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Dissertations / Theses on the topic 'Oceanographic monitoring'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Rojas, Mendoza Jorge Enrique. "Modelling and essential control of an oceanographic monitoring remotely operated underwater vehicle." Master's thesis, Pontificia Universidad Católica del Perú, 2017. http://tesis.pucp.edu.pe/repositorio/handle/123456789/9516.

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Ocean pollution and contamination of the water are serious problems because of its rapid increase and spread, having a negative effect on people, animals and the environment. Due to this, new technologies to monitor and measure environmental parameters are being developed. Remotely Operated Underwater Vehicles (ROVs) have become a commonly used robotic platform in oceanographic monitoring and analysis. The ROVBWSTI, designed by Fraunhofer IOSB-AST Institute, is an underwater modular vehicle capable of fulfilling numerous tasks, especially in the area of environmental sensoring. The moti

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2

Ojo, Temitope O. "Development of environmental and oceanographic real-time assessment system for the near-shore environment." Texas A&M University, 2003. http://hdl.handle.net/1969.1/3875.

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The coupling of real-time measurements and numerical models will be important in overcoming the challenges in environmental and oceanographic assessments in surface waters. Continuous monitoring will take advantage of current state-of-the-art in sensor development, remote sensing technology. The numerical modeling tools available exist in many different forms and varying levels of complexity from depth integrated one-dimensional (1-D) models to full three-dimensional (3-D) models. Common to all are the constraints and forcing required in driving the models. These include hydrodynamic and barom

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3

Millegård, Markus. "Mercury concentration in Baltic herring, Clupea harengus, coupled to abiotic environmental factors : A study using monitoring data." Thesis, Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:sh:diva-19515.

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Earlier studies on the relationship between mercury concentration in fish – or alternatively bioavailability of mercury in aquatic systems – and different abiotic oceanographic factors such as water temperature, pH and salinity, have shown that such associations often exist. The results are not always consistent between studies, however. The aim of this study is to investigate if this type of relationships can be established in Baltic herring, Clupea harengus, with the use of temporal monitoring data from the northern Bothnian Bay (northern Sweden), compiled within Swedish monitoring programm

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4

Chan, Ting. "Analytical methods for power monitoring and control in an underwater observatory /." Thesis, Connect to this title online; UW restricted, 2007. http://hdl.handle.net/1773/6053.

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5

Jakuba, Michael Vavrousek 1976. "Stochastic mapping for chemical plume source localization with application to autonomous hydrothermal vent discovery." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/38931.

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Thesis (Ph. D.)--Joint Program in Oceanography/Applied Ocean Science and Engineering (Massachusetts Institute of Technology, Dept. of Mechanical Engineering; and the Woods Hole Oceanographic Institution), 2007.<br>Includes bibliographical references (p. 313-325).<br>This thesis presents a stochastic mapping framework for autonomous robotic chemical plume source localization in environments with multiple sources. Potential applications for robotic chemical plume source localization include pollution and environmental monitoring, chemical plant safety, search and rescue, anti-terrorism, narcotic

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6

Scarfe, Bradley Edward. "Oceanographic Considerations for the Management and Protection of Surfing Breaks." The University of Waikato, 2008. http://hdl.handle.net/10289/2668.

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Although the physical characteristics of surfing breaks are well described in the literature, there is little specific research on surfing and coastal management. Such research is required because coastal engineering has had significant impacts to surfing breaks, both positive and negative. Strategic planning and environmental impact assessment methods, a central tenet of integrated coastal zone management (ICZM), are recommended by this thesis to maximise surfing amenities. The research reported here identifies key oceanographic considerations required for ICZM around surfing breaks including

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7

Hunter-Cevera, Kristen Rachell. "Population dynamics and diversity of Synechococcus on the New England shelf." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/92591.

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Thesis: Ph. D., Joint Program in Oceanography/Applied Ocean Science and Engineering (Massachusetts Institute of Technology, Department of Biology; and the Woods Hole Oceanographic Institution), 2014.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from PDF student-submitted version of thesis. "September 2014."<br>Includes bibliographical references (pages 191-201).<br>Synechococcus is a ubiquitous marine primary producer. Our understanding of the factors that determine its abundan

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8

Downing, Andrew. "High frequency acoustic monitoring of suspensions of marine sediment." Thesis, University of East Anglia, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.332319.

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9

Woolfe, Katherine F. "Passive acoustic monitoring of the deep ocean using ambient noise." Diss., Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/53910.

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In the ocean, changes in the speed of sound can be related to changes in water temperature. By leveraging this relationship, acoustic methods – namely acoustic tomography- have been used to monitor temperature changes in the deep ocean for the purposes of providing inputs to climate change models. Traditionally, these acoustic methods involve loud, active sound sources which can be logistically challenging to operate and have been criticized for potentially disturbing marine animals. Therefore, this work demonstrates a passive acoustic method - previously only used in shallow water for short m

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10

Teferle, Felix Norman. "Strategies for long-term monitoring of tide gauges using GPS." Thesis, University of Nottingham, 2003. http://eprints.nottingham.ac.uk/10027/.

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Changes in mean sea (MSL) level recorded relative to tide gauge benchmarks (TGBM) are corrupted by vertical land movements. Accurate estimates of changes in absolute sea level, require these MSL records to be corrected for ground level changes at tide gauge sites. For more than a decade, the Global Positioning System (GPS) has been used to determine positions of TGBMs and to monitor their position changes, i.e. station velocities, over time in the International Terrestrial Reference System (ITRS). This was initially carried out by episodic GPS campaigns and later on by continuous GPS (CGPS) or

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11

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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12

Mtetandaba, Aphiwe. "The use of operational harmful algal bloom monitoring systems in South Africa to assess long term changes to bloom occurrence & impacts for aquaculture." Master's thesis, Faculty of Science, 2021. http://hdl.handle.net/11427/33842.

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The south coast of South Africa is a very dynamic, productive, high energy environment and is considered to be a generally challenging setting for in-water aquaculture. One of the largest environmental threats to aquaculture are harmful algal blooms (HABs), a natural ecological phenomenon often accompanied by severe impacts on coastal resources and local economies. There is a wide variety of potentially harmful blooming species in the region, with impacts resulting from both toxicity and the negative effects associated with high biomass. While HABs are fairly well documented around the souther

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13

Gunadharma, Gautama Budhi. "Oil-spill monitoring in Indonesia." Thesis, Ecole nationale supérieure Mines-Télécom Atlantique Bretagne Pays de la Loire, 2017. http://www.theses.fr/2017IMTA0036/document.

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L'Indonésie, l’une de plus grands archipels, a été menacé avec la pollution provenant de la marée noire. Le gouvernement d’Indonésie en coopération avec le gouvernement Français a développé un système d'observation de l'océan par satellite afin de supporter de développement durable. Ce système est intégré dans les systèmes d'océanographie opérationnelle dans le cadre du projet de développement des infrastructures de l'océanographie spatiale (INDESO). Le contexte de cette thèse est dans le cadre du projet INDESO notamment dans applications d’INDESO pour suivre des déversements de pétrole dans l

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14

Heslop, Emma. "Unravelling high frequency and sub-seasonal variability at key ocean circulation 'choke' points : a case study from glider monitoring in the western Mediterranean sea." Thesis, University of Southampton, 2015. https://eprints.soton.ac.uk/375360/.

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A quiet revolution is taking place in ocean observations: in the last decade new multiplatform ocean observatories have been progressively implemented in forward looking countries with ocean borders of economic and strategic importance. These developments are designed to fill significant gaps in our knowledge of ocean state and ocean variability through long-term science and society led monitoring. These new ocean observatories are now delivering results, not only the headline results of single issue experiments, but careful and systematic improvements in our knowledge of ocean variability, an

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15

Joodaki, Saba. "Application of the Reflection SeismicMethod in Monitoring CO2 Injection in aDeep Saline Aquifer in the Baltic Sea." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-200179.

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Time-lapse reflection seismic methods have proven effective fordetecting and monitoring the injection and spreading of geologicallystored CO2. These methods are based on interpreting changes in themedia’s elastic properties that result from replacing the native salinewater by the injected CO2, which in turn affects the seismic velocitiesof the media. Since applications of these methods in the field areexpensive, and the interpretation process is time consuming, pre-studyinvestigations should be done in order to determine whether or notreflection seismic surveys can successfully be applied to m

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16

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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17

Henning, Marcy. "Highly Streamlined PCR-Based Genetic Identification of Carcharhinid Sharks (Family Carcharhinidae) for Use in Wildlife Forensics, Trade Monitoring, and Delineation of Species Distributions." NSUWorks, 2005. http://nsuworks.nova.edu/occ_stuetd/117.

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An increase in worldwide industrialized shark fisheries resulting from the growing demand for shark products, especially shark fins in Asian markets, as well as high levels of bycatch mortality associated with multi-species fisheries have raised suspicions of substantial declines in global shark populations. Due to varying responses by individual species to fishing pressure, it has become necessary to manage sharks on a species-specific basis, which requires the collection of more accurate catch and trade data. The accumulation of such data is hindered, however, by difficulties in identifying

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18

Louw, Gavin Shaun. "Monitoring the dynamics of the Agulhas Current System off Port Edward, Kwazulu-Natal." Thesis, Cape Peninsula University of Technology, 2014. http://hdl.handle.net/20.500.11838/2032.

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Thesis submitted in fulfilment of the requirements for the degree Master of Technology: Oceanography in the Faculty of Applied Sciences at the Cape Peninsula University of Technology<br>In order to validate remote sensing products and to provide data for model assimilation, a real-time monitoring line consisting of three moorings was deployed across the Agulhas Current off Port Edward, South Africa. This deployment formed part of a Technology and Human Resource for Industry Programme (THRIP) funded initiative to develop a real-time mooring system capable of measuring ocean parameters in the

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19

Larson, Benjamin Isaac. "Watching the world sweat : development and utilization of an in-situ conductivity sensor for monitoring chloride dynamics in high temperature hydrothermal fluids at divergent plate boundaries /." Thesis, Connect to this title online; UW restricted, 2008. http://hdl.handle.net/1773/10994.

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20

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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21

Nilsson, Jenny A. U. "On methods for estimating oceanic flow." Doctoral thesis, Stockholm University, Department of Meteorology, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-7343.

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<p>The aim of this thesis was to estimate and possibly quantify ocean flow by utilizing conventional and novel observational methods as well as model results. Motionally induced voltages, from a cable-based observational system in the Baltic Sea, were analysed to determine their utility for ocean monitoring. The data set was examined as regards the influence of single- and multi-layer flow. Correlation analyses undertaken in the first study showed that the geoelectric installation is capable of providing good estimates of the net flow across the Visby-Västervik transect. The second study focus

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22

Hayes, Nicole K. "A characterization of a Southeast Florida stony coral assemblage after a disease event." Thesis, NSUWorks, 2019. https://nsuworks.nova.edu/occ_stuetd/512.

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Coral reefs have declined globally due to anthropogenic stressors increasing the frequency and severity of bleaching and disease events. In 2014, a stony coral tissue loss disease (SCTLD) outbreak occurred off the coast of southeast Florida and subsequently spread throughout the region. Data collected by the Southeast Florida Reef Evaluation and Monitoring Project (SECREMP) were used to examine the regional impacts of the disease event on the Southeast Florida stony coral assemblage. A long-term annual monitoring project, SECREMP samples permanent sites along the Southeast Florida Reef Tract (

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23

Cuyler, Erin E. "Calibration-free Spectrophotometric Measurements of Carbonate Saturation States in Seawater." Scholar Commons, 2017. http://scholarcommons.usf.edu/etd/7011.

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This work describes efforts to improve methodologies and instrumentation for investigation of the marine CO2 system. In the first section of my thesis, a method was developed that provides simple, calibration-free measurements of seawater carbonate saturation states (Ωspec) based solely on the use of a laboratory spectrophotometer. Measurements of pH are made in paired optical cells, one with and one without added nitric acid. The amount of added nitric acid is determined through the direct proportionality between nitrate concentration and UV absorbance. After an initial cal

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24

Goergen, Elizabeth. "Population dynamics of the threatened staghorn coral, Acropora cervicornis, and the development of a species-specific monitoring protocol." Diss., NSUWorks, 2018. https://nsuworks.nova.edu/occ_stuetd/471.

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Historically, Acropora cervicornis was found in high densities on many Caribbean, Florida, and Gulf of Mexico reefs. A disease outbreak in the late 1970s and 80s caused up to 99% loss of A. cervicornis cover at some sites, leaving populations sparsely distributed throughout its range and typically found as isolated colonies. Even though populations are depauperate causing a decrease in sexual reproduction, its fast growth rate and ability to reproduce through asexual fragmentation affords this species the potential for quick recovery and population growth. However, limited to no natural recove

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25

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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26

Abbas, Mohd Manzar. "Developing Ocean Color Algorithm using Moderate Resolution Imaging Spectroradiometer (MODIS) Sensor for Shallow Coastal Water Bodies." FIU Digital Commons, 2018. https://digitalcommons.fiu.edu/etd/3733.

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This study analyses the spatial and temporal variability of chlorophyll-a in Chesapeake Bay; assesses the performance of Ocean Color 3M (OC3M) algorithm; and develops a novel algorithm to estimate chlorophyll-a for coastal shallow water. The OC3M algorithm yields an accurate estimate of chlorophyll-a concentration for deep ocean water (RMSE=0.016), but it failed to perform well in the coastal water system (RMSE=23.17) of Chesapeake Bay. A novel algorithm was developed which utilizes green and red bands of the Moderate Resolution Imaging Spectroradiometer (MODIS) sensor. The novel algorithm der

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Cockrell, Marcy Lynn. "Spatial Dynamics and Productivity of a Gulf of Mexico Commercial Reef Fish Fishery Following Large Scale Disturbance and Management Change." Scholar Commons, 2018. https://scholarcommons.usf.edu/etd/7611.

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The Gulf of Mexico commercial reef fish fishery has experienced significant management changes and disturbance in recent years, including transitioning two major fisheries from a traditional open access system into a limited entry individual fishing quota (IFQ) system in 2007 and 2010. Also in 2010, the Deepwater Horizon oil spill (DWH) released an estimated 4.9 million barrels of oil into the Gulf (~206 million U.S. gallons), and is still the largest U.S. environmental disaster to date. Emergency fishing closures initiated shortly after the oil spill began were successful in keeping tainted s

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28

Bouffaut, Léa. "Detection and classification in passive acoustic contexts : application to blue whale low-frequency signals Passive stochastic matched filter for Antarctic blue whale call detection, in The Journal of the Acoustical Society of America 144 (2), 2018 Baleen whale distribution and seasonal occurrence revealed by an ocean bottom seismometer network in the Western Indian Ocean, in Deep Sea Research Part II: Topical Studies in Oceanography 161, March 2019." Thesis, Brest, 2019. http://www.theses.fr/2019BRES0057.

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L’analyse des grands volumes de données générés par la surveillance par acoustique passive long-terme et continue des baleines bleues (BW) est améliorée par la détection automatisée des signaux d’intérêt. Le travail présenté dans cette thèse s’attaque au problème de la détection et classification de signaux stéréotypés dans un contexte passif basse fréquence où les signaux sont modifiés par le canal de propagation, bruités et où le SNR varie continuellement. Les méthodes développées sont appliquées à des enregistrements issus d’OBS déployés dans l'océan Indien occidental.Premièrement, le filtr

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29

Skoog, Peter, and Henrik Bodin-Sköld. "Nutrients and runoff in a small catchment during spring 2010." Thesis, Linköping University, Linköping University, Department of Water and Environmental Studies, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-57611.

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<p>Eutrophication is an increasing problem in the Baltic Sea and is caused by an excess of nutrients in the water which are primarily transported with the runoff from cultivated land. The peninsula Vikbolandet in Östergötland is dominated by arable land and has stream outflows to the bays of Bråviken and Slätbaken. In this study five streams of Vikbolandet have been sampled during the spring flood period with the aim of connecting concentrations of nutrients in the streams with turbidity and runoff in the catchment. This analysis has then been related to the land use in the small catchment of

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30

Waldman, Alanna D. "Spatial and temporal trends in the Xestospongia muta (giant barrel sponge) population on the Southeast Florida Reef Tract." Thesis, NSUWorks, 2019. https://nsuworks.nova.edu/occ_stuetd/514.

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Xestospongia muta, the giant barrel sponge, is a key component of coral reef benthic communities in Southeast Florida and the Caribbean. Xestospongia muta increases habitat complexity and stability, and filters large volumes of water, enhancing water quality and facilitating nutrient cycling. Therefore, it is important to investigate trends in the X. muta population on Southeast Florida reefs in response to anthropogenic stressors, changing environmental conditions and acute disturbances and how these events affect its ecological role in the benthic community. This study identified trends in X

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31

Comeau, William Joseph. "Design specifications of an incoherent pulsed doppler sonar instrument for monitoring hydrothermal vent characteristics." 1990. http://catalog.hathitrust.org/api/volumes/oclc/21062340.html.

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32

Mullins, Ruth Louise. "Coastal Hypoxia on the Texas Shelf: An Ocean Observing and Management Approach to Improving Gulf of Mexico Hypoxia Monitoring." Thesis, 2013. http://hdl.handle.net/1969.1/149543.

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A combination of in situ sampling and real-time ocean observations was used to investigate the processes responsible for the formation and the areal extent of Texas coastal hypoxia from 2002 to 2011. In situ sampling, real-time mooring and buoy observations, and multivariate statistical modeling were used to investigate the physical processes driving hypoxia formation. Geostatistical interpolation (ordinary kriging) models were tested to compare the differences in annual hypoxia area on the Texas shelf. Results from these two sections were integrated into recommendations for improving feder

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33

"Single cell RT-qPCR based ocean environmental sensing device development." Doctoral diss., 2013. http://hdl.handle.net/2286/R.I.20927.

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abstract: This thesis research focuses on developing a single-cell gene expression analysis method for marine diatom Thalassiosira pseudonana and constructing a chip level tool to realize the single cell RT-qPCR analysis. This chip will serve as a conceptual foundation for future deployable ocean monitoring systems. T. pseudonana, which is a common surface water microorganism, was detected in the deep ocean as confirmed by phylogenetic and microbial community functional studies. Six-fold copy number differences between 23S rRNA and 23S rDNA were observed by RT-qPCR, demonstrating the moderate

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34

Sigrell, Tone. "Development of monitoring program for water safety in small-scale water treatment plants in rural areas of Ecuador." Thesis, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-349791.

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Globally a major health concern according to the World health organization (WHO, 2011) is gastro-intestinal infections caused by fecally contaminated water. The access to drinking water has increased due to international efforts, however the long-term sustainability and safety of the water accessed have gained criticism, and many water sources have proven to be both contaminated (UN, 2016) and badly managed (WHO, 2016a). This thesis aims to design a monitoring program for small-scale water treatment in order to make the water supply sustainable in terms of providing safe water in a long-term

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Teffer, Amy K. "Heavy Metal Food Chain: Relating Feeding Ecology and Mercury Bioaccumulation in Southern New England's Top pelagic Predators." 2012. https://scholarworks.umass.edu/theses/956.

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Mercury accumulation of upper trophic level marine fishes is a growing concern for human consumers. Diet is the primary source of mercury bioaccumulation in both fish and humans and yet remains unexamined in many intensely fished regions such as southern New England (SNE). The feeding ecology and mercury concentrations of recreationally caught albacore (Thunnus alalunga) and yellowfin (T. albacares) tunas, shortfin mako (Isurus oxyrinchus) and common thresher (Alopias vulpinus) sharks and dolphinfish (Coryphaena hippurus) were evaluated. Important prey were identified and also measured for tot

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Chesney, Tanya A. "A cooperative effort to track Humboldt squid invasions in Oregon." Thesis, 2012. http://hdl.handle.net/1957/35855.

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Interannual variability of Humboldt squid (Dosidicus gigas) occurrence in the northern California Current System is largely unknown. In Oregon, the distribution of this versatile predator and what is influencing their range expansion from Mexico is poorly understood due to the recent nature of their "invasion" and a lack of monitoring. Humboldt squid are large predators that have the potential to affect ecosystem structure and fisheries because of their high-energy demands and ability to exploit a variety of oceanographic conditions and prey sources. Developing baseline distribution informatio

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