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Dissertations / Theses on the topic 'Freshwater biology'

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1

Kennaway, Gabrielle M. A. "The population biology of freshwater phytoplankton." Thesis, Bangor University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.236909.

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2

Tan, Thomas Ching-Jen. "Telomere biology in the freshwater planarian Schmidtea mediterranea." Thesis, University of Nottingham, 2011. http://eprints.nottingham.ac.uk/12308/.

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Freshwater planarian Schmidtea mediterranea is an emerging model for studying in vivo gene functions and regulation in native cell niches. The obligate asexual strain of this species reproduces by fission, in which succession of soma occurs without passing through the germline. To achieve this somatic immortality the somatic stem cells need to overcome the end replication problem. Therefore it can be hypothesised that somatic telomere maintenance in asexual S. mediterranea must possess a germ-like property, with which age-related erosions can be adequately repaired. In this PhD project, the te
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3

Miller, Cynthia Elizabeth. "Tributyltin resistance among freshwater sediment bacteria." The Ohio State University, 1993. http://rave.ohiolink.edu/etdc/view?acc_num=osu1346092511.

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4

Baker, Andrea Catherine. "Investigations into the molecular biology of the freshwater Cyanophages." Thesis, University of Leeds, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.421416.

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5

Wahlström, Katrin. "Sediment Requirements for Freshwater Pearl Mussel (Margaritifera margaritifera) Recruitment : Sedimentkraven för Rekrytering hos Flodpärlmussla (Margaritifera margaritifera)." Thesis, Karlstad University, Division for Environmental Sciences, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-571.

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<p>Abstract</p><p>The sediment requirements for freshwater pearl mussel (Margaritifera margaritifera) recruitment, in 18 rivers in the counties of Västra Götaland, Örebro, Värmland and Västmanland in Sweden, were investigated. The top 4 cm of sediment in the rivers was analysed in terms of size, distribution and organic compound within the fine sediment. The aims of the study were to determine whether there is a relation between sediment particle size compound and freshwater pearl mussel recruitment as well as between organic compound in fine sediment and recruitment of mussels. The study show
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6

Jiravanichpaisal, Pikul. "White Spot Syndrome Virus Interaction with a Freshwater Crayfish." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-5776.

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7

DeVaul, Sarah Bess. "Mixotrophy in Freshwater Foodwebs." Diss., Temple University Libraries, 2016. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/380959.

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Biology<br>Ph.D.<br>Environmental heterogeneity in both space and time has significant repercussions for community structure and ecosystem processes. Dimictic lakes provide examples of vertically structured ecosystems that oscillate between stable and mixed thermal layers on a seasonal basis. Vertical patterns in abiotic conditions vary during both states, but with differing degrees of variation. For example, during summer thermal stratification there is high spatial heterogeneity in temperature, nutrients, dissolved oxygen and photosynthetically active radiation. The breakdown of stratificati
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8

Wang, Naiming. "Modelling Phosphorus Retention in Freshwater Wetlands." The Ohio State University, 1996. http://rave.ohiolink.edu/etdc/view?acc_num=osu1382617535.

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9

Gustavsson, Ann. "Föryngring av stormusslor (Unionoida) i tre vattensystem i Västra Götalands län." Thesis, University of Skövde, School of Life Sciences, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-1056.

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<p>Storvuxna musslor i sötvatten (stormusslor) kan ha drabbats av en allvarlig tillbakagång i såväl Sverige som hela världen. Tidigare undersökningar i Sverige och andra delar av världen visar på en kraftig tillbakagång och brist på en fungerande föryngring hos arterna flodpärlmussla (Margaritifera margaritifera) och tjockskalig målarmussla (Unio crassus). I tidigare undersökningar i Sverige har fokus främst varit att försöka kartera arternas förekomst och utbredning, men inte dess föryngring. Syftet med denna studie är att undersöka föryngringen av samtliga arter stormusslor i vattensystemen
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10

Ilikchyan, Irina N. "Phosphonates Utilization in Marine and Freshwater Picocyanobacteria." Bowling Green State University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1229969527.

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11

Österling, Martin. "Ecology of freshwater mussels in disturbed environments." Doctoral thesis, Karlstad University, Faculty of Social and Life Sciences, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-734.

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<p>The number of species extinctions is increasing at an alarming rate. Long-lived freshwater mussels of the order Unionoida, which include a parasitic stage on a host fish, are highly threatened. Habitat degradation by turbidity and sedimentation is thought to be one major reason for their decline. The objective of this thesis was to examine recruitment patterns and identify the causes of the lack of recruitment in the threatened unionoid freshwater pearl mussel (Margaritifera margaritifera). In addition, I investigated the effects of turbidity on non-endangered dreissenid mussels, where turb
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12

Sigurdson, Wade Johannes. "Mechanosensitive ion channels in the freshwater snail, Lymnaea stagnalis." Thesis, University of Ottawa (Canada), 1990. http://hdl.handle.net/10393/5737.

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Mechano-sensitive ion channels in cells isolated from the heart and circumoesophageal ganglia of a freshwater snail (Lymnaea stagnalis) were characterized as K$\sp+$ selective and sensitive to changes in cell membrane tension. Using the technique of single-channel recording, stretch-activated K$\sp+$ (SAK) channels (30 pS in physiological saline) were shown to have complex permeation properties indicative of multi-ion channels. SAK channels were blocked by milli-molar quantities of quinidine or tetraethyl-ammonium and exhibited selectivity (Tl$\sp+ >$ K$\sp+ >$ Rb$\sp+ >$ Na$\sp+ >$ Li$\sp+$)
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13

Perry, James E. III. "Analysis of vegetation patterns in a tidal freshwater marsh." W&M ScholarWorks, 1991. https://scholarworks.wm.edu/etd/1539616806.

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Tidal freshwater wetlands represent a transitional wetland between tidal salt marshes and non-tidal wetlands. as such, they exhibit some of the vegetation characteristics of both systems. If the changes in the vegetation pattern favor the characteristics of one system over the other, the changes may be an indication of changes in the environmental conditions of the estuarine ecosystem that favors that system. Unfortunately, little is known of the temporal and spatial changes that occur in the vegetation patterns of tidal freshwater marshes of the mid-Atlantic coastal region. In 1987 a vegetati
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14

Neubauer, Scott C. "Carbon dynamics in a tidal freshwater marsh." W&M ScholarWorks, 2000. https://scholarworks.wm.edu/etd/1539616793.

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The sources and fates of carbon in a tidal freshwater marsh (Sweet Hall marsh; Pamunkey River, Virginia) were determined to understand the role that these marshes play with respect to estuarine carbon cycling. A carbon gas flux model, based on measured carbon dioxide and methane fluxes, was developed to calculate annual rates of macrophyte and microalgal photosynthesis and community and belowground respiration. Because carbon fluxes out of marsh sediments may underestimate true belowground respiration if sediment-produced gases are transported through plant tissues, gross nitrogen mineralizati
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15

Molin-Wilkinson, Andrew. "How can the Freshwater Pearl Mussel's (Margaritifera margaritifera) Situation Become Better in Lekhyttan." Thesis, Karlstad University, Faculty of Social and Life Sciences, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-1135.

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<p>Abstract</p><p>This study takes up a local issue in the village of Lekhyttan, where Johan Molin is concerned about the freshwater pearl mussels (Margaritifera margaritifera) situation. He is a landowner and wonders what the situation is for the mussels and what he himself possibly can do, to hopefully improve their situation.</p><p>This paper looks at the different aspects on why the mussels are distributed as they are in the stream and trying to understand why new recruitment is poor in the Lekhyttan Stream.</p><p>Dividing the area into two zones, east (that has a population of mussels) an
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16

Knackstedt, Kathryn Ann. "Rivers as Sources of Freshwater Ice-Nucleating Particles." Bowling Green State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1498766754881706.

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17

Bleackley, Natalie Anne. "Biology of common bully (Gobiomorphus cotidianus)." The University of Waikato, 2008. http://adt.waikato.ac.nz/public/adt-uow20080320.150044/index.html.

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18

Sanchez, Montelongo Jessica Lynn. "The Adaptive Evolution of Herbivory in Freshwater Systems." FIU Digital Commons, 2018. https://digitalcommons.fiu.edu/etd/3813.

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Herbivory is thought to be nutritionally inefficient relative to carnivory and omnivory. But, herbivory evolved from carnivory in many lineages, suggesting that there are advantages to eating plants. To understand the adaptive significance of the transition from carnivory to herbivory, I proposed five hypotheses for the adaptive evolution of herbivory and reviewed the current freshwater literature to identify conditions where eating plants might be adaptive over eating animals. I tested three of these ideas (Suboptimal Habitat, Heterotroph Facilitation, and Lipid Allocation) using the herbivor
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19

Raji, Aminu. "Studies on freshwater fishery of a city lake." Thesis, Cardiff University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.233768.

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20

Roznere, Ieva. "Health assessment of freshwater mussels using metabolomics." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1461065547.

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21

Taylor, A. P. "Magnetotactic bacteria and their biominerals /." St. Lucia, Qld, 2002. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe16108.pdf.

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22

Goss, Gregory Gerard. "Interrelationships between gill morphology and acid-base regulation in freshwater fish." Thesis, University of Ottawa (Canada), 1993. http://hdl.handle.net/10393/6794.

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This thesis examines the branchial mechanisms utilized by freshwater fish to regulate internal acid-base status and presents a model to explain the underlying basis of the compensatory processes. Rainbow trout, Oncorhynchus mykiss, brown bullhead, Ictalurus nebulosus, and American eels, Anguilla rostrata, were examined under a variety of experimental treatments which induced both respiratory (hyperoxia, hypercapnia) and metabolic (post-hyperoxia, post-hypercapnia, HCl infusion, NaHCO$\sb3$ infusion) acid-base disturbances. Acid-base-regulation was achieved by appropriate adjustments of Na$\sp+
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23

Avlijas, Suncica. "Factors affecting the distribution and abundance of an invasive freshwater mysid." Thesis, McGill University, 2013. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=114218.

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The freshwater shrimp Hemimysis anomala is a recent Ponto-Caspian invader of the Great Lakes – St. Lawrence River basin. Based on its invasion history, high predation rate and the naiveté of the ecosystems in which it has been introduced, it has the potential to exert strong impacts on native food webs. Risk assessment and effective monitoring of the spread of this invader require information about the environmental factors that limit its local abundance and distribution. A literature review suggests that H. anomala has broad environmental tolerances but may be limited by low water conductivi
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24

Hadzihalilovic-Numanovic, Amra. "Genetic Variation and Relatedness of Freshwater Pearl Mussel Margaritifera margaritifera L. populations." Licentiate thesis, Karlstad University, Division for Environmental Sciences, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-2410.

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<p>The two papers presented in this thesis focus on population genetic study on freshwater pearl mussel populations in Sweden, using RAPD method. In paper I, I examine genetic variation within and between 5 populations in a single drainage area in south western Sweden. In paper II, I study the evolutionary relationship, and how genetic variation is related to population size, age structure and geographic isolation in 14 populations of freshwater pearl mussel in south central Sweden. In both papers I and II, I found that genetic variation was larger than found in previous studies using other te
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25

Bell, Andrew Stuart. "Studies on the biosystematics and biology of strigeids (Digenea) parasitic in freshwater fish." Thesis, University of Stirling, 1995. http://hdl.handle.net/1893/3383.

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This study is concerned with two strigeid genera which utilise fish as their second intermediate host and piscivorous birds as a definitive host, i.e. Apatemon (Apatemon) Sudarikov, 1959 and Ichthyocotylurus Odening, 1969. Although the lifecycle has been ascertained for most Ichthyocotylurus spp., confusion and disagreement still exist as to the constituent species, while all of the life-stages have been described for only a single member of the subgenus Apatemon (Apatemon). In order to clarify species membership to these taxa and indeed the taxonomic position of the subgenus Apatemon (Apatemo
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26

Martin, T. R. "The effects of water quality on the biology of freshwater peracarids (Crustacea, Malacostraca)." Thesis, University of Nottingham, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.374812.

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27

Jiao, Ping. "Chemical investigations of freshwater and fungicolous fungi." Diss., University of Iowa, 2006. http://ir.uiowa.edu/etd/78.

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28

Gilleland, Sarah. "Investigating Late Woodland-Period aquatic catchments through freshwater mussel assemblage composition." Thesis, Mississippi State University, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10141579.

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<p> During the Late Woodland Period in the American Southeast, the amount of space that any individual group could exploit began to shrink, due to the presence of other groups on the landscape. Resource expansion occurred to augment food supplies, resulting in increased exploitation of mussel beds. Because mussels can be extremely sensitive to the characteristics of the waterways they live in, the specific habitat requirements of these animals can be used to reconstruct the environments they were recovered from. In this thesis I use freshwater mussel assemblages to reconstruct hypothetical aqu
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29

Liptak, Michael A. "Water Column Productivity, Calcite Precipitation, and Phosphorus Dynamics in Freshwater Marshes." The Ohio State University, 2000. http://rave.ohiolink.edu/etdc/view?acc_num=osu1364288585.

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30

Jobin, Benoît. "The impact of human disturbance on nest predation patterns in freshwater marshes." Thesis, University of Ottawa (Canada), 1991. http://hdl.handle.net/10393/7466.

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Although predation is the major factor responsible for nest losses in birds, predation patterns in marshes and adjacent uplands are poorly known. This study examined the factors affecting nest predation on marsh-nesting birds found in areas affected by different intensities of human disturbance (urban, agricultural, natural). Artificial nests simulating waterfowl and passerine nests were used for that purpose. The nests, located along transects running from the center of the marshes to the adjacent upland habitats, were set up in the months of May, June and July 1989 and 1990. Eggshell remains
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31

Armstrong, Gary Dale. "Colonies as defence in the freshwater phytoplankton genus Dinobryon (Chrysophyceae)." Thesis, University of British Columbia, 1985. http://hdl.handle.net/2429/24468.

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This thesis addresses the idea that colony formation effectively increases the size of a phytoplankter thereby reducing grazing losses by deterring ingestion by zooplankton. It was initially hypothesized that colonies of Dinobryon (Ochromonadales, Chrysophyceae) deter zooplankton grazers, and that their spring population declined either because of a drop in the mean colony size of the Dinobryon population or from an increase in the abundances of large zooplankton grazers capable of ingesting large colonies. From January to May 1983 a small dystrophic lake was sampled weekly at three discrete d
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O'Driscoll, Nelson James. "Dissolved gaseous mercury dynamics and mercury volatilization in freshwater lakes." Thesis, University of Ottawa (Canada), 2003. http://hdl.handle.net/10393/29035.

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This thesis examines the production and distribution of dissolved gaseous mercury (DGM) in freshwater ecosystems and its relationship to mercury volatilization. The importance of volatilization was assessed within a multidisciplinary mercury mass balance for Big Dam West Lake (BDW) Kejimkujik Park, Nova Scotia. The magnitude of volatilization was found to be approximately double the direct wet deposition over lake and wetlands, and 27% of the direct wet deposition to the terrestrial catchment. Over the entire basin area the mass of mercury volatilized is 46% of the mass deposited by wet deposi
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33

So, Young Lee. "Initiation of Innate Immune Responses in the Freshwater Crayfish Pacifastacus leniusculus." Doctoral thesis, Uppsala University, Department of Evolutionary Biology, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-623.

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<p>Prophenoloxidase (proPO) is a key enzyme for generation of melanin and is activated by the proPO activating enzyme (ppA) to its active form, PO. The active ppA was purified and cloned from crayfish hemocytes and it is a typical serine proteinase containing a clip, a proline-rich, and a glycine-rich domain. A recombinant protein containing the clip-domain, with homology to horseshoe crab big defensin and mammalian â-defensin, had antibacterial activity <i>in vitro</i> against gram-positive bacteria.</p><p>The proPO activating system (proPO system) is triggered by lipopolysaccharides (LPS) or
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34

Brydges, Nichola M. "Cognition in freshwater fish : effects of the environment." Thesis, University of Edinburgh, 2008. http://hdl.handle.net/1842/2388.

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For animals that live in a reasonably variable environment the capacity for learning and memory allow them to adapt to the changes they experience. Ecological factors that vary between habitats can affect a range of learning behaviours. Less attention has been directed at how this variation may affect memory processes, or how different ecological variables might interact when shaping cognition and behaviour. Therefore one aim of this thesis was to investigate how different ecological variables shape memory abilities and to test whether those same variables affect other related behaviours such
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35

Arenovski, Andrea Lynn. "The distribution, abundance and ecology of mixotrophic algae in marine and freshwater plankton communities." Thesis, Massachusetts Institute of Technology, 1994. http://hdl.handle.net/1721.1/33523.

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36

Bell, Barbara Allen Spotila James R. "Effects of crude oil contamination on the reproduction of freshwater turtles /." Philadelphia, Pa. : Drexel University, 2005. http://dspace.library.drexel.edu/handle/1860/479.

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37

Schmidt, Brian A. "Determining the Habitat Limitations of Maumee River Walleye Production to Western Lake Erie Fish Stocks." University of Toledo / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1463067261.

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38

Reeve, I. D. "Aspects of the biology of an introduced and a native species of freshwater crayfish." Thesis, University of Nottingham, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.278531.

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39

Maddern, Mark. "The distribution, biology and ecological impacts of three introduced freshwater Teleosts in Western Australia." Thesis, Maddern, Mark (2003) The distribution, biology and ecological impacts of three introduced freshwater Teleosts in Western Australia. Honours thesis, Murdoch University, 2003. https://researchrepository.murdoch.edu.au/id/eprint/41197/.

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The distribution, biology and ecological impacts of three introduced freshwater teleosts in Western Australia were investigated. The One-Spot Livebearer (Phalloceros caudimaculatus: Poeciliidae), the Swordtail (Xiphophorus helleri: Poeciliidae) and Tilapia or Mozambique Mouthbrooder (Oreochromis mossambicus: Cichlidae), are popular ornamental species that exist in selfsustaining feral populations in the Indian Ocean (Pilbara) or the Southwest Coast Drainage divisions of Western Australia. Phalloceros caudimaculatus is a small (females up to 60, males up to 40 mm TL), non-aggressive, sexuall
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Moore, Theodore B. "Characterization of a new freshwater methanogen, Methanogenium wolfei sp. nov." PDXScholar, 1985. https://pdxscholar.library.pdx.edu/open_access_etds/3537.

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A recently isolated freshwater methanogenium species, Methanogenium wolfei, is characterized. Cells were irregular cocci, measuring 1.5 to 2.0 micrometers in diameter. No motility was observed, but 1 to 2 flagella per cell were observed after staining with Gray's Flagella Stain. Colonies formed by this species were small, shiny, and green-brown in color. Formate or hydrogen plus carbon dioxide served as substrates for growth. The optimal temperature for growth was found to be 45 degrees centigrade with minimal growth below 30 degrees centigrade and above 55 degrees centigrade. The optimal pH f
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Graca, Manuel Augusto Simoes. "Observations on the feeding biology of two stream-dwelling detritivores : Gammarus pulex (L.) and Asellus aquaticus (L.)." Thesis, University of Sheffield, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.244076.

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42

Bunbury, Joan. "Modern distribution of freshwater ostracodes in the southwest Yukon Territory and northern British Columbia, Canada." Thesis, University of Ottawa (Canada), 2004. http://hdl.handle.net/10393/26593.

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This biogeographical study documents the modern distribution of ostracodes in the southwest Yukon Territory and northern British Columbia, Canada. The study tested the hypothesis that dissolved ion composition and concentrations of the lake water are the primary determinants of the distribution of modern ostracodes in this region. A total of 28 freshwater species representing 8 genera were identified in the 33 study lakes. Species common in the southwest Yukon are widely distributed throughout North America, and include Cyclocypris ampla, Candona candida, Cypria turneri, Cypria ophtalmica, an
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Chordas, Stephen W. "Investigations into acute potassium intoxication in the introduced freshwater bivalves Dreissena polymorpha and Corbicula fluminea /." The Ohio State University, 2000. http://rave.ohiolink.edu/etdc/view?acc_num=osu1488195154358794.

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Driver, Patrick, and n/a. "The role of carp (Cyprinus carpio L) size in the degradation of freshwater ecosystems." University of Canberra. School of Resources, Environmental and Heritage Sciences, 2002. http://erl.canberra.edu.au./public/adt-AUC20050404.110223.

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Carp (Cyprinus carpio) are alien freshwater fish that are globally widespread and often associated with highly degraded freshwater ecosystems. This study explored carphabitat interactions that could contribute to the worldwide distribution of, and consequent ecological impacts by, carp. Particular emphasis was placed on the role of carp size in these interactions. One component of this study involved a field experiment that was used to quantify the effects of carp biomass density and size-structure on freshwater invertebrate communities and water quality. The treatments in this field experimen
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Madhuri, Sumeda. "Polyamine Transformation by Bacterioplankton in Freshwater Ecosystems." Kent State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=kent150114771851742.

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46

Thomas, Gethin Rhys. "Conservation ecology of the endangered freshwater pearl mussel, Margaritifera margaritifera." Thesis, Swansea University, 2011. https://cronfa.swan.ac.uk/Record/cronfa43091.

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The general aim of this thesis was to examine the merits of ex-situ vs. in-situ strategies for the conservation of the endangered freshwater pearl mussel, Margaritifera margaritifera, and to investigate the relationship of the larval parasitic stages of the mussel (glochidia) with the salmonid hosts. To this end, I critically reviewed the literature on conservation of freshwater mussels, developed methods for quantifying the behaviour and activity patterns of adult mussels in captivity, experimentally studied host specificity, and quantified the physiological and behavioural effects of glochid
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Booth, Paul Milton Jr. "Nitrogen and phosphorus cycling strategies in two tidal freshwater macrophytes, Peltandra virginica and Spartina cynosuroides." W&M ScholarWorks, 1989. https://scholarworks.wm.edu/etd/1539616578.

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Monotypic stands of the macrophytes Peltandra virginica and Spartina cynosuroides, which shared a common boundary, were studied at Sweethall Marsh, a tidal freshwater marsh located on the Pamunkey River within the Chesapeake Bay estuarine system, Virginia. Compartmental models indicate that both Peltandra and Spartina take up, internally cycle, and release to the environment, significant levels of nitrogen and phosphorus. Models also suggest that Peltandra and Spartina and their associated sediment compartments are capable of regulating nitrogen and phosphorus fluxes through their uptake and s
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48

Reid, Iain Grant. "Geographical variation in life history response to stress in the freshwater snail, Lymnaea stagnalis." Thesis, Edinburgh Napier University, 2013. http://researchrepository.napier.ac.uk/Output/6326.

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Life histories are known to vary across geographic ranges in response to a number of factors, both biotic and abiotic. Environmental calcium availability has been shown to affect freshwater gastropod life histories due to its fundamental requirement in shell formation. Adaptation of life histories to local environmental conditions may cause the response to novel pollutants to vary across populations within a species due to trade-offs between and among traits but very few studies have examined wide scale variation in life history response to stress across geographic ranges. A long term study wa
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Pile, Adele J. "The role of microbial food webs in benthic-pelagic coupling in freshwater and marine ecosystems." W&M ScholarWorks, 1996. https://scholarworks.wm.edu/etd/1539616810.

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A majority of carbon in freshwater and marine ecosystems is in the form of ultraplankton, heterotrophic and autotrophic plankton &<&5 &\mu&m including heterotrophic bacteria, Prochlorococcus, cyanobacteria, and autotrophic eucaryotes. However, ultraplankton and subsequently microbial food webs have yet to be incorporated into models of benthic-pelagic coupling despite the preponderance of macroinvertebrates with the capacity to feed on ultraplankton. I have examined the role of microbial food webs in benthic-pelagic coupling in three ecosystems: Lake Baikal, Siberia, Russia; Gulf of Maine, Nor
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Sternberg, David. "Life-History Traits and the Functional Diversity of Australian Freshwater Fish." Thesis, Griffith University, 2014. http://hdl.handle.net/10072/367236.

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Australian freshwaters are home to approximately 256 fish species from 36 families, many of which are endemic to the country and considered threatened, vulnerable or rare in the wild. In part this is due to a long history of continental isolation where increasing aridity and flow unpredictability have given rise to a fish fauna characterised by a unique association of life-history traits (i.e. characteristics of an organism that contribute to its fitness or performance, and which allow it to function in the environment) in order to cope with natural variation in environmental seasonality, stab
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