Tesis sobre el tema "Eutrophication"
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Miroshnichenko, Y. V. "Eutrophication". Thesis, Сумський державний університет, 2013. http://essuir.sumdu.edu.ua/handle/123456789/31125.
Texto completoPetriyako, N. V. "Eutrophication". Thesis, Sumy State University, 2014. http://essuir.sumdu.edu.ua/handle/123456789/45134.
Texto completoCairns, Stefan H. 1949. "Eutrophication Monitoring and Prediction". Thesis, University of North Texas, 1993. https://digital.library.unt.edu/ark:/67531/metadc277850/.
Texto completoMalmaeus, Jan Mikael. "Predictive Modeling of Lake Eutrophication". Doctoral thesis, Uppsala University, Department of Earth Sciences, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-4625.
Texto completoThis thesis presents predictive models for important variables concerning eutrophication effects in lakes. The keystone is a dynamic phosphorus model based on ordinary differential equations. By calculating mass fluxes of phosphorus into, within and out from a lake, the concentrations of different forms of phosphorus in different compartments of the lake are estimated.
The dynamic phosphorus model is critically tested and several improvements are presented, including two new compartments for colloidal phosphorus, a sub-model for suspended particulate matter (SPM) and new algorithms for lake outflow, water mixing, diffusion, water content and organic content of accumulation sediments are implemented. Predictions with the new version show good agreement against empirical data in five tested lakes.
The sub-model for SPM uses the same driving variables as the basic phosphorus model, so the inclusion of this model as a sub-model does not require any additional variables. The model for SPM may also be used as a separate model giving monthly predictions of suspended particulate matter in two water compartments and one compartment with SPM available for resuspension in ET-sediments.
Empirical data from Lake Erken (Sweden) and Lake Balaton (Hungary) are used to evaluate the variability in settling velocity of SPM. It is found that the variability is substantial and may be accounted for by using a dimensionless moderator for SPM concentration. Empirical data from accumulation area sediments in Lake Erken are used to develop a model for the dynamics of phosphorus sedimentation, burial and diffusion in the sediments. The model is shown to provide reasonable monthly predictions of four functional forms of phosphorus at different sediment depths.
Simulations with the lake phosphorus model using two different climate scenarios indicate that lakes may respond very differently to climate change depending on their physical character. Lake Erken, with a water retention time of 7 years, appears to be much more sensitive than two basins of Lake Mälaren (Sweden) with substantially shorter retention times. The implication would be that in eutrophic lakes with long water retention times, eutrophication problems may become serious if the future becomes warmer. This will be important in contexts of lake management when remedial measures against lake eutrophication have to be taken.
Lemley, Daniel Alan. "Assessing symptoms of eutrophication in estuaries". Thesis, Nelson Mandela Metropolitan University, 2015. http://hdl.handle.net/10948/3427.
Texto completoTuzun, Ilhami. "Eutrophication and its control by biomanipulation". Thesis, University of Essex, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.386919.
Texto completoBryhn, Andreas Christoffer. "Quantitative Understanding and Prediction of Lake Eutrophication". Doctoral thesis, Uppsala universitet, Institutionen för geovetenskaper, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-8593.
Texto completoWittenberg, Mark. "Effects of eutrophication on juvenile scleractinian corals". Thesis, McGill University, 1991. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=60552.
Texto completoMaier, Gerald. "Nutrients and eutrophication in the Taw estuary". Thesis, University of Plymouth, 2009. http://hdl.handle.net/10026.1/2369.
Texto completoSchneider, Jana. "Biomanipulation for eutrophication control in running waters". Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-198843.
Texto completoCheung, Ka Chung. "Effects of eutrophication on soft shore benthic community /". access full-text access abstract and table of contents, 2005. http://libweb.cityu.edu.hk/cgi-bin/ezdb/thesis.pl?mphil-bch-b1988770xa.pdf.
Texto completo"Submitted to Department of Biology and Chemistry in partial fulfillment of the requirements for the degree of Master of Philosophy" Includes bibliographical references (leaves 153-181)
Lee, Harold Thomas. "The effects of eutrophication on wetland plant communities". Thesis, University of Ottawa (Canada), 1993. http://hdl.handle.net/10393/6673.
Texto completoNordvarg, Lennart. "Predictive Models and Eutrophication Effects of Fish Farms". Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2001. http://publications.uu.se/theses/91-554-4932-8/.
Texto completoHartikainen, Hanna-Leena. "Freshwater bryozoan abundence, eutrophication and salmonid fish disease". Thesis, University of Reading, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.493801.
Texto completoMeis, Sebastian. "Investigating forced recovery from eutrophication in shallow lakes". Thesis, Cardiff University, 2012. http://orca.cf.ac.uk/45439/.
Texto completoMcQuatters-Gollop, Abigail. "Phytoplankton as indicators for eutrophication in Europe's regional seas". Thesis, University of Plymouth, 2008. http://hdl.handle.net/10026.1/522.
Texto completoHill, Emma Louise. "Quantitative reconstruction of eutrophication histories in central Mexican lakes". Thesis, University of Nottingham, 2006. http://eprints.nottingham.ac.uk/11354/.
Texto completoVilla, Galaviz Edith. "Bottom-up effects of eutrophication on insect interaction networks". Thesis, University of Bristol, 2019. http://hdl.handle.net/1983/18491c8c-d1b9-4233-9e2a-14423c8ee650.
Texto completoLau, Shun Shun Sam. "Statistical and dynamical systems investigation of shallow lake eutrophication". Thesis, University of Cambridge, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.621103.
Texto completoWiegand, Mario Cesar. "Reservoir eutrophication in the semiarid region: vulnerability and biomanipulation". Universidade Federal do CearÃ, 2015. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=14700.
Texto completoCom o crescente aumento da demanda de Ãgua e a preocupaÃÃo de que a oferta estabelecida nÃo consiga suprir esse consumo, torna-se necessÃria a conservaÃÃo da quantidade e, principalmente, da qualidade da Ãgua disponÃvel, especialmente em regiÃes semiÃridas como o Nordeste brasileiro (NEB), onde esse recurso à escasso. As principais causas da poluiÃÃo da pequena aÃudagem no semiÃrido sÃo: a presenÃa de animais nas margens dos aÃudes, onde defecam e urinam; os efluentes domÃsticos (e.g. lavagem de roupas, Ãguas utilizadas nas atividades domÃsticas); o desmatamento da mata ciliar, que protegeria os aÃudes contra o assoreamento e a entrada de matÃria orgÃnica; a presenÃa de lixo ao ar livre; e o uso de insumos agrÃcolas que contribuem para o processo de eutrofizaÃÃo. Por sua vez, a principal caracterÃstica do processo de eutrofizaÃÃo à o excesso de nutrientes nos corpos dâÃgua, apresentando grandes oscilaÃÃes de crescimento e mortandade de algas e macrÃfitas. AtravÃs da continuidade do processo, hà o acÃmulo de matÃria morta na regiÃo mais profunda desses ambientes, causando o aumento do metabolismo de bactÃrias que ocasiona a mortandade de peixes e outros organismos pela falta ou diminuiÃÃo de oxigÃnio, acrescentando-se, ainda, o fato da produÃÃo de toxinas, por algas cianofÃceas, ser prejudicial à biota e à saÃde humana. Diante disso, estudos que estimem o aporte de nutrientes tornam-se impostergÃveis para que, a partir daÃ, medidas que auxiliem na recuperaÃÃo de reservatÃrios eutrofizados possam ser tomadas. Entre tais medidas hà a biomanipulaÃÃo. Esta à uma ferramenta biolÃgica e o seu preceito basilar consiste na utilizaÃÃo de organismos aquÃticos (e.g. peixes), no sentido de melhorar a qualidade do ecossistema aquÃtico. Pergunta de Partida: à possÃvel tratar um aÃude eutrofizado usando biomanipulaÃÃo No caso afirmativo, quais as particularidades para um aÃude no semiÃrido, principalmente no que tange a sua ictiofauna a qual apresenta maior riqueza de espÃcies, estoques com dominÃncia de peixes onÃvoros e onde a reproduÃÃo dos peixes ocorre durante todo o ano? Assim sendo, com o escopo de responder as aludidas questÃes a presente tese foi dividida em duas partes: a primeira compara o estado de eutrofizaÃÃo e suas provÃveis causas em dois reservatÃrios tropicais, um em clima Ãmido (La Juventud, Cuba) e o outro em clima semiÃrido (Marengo, Brasil). ApÃs estimar o estado trÃfico dos dois reservatÃrios nas estaÃÃes chuvosa e seca, avaliou-se a influÃncia hidrolÃgica e de uso do solo sobre o grau de trofia dos lagos. Concluiu-se que o lago tropical semiÃrido encontrava-se eutrÃfico, enquanto que o lago Ãmido encontrava-se mesotrÃfico. Considerando-se que hà similitude entre os usos do solo nas duas bacias e que, na estaÃÃo chuvosa, o aporte de nutrientes na bacia Ãmida à consideravelmente superior ao da bacia semiÃrida, o maior estado trÃfico da bacia seca sur-preende. A variÃvel que melhor explica esse fenÃmeno à o tempo de residÃncia da Ãgua, que influencia diretamente o tempo de residÃncia do fÃsforo no lago. O elevado tempo de residÃncia da Ãgua na bacia semiÃrida (trÃs vezes superior ao do lago Ãmido) deve-se tanto ao reduzido coeficiente de escoamento superficial (93 versus 595 mm anuais na bacia Ãmida) quanto à excessiva evaporaÃÃo da Ãgua armazenada no reservatÃrio seco (1,2 vezes superior à do reservatÃrio Ãmido). Esses resultados indicam que lagos semiÃridos sÃo mais vulnerÃveis à eutrofizaÃÃo que lagos Ãmidos nos perÃodos de estio e que, portanto, o manejo de suas bacias deve ser mais restritivo à produÃÃo de nutrientes; consoante a segunda parte, essa retrata em particular a questÃo da biomanipulaÃÃo. Nesse sentido, em mesocosmos experimentais de 2.000 L, foram delineados seis tratamentos para avaliar o efeito de duas espÃcies onÃvoras (tilÃpia do Nilo â Oreochromis niloticus e piaba â Astyanax bimaculatus) sobre Ãguas eutrÃficas. Observou-se, ainda, a influÃncia do sedimento como fonte de nutriente para o processo de eutrofizaÃÃo. Os tratamentos avaliados foram: 1. Oreochromis niloticus sem sedimento; 2. Oreochromis niloticus com sedimento; 3. Oreochromis niloticus + Astyanax bimaculatus sem sedimento; 4. Oreochromis niloticus + Astyanax bimaculatus com sedimento; 5. Astyanax bimaculatus sem sedimento e; 6. Astyanax bimaculatus com sedimento. Cada ensaio foi conduzidos por 45 dias. Coletas dâÃgua foram realizadas a cada 15 dias. Foram feitas anÃlises de fÃsforo total, ortofosfato, clorofila a e nitrogÃnio total, sendo este analisado somente no inÃcio e final de cada tratamento. As concentraÃÃes de oxigÃnio dissolvido, temperatura, pH e transparÃncia de Secchi foram feitas in situ. No sedimento realizou-se anÃlises de pH, concentraÃÃo de Ãons e nutrientes tais como Ca2+, Mg2+, Al3+, ferro, fÃsforo assimilÃvel e anÃlise granulomÃtrica. Para se estimar o grau de trofia da Ãgua dos tratamentos foi aplicado o Ãndice de estado trÃfico (IET) de Toledo Jr. et al. (1983). DiferenÃas entre os IETs foram calculadas conforme Carlson (1991). Fez-se, ainda, a anÃlise do teor de fÃsforo total nos peixes. Os resultados sugeriram que os sistemas que continham tilÃpias do Nilo apresentaram baixa eficiÃncia na recuperaÃÃo de Ãguas eutrofizadas. O IET mÃdio obtido nesses ensaios mostrou que a Ãgua manteve-se sempre eutrÃfica. Os tratamentos com piabas mostraram uma melhor eficiÃncia no controle da eutrofizaÃÃo. O IET mÃdio obtido nesses ensaios revelou que a Ãgua passou de eutrÃfica para mesotrÃfica, ao final dos mesmos. Contudo, os resultados encontrados pelas diferenÃas dos IETs nÃo confirmam que as piabas foram sozinhas as principais responsÃveis por esse fato. O mesmo pode ter sido influenciado, tambÃm, pela luz e pela temperatura. Quanto ao teor de fÃsforo total, para os espÃcimes advindos dos tratamentos, a tilÃpia apresentou bioacumulaÃÃo superior ao encontrado nas piabas. Todavia, os resultados foram antagÃnicos para os espÃcimes oriundos diretamente da natureza. Em suma, foram avaliados aspectos da biomanipulaÃÃo de duas espÃcies onÃvoras; o Oreochromis nilotucus que, em funÃÃo de seu comportamento, revelou-se um agente perturbador da qualidade da Ãgua e o Astyanax bimaculatus, a qual se apresentou potencialmente viÃvel para futuras pesquisas de biomanipulaÃÃo.
With the increasing water demand and the concern that the supply can not meet that consumption, it is increasingly necessary conserving the available water, in quantity and (especially) quality. This conservation is especially important in semi-arid regions such as the Brazilian Northeast (NEB), where water is scarce. The main causes of pollution (water waste) in smal reservoirs (in the semiarid) are: the animal presence on the reservoir margins, where they defecate and urinate; domestic wastewater (e.g. laundry water, water used in the household); removal of riparian vegetation, which protects reservoirs against silting and organic matter input; presence of outdoor trash; and use of agricultural inputs that contribute to the process of eutrophication. In turn, the main feature of eutrophication process is excess nutrients in water bodies, with considerable growth fluctuations and eventual death of algae and weeds. With the continuity of the process, there is the accumulation of dead matter in the deepest region of these environments, causing the increase in bacterial metabolism that causes the death of fish and other organisms by oxygen lack or reduction, plus the toxin production by blue-green algae, which are harmful to human health and to the biota at large. Therefore, studies that estimating the nutrient input become urgent. With such studies, strategies for the restoration of eutrophic reservoirs can be implemented. Among such strategies there is biomanipulation. Biomanipulation is a biological strategy based in the use of aquatic organisms (e.g. fish), to balance the aquatic ecosystem. Hypothesis: "Is it possible to treat an eutrophic reservoir using biomanipulation?â If so, what are the particularities of biomanipulating a reservoir the semiarid region, especially considering its rich ictiological diversity, with predominantly omnivorous fish population and where fish reproduction occurs throughout the year? Therefore, in order to answer these questions, this thesis was divided in two parts, the first comparing the state of eutrophication and its probable causes in two tropical reservoirs, one in wet climate (La Juventud, Cuba) and the other in semiarid climate (Marengo, Brazil). After estimating the trophic state of the two reservoirs in rainy and dry seasons, we evaluated the influence of hydrology and of land use on reservoir trophic level. It was found that the semi-arid tropical reservoir was eutrophic, while the reservoir on humid climate was mesotrophic. Considering that there is similar land use in the two basins and that, in the rainy season, the nutrient input in the wet basin is considerably higher than the nutrient input in the semiarid basin, the higher trophic state of the semi-arid basin is surprising. The variable that best explains this phenomenon is the water residence time, which directly influences the phosphorus residence time in the reservoir. The high water residence time in the semiarid basin reservoir (three times that of the reservoir in humid climate) is due as much to the low runoff coefficient (93 versus 595 mm per year in the reservoir in humid climate) as to the excessive water evaporation in the semiarid reservoir (1.2 times that of the reservoir in humid climate). These results indicate that semiarid reservoirs are more vulnerable to eutrophication than reservoirs in humid climate in summer periods and, therefore, the management of their basins should be more restrictive to nutrient production; as to the second part, it reflects the particularities of the biomanipulation issue. Thus, in experimental 2000L mesocosms, six treatments were outlined to evaluate the effects of two omnivorous species (Nile tilapia â Oreochromis niloticus and piaba â Astyanax bimaculatus) on eutrophic waters. It was also taken into account the sediment influence as a nutrient source for the eutrophication process. The treatments were: 1. Oreochromis niloticus without sediment; 2. Oreochromis niloticus with sediment; 3. Oreochromis niloticus plus Astyanax bimaculatus without sediment; 4. Oreochromis niloticus plus Astyanax bimaculatus with sediment; 5. Astyanax bimaculatus without sediment and; 6. Astyanax bimaculatus with sediment. Each test was conducted for 45 days. Water samples were taken every 15 days. Tests were performed for total phosphorus, orthophosphate, chlorophyll a and total nitrogen (TN being tested only at the beginning and at the end of each treatment). Testing for dissolved oxygen concentration, temperature, pH and Secchi transparency was done in situ. The sediment was tested for pH, ion content, nutrients (such as Ca2+, Mg2+, Al3+, iron and assimilable phosphorous) and particle size. In order to estimate the treatment water trophic level, the trophic state index (TSI) of Toledo Jr. et al. (1983) was applied. Differences between the TSI values were calculated acording to Carlson (1991). Also, the fish were tested for total phosphorus content. The results suggested that systems containing tilapia showed low efficiency in the recovery of eutrophic waters. The average TSI obtained in these tests showed that the water remained eutrophic. Treatments with piabas showed better efficiency in controlling eutrophication. The average TSI obtained in these tests showed that the water went from eutrophic to mesotrophic. However, the results found by TSI differences do not confirm if the piabas (Astyanax bimaculatus) were alone responsible for this. The same results could be also influenced by light and temperature. As to the total phosphorus content of specimens coming from treatments, tilapia showed higher bioaccumulation than that shown by piabas. However, the results were antagonic to those obtained from specimens taken directly from nature. In short, two omnivorous species were tested for their biomanipulation potential; the Oreochromis nilotucus, which, due to its behavior, proved to be an agent of water quality disruption and the Astyanax bimaculatus, which was shown as being potentially viable for future biomanipulation research.
Mimoso, João Nuno Maximino. "Assessment of eutrophication status of two Northern Irish Loughs". Master's thesis, Faculdade de Ciências e Tecnologia, 2008. http://hdl.handle.net/10362/3927.
Texto completoCoastal eutrophication is a global problem which affects many natural systems and human activities throughout the world. The phenomenon of eutrophication has increased substantially due to human activities. It is caused by excess nutrients and is identified by the emergence of some symptoms. The proposed assessment will address this problem in a more specific way. The Assessment of Estuarine Trophic Status (ASSETS)methodology is going to be performed to two Northern Irish Loughs in order to rank their eutrophication status and allow a comparison with other existing methods. The data available for these systems allowed the implementation of this innovative methodology, which can provide a classification based on pressure, state and response. Thus, by considering the influences of anthropogenic activities over the coastal areas, examination of specific symptoms of the water systems and analyzing the indicators for future response, it is possible to achieve consistent results regarding the quality of the water in the “loughs” and, consequently, identify the most adequate tools to enable their proper management. By controlling the nutrient enrichment of coastal areas it is possible to avoid problems, such as, fish kills, interdiction of shellfish aquaculture, loss or degradation of sea grass beds and smothering of bivalves and other benthic organisms. As a result, many social and economical costs can be reduced. ASSETS was successfully applied to both Strangford Lough and Belfast Lough, classifying them as “Moderate”. This classification will not change their water quality status under the Water Framework Directive, Urban Wastewater Treatment Directive or Nitrates Directive, however, it is a tool to guide policy makers into better decisions in terms of future management.
Gorrie, Jason Robert. "An Examination Of Water Quality Impacts On Lake Manassas". Thesis, Virginia Tech, 2007. http://hdl.handle.net/10919/32815.
Texto completoMaster of Science
Meeuwig, Jessica Jane. "All water is wet : predicting eutrophication in lakes and estuaries". Thesis, McGill University, 1998. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=35918.
Texto completoMeeuwig, Jessica J. "All water is wet, predicting eutrophication in lakes and estuaries". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0027/NQ50220.pdf.
Texto completoChaichana, Ratcha. "Birds and the eutrophication of a system of small lakes". Thesis, University of Liverpool, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.494132.
Texto completoHlahane, Keneilwe. "Monitoring eutrophication in the Vaal Dam using satellite remote sensing". Master's thesis, Faculty of Science, 2018. http://hdl.handle.net/11427/30022.
Texto completoHayward, Robert Scott. "Eutrophication effects on bioenergetic conditions for Lake Erie yellow perch /". The Ohio State University, 1988. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487592050228906.
Texto completoMcDougall, Bryn. "A study of the eutrophication of North Lake, Western Australia". Thesis, McDougall, Bryn (1988) A study of the eutrophication of North Lake, Western Australia. Honours thesis, Murdoch University, 1988. https://researchrepository.murdoch.edu.au/id/eprint/38914/.
Texto completoCrile, Patrick. "A Limnological Analysis of Lake Manassas, with an Updated Baseline Through 2010". Thesis, Virginia Tech, 2013. http://hdl.handle.net/10919/19337.
Texto completoLake Manassas remains an enriched or eutrophic system, meaning the levels of nutrients and biomass production in lake waters is above desired standards. Nutrient loading occurs via a stream network with the largest contributor being Broad Run which is consistent with previous water quality studies.
The lake serves as the sole water source for nearly 40,000 residents and businesses and ensuring clean and safe water is of significant importance. Close monitoring in conjunction with the implementation of appropriate management practices within the watershed are necessary to prevent water quality from becoming significantly degraded.
Master of Science
Chapman, Antony Shaun. "Particulate phosphorus loss from agricultural land via sub-surface drainage in the UK : tracing, modelling and risk assessment". Thesis, Coventry University, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.365249.
Texto completoSuckling, Rachel Jane. "Diatom-based biomonitoring of nutrient enrichment in UK upland streams". Thesis, University of Newcastle Upon Tyne, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.323710.
Texto completoWhitehead, Peter. "Phosphorus retention from dairy slurry in four grassland soils and release to soil solution". Thesis, University of Reading, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.250638.
Texto completoRincon, Marinela Nazareth Colina. "Determination of nutrients and heavy metal species in samples from Lake Maracaibo". Thesis, Sheffield Hallam University, 2001. http://shura.shu.ac.uk/20281/.
Texto completoBasahi, Ilham A. "Management of water quality of the Marib Lake in Yemen". Thesis, University of Newcastle upon Tyne, 2003. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.289214.
Texto completoMvungi, Esther Francis. "Seagrasses and Eutrophication : Interactions between seagrass photosynthesis, epiphytes, macroalgae and mussels". Doctoral thesis, Stockholms universitet, Botaniska institutionen, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-55808.
Texto completoAt the time of the doctoral defense, the following papers were unpublished and had a status as follows: Papers 1, 3 and 4: Submitted. Paper 2: Manuscript.
Swedish Agency for Research Cooperation (Sida/SAREC) marine bilateral programme
Stojanovic, Severin. "Numerical Reaction-transport Model of Lake Dynamics and Their Eutrophication Processes". Thesis, Université d'Ottawa / University of Ottawa, 2011. http://hdl.handle.net/10393/20231.
Texto completoKasim, Nor Zalina. "Mititgation and management strategies for reducing eutrophication in tropical humid regions". Thesis, University of Leeds, 2015. http://etheses.whiterose.ac.uk/12289/.
Texto completoNicholls, David John School of Biological Science UNSW. "Eutrophication and excessive Macroalgal growth in Lake Macquarie, New South Wales". Awarded by:University of New South Wales. School of Biological Science, 1999. http://handle.unsw.edu.au/1959.4/17219.
Texto completoHeilmann, Jens Peter. "Eutrophication, phytoplankton productivity and the size structure of the phytoplankton community". Thesis, Bangor University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.263279.
Texto completoFeleke, Arega Woldemariam. "A diagenetic two-layer eutrophication model for Tolo Harbour, Hong Kong". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2000. http://hub.hku.hk/bib/B31241657.
Texto completoLantto, M. (Maija). "Spatial analysis of eutrophication-related indicators in the northern Bothnian Bay". Master's thesis, University of Oulu, 2016. http://urn.fi/URN:NBN:fi:oulu-201605071653.
Texto completoLinder, Wiktorsson Emilia. "Eutrophication effects on a coastal macrophyte community in the Bothnian Sea". Thesis, Umeå universitet, Institutionen för ekologi, miljö och geovetenskap, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-184367.
Texto completoChen, Juan. "Sediment remediation as a technique for restoring eutrophic wetlands and controlling nuisance Chironomidae /". Access via Murdoch University Digital Theses Project, 2004. http://wwwlib.murdoch.edu.au/adt/browse/view/adt-MU20050817.102759.
Texto completoJordan, Philip. "Modelling diffuse phosphorus loads from land to freshwater : a lake and catchment study of Friary Lough, Co. Tyrone". Thesis, University of Ulster, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.322412.
Texto completoJones, M. "The role of environmental effects and Acinetobacter spp. in enhanced biological phosphate removal". Thesis, Cranfield University, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.309651.
Texto completoHolmes, Katherine E. (Katherine Elizabeth). "The effects of eutrophication on clionid (Porifera) communities in Barbados, West Indies". Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=23896.
Texto completoOdhiambo, Moses y Joyanto Routh. "Distribution of black carbon and its impact on Eutrophication in Lake Victoria". Thesis, Linköpings universitet, Tema Miljöförändring, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-130696.
Texto completoBlanch, Roure Josep Salvador. "Changes in terpene production and emission in response to climate change and eutrophication". Doctoral thesis, Universitat Autònoma de Barcelona, 2010. http://hdl.handle.net/10803/42003.
Texto completoUn 80% dels Compostos Orgànics Volaltils (COVs) que s’emeten anualment a l’atmosfera provenen de fonts biogèniques (COVBs), entre els que destaquen diferents famílies com per exemple els isoprenoids. La producció i emissió d’aquests compostos està influenciada per variables ambientals com la llum i la temperatura. Aquestes variables ambientals es veuran afectades pel canvi global que s’ha predit per les properes dècades. L’objectiu de la present tesi va estar estudiar l’efecte del canvi global i específicament canvi climàtic, escalfament i eutrofització, sobre el continguts i les emissions de les famílies isoprenoids, mono i sesquiterpens. A més, varem testar aquests efectes en diferents famílies i genotips, donades les variacions intra i interespecífiques. Per aconseguir resoldre aquestes preguntes varem realitzar diferents experiments, des de condicions seminaturals fins a condicions més controlades (de laboratori), on un major control de les condicions ambientals de mostreig permet estudiar efectes de forma aïllada. La identificació i quantificació dels compostons, tant continguts com emesos, es va fer mitjançant cromatografia de gasos i espectrometria de masses. Les principals conclusions d’aquesta tesis són: l’escalfament i la sequera van incrementar tant el contingut com les emissions de terpens en espècies acumuladores i en espècies no acumuladores. No obstant, les respostes de les diferents espècies a l’eutrofització van ser diverses, depenent de l’espècie i de les condicions ambientals del moment de mostreig. Finalment, es van constatar les diferències intra i interespecífiques: espècies diferents i genotips diferents es van comportar de diferent manera, tant en espècies acumuladores com en espècies no acumuladores.
Cannell, Simon. "Buffer zones, ground water quality and ditch-water eutrophication in a lowland mire". Thesis, University of Bristol, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.388117.
Texto completoStåhle, Johanna y Linnea Henriksson. "Using Blue Mussels as a Tool for Mitigating Eutrophication in the Baltic Sea". Thesis, Linköpings universitet, Industriell miljöteknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-149281.
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