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Dissertations / Theses on the topic 'Nitrogen budgets'

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Published: 15 March 2023

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1

Watson, Christine A. "Nitrogen budgets in pluricompartmental systems." Thesis, University of Aberdeen, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.296512.

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Increasing concern over the adverse environmental impact of intensive agriculture has led to pressure to develop more sustainable, integrated farming systems which have the potential to minimise the loss of nitrogen to the environment whilst maintaining productivity. Alternative systems include pluricompartmental systems, which combine more than one enterprise or species in a formalised design, such as a crop rotation or spatial arrangement e.g. agroforestry. Three approaches to nitrogen budgeting were developed and their ability to quantitatively describe nitrogen cycling in pluricompartmenta

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2

Eriksson, Hägg Hanna. "Nitrogen land-sea fluxes in the Baltic Sea catchment : Empirical relationships and budgets." Doctoral thesis, Stockholms universitet, Institutionen för tillämpad miljövetenskap (ITM), 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-32493.

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In this thesis empirical relationships and modeling tools are used to describe the relationship between human activities and meso- and large scale riverine N fluxes from land to sea. On a large scale Paper I showed that by only having knowledge about human population size and runoff one can estimate the riverine export of DIN (r2= 0.76). In Paper II we included two other important anthropogenic N inputs, i.e. atmospheric deposition and primary emission (PE) from animals. In most of the catchments the PE from animals were larger than the PE from humans. Hence, development of livestock is import

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3

Halpop, John W. "Nitrogen and Energy Budgets of Production Ewes on Summer Range in Southwestern Utah." DigitalCommons@USU, 1988. https://digitalcommons.usu.edu/etd/4086.

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Nitrogen (N) and energy budgets for free-roaming ewes were quantified on mountain summer range in southwestern Utah in 1986 and 1987. Diet quality (%N), in vitro organic matter digestibility (IVOMD), and energy were estimated with the use of five esophageally fistulated ewes. Excretion rates of N and energy to feces and urine were measured by total collection from five nonfistualted ewes. Total intake N(gN/(MBW*d-1) tracked intraseasonal changes of dietary N percent but was apparently buffered by fluctuations in dry matter intake. In each year, total urine N was closely related to dietary N co

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4

James, Andrew Gordon. "The feeding ecology of and carbon and nitrogen budgets for Engraulis capensis in the southern Benguela ecosystem." Doctoral thesis, University of Cape Town, 1988. http://hdl.handle.net/11427/8409.

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Bibliography: leaves 179-231.<br>The two main schools of thought regarding the diets of intermediate microphagous clupeids are: A) that they are herbivorous and B) that they are omnivorous, but consume mainly zooplankton. The former view has been employed to explain their abundance in upwelling areas, since their purported ability to efficiently utilise the primary producers shortens the pelagic food chain to 1 or 2 links. The literature concerning the trophic ecology of some commercially important clupeids is reviewed and it is concluded that few are true phytophagists. Most are omnivorous an

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5

van, der Lingen Carl David. "The Feeding ecology of, and carbon and nitrogen budgets for, sardine sardinops sagax in the Southern Benguela upwelling ecosystem." Doctoral thesis, University of Cape Town, 1999. http://hdl.handle.net/11427/17510.

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Bibliography : pages 178-202.<br>Combined laboratory and field studies were employed to examine the feeding ecology of sardine Sardinops sagax in order to evaluate conflicting hypotheses regarding the trophic position of clupeoids in upwelling ecosystems, and to compare the trophodynamics of sardine with those of the co-occurring anchovy Engraulis capensis. Carbon and nitrogen budget models constructed using data from these studies were used to quantify the effect of particular food environments upon sardine growth. Sardinops sagax is primarily a filter-feeder, with food particles <1230μm tota

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6

Randall, Benjamin. "Characterisation and quantification of the fluxes of particulate and dissolved nitrogen in the unicellular diazotroph crocosphaera watsonii : towards a closed nitrogen budget." Electronic Thesis or Diss., Sorbonne université, 2019. http://www.theses.fr/2019SORUS685.

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Les flux importants de la phase N dissoute, qui renseignent sur les bilans globaux en N des diazotrophes individuels, sont mal compris. Cela est particulièrement vrai des diazotrophes récemment découverts, qui peuvent ne pas fonctionner selon des paradigmes préétablis. Crocosphaera watsonii est un de ces diazotrophes, que l'on trouve largement répandu dans les océans subtropicaux. Nous caractérisons ici les flux d'azote à la diazotrophie de Crocosphaera, y compris les flux de NO3-, NH4 + et de N organique dissous (DON). Nous visons également à utiliser nos résultats pour évaluer la précision d

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7

Bristow, Corben Emerson. "Experimental freshwater cage aquaculture: Short term effects on carbon, nitrogen and phosphorus budgets and the metabolism of a boreal shield lake." Thesis, University of Ottawa (Canada), 2006. http://hdl.handle.net/10393/27114.

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We conducted an experiment to determine the effects of cage aquaculture on the functional properties of a lake. We installed a commercial aquaculture operation into a lake located within a pristine headwater region of the boreal shield. We used a before-after control-impact design to evaluate the weight of evidence for causal effects. We quantified sinks, sources and exchanges of carbon, nitrogen and phosphorus to the lake and presented this information in a budget format. We then calculated retention rates for these chemicals and compared them to integral amounts of carbon, nitrogen and phosp

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8

Michori, Peter K. "Nitrogen budget under coffee." Thesis, University of Reading, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.333405.

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9

Lernbecher, Vincent. "Swedish Nitrogen Flows : A national budget of anthropogenically induced reactive nitrogen." Thesis, KTH, Hållbar utveckling, miljövetenskap och teknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-289176.

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Nitrogen is a fundamental element in all forms of life and a crucial component of our agricultural productivity and global food security. However, excess nitrogen caused by human activity poses a serious threat to the environment and human health. Understanding human influences on the nitrogen cycle are therefore essential for sustainable management of the nutrient. The flows of anthropogenically influenced and created reactive nitrogen in Sweden are examined in this study. Human-induced sources and mechanisms associated with nitrogen are quantified and illustrated in several charts constructe

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10

Batson, Jacqulyn A. "Denitrification and a Nitrogen Budget of Created Riparian Wetlands." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1284968767.

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11

Lee, Kun-seop. "Nitrogen budget of the seagrass Thalassia testudinum in the western Gulf of Mexico /." Digital version accessible at:, 1998. http://wwwlib.umi.com/cr/utexas/main.

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12

Mckenzie, Rebecca. "Fluxes of nitrogen in a semi-natural ecosystem." Thesis, University of Manchester, 2013. https://www.research.manchester.ac.uk/portal/en/theses/fluxes-of-nitrogen-in-a-seminatural-ecosystem(14fa4deb-56e1-4cf4-b5bf-2afb74081cc8).html.

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Nitrogen (N) is known to be a limiting factor in peatlands and as such, the vegetation present has adapted to living in low N conditions. This makes such ecosystems particularly vulnerable to increases in the deposition of reactive N (Nr), which may result in significant changes to its biodiversity and biogeochemistry. Since the industrial revolution, the amount of anthropogenic Nr globally has increased from ~15 Tg N y-1 in the 1860’s to ~187 Tg N y-1 in 2005, and is estimated to reach ~267 Tg N yr-1 by 2050 (Galloway et al. 2004, Galloway et al. 2008). Consequences include acidification, los

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13

Kathawaroo, Deshika. "A nitrogen budget for the Cape Metropolitan area : is nitrogen enrichment occurring in the soils of remnant patches of lowland fynbos?" Bachelor's thesis, University of Cape Town, 2000. http://hdl.handle.net/11427/25968.

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Anthropogenic activities create nitrogenous pollutants which threaten the existence of lowland fynbos, comprising 92 Red Data Book species and 14 Cape Flats endemics. A regional Nitrogen budget was constructed through the collation of existing data for the Cape Metropolitan Area. An NOx inventory has revealed that vehicles emit 66 % of the total NOx emissions into the atmosphere. The maximum potential N deposition is 184 kg N ha⁻¹ yr⁻¹ for the lowlands. Air quality in an industrial area, Goodwood, has revealed that a large proportion of the emissions remain in the air and have the potential to

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14

Trimmer, Mark. "The role of bottom sediments in the nitrogen budget of the Great Ouse estuary." Thesis, University of Essex, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.361018.

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15

Sandu, Simonel Ioan. "Evaluation of ozone treatment, pilot-scale wastewater treatment plant, and nitrogen budget for Blue Ridge Aquaculture." Diss., Virginia Tech, 2003. http://hdl.handle.net/10919/11271.

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Sustainable tilapia production at Blue Ridge Aquaculture (BRA) is constrained by availability of high quality replacement water. I developed a pilot-scale wastewater treatment system to treat and reuse effluent presently discharged. An initial study was conducted to determine the response of the BRA waste stream to ozone application. Dosages of 6.9, 4.8 and 2.4 g O3 were applied for 30 minutes to 35 L of settled effluent. Optimum ozone dosage and reaction time, ozone transfer efficiency, ozone yield coefficient, degree of pollutant removal, and other ozone and water quality parameters were de

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16

Vogt, Esther. "Nitrogen fluxes at the landscape scale : a case study in Scotland." Thesis, University of Edinburgh, 2012. http://hdl.handle.net/1842/6244.

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Nitrogen (N) fluxes show a substantial variability at the landscape scale. Emissions are transferred by atmospheric, hydrological and anthropogenic dispersion between different landscape elements or ecosystems, e.g. farms, fields, forests or moorland. These landscape N fluxes can cause impacts to the environment, such as loss of biodiversity. The aim of this study is to illustrate how landscape N fluxes can be quantified by integrating atmospheric and fluvial fluxes in a Scottish landscape of 6 km x 6 km that contains intensively managed poultry farming, extensively managed beef and sheep farm

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17

Rutz, Charlotte. "The energy budget of green apple aphids (Aphis pomi de Geer) (Homoptera: Aphididae), as influenced by nitrogen fertilization /." [S.l.] : [s.n.], 1993. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=10176.

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18

Pandeya, Hemant Raj. "Carbon and nitrogen flux dynamics in highly weathered tropical mango soils: Effect of leaf litter and nitrogen fertiliser." Thesis, Queensland University of Technology, 2022. https://eprints.qut.edu.au/232828/1/Hemant%20Raj_Pandeya_Thesis.pdf.

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This thesis is a comparative study of carbon and nitrogen flux dynamics following sole and combined application of mango leaf litter mulch and inorganic fertiliser in highly weathered tropical mango orchard soils. In doing so, the thesis investigated litter decomposition dynamics and litter carbon mass balance and provided baseline datasets of seasonal and annual reactive nitrogen losses (through hydrological and gaseous pathways) under the tropical environmental conditions of Northern Territory Australia.

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19

Pasakdee, Sajeemas. "Nitrogen and water management in organic vegetable production in California : implications for soil properties, plant nutrient, and farm budget analysis /." Diss., Digital Dissertations Database. Restricted to UC campuses, 2006. http://uclibs.org/PID/11984.

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20

Pardon, Lénaïc. "Modelling of the nitrogen budget of oil palm plantations to help reduce losses to the environment. Case study in Sumatra, Indonesia." Thesis, Paris, Institut agronomique, vétérinaire et forestier de France, 2017. https://researchonline.jcu.edu.au/52952/1/52952-pardon-2017-thesis.pdf.

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Humanity faces the challenges of urgently decreasing the environmental impact of agriculture, shifting diets and increasing food production. Oil palm is a tropical perennial crop emblematic of these challenges. While its cultivation can be associated with environmental impacts, oil palm can produce 3 to 7 t of edible oil ha⁻¹ in optimal conditions, which is 7 to 10 fold higher than in annual oil crops. In this context, improving palm oil production sustainability is crucial for both reducing negative environmental impacts and ensuring food security. Application of synthetic nitrogen (N) fer

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21

Pardon, Lénaïc. "Modelling of the nitrogen budget of oil palm plantations to help reduce losses to the environment. Case study in Sumatra, Indonesia." Thesis, Paris, Institut agronomique, vétérinaire et forestier de France, 2017. http://www.theses.fr/2017IAVF0018/document.

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L’humanité fait face aux défis urgents de réduire l’impact environnemental de l’agriculture, de changer les régimes alimentaires et d’accroître la production alimentaire. Le palmier à huile est une plante pérenne tropicale emblématique de ces défis. Alors que sa culture peut être à l’origine d’impacts environnementaux, le palmier à huile peut produire, en conditions optimales, 7 à 10 fois plus d’huile alimentaire que les cultures oléagineuses annuelles. Dans ce contexte, améliorer la durabilité de la production d’huile de palme est crucial, tant pour réduire les impacts environnementaux négati

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22

Kettering, Janine Verfasser], and Yakov [Akademischer Betreuer] [Kuzyakov. "Budget and fluxes of nitrogen in mountainous agroecosystems in a summer monsoonal climate under intensive land use / Janine Kettering. Betreuer: Yakov Kuzyakov." Bayreuth : Universität Bayreuth, 2012. http://d-nb.info/1059412756/34.

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23

Bythell, J. C. "A nitrogen budget for the Caribbean elkhorn coral Acropora palmata (lamarck) from the back-reef environment of Tague Bay reef, St. Croix, U.S. Virgin Islands." Thesis, University of Newcastle Upon Tyne, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.383984.

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24

Wellington, Christine. "A nutrient mass balance for nitrogen and phosphorous for the nearshore water of the west coast of Barbados, W.I., July 1996 to May 1997 /." Thesis, McGill University, 1999. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=29931.

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A mass balance approach was used in an attempt to quantify nutrient flux to the nearshore at the West Coast, Barbados, W.I. Total nitrogen and total phosphorus levels of the groundwater at inland pumping stations and above beach margins, as well as in the water of the nearshore zone and approximately 2 km offshore, were obtained. Nearshore groundwater seepage rates and salinity data were also taken. This study attempted to use this raw data to estimate flushing rates, nutrient loading rates, and nutrient loss rates, to ultimately create a picture of the fate of nutrients as they travel in grou

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25

Borges, David AraÃjo. "UtilizaÃÃo de cepas de bactÃrias no cultivo intensivo de tilÃpia Oreochromis niloticus, sob sistema de renovaÃÃo zero Ãgua." Universidade Federal do CearÃ, 2006. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=7591.

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CoordenaÃÃo de AperfeiÃoamento de Pessoal de NÃvel Superior<br>O controle da qualidade da Ãgua em sistemas intensivo de cultivo de peixes Ã, via de regra, um dos pontos crÃticos para o sucesso do supracitado sistema. Os problemas mais comuns de qualidade de Ãgua nos sistemas em questÃo estÃo relacionados com depleÃÃo do oxigÃnio dissolvido, acÃmulo de matÃria orgÃnica e nitrogÃnio inorgÃnico, particularmente amÃnia. Bioremediadores ou bioincrementaÃÃo refere-se ao tratamento de poluentes ou detritos com o uso de microorganismos, como por exemplo, bactÃrias nitrificantes, as quais degradam as s

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26

Borges, David Araújo. "Utilização de cepas de bactérias no cultivo intensivo de tilápia Oreochromis niloticus, sob sistema de renovação zero água." reponame:Repositório Institucional da UFC, 2006. http://www.repositorio.ufc.br/handle/riufc/18252.

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BORGES, David Araújo. Utilização de cepas de bactérias no cultivo intensivo de tilápia Oreochromis niloticus, sob sistema de renovação zero água. 2006. 50 f. : Dissertação (mestrado) - Universidade Federalç do Ceará, Centro de Ciências Agrárias, Departamento de Engenharia de Pesca, Fortaleza-CE, 2006<br>Submitted by Nádja Goes (nmoraissoares@gmail.com) on 2016-07-12T13:03:29Z No. of bitstreams: 1 2006_dis_daborges.pdf: 228199 bytes, checksum: 33b54c2614fad5363ad43ae8d399c8d4 (MD5)<br>Approved for entry into archive by Nádja Goes (nmoraissoares@gmail.com) on 2016-07-12T13:04:07Z (GMT) No. of bi

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Brédoire, Félix. "Impacts of global change on the biogeochemical cycling of water and nutrients in the soil-plant system and consequences for vegetation growth in south-western Siberia." Thesis, Bordeaux, 2016. http://www.theses.fr/2016BORD0033/document.

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Dans un contexte de changement global, prédire l’évolution de la productivité de la végétation dans le sud-ouest (SO) Sibérien reste un défi du fait d’incertitudes fortes sur les processus régulant la disponibilité en eau et en nutriments. Nous avons mis en évidence des relations entre cycles biogéochimiques, climat et propriétés du sol sur six sites contrastés.La croissance radiale des tiges de peuplier est principalement sensible au bilan hydrique du sol en forêt de steppe, au sud du SO Sibérien, alors qu’elle est stimulée par de hautes températures estivales en sub-taïga, dans le nord de la

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28

Li, Po-Lin, and 李博霖. "Nitrogen Budgets and Nitrous Oxide Flux from Constructed Wetland." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/d562c5.

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碩士<br>嘉南藥理科技大學<br>環境工程與科學系暨研究所<br>99<br>This study monitored influent flow and effluent, water quality, nitrogen content of plant and sediment, and N2O flux in a constructed wetland system built in Chia Nan University of Pharmacy & Science from December 2007 to May 2010. Sampling frequency was once a month and twenty-seven data by actual gas sampling. The constructed wetland system in Chia Nan University of Pharmacy & Science which operated for tertiary treatment of campus wastewater was composed by subsurface flow (SSF) (1450 m2) and free water surface flow (FWS) wetland (2200 m2). The purpos

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29

Nimmo, Jeffrey. "Whole Farm Nutrient Budgets of Two Dairy Farms in Atlantic Canada." 2011. http://hdl.handle.net/10222/14330.

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Whole farm nutrient budgets (WFNB) enable producers to link dairy herd management with traditional field nutrient management plans. The objective of this study was to calculate WFNBs of nitrogen, phosphorus, and potassium (N, P, and K) at a commercial farm in New Brunswick and in Prince Edward Island. Reliable estimates of N fixation from alfalfa and red clover on the farms were obtained with adjustments to the Høgh-Jensen et al. (2004) dry matter conversion models. The farms had surpluses of N, P, and K. Both farms imported feed as well as nutrient inputs for crop production. Surpluses o

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30

"Molybdenum Biogeochemistry in an Evolutionary Context: Nitrogen Assimilation, Microbial Storage and Environmental Budgets." Doctoral diss., 2011. http://hdl.handle.net/2286/R.I.9049.

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abstract: Molybdenum (Mo) is a key trace nutrient for biological assimilation of nitrogen, either as nitrogen gas (N2) or nitrate (NO3-). Although Mo is the most abundant metal in seawater (105 nM), its concentration is low (<5 nM) in most freshwaters today, and it was scarce in the ocean before 600 million years ago. The use of Mo for nitrogen assimilation can be understood in terms of the changing Mo availability through time; for instance, the higher Mo content of eukaryotic vs. prokaryotic nitrate reductase may have stalled proliferation of eukaryotes in low-Mo Proterozoic oceans. Field an

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31

Ko, Francy, and 郭芳旭. "Biogeochemical Processes and Modeling Budgets of Carbon, Nitrogen and Phosphorus in the Chiku Lagoon." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/99471812245534257713.

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碩士<br>國立中山大學<br>海洋地質及化學研究所<br>88<br>This study focuses on the biogeochemical processes and budgets of nutrients and organic carbon in the Chiku Lagoon through periodic observations and data analyses. During the study, samples were collected bimonthly for measuring hydrochemistry (temp., salinity, pH and DO), nutrients (DIN, DIP and D-Si), carbon (DOC, POC) from the lagoon-associated water bodies. Results of temporal and spatial variations were used to model carbon fluxes and budgets in the Chiku Lagoon. Space and time variations of nutrients and other chemical inputs and distributions were

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32

Ferguson, Kirsten Sheena. "The atmospheric nitrogen budget over the South African Highveld." Thesis, 2010. http://hdl.handle.net/10539/7677.

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Molecular nitrogen is a highly abundant element in the atmosphere; it is stable and not very reactive. Anthropogenic activities have caused greater concentrations of nitrogen-containing compounds that are highly reactive and ultimately toxic. Reactive nitrogen concentrations have become a growing concern on the South African Highveld, with satellite images indicating very high nitrogen dioxide concentrations in the region. This study investigates the nitrogen budget on the Highveld through the analysis of the nitrogen species emitted into the atmosphere on a temporal scale as well as the atmos

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Brye, Kristofor Richard. "Carbon and nitrogen budget evaluation of natural and managed ecosystems." 1999. http://www.library.wisc.edu/databases/connect/dissertations.html.

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Liaw, Yeong-Tzonq, and 廖永綜. "Studies on the Nitrogen Budget and Cycle of Nanjenshan Forest Ecosystem." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/16879480283411611260.

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碩士<br>國立屏東科技大學<br>環境工程技術研究所<br>86<br>The objective of this project is to study the nitrogen budget and cycle of Nanjenshan forest ecosystem. At Kuhu experimental area, we explored soil properties, soil water contents, amounts and compositions of litterfall, mineralization of organic matter, dry and wet deposition and lake water quality. The results of soil property analysis showed that soils to be extremely acidic（pH4.3∼4.8）, fine-textured（clay and clay loam）, low in organic matter（1.0﹪∼5.34﹪）, total（0.06﹪∼0.17﹪）and available nitrogen, but high in "free" Fe and Al. Analyses

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(8775677), Megan N. Hughes. "Exploring the Effects of Cover Crop Use on Farm Profitability in Central Indiana." Thesis, 2020.

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Cover crop use provides a myriad of benefits to soil health. Despite strong agronomic evidence of the benefits of using cover crops, farmers have been slow to adopt cover crop systems. Surveys show that this is due to a lack of understanding on how cover crop use will impact the farm, and limited economic analysis on the effects of cover crop use on the farm. <div> In this thesis, a variable-rate nitrogen study was analyzed to determine the relationship between applied nitrogen fertilizer and corn yields, and how a cover crop treatment impacts that relationship. Da

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36

Johnson, Benjamin William. "Nitrogen in the Earth System: planetary budget and cycling during geologic history." Thesis, 2015. http://hdl.handle.net/1828/7755.

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The distribution and geologic history of nitrogen on Earth is poorly known. Traditionally thought to be an inert gas, with only a small but important biologic cycle, geochemical investigation highlights that it can also be present in rocks and minerals. Even at low concentrations, the great mass of the solid Earth allows for the possibility of substantial N mass and cycling in the geosphere over Earth history. Thus, the assumption that N on the surface of the Earth has remained in steady state over Earth history can be questioned. The research goals of this thesis are to investigate the Earth

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Li, Yi-Jen, and 李宜珍. "Top-down vs. bottom-up control on the nitrogen budget of coral reef mesocosms." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/79190385381932616453.

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碩士<br>中興大學<br>生命科學院碩士在職專班<br>99<br>The coral reef in Nanwan Bay undergoes the phase shift because of excessive nutrient loading and overfishing. Among them, nitrogen is an important element to affect the primary production. In order to establish the control model for coral degradation, we have investigated the nitrogen budget which states the nitrogen variation in temporal and space in this study. Almost 6% of system nitrogen was absorbed by the control producers of the coral reef mesocosm. The order of major nitrogen pools and their size rank are coral, phytoplankton and Dictyota cervicornis.

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Chao, Hsiang-Yi, and 趙湘怡. "Comparison of nitrogen budget models between organic duck-rearing paddy field and conventional paddy field." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/89620203149456768773.

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碩士<br>國立中興大學<br>生命科學院碩士在職專班<br>101<br>Owning to the rise of environmental consciousness and concerns about harmful effects of chemical compounds on the human body during agricultural processes around the whole world, the traditional rice-duck organic farming, the common agricultural methods in rural area between 1945 and 1971, becomes popular again in Taiwan. Different from conventional farming, the method of rice-duck organic farming uses ducks instead of pesticides and chemical fertilizers to feed pests and stamp paddy fields for suppressing weed and increasing the amount of dissolved oxygen

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Rouse, Sarah E. "Effects of vegetation type on the hydrologic budget and inorganic nitrogen in recently established rain gardens." 2007. http://catalog.hathitrust.org/api/volumes/oclc/151109710.html.

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Thesis (M.S.)--University of Wisconsin--Madison, 2007<br>Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 29-31).

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Hartmann, Linda. "Implementierung und bodenökologische Charakterisierung von Kurzumtriebsplantagen und Agroforstsystemen am Beispiel der Bioenergie-Regionen "Göttinger Land" & "Thüringer Ackerebene"." Doctoral thesis, 2014. http://hdl.handle.net/11858/00-1735-0000-0023-9962-F.

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Ojumu, Adefolake Mayokun. "Transport of nitrogen oxides and nitric acid pollutants over South Africa and air pollution in Cape Town." Diss., 2013. http://hdl.handle.net/10500/11911.

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The deteriorating air quality in Cape Town (CT) is a threat to the social and economic development of the city. Although previous studies have shown that most of the pollutants are emitted in the city, it is not clear how the transport of pollutants from neighbouring cities may contribute to the pollution. This thesis studies the transport of atmospheric nitrogen oxides (NOx) and nitric acid (HNO3) pollutants over South Africa and examines the role of pollutant transport from the Mpumalanga Highveld on pollution in CT. The study analysed observation data (2001 - 2008) from the CT air quality

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