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Dissertations / Theses on the topic 'Fish pond water'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Malone, Caroline E. ""Sea Water Fish in a Freshwater Pond:" An Institutional Approach to Understanding Cooperative Scarcity in the United States." Scholarship @ Claremont, 2014. http://scholarship.claremont.edu/scripps_theses/499.

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There is remarkable cooperative organization scarcity in the United States. Particularly in the credit union and worker cooperative sectors, this scarcity is not satisfactorily explained by neo-classical economic models that assume competitive conditions and profit-maximizing organizations. This paper supplements the conventional economic understandings of credit union and worker cooperative scarcity with an institutional analysis. Mechanisms of coercive, mimetic, and normative institutional isomorphism developed in DiMaggio and Powell’s theory of organizational isomorphism are applied to prov

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2

Edwards, Paula Kay. "The Correlation of the Concentration of Selected Metals Determined in Water and Fish Samples from a Public Pond." Digital Commons @ East Tennessee State University, 2010. https://dc.etsu.edu/etd/1774.

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The concentrations of heavy metals (Cd, Cu, Fe, Ni, Pb, Zn) were measured in water, and fish samples caught from the pond at Fishery Park in Unicoi County, TN. The water samples were collected once a week for 8 weeks. The amounts of metals in the muscle tissues, gill, and liver of the two fish species were measured. This was to determine if any correlation exists between the metal contents in water and those in the fish samples. The concentration ranges for the heavy metals found in the water samples are as follows: Zn 0.04-0.13; Cu, 0.00-0.00; Pb, 0.00-0.59; Cd, 0.0067-0.0071; Fe, 0.208-0.512

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3

Nelson, Elizabeth. "The presence of amphibian ranavirus in Virginia warm water fish hatchery ponds." VCU Scholars Compass, 2009. http://scholarscompass.vcu.edu/etd/84.

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Amphibian declines have been occurring world wide over the past several decades. Infectious disease and environmental changes have been implicated as the causative agents in these declines. Fish stocking from hatcheries provides a unique opportunity for organisms, including infectious diseases, to travel over long distances. Ranavirus was previously found in two ponds at Harrison Lake National Fish Hatchery in Charles City County, Virginia. Therefore, the primary objective of this study was to determine if ranavirus is present in tadpoles from four warm water fish hatcheries in Virginia. A sec

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4

Lu, Zhimin. "Modeling of water temperature, dissolved oxygen, and fish growth rate in stratified fish ponds using stochastic input variables /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2003. http://uclibs.org/PID/11984.

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5

Filbrun, Jesse Everett. "An Ecological Approach to Feed Management in Fish Rearing Ponds." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1366038927.

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6

Kong, Kai Yip. "Risk assessment of organochlorine pesticides and polycyclic aromatic hydrocarbons in fish collected from fish ponds in the Pearl River Delta." HKBU Institutional Repository, 2004. http://repository.hkbu.edu.hk/etd_ra/531.

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7

Wahab, Md Abdul. "The ecology of benthic macro-invertebrates in earthen trout ponds at Howietoun, central Scotland." Thesis, University of Stirling, 1986. http://hdl.handle.net/1893/28840.

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An Investigation Into the ecology of benthic macro-invertebrates in earthen ponds subjected to intensive trout (Salmo trutta L.) culture practices at Howletoun, Central Scotland, was conducted between May 1984 and January 1986. Soil and water quality, seasonal changes in benthos, its role in the trout diet and the Interaction between fish and benthos were studied. Pond benthos mainly comprised 6 major groups including Oligochaeta. (10 species), Chironomldae (18 species), Molluscs and Hirudinea (2 species each) and an asellid and a sialid species. Oligochaeta formed 78 to 90% of benthic fauna,

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8

Fortune, Shelby E. "Evaluation of automated, manual and constant aeration practices in managing of dissolved oxygen for channel catfish farming in earthen ponds." Master's thesis, Mississippi State : Mississippi State University, 2008. http://library.msstate.edu/etd/show.asp?etd=etd-07182008-143119.

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9

Santos, Emanuel Soares dos. "Cultivo do peixe ornamental MolinÃsia como alternativa para o uso de esgoto tratado na piscicultura." Universidade Federal do CearÃ, 2012. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=7983.

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AssociaÃÃo TÃcnico-CientÃfica Eng.Â Paulo de Frontin<br>Avaliou-se a sustentabilidade da utilizaÃÃo de esgotos domÃsticos tratados na criaÃÃo do peixe ornamental molinÃsia, observando o desempenho zootÃcnico, a capacidade de adaptaÃÃo deste ao meio e o rendimento econÃmico desta modalidade de cultivo. Foram testados trÃs tratamentos: ET â abastecido com esgoto tratado; ED â abastecido com esgoto diluÃdo e Ãgua bruta em iguais proporÃÃes; AB â abastecido com Ãgua bruta. Por meio dos resultados dos parÃmetros fÃsico-quÃmicos, observou-se que o esgoto domÃstico tratado em lagoas de estabilizaÃÃo

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10

Liang, Chia-Hao, and 梁家豪. "Development of the Fixed Point Water Control System for Fish Pond." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/12081606090441661206.

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碩士<br>建國科技大學<br>自動化工程系暨機電光系統研究所<br>99<br>As the sensory probe of the water quality detecting &; monitoring system of the traditional aquaculture pond has been immersed in the pond for such a long time, microorganisms will adhere to its sensing electrode very easily. For that, the test results and the life time of the sensory probe will be affected a lot consequently. This research tries to establish an aquaculture pond automated fixed point water quality detecting &; monitoring system along with the automatically cleaning for the sensory probe and remedial measures as well. The compulsory aera

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11

Shie, Yu-Cheng, та 謝育成. "Study on the Improvement of Water Quality and Sediment Environment of Fish Culture Pond by Fulvic Acid Peat Activated Carbon and δ-MnO2". Thesis, 2010. http://ndltd.ncl.edu.tw/handle/64665645223824031011.

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碩士<br>朝陽科技大學<br>環境工程與管理系碩士班<br>98<br>Maintain a good pond fish culture environment is crucial for growing healthy fish to achieving satisfactory production for improving culture efficiency. It depends on the water quality conditioning and culture environment such as pond sediment properties. In this study sediments were collected from Shih-Ban fish, shrimp and Wu fish culture fishery ponds in southern part of Taiwan to investigate the effect of water quality and sediment environment of fishery ponds by adding fulvic acids (FA) extracted from peat composite material or activated carbon (AC) o

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12

FREIDINGER, Jan. "Kvalita vody odtékající z rybníků v průběhu vypouštění a výlovu se zřetelem na bilanci fosforu a nerozpuštěných látek." Master's thesis, 2016. http://www.nusl.cz/ntk/nusl-251605.

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The topic of this thesis is the impact of fish pond harvest on water quality especially on concentration of suspended solids and phosphorous. Goal of the study is to contribute to ongoing discussion about carp aquaculture's role in fresh water pollution. Sampling was carried out in five carp ponds in the Třeboňsko Protected Landscape Area. Main monitored parameters were concentration of suspended solids and total phosphorous during pond drainage and fish harvest.Results of the study confirmed very negative impact of fish harvest on water quality in recipient water.

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13

Tabaro, Simon Rukera. "Optimisation of an innovative system of sustainable production in Rwanda : the integrated rabbit-fish-rice system." Thesis, 2011. http://hdl.handle.net/10413/8590.

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Population escalation in the developing world has been associated with increased poverty, food insecurity and environmental degradation. The situation in Rwanda, with 2.82% annual population increase is no exception. The objective of the present study was to investigate an innovative integrated system of sustainable production suitable for resource-poor rural farmers, the Integrated Rabbit–Fish–Rice (IRFR) system. The study was targeted towards contributing to Rwanda government’s goals of eradicating extreme poverty and hunger, enhancing food security as well as abating environmental degradati

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14

ŠRÁMEK, Pavel. "Hodnocení stability rybničního ekosystému v Národní přírodní rezervaci Řežabinec." Master's thesis, 2014. http://www.nusl.cz/ntk/nusl-181009.

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The first part is characterized by a pond ecosystem and National Nature Reserve Řežabinec in terms of its historical development and creation. Are mentioned methods , the method and system of protection of the site. The paper describes a method of fish farming during the period of the individual plans of care farming in the last five years and the water conditions in the area . The ecosystem is assessed on the basis of available data in the literature to me In our own work we focus on monitoring water chemistry and state recovery tank , especially in terms of development and biomass of zooplan

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15

HSU, LING-CHUN, and 許伶均. "Age and growth of the toothed pony fish, Gazza minuta, in the waters off southwestern Taiwan." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/vgz384.

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碩士<br>國立高雄海洋科技大學<br>漁業生產與管理研究所<br>105<br>The age and growth of the toothed pony fish (Gazza minuta) were investigated by examining the rings of otolith of fish in the waters off southwestern Taiwan. A total of 483 specimens ( 220 female, 247 male and the sex of 16 specimens was not determined) caught by otter trawlers, were collected monthly from October 2015 to October 2016 at the Ke-zi-liao fishing port, Kaohsiung City. The relationships between the body weight (BW) and the standard length (SL) for females and males were no significantly different and combined as BW=0.000136*SL2.727 ( r2=0.

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16

Lin, Fang-Yu, and 林芳妤. "Reproductive biology of the toothed pony fish Gazza minuta in the coastal waters off southwestern Taiwan." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/44118701692614668477.

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碩士<br>國立高雄海洋科技大學<br>漁業生產與管理研究所<br>101<br>This study aimed to investigate the reproductive biology of the toothed pony fish, Gazza minuta, in the coastal waters off southwestern Taiwan. A total of 747 specimens (386 females and 361 males) were collected monthly between October 2011 and September 2012 at Jhong-Yun fishing port, southwestern Taiwan. Based on the histological examination, the oocyte development can be categorized into eight stages and the ovary development into three stages. The spawning season of G. minuta can be found from January to October, and have peaks in March to May. It i

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17

ČEJNOVÁ, Monika. "Plankton malých návesních rybníků." Master's thesis, 2016. http://www.nusl.cz/ntk/nusl-253121.

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The object of my thesis was to document the basic characteristics of four small ponds. Register seasonal changes in the occurrence of selected zooplankton groups and compare individual ponds among them. Then evaluate management on ponds and assess the possible impact on the formation of plankton. These results were then compared with the current situation on standard economic ponds. In this study, I observed three private ponds and local pond, which were located in the cadastral area Lodhéřov. From the results it is evident, that the zooplankton development was in private ponds very slow, whil

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18

KOHELOVÁ, Hana. "ZJIŠTĚNÍ EKOLOGICKÝCH NÁROKŮ VYBRANÝCH PLANKTONNÍCH ŘAS A SINIC Z ŘÁDU NOSTOCALES. SVĚTELNÁ A TEPLOTNÍ OPTIMA PRO DOMINANTNÍ DRUHY VODNÍCH KVĚTŮ RYBNÍKŮ A PŘEHRAD V ČESKÉ REPUBLICE." Master's thesis, 2008. http://www.nusl.cz/ntk/nusl-49962.

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This thesis is aimed on cyanobacterial water blooms. It deals with the composition of cyanobacterial water blooms, factors which cause its emergence, effect it has on environment, termination of cyanobacterial bloom and ways of how to restrict it. My thesis contains the chapter devoted to the cyanobacterial bloom characteristic, which gives them advantage over other organisms in plankton and over other cyanobacteria as well. It also contains general description of fishponds and reservoirs and locality description (fishpond Svět and Rod, water reservoir Římov, Jihočeský kraj), which were the so

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19

CHMELICKÝ, Petr. "Chov ryb v rybnících zatížených komunálními vodami." Master's thesis, 2017. http://www.nusl.cz/ntk/nusl-317528.

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In August 2014 a total die-off of fish stock occurred in Záhumenní velký, a pond with a surface area of 5.85 ha. The investigation of the fish kill revealed that the Jabkenice WWTP located above the pond area had discharged water of inappropriate quality (N-NH4+ -99.3 mg/l-1) into the pond. This event resulted in the monitoring of physical and chemical parameters of water quality, zooplankton sampling and measuring of growth dynamics of fish stock by using control reduction fishing. The survey conducted in 2015 studied three different ponds (Ohrada 0.85 ha, Záhumenní velký 5.85 ha and Vlkava 2

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