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Dissertations / Theses on the topic 'Chlorophyll-a distribution'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Ault, Danylle N. "Temporal and Spatial Distribution of Chlorophyll on the West Florida Shelf." Scholar Commons, 2006. http://scholarcommons.usf.edu/etd/3864.

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The West Florida Shelf (WFS), typically characterized as being oligotrophic, is one of the most productive continental shelves in the United States. In addition to supporting a large fishing industry, the WFS also supports high biomass blooms of the toxic dinoflagellate Karenia brevis. Because of the large ecological and economic impacts these blooms have on the area, the ECOHAB: Florida program was developed to gain a better understanding of red tides and their initiation, maintenance, and dispersal. This interdisciplinary program consisted of monthly cruises from June 1998 through December 2

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2

Sauzède, Raphaëlle. "Etude et paramétrisation de la distribution verticale de la biomasse phytoplanctonique dans l'ocean global." Thesis, Paris 6, 2015. http://www.theses.fr/2015PA066625/document.

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Les travaux présentés dans cette thèse concernent la paramétrisation de la distribution verticale de la biomasse et de la structure des communautés phytoplanctoniques dans l’océan global. Nous avons d’abord développé une méthode neuronale de calibration de la fluorescence en concentration en chlorophylle a ([Chl]) associée à la biomasse phytoplanctonique totale et à trois classes de taille de phytoplancton. Cette méthode, FLAVOR, a été entrainée et validée à l’aide une base de données de ~900 profils de fluorescence et de pigments mesurés pat HPLC. Une base de données globale de ~49000 profils

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3

Elahdab, Tarek. "Investigation Of Algae Distribution In Eymir Lake Using Site Measurements And Remotely Sensed Data." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/12607620/index.pdf.

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The aim of this study is to determine the distribution of Chla in Eymir Lake using remotely sensed data and in-situ data. The study was carried out in three phases<br>the first phase was taking ground real data from the lake for a 6-month period, secondly the remotely sensed satellite image was taken and analyzed, thirdly a correlation was obtained between the ground data and satellite image, and lastly mapping of the Chla in the lake was made. During the study also the change of the lake during the 6-month period was monitored. The results showed a great variation in the concentration of Chla

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4

Sauzède, Raphaëlle. "Etude et paramétrisation de la distribution verticale de la biomasse phytoplanctonique dans l'ocean global." Electronic Thesis or Diss., Paris 6, 2015. http://www.theses.fr/2015PA066625.

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Les travaux présentés dans cette thèse concernent la paramétrisation de la distribution verticale de la biomasse et de la structure des communautés phytoplanctoniques dans l’océan global. Nous avons d’abord développé une méthode neuronale de calibration de la fluorescence en concentration en chlorophylle a ([Chl]) associée à la biomasse phytoplanctonique totale et à trois classes de taille de phytoplancton. Cette méthode, FLAVOR, a été entrainée et validée à l’aide une base de données de ~900 profils de fluorescence et de pigments mesurés pat HPLC. Une base de données globale de ~49000 profils

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5

Yuzugullu, Onur. "Determination Of Chlorophyll-a Distribution In Lake Eymir Using Regression And Artificial Neural Network Models With Hybrid Inputs." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12612850/index.pdf.

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Chlorophyll-a is a parameter which can be used to understand the trophic state of water bodies. Therefore, monitoring of this parameter is required. Yet, distribution of chlorophyll-a in water bodies is not homogeneous and exhibits both spatial and temporal variations. Therefore, frequent sampling and high sample sizes are needed for the determination of chlorophyll-a quantities. This would in return increase the sampling costs and labor requirement, especially if the topography makes the location hard to reach. Remote sensing is a technology that can aid in handling of these difficulties a

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6

Komul, Bhavnah. "A pilot study of seasonal and interannual patterns in the distribution of chlorophyll α and temperature over three areas of the southwest Indian Ocean: northeast Madagascar, southeast Madagascar and the Mascarene Islands". Master's thesis, University of Cape Town, 2016. http://hdl.handle.net/11427/22842.

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Remotely sensed weekly MODIS data of chlorophyll α (Chl-α) concentration, sea surface temperature (SST) and satellite altimetry data of Absolute Dynamic Topography (ADT) and geostrophic velocities are used to examine the seasonal and interannual patterns in the Chl-α concentration and SST over three pilot study areas of the southwest Indian Ocean, namely Northeast Madagascar, Southeast Madagascar and Mascarene Islands. The weekly and monthly climatology and the weekly means of each variables are assessed using image displays and time series from 2003 to 2014. It is found that there is a season

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7

Hackett, Keith. "Statistical Analysis and Mechanistic Modeling of Water Quality: Hillsborough Bay, Florida." Scholar Commons, 2011. http://scholarcommons.usf.edu/etd/3139.

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Nutrient pollution has been identified as a significant threat to U.S. coastal and estuarine water quality. Though coastal and estuarine waters need nutrients to maintain a healthy, productive ecosystem, excess nutrients can lead to eutrophication. There are significant potential negative consequences associated with eutrophication, including loss of habitat, loss of economic activity, and direct threats to human health. Hillsborough Bay experienced eutrophication in the 1960s and 1970s due to a rapidly growing population and associated increases in nutrient pollution. These eutrophic cond

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8

Kide, Saïkou Oumar. "Analyse de la diversité et de la structuration spatio-temporelle des assemblages démersaux dans la zone économique exclusive mauritanienne." Thesis, Aix-Marseille, 2018. http://www.theses.fr/2018AIXM0085/document.

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La zone économique exclusive Mauritanienne est le siège d’upwelling et constitue une zone de transition où cohabitent des espèces d’affinités tempérée et tropicale. Pour comprendre le comportement spatio-temporel des assemblages démersaux du point de vue de leur composition, structuration, distribution de probabilité et diversité face aux préoccupations écologiques. Les facteurs abiotiques contribuent à la structuration des assemblages démersaux persistants au cours du temps. Les effets de la pêche étaient relativement faibles. Les trajectoires temporelles entre les assemblages et les conditio

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9

Kide, Saïkou Oumar. "Analyse de la diversité et de la structuration spatio-temporelle des assemblages démersaux dans la zone économique exclusive mauritanienne." Electronic Thesis or Diss., Aix-Marseille, 2018. http://www.theses.fr/2018AIXM0085.

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La zone économique exclusive Mauritanienne est le siège d’upwelling et constitue une zone de transition où cohabitent des espèces d’affinités tempérée et tropicale. Pour comprendre le comportement spatio-temporel des assemblages démersaux du point de vue de leur composition, structuration, distribution de probabilité et diversité face aux préoccupations écologiques. Les facteurs abiotiques contribuent à la structuration des assemblages démersaux persistants au cours du temps. Les effets de la pêche étaient relativement faibles. Les trajectoires temporelles entre les assemblages et les conditio

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10

Barboza, Tenório Márcio Murilo. "Les cyanobactéries pélagiques en milieu tropical oligotrophe : occurence, distribution et dynamique." Paris 6, 2006. http://www.theses.fr/2006PA066100.

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11

Hempel, Esther. "Controlling Factors Of Life Cycle And Distribution Of Chironomid Key Species In The Mesotrophic Saidenbach Reservoir." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2011. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-72141.

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In den Jahren 2005 bis 2010 erfolgte im Rahmen der Erarbeitung der vorliegenden Dissertationsschrift eine ökologische Untersuchung der Chironomidenfauna in der Talsperre Saidenbach (Sachsen, Erzgebirge). Drei Arten mit hoher Abundanz konnten bei der umfassenden Artenanalyse im Jahr 2005 ermittelt werden: Procladius crassinervis, P. choreus und Chironomus anthracinus. Zusätzlich wurde die Art C. plumosus aufgrund ihrer engen Verwandtschaft zu C. anthracinus in die Untersuchung einbezogen. Die Arbeit ist auf vier Schwerpunkte fokussiert, wobei die Larven und Puppen der vier Arten analysiert wurd

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12

Frazel, Denis William. "Aspects of Phytoplankton Chlorophyll A Carbon-Specific Growth Rates, and the Distributions of Chlorophyll A and Primary Productivity in Relation to Water Column Structure in the Eastern North Atlantic Ocean." NSUWorks, 1990. http://nsuworks.nova.edu/occ_stuetd/65.

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This dissertation consists of three chapters, two of which are presented in manuscript form. Chapter One is an introduction and review of the measurement of phytoplankton chlorophyll a carbon-specific growth rates. Chapter Two consists of the manuscript ASPECTS OF CHLOROPHYLL a CARBONSPECIFIC GROWTH RATE IN THE EASTERN NORTH ATLANTIC OCEAN. It has been formatted in accordance with the specifications of the oceanographic journal Marine Ecology Progress Series. In Chapter Two, an evaluation of the short-term kinetics of the labeling time of natural phytoplankton populations in different oceanic

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13

Tempera, Fernando. "Benthic habitats of the extended Faial Island shelf and their relationship to geologic, oceanographic and infralittoral biologic features." Thesis, University of St Andrews, 2009. http://hdl.handle.net/10023/726.

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This thesis presents a new template for multidisciplinary habitat mapping that combines the analyses of seafloor geomorphology, oceanographic proxies and modelling of associated biologic features. High resolution swath bathymetry of the Faial and western Pico shelves is used to present the first state-of-the-art geomorphologic assessment of submerged island shelves in the Azores. Solid seafloor structures are described in previously unreported detail together with associated volcanic, tectonic and erosion processes. The large sedimentary expanses identified in the area are also investigated an

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14

Schmull, Michaela. "Site factors determining epiphytic lichen distribution in a dieback affected spruce fir forest on Whiteface Mountain, New York." Doctoral thesis, [S.l.] : [s.n.], 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=965267318.

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15

Chen, Teh-Jui, and 陳德瑞. "Chlorophyll-a distribution of^^the southern Taiwan." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/59843250190436150975.

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16

Hsieh, Cheng-Hung, and 謝政宏. "A Study on the Temporal - Spatial Distribution of Turbidity and Chlorophyll in an Artificial Ecological Pond." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/20537546388812874086.

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碩士<br>國立屏東科技大學<br>水土保持系所<br>102<br>This study was focus on the measurements of, turbidity, chlorophyll concentration and water temperature in the artificial ecological pond. The experimental site was an upper flood detention and located in front of Jing-Se Lake, the comprehensive district of soil and water conservation of National Pingtung University of Science and Technology, Taiwan. There were fifteen measurements had performed from January 29, 2013 to June 10, 2014. All these results could provide references for the soil and water conservation of practice and maintenance. The results had sh

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17

Hung, Sung-Yu, and 洪崧寓. "Distribution and fluctuation of chlorophyll-a concentrations in the Taiwan Banks based on the satellite data." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/52532611821559867205.

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18

Hoffman, Judith Irene. "Spatial and temporal distribution of Keratella hiemalis in association with temperature, oxygen, chlorophyll-a and pH in Little Rock Lake, Wisconsin." 1993. http://catalog.hathitrust.org/api/volumes/oclc/28752002.html.

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19

Hempel, Esther. "Controlling Factors Of Life Cycle And Distribution Of Chironomid Key Species In The Mesotrophic Saidenbach Reservoir." Doctoral thesis, 2010. https://tud.qucosa.de/id/qucosa%3A25667.

Full text

Abstract:

In den Jahren 2005 bis 2010 erfolgte im Rahmen der Erarbeitung der vorliegenden Dissertationsschrift eine ökologische Untersuchung der Chironomidenfauna in der Talsperre Saidenbach (Sachsen, Erzgebirge). Drei Arten mit hoher Abundanz konnten bei der umfassenden Artenanalyse im Jahr 2005 ermittelt werden: Procladius crassinervis, P. choreus und Chironomus anthracinus. Zusätzlich wurde die Art C. plumosus aufgrund ihrer engen Verwandtschaft zu C. anthracinus in die Untersuchung einbezogen. Die Arbeit ist auf vier Schwerpunkte fokussiert, wobei die Larven und Puppen der vier Arten analysiert wurd

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20

Shieh, Yu-chan, and 謝育展. "A study of chlorophyll_a distribution influence by internal waves near Dongsha Atoll based on satellite images and hydrographic data." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/44664905461069432164.

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碩士<br>國立中山大學<br>海下科技暨應用海洋物理研究所<br>98<br>This thesis investigates the variation of the chlorophyll-a concentration near Dongsha Atoll derived from MODIS Aqua and Terra satellite images, and their relationship to physical environments including sea surface temperature, CTD water qualities, tides, currents and surface winds for the period 2005 to 2008. The results revealed that the seasonal variation of chlorophyll-a concentration was higher in the winter than in the summer, and had inverse relationship with sea surface temperature. The increased chlorophyll-a concentration was due to entrainme

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21

Gignac, Brassard Sabrina. "Les rôles relatifs de la prédation et des ressources sur la distribution verticale du zooplancton à travers un gradient de prédation des poissons dans les lacs boréaux." Thèse, 2020. http://depot-e.uqtr.ca/id/eprint/9727/1/eprint9727.pdf.

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