http://hdl.handle.net/11580/75251.

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Carbon (C) sequestration is receiving increasing scientific and political attention in a framework of greenhouse gasses mitigation. However, geotechnical soils have been neglected for their C sequestration potential, with the global attention focusing on agricultural and natural soils. In the present thesis project, we aim to assess the potential of geotechnical embankments as C sink, and, through the study of plant species and soils showing contrasting features, shed light on C sequestration mechanisms and the role of the different actors involved. We aim not only to quantify the C gained and

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Lebehot, Alice. "A variable North Atlantic sink for anthropogenic CO2 : modelling observed change." Thesis, University of Exeter, 2018. http://hdl.handle.net/10871/32759.

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To determine the maximum carbon dioxide (CO2) emissions consistent with a given global warming threshold, the scientific community must robustly quantify what proportion of human emitted CO2 will be taken up by the terrestrial and marine carbon reservoirs. The North Atlantic Ocean is a region of intense uptake of atmospheric CO2. To assess how the North Atlantic CO2 sink has evolved over the past decades and understand the mechanisms involved in that uptake, observations and models are used. To appreciate the strengths and limitations of observation-based and modelled products, I explore the s

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Lazarova, Sofiya. "Investigating the role of sucrose phosphate synthase and hexokinase in carbon sink strength." Thesis, University of British Columbia, 2015. http://hdl.handle.net/2429/55000.

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The production, transport and assimilation of organic carbon ultimately drive the growth of plants. In this work, two enzymes, Sucrose Phosphate Synthase (SPS) and Hexokinase (HXK), prominent in their role of carbon production in the form of sucrose at the source, have been examined for their role at the sink, where carbon is assimilated. It has been postulated that the presence of sucrose-forming enzymes in the sink serves a function to reform sucrose from apoplastic cleavage or partake in a “futile” cycle of sucrose cleavage and such that small changes in metabolite enable large changes in s

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Cavan, Emma. "Sink or swim : the fate of particulate organic carbon in the interior ocean." Thesis, University of Southampton, 2016. https://eprints.soton.ac.uk/401166/.

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Without small oceanic organisms atmospheric CO2 levels would be about 200 ppm higher than they are today; phytoplankton convert dissolved inorganic carbon (DIC) to particulate organic carbon (POC) during photosynthesis, influencing the air-sea exchange of CO2. Eventually some of this POC is exported out of the upper ocean, often as either phytodetrital aggregates or zooplankton faecal pellets. Because of the complexity of this biological carbon pump (BCP), the fate of the exported POC in the mesopelagic zone is difficult to predict. To make things more complex all of these processes vary tempo

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