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Готові списки джерел за темами / Marine environmental monitoring / Дисертації

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Дисертації з теми "Marine environmental monitoring"

Автор: Grafiati

Опубліковано: 3 червня 2025

Оновлено: 31 липня 2025

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1

Gong, Weidong. "Ocean sensors, for marine environmental monitoring." Thesis, University of Southampton, 2010. https://eprints.soton.ac.uk/143801/.

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Various sensors and instruments were developed to measure the chemical and physical properties of sea water, but many are expensive and too large to be used on mass deployed vehicles such as the Argo float and submersed gliders. Marine mammal and fish tags require further sensor miniaturisation. This thesis describes the development of new in-situ micro sensor technology for marine environmental monitoring. Nitrite and nitrate are two forms of dissolved inorganic nitrogen in sea water and their availability is a key factor in the regulation of primary productivity in the sea. The in-situ deter

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2

Osterloff, Jonas [Verfasser]. "Computer Vision for Marine Environmental Monitoring / Jonas Osterloff." Bielefeld : Universitätsbibliothek Bielefeld, 2018. http://d-nb.info/1169314678/34.

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3

Graffelman, Jan. "Contributions to the multivariate Analysis of Marine Environmental Monitoring." Doctoral thesis, Universitat Politècnica de Catalunya, 2000. http://hdl.handle.net/10803/6525.

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The thesis parts from the view that statistics starts with data, and starts by introducing the data sets studied: marine benthic species counts and chemical measurements made at a set of sites in the Norwegian Ekofisk oil field, with replicates and annually repeated. An introductory chapter details the sampling procedure and shows with reliability calculations that the (transformed) chemical variables have excellent reliability, whereas the biological variables have poor reliability, except for a small subset of abundant species. Transformed chemical variables are shown to be approximately nor

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4

Francisco, Francisco. "Sonar for environmental monitoring of marine renewable energy technologies." Licentiate thesis, Uppsala universitet, Elektricitetslära, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-314065.

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Human exploration of the hydrosphere is ever increasing as conventional industries grow and new industries emerge. A new emerging and fast-growing industry is the marine renewable energy. The last decades have been characterized by an accentuated development rate of technologies that can convert the energy contained in stream flows, waves, wind and tides. This growth benefits from the fact that human society has become notably aware of the well-being of the environment that we all live in. This brings a human desire to implement technologies which cope better with the natural environment. Yet,

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5

Hess, Philipp. "The determination and environmental significance of planar aromatic compounds in the marine environment." Thesis, Robert Gordon University, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.388494.

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6

Tsui, Man-leung. "Biological monitoring and its value in assessing the marine environment of Hong Kong /." Hong Kong : University of Hong Kong, 1996. http://sunzi.lib.hku.hk/hkuto/record.jsp?B18040056.

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7

Swift, Clare. "Marine environmental monitoring of a ship-based seawater scrubber system." Thesis, University of Newcastle Upon Tyne, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.500933.

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The shipping industry is becoming increasingly visible on the global environmental agenda as air emissions from vessels make an increasingly conspicuous contribution to air quality. With the forecast expansion of world trade; scientists are estimating global emissions to increase by 30% to 1.45 billion tonnes in the next decade. This would make shipping responsible for 6% of global emissions by 2020. The International Marine Organisation (IMO) Annex VI entered into force in 2005 and is currently the most important international treaty governing emissions to air from ocean going vessels. It has

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8

Cooper, Keith. "Marine aggregate dredging : a new regional approach to environmental monitoring." Thesis, University of East Anglia, 2013. https://ueaeprints.uea.ac.uk/48093/.

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The subject of this thesis is the marine aggregate dredging industry, and specifically the approach taken to the monitoring of environmental effects on the seabed. The thesis forms the evidence required to allow the author to be examined for a PhD by Publication, and comprises of a list of the author’s publications, a confirmation of the author’s contribution to the multi-authored papers, and a critical analysis of the published work. The critical analysis takes the form of an essay, in which a case for switching to a new system of environmental monitoring is outlined. The essay presents a log

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9

Michalek, Jeffrey L., Thomas W. Wagner, Joseph J. Luczkovich, and Richard W. Stoffle. "Multispectral Change Vector Analysis for Monitoring Coastal Marine Environments." Photogrammetric Engineering & Remote Sensing, 1993. http://hdl.handle.net/10150/296670.

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Documenting temporal changes to coastal zones is an essential part of understanding and managing these environments. The exclusive use of traditional surveying tools may not be practical for monitoring large, remote, or rapidly changing areas. This paper investigates the utility of multispectral Landsat Thematic Mapper satellite data for documenting changes to a Caribbean coastal zone using the change vector analysis processing technique. The area of study was the coastal region near the village of Buen Hombre on the north coast of the Dominican Republic. The primary habitats of interest

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10

Kruglick, Alex W. "Water Quality Monitoring in a Pilot Marine Integrated Aquaculture System." Scholar Commons, 2012. http://scholarcommons.usf.edu/etd/4110.

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Land based aquaculture systems are growing in popularity, and there is a drive to improve the efficiency of their energy and water systems for both economic and environmental benefit. Recirculating Aquaculture Systems (RAS) generally refer to systems that recycle their wastewater streams to be more or less a zero discharge facility. A more sustainable approach is emerging in the form of Integrated Aquaculture Systems (IAS) where maximum utility is realized from the various components so that fresh water use is reduced, water quality is improved, energy use is reduced, and new markets are creat

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11

McIntyre, Fiona Doreen. "Development of visual survey methods to support environmental monitoring and fisheries management." Thesis, University of Aberdeen, 2015. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=226947.

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Visual surveys provide for non-invasive sampling of organisms and habitats in the marine environment. They are particularly important in deep-sea habitats which are vulnerable to damage caused by alternative destructive sampling devices such as bottom trawls. However, traditional visual survey platforms tend to have limited area coverage which is insufficient for mapping the vast expanses of the deep-sea, particularly for relatively sparsely distributed organisms such as fish. This thesis presents the development of a visual survey method capable of surveying large areas of the seabed in deep

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12

Malfante, Marielle. "Automatic classification of natural signals for environmental monitoring." Thesis, Université Grenoble Alpes (ComUE), 2018. http://www.theses.fr/2018GREAU025/document.

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Ce manuscrit de thèse résume trois ans de travaux sur l’utilisation des méthodes d’apprentissage statistique pour l’analyse automatique de signaux naturels. L’objectif principal est de présenter des outils efficaces et opérationnels pour l’analyse de signaux environnementaux, en vue de mieux connaitre et comprendre l’environnement considéré. On se concentre en particulier sur les tâches de détection et de classification automatique d’événements naturels.Dans cette thèse, deux outils basés sur l’apprentissage supervisé (Support Vector Machine et Random Forest) sont présentés pour (i) la classif

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13

Yu, Pui-shan. "The potential for using biomonitoring in the Hong Kong marine environment /." Hong Kong : University of Hong Kong, 1996. http://sunzi.lib.hku.hk/hkuto/record.jsp?B17457622.

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14

Tsui, Man-leung, and 徐文亮. "Biological monitoring and its value in assessing the marine environment of Hong Kong." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1996. http://hub.hku.hk/bib/B3125357X.

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15

Torre, Cosio Jorge. "Inventory, monitoring and impact assessment of marine biodiversity in the Seri Indian territory, Gulf of California, Mexico." Diss., The University of Arizona, 2002. http://hdl.handle.net/10150/280215.

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The conservation of marine ecosystems is at least 20 years behind terrestrial and freshwater ecosystems due to the difficulties in studying and monitoring these dynamic and complex environments. Furthermore, marine environment receive less attention because human impacts are less visible in the sea, and oceans are viewed as global commons. The purpose of the present dissertation is to contribute to the knowledge of marine conservation through the development of three components in natural resources management: inventory, monitoring, and assessment of impacts. I elaborate a multi-taxa inventory

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16

Garza, Martínez Paulina. "Mytilus edulis as Bioindicator for Coastal Zone Environmental Assessment : A study of Kosterhavets Marine National Park." Thesis, KTH, Industriell ekologi, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-33052.

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Mollusks growth is a very important and sensitive response to environmental stresses sincethey are good indicators of the available amount of contaminants in the water; reduced growth represents adverse environmental effects and possible effects on the population.Sweden has about 3,000 Natural Reserves and 28 National Parks. Kosterhavets is the first National Marine Park and it is located on the west coast of Sweden, it is also considered one of the most vulnerable areas since 6000 marine species can be found here and about200 are found nowhere else. It is not only a touristic destination; it

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17

Chang, Lydia, and 張麗迪. "Transport of dinoflagellate cysts through ballast water and its implications for marine water monitoring in Hong Kong." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1994. http://hub.hku.hk/bib/B31252795.

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18

Chang, Lydia. "Transport of dinoflagellate cysts through ballast water and its implications for marine water monitoring in Hong Kong /." [Hong Kong : University of Hong Kong], 1994. http://sunzi.lib.hku.hk/hkuto/record.jsp?B13813481.

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19

Chiu, Yu-yeung, and 趙汝揚. "Environmental radiation monitoring at the low level radioactive waste storage facility in Siu A Chau and development of a particledispersion model in marine environment." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2006. http://hub.hku.hk/bib/B38573611.

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20

Chiu, Yu-yeung. "Environmental radiation monitoring at the low level radioactive waste storage facility in Siu A Chau and development of a particle dispersion model in marine environment." Click to view the E-thesis via HKUTO, 2006. http://sunzi.lib.hku.hk/hkuto/record/B38573611.

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21

Santagostino, S. F. "AQUATIC POLLUTION AND BIOLOGICAL MONITORING OF THE MARINE ENVIRONMENT: TOXICOLOGY, HISTOPATHOLOGY AND ECOLOGICAL RISK OF SELECTED FISH SPECIES." Doctoral thesis, Università degli Studi di Milano, 2016. http://hdl.handle.net/2434/350847.

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The impact of multiple anthropogenic stressors on the marine environment has increased to large extents within the past few decades. Piscivorous fish can bioaccumulate pollutans to significantly higher concentrations than those found in the water or sediments, due to the lipid solubility and resistance of these compounds to numerous degenerative processes. The use of fish from different hydrological settings as bio-indicators represents a useful complementary choice to evaluate the levels and responses of marine organisms to pollutans, and to assess the global marine status. The purpose of thi

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22

BUSCA, CLAUDIA. "Integrated Approaches For The Monitoring And Assessment Of Environmental Status Of The Adriatic Sea In The Framework Of The European Marine Strategy Directive." Doctoral thesis, Università Politecnica delle Marche, 2017. http://hdl.handle.net/11566/245300.

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Ad oggi esistono fortissime evidenze che le attività antropiche stanno causando rapidi cambiamenti alle dinamiche degli ecosistemi marini. Molti di questi cambiamenti stanno già avvenendo negli oceani del nostro pianeta, con potenziali conseguenze negative nelle prossime decadi. La Direttiva Quadro sulla Strategia Marine (MSFD, 200856/EU), approvata nel 2008 dal Consiglio Europeo e dal Parlamento Europeo, richiede agli Stati Membri di fornire informazioni sullo stato di salute dei mari di loro pertinenza " stabilendo un quadro per le azioni comunitarie nel campo delle politiche ambientali mar

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23

Hemming, Jon Michael. "Evaluation of the Use of the Bivalves Ischadium recurvum Rafinesque, 1820 and Corbicula fluminea Muller, 1774 as Biological Indicators of Relative Water Quality in Terms of Growth and Upper Temperature Tolerance." Thesis, University of North Texas, 1997. https://digital.library.unt.edu/ark:/67531/metadc278827/.

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Growth of mussels under laboratory conditions was examined under various food regimes in different water types and temperatures. Growth was less than would be useful as an indicator and comparisons with field exposures were of minimal value. The effects of organophosphates on bivalves were examined via toxicity tests, tissue concentration, and by controlling exposure through the use of physical constraints. Upper temperature tolerance of both bivalve species was examined with respect to different acclimation temperatures and organophosphate exposures. Deviations from control exposures occurred

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24

Durland, Donahou Allison. "Loggerhead Sea Turtle (Caretta caretta) Hatchling Disorientation in Broward County, Florida." NSUWorks, 2014. http://nsuworks.nova.edu/occ_stuetd/15.

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Hatchling disorientation after emergence is a major factor impacting sea turtle populations. This study utilized data from over 1,200 Florida Fish and Wildlife Conservation Commission (FWC) Marine Turtle Disorientation Report forms from years 2006 to 2011 to assess changes in the severity and locations of disorientation events and the impact of municipal beach lighting ordinances. While the FWC forms were completed for all sea turtle species observed, this study focused only on loggerhead sea turtles (Caretta caretta). A Disorientation Severity Index (DSI) was derived from the number of hatchl

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25

Tolentino-Serrano, Brandon. "In the Eye of the Storm: Houston after Hurricane Harvey." Scholarship @ Claremont, 2019. https://scholarship.claremont.edu/pomona_theses/203.

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Situated in one of the wettest climates in America, Houston, TX has had a long history of heavy rains and unprecedented floods. Unfortunately, floods have become more common over the last few decades as climate change increases the frequency and intensity of hurricanes around the globe. To complicate matters further, Houston has quickly sprawled to accommodate over 2.5 billion people. Rapid urbanization has rendered the landscape even more susceptible to floods through excess concretization and watershed disturbance. This thesis traces the history of the Bayou City in relation to the damages c

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26

Roscales, García José Luis. "Linking ecology and Environmental chemistry: pelagic seabirds as indicators of marine contamination = Entre la ecología y la química ambiental: Las aves pelágicas como indicadores de la contaminación marina." Doctoral thesis, Universitat de Barcelona, 2010. http://hdl.handle.net/10803/378349.

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Exposure to contaminants, such as Persistent Organic Pollutants (POPs), is currently considered a serious anthropogenic threat to marine predators and their food webs. Exposure to contaminants by marine wildlife is mainly related to their trophic ecology, distribution and movements. However, the contribution of these biological features to pollutant levels remains poorly understood in most marine predators, including seabirds. New methodologies, including dietary and geographic tracers, such as stable isotope analyses, and a wide array of devices to track movement at different spatial and temp

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27

Meyer, Matthias. "The adjoint method of optimal control for the acoustic monitoring of a shallow water environment." Doctoral thesis, Universite Libre de Bruxelles, 2007. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/210610.

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Originally developed in the 1970s for the optimal control of systems governed by partial differential equations, the adjoint method has found several successful applications, e.g. in meteorology with large-scale 3D or 4D atmospheric data assimilation schemes, for carbon cycle data assimilation in biogeochemistry and climate research, or in oceanographic modelling with efficient adjoint codes of ocean general circulation models.<p><p>Despite the variety of applications in these research fields, adjoint methods have only very recently drawn attention from the ocean acoustics community. In ocean

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28

Stach, Robert [Verfasser]. "Mid infrared sensor technologies for environmental and occupational health and safety : advancement and application of infrared spectroscopies for monitoring fuel residues in marine ecosystems,and inhalable particles in mining scenarios / Robert Stach." Ulm : Universität Ulm, 2021. http://d-nb.info/1240314388/34.

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29

Aidoo, Eric. "Geostatistical modelling of recreational fishing data: A fine-scale spatial analysis." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2016. https://ro.ecu.edu.au/theses/1813.

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The sustainability of recreational fisheries resources rely on effective management of the fishery which includes monitoring of any changes in the fishery. In order to facilitate the ongoing management of the recreational fishery, an understanding of the spatial dynamics of catch per unit effort (catch rate), fishing effort and species diversity is important for fishery managers to make area-specific decisions and to develop strategies for ecosystem based fisheries management. These indices are critical components of information used to inform on recreational fishing activities and evaluate th

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30

Montoya-Maya, Phanor Hernando. "Dynamics of larval fish and zooplankton in selected south and west coast estuaries of South Africa." Thesis, Rhodes University, 2009. http://eprints.ru.ac.za/1641/.

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31

Pombo, Maíra. "The Atlantic Ghost Crab Ocypode quadrata (Decapoda: Ocypodidae) as bioindicator of sandy beaches: assessment of the influence of environmental, behavioral and population factors." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/21/21134/tde-03062015-144544/.

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The populations of the ghost-crab Ocypode quadrata have been evaluated as bioindicators at sandy beaches, but for this purpose some shortcomings need to be addressed. This study assessed several features of the species biology, from daily activity cycles to effectively its role as bioindicator. Between that, the occupation of burrows was evaluated at several morphodymically distinct beaches and it differed temporally, among the areas and within beach strata, indicating that assessing these populations through the indirect method require more caution. The period of the year after major cold fro

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32

Conceição, Graziella Feitoza. "Avaliação e perspectivas do monitoramento de mamíferos marinhos executados durante atividades de perfuração de poços marítimos na bacia de Sergipe/Alagoas." Universidade Federal de Sergipe, 2015. https://ri.ufs.br/handle/riufs/4145.

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Projects to observe the marine biota are developed worldwide to mitigate the impacts of anthropogenic noise on marine mammals. The first chapter of this dissertation analyzes guides published by various institutions to orient the methodology to be applied in those projects, in order to ensure better efficacy in mitigating and quality of acquired data. Therefore bibliographic research was made on the internet and it was found 16 guides specific to monitoring cetaceans. The protocols were similar in methodology and mitigation measures suggested. The second chapter analyzed a set of forms util

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33

Nightingale, Philip D. "Low molecular weight halocarbons in seawater." Thesis, University of East Anglia, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.280971.

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34

Peters, Joseph Richard. "Pharmaceutical Contaminants as Stressors on Rocky Intertidal and Estuarine Organisms: a Case Study of Fluoxetine." PDXScholar, 2016. https://pdxscholar.library.pdx.edu/open_access_etds/2729.

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Анотація:

Contaminants such as pharmaceuticals are of increasing concern due to their ubiquitous use and persistence in surface waters worldwide. Limited attention has been paid to the effects of pharmaceuticals on marine life, despite widespread detection of these contaminants in the marine environment. Of the existing studies, the majority assess the negative effects of pharmaceuticals over an exposure period of 30 days or less and focus on cellular and subcellular biomarkers. Longer studies are required to determine if chronic contaminant exposure poses risks to marine life at environmentally relevan

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35

Alsarawi, Hanan Ahmad. "Developing an integrated strategy for the assessment of hazardous substances in Kuwait's marine environment." Thesis, University of Plymouth, 2017. http://hdl.handle.net/10026.1/10603.

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Kuwait is undergoing rapid economic growth involving substantial developments along its coastal shores and the marine environment. Many of the activities in the region are associated with oil industry, which can pollute the shores leading to contamination from oil residues, tar balls and trace metals. About 2 million barrels of oil are spilled annually from routine discharges into the Gulf, which derives mainly from dirty ballast waters and tank washing. The comprehensive literature review of hazardous substances in Kuwait’s marine environment has concluded that for the majority of these pollu

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36

Gilbert, Peter James, and mikewood@deakin edu au. "Monitoring the marine environment adjacent to a petroleum refinery on Corio Bay, Victoria, Australia." Deakin University, 1994. http://tux.lib.deakin.edu.au./adt-VDU/public/adt-VDU20050825.140927.

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The objective of the work reported in this thesis was to design and implement an ecological effects environmental monitoring program which would: 1) Collect baseline biological information on sessile epibiotic fouling communities from an area adjacent to a petroleum refinery located on Corio Bay, Victoria, to allow comparison with results of future monitoring for the assessment of long term temporal water quality trends. 2) Detect and if possible - estimate the magnitude of any influence on epibiotic fouling communities within the Corio Bay marine ecosystem attributable to op

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37

Sutherland, Kate. "The dynamics of Larval fish and Zooplankton assemblages in the Sundays Estuary, South Africa." Thesis, Nelson Mandela Metropolitan University, 2010. http://hdl.handle.net/10948/1119.

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The larval fish and zooplankton assemblages were studied in the permanently open Sundays Estuary on the south-east coast of South Africa, using standard boat-based plankton towing methods. A total of 8174 larval and early juvenile fishes were caught, representing 12 families and 23 taxa. The Clupeidae, Gobiidae and Blenniidae were the dominant fish families. Common species included Gilchristella aestuaria, Caffrogobius gilchristi, Omobranchus woodi, Liza dumerilii, Glossogobius callidus and Myxus capensis. Estuarine resident species (Category I) predominantly in the preflexion developmental st

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38

Nicholson, Mike. "Detecting patches and trends : the design and analysis of surveys and monitoring programmes in the marine environment." Thesis, University of East Anglia, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.365050.

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39

Alfonsi, Eric. "Le marsouin commun et le phoque gris en mer d'Iroise et le long de la façade Atlantique française : génétique des populations et modifications de l'écosystème." Thesis, Brest, 2013. http://www.theses.fr/2013BRES0073/document.

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Les mammifères marins sont des espèces clés des écosystèmes. Ils subissent un nombre important de modifications de leur milieu qui nécessitent la mise en place de stratégie de conservation. Pour cela la connaissance de la structure des populations est primordiale. Une étude de génétique des populations a été menée sur deux espèces emblématiques de la mer d'Iroise. Pour le marsouin commun, espèce connaissant un retour le long des côtes françaises, nos travaux montrent, de manière inattendue, que ce retour est le résultat de deux déplacements différents et qu'il y a une hybridation entre les ind

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40

Chalmers, Russell. "Systematic marine spatial planning and monitoring in a data poor environment: a case study of Algoa Bay, South Africa." Thesis, Rhodes University, 2012. http://hdl.handle.net/10962/d1015695.

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Globally the failure of traditional fisheries management approaches is evident through the increasing number of overexploited or depleted marine stocks. Past sectoral management has failed to address cumulative impacts of fisheries activities on ecosystem health. Ecosystem based approaches have been advocated as a viable alternative for sustainable management of marine ecosystems as they present a holistic and precautionary approach, which integrates management of multiple activities with that of maintaining ecological health. Although conceptually advanced, implementation has been poor due to

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41

Strand, Jakob. "Coupling marine monitoring and risk assessment by integrating exposure, bioaccumulation and effect studies : a case study using the contamination of organotin compounds in the Danish marine environment /." Roskilde : Roskilde University, Department of Life Sciences and Chemistry, 2003. http://hdl.handle.net/1800/571.

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42

Kazour, Maria. "Active and passive biomonitoring tools for microplastics assessment in two highly polluted aquatic environments : case study of the Seine estuary and the Lebanese coast SOURCES OF MICROPLASTICS POLLUTION IN THE MARINE ENVIRONMENT: IMPORTANCE OF WASTEWATER TREATMENT PLANT AND COASTAL LANDFILL MICROPLASTICS POLLUTION ALONG THE LEBANESE COAST (EASTERN MEDITERRANEAN BASIN): OCCURRENCE IN SURFACE WATER, SEDIMENTS AND BIOTA SAMPLES JUVENILE FISH CAGING AS A TOOL FOR ASSESSING MICROPLASTICS CONTAMINATION IN ESTUARINE FISH NURSERY GROUNDS IS BLUE MUSSEL CAGING AN EFFICIENT METHOD FOR MONITORING ENVIRONMENTAL MICROPLASTICS POLLUTION?" Thesis, Littoral, 2019. http://www.theses.fr/2019DUNK0544.

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La production de plastique est en augmentation continue pour répondre à la forte demande mondiale. Cette production massive est la source d'importantes quantités de plastiques que l'on retrouve dans les milieux aquatiques. Parmi ces plastiques, les microplastiques (MP) (particules microscopiques d’une taille < 5 mm) se retrouvent dans l’eau, les sédiments et sont susceptibles d’être ingérés par divers organismes marins. Cette thèse se focalise sur (1) l’évaluation des sources et des apports de microplastiques au milieu aquatique et de leur présence dans les organismes, et (2) de tester la f

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Amélineau, Françoise. "Sensibilité d’un oiseau marin arctique aux changements environnementaux." Thesis, Montpellier, 2016. http://www.theses.fr/2016MONTT110/document.

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L’Arctique se réchauffe deux fois plus vite que le reste du monde, entrainant des changements majeurs des écosystèmes marins. Par exemple, l’étendue de la banquise diminue, et la distribution des masses d’air change, modifiant les régimes de vents et de précipitations. Parallèlement à ces changements climatiques, l’Arctique est soumise à une pollution anthropique croissante amenée par les circulations atmosphériques et océaniques, et accentuée par le développement des activités humaines locales. Dans ce contexte, il est urgent de comprendre les impacts écologiques de ces modifications environn

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Sinnott, Tyler King. "Eelgrass (Zostera marina) Population Decline in Morro Bay, CA: A Meta-analysis of Herbicide Application in San Luis Obispo County and Morro Bay Watershed." DigitalCommons@CalPoly, 2020. https://digitalcommons.calpoly.edu/theses/2236.

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The endemic eelgrass (Zostera marina) community of Morro Bay Estuary, located on the central coast of California, has experienced an estimated decline of 95% in occupied area (reduction of 344 acres to 20 acres) from 2008 to 2017 for reasons that are not yet definitively clear. One possible driver of degradation that has yet to be investigated is the role of herbicides from agricultural fields in the watershed that feeds into the estuary. Thus, the primary research goal of this project was to better understand temporal and spatial trends of herbicide use within the context of San Luis Obispo (

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45

Matuszewski, Damian Janusz. "Computer vision for continuous plankton monitoring." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/45/45134/tde-24042014-150825/.

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Plankton microorganisms constitute the base of the marine food web and play a great role in global atmospheric carbon dioxide drawdown. Moreover, being very sensitive to any environmental changes they allow noticing (and potentially counteracting) them faster than with any other means. As such they not only influence the fishery industry but are also frequently used to analyze changes in exploited coastal areas and the influence of these interferences on local environment and climate. As a consequence, there is a strong need for highly efficient systems allowing long time and large volume obse

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Spier, Chelsea L. "The fate and distribution of subsurface hydrocarbons released during the 2010 MC252 oil spill in deep offshore waters of the Gulf of Mexico." Scholarly Commons, 2012. https://scholarlycommons.pacific.edu/uop_etds/816.

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The explosion of the Deepwater Horizon oil platform on April 20, 2010 resulted in the second largest oil spill in history. In this study, the distribution and chemical composition of hydrocarbons within a 45 km radius of the blowout was investigated. A complete set of hydrocarbon data were acquired from the National Oceanic and Atmospheric Administration (NOAA) and from BP, including data from 16 research missions collected over eight weeks. The distribution of hydrocarbons was found to be more dispersed over a wider area in subsurface waters than previously predicted or reported. Several hydr

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Libralato, Giovanni <1979&gt. "Validation of ecotoxicological methods for wastewater monitoring to be discharged to marine-coastal and transitional environments: advanced technologies for wastewater treatment (SBR and MBR) as case studies." Doctoral thesis, Università Ca' Foscari Venezia, 2007. http://hdl.handle.net/10579/884.

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Deschamps, de Paillette Thierry. "Transmissions numériques sans-fil pour la surveillance environnementale en milieu sous-marin." Thesis, La Rochelle, 2020. http://www.theses.fr/2020LAROS023.

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La surveillance de l’environnement sous-marin nécessite le déploiement de capteurs et d’infrastructures dédiées dont le coût et l’impact sur la faune et la flore doivent être réduits. L’application cible vise des zones géographiques inférieures à 1km2 dans lesquelles les transmissions de flux vidéo et de mesures, prélevés par des capteurs immergés, doivent être réalisées sans-fil sur des distances supérieures à 10m avec un débit minimum de 80kbps pour des puissances d’émission d’une dizaine de Watts. Une étude comparative des méthodes de communication acoustiques, optiques et électromagnétique

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Weston, Johanna Nadia Jean. "Quantification of nitrate sources and sinks using a water quality network in Morro Bay Estuary, California." DigitalCommons@CalPoly, 2011. https://digitalcommons.calpoly.edu/theses/634.

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Using an instrumented water quality network in Morro Bay Estuary, California from 2007 to 2010 (15 min sampling frequency), this study addressed the two objectives of constructing a nitrate budget and assessing the influence of sampling frequency on water quality parameters. These two objectives led to the submission of an original report of research (Appendix A) and a note (Appendix B) to peer-reviewed journals. The first objective was to characterize the high spatial and temporal variation in physical parameters and nitrate concentrations and to construct a nitrate budget quantifying source

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Plot, Virginie. "Caractéristiques maternelles, performances et stratégies de reproduction des tortues marines de Guyane." Phd thesis, Université de Strasbourg, 2012. http://tel.archives-ouvertes.fr/tel-00867096.

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Les organismes font face à des compromis entre leur reproduction, leur maintenance et leur survie, dont découlent des stratégies adaptatives énergétiques, comportementales et écologiques.Ce travail de thèse propose de préciser les stratégies de reproduction chez la tortue luth Dermochelys coriacea nidifiant en Guyane. Nous avons étudié les caractéristiques maternelles, les performances de reproduction et les potentiels liens existants entre la migration et la reproduction chez une population d'individus d'identité connue, suivis grâce à un suivi longitudinal original combinant biométrie, physi

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