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Dissertations / Theses on the topic 'Ecology. Freshwater ecology'

Author: Grafiati

Published: 4 June 2021

Last updated: 2 February 2022

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1

Clegg, Mark Robert. "Behavioural ecology of freshwater phytoplanktonic flagellates." Thesis, Lancaster University, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.403729.

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2

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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3

Chadderton, W. L. "The ecology of Stewart Island freshwater communities." Thesis, University of Canterbury. Zoology, 1990. http://hdl.handle.net/10092/6568.

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A comprehensive survey of the stream and river faunas of Stewart Island (invertebrates and fish) was undertaken between August 1987 and December 1989. In total, 113 invertebrate taxa and 12 fish species were recorded. The invertebrate fauna is characterised by a common core of taxa (Chiltonia rivertonensis, Oligochaeta, Chironomidae, Deleatidium, Zelandoperla, Zelandobius, Austroperla cyrene, Hydrobiosidae stenocerca, Hydrobiosidae, Simuliidae, and Scirtidae) and a paucity or absence of some common mainland families or genera, notably the Notonemouridae, Conoesucidae, and Archichauliodes. The

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4

Sivichai, Somsak. "Tropical freshwater fungi : their taxonomy and ecology." Thesis, University of Portsmouth, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.302240.

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5

Sanderson, Rory J. "Ecology of freshwater plankton in contrasting hydraulic environments." Thesis, University of Leicester, 1998. http://hdl.handle.net/2381/29785.

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The effects of contrasting water residence time on the planktonic community of three water bodies was studied. The sites were Rutland Water, Covenham reservoir and the River Nene, in order of decreasing retention time. The river was the only site where the residence time was sufficiently short to directly impact upon planktonic populations. The importance of physical mechanisms of control in the river was indicated by the dominance of r-selected phytoplankton, namely diatoms and green algae, and zooplankton, namely rotifers. This pattern was in contrast to that of the reservoirs in which slowe

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6

Zhu, Bin. "Direct and indirect ecological effects of Dreissenid mussels (the zebra mussel Dreissena polymorpha and the quagga mussel D. bugensis) on submerged macrophytes in North American lakes." Related electronic resource: Current Research at SU : database of SU dissertations, recent titles available full text, 2006. http://proquest.umi.com/login?COPT=REJTPTU0NWQmSU5UPTAmVkVSPTI=&clientId=3739.

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7

Huddleston, Amara Lynn. "The Influence of Ice Cover on the Coupling between Lake Erie Larval Walleye and their Prey." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1532082401065932.

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8

Fear, Lesley Anne. "Microbial ecology of the gut of Gammarus pulex." Thesis, Lancaster University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.250026.

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9

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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10

Jamal, Al-Lail S. S. "Ecophysiological studies on freshwater gammarid crustaceans." Thesis, University of Nottingham, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.373334.

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11

Barretto, de Menezes Alexandre. "Molecular ecology of cellulose-degrading microorganisms in freshwater lakes." Thesis, University of Liverpool, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.511074.

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12

Cai, Ji. "Ecology and diversity of freshwater picocyanobacteria in Japanese lakes." Doctoral thesis, Kyoto University, 2021. http://hdl.handle.net/2433/263502.

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13

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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14

Lee, Jacqueline S. "The distribution and ecology of the freshwater molluscs of northern British Columbia." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0033/MQ62481.pdf.

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15

Medeiros, Elvio S. F. "Trophic ecology and energy sources for fish on the floodplain of a regulated dryland river Macintyre River, Australia /." Connect to this title online, 2004. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20051115.174552/.

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16

Amin, M. K. A. "The ecology and genetics of Pseudomonas bacteriophage in freshwater systems." Thesis, Cardiff University, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.381224.

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17

Lassiere, Olivia L. "The ecology of Neoechinorhynchus rutili (Acanthocephala) in Scottish freshwater lochs." Thesis, University of Glasgow, 1989. http://theses.gla.ac.uk/2440/.

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1. The ecology of Neoechinorhynchus rutili (Acanthocephala) has been investigated in a Scottish population of brown trout (Salmo trutta) inhabiting a small highland loch, in Central region. The results have been compared with data from other hosts and localities. In addition, a complementary study on the ecology of Echinorhynchus truttae in brown trout was carried out at a reservoir in Lothian Region. 2. A review of the knowledge of the classification, morphology of developmental stages, life cycle, ecology and distribution and biochemistry and physiology of Neoechinorhynchus rutili was undert

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18

Harrison, A. J. "Ecology and control of the freshwater fish louse (Argulus foliaceus)." Thesis, Queen's University Belfast, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.431598.

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19

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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20

Indranil, Mukherjee. "Ecology of kinetoplastid flagellates in freshwater deep lakes of Japan." 京都大学 (Kyoto University), 2016. http://hdl.handle.net/2433/217135.

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21

Qin, Peibing. "Effects of light, nutrients and Dreissena (Dreissena polymorpha and Dreissena bugensis) on benthic ecosystems in lakes." Related electronic resource:, 2007. http://proquest.umi.com/pqdweb?did=1407689711&sid=1&Fmt=2&clientId=3739&RQT=309&VName=PQD.

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22

Pinkerton, Jeramy John. "Predicting the Potential Distribution of Two Threatened Stream Fish Species in Northeast Ohio." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1461189304.

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23

Hijji, A. M. "Studies on the pollution ecology of the freshwater isopod Asellus aquaticus." Thesis, University of Nottingham, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.374807.

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24

Schuwerack, Petra-Manuela. "Environmental pollution and disease : multiple stress responses in freshwater hosts." Thesis, Royal Holloway, University of London, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.272253.

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25

Babiker, Ismail Elsheikh. "Evaluation of various biomanipulations aimed at controlling freshwater pulmonate snails." Thesis, University of Sussex, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.332587.

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26

Judge, David, and n/a. "The Ecology of the polytopic freshwater turtle species, Emydura macquarii macquarii." University of Canberra. Resource, Environmental and Heritage Sciences, 2001. http://erl.canberra.edu.au./public/adt-AUC20050418.151350.

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An ecological study of Emydura macquarii macquarii in the south-east region of Australia was conducted between October 1995 and March 1998. E. m. macquarii is an abundant and widespread species of short-necked turtle that is highly variable in morphology and related life history attributes. No study in Australia had previously looked at geographic variation in biological traits in freshwater turtles, hence the level of variation in E. m. macquarii had been poorly documented. The principal aims of this study were to investigate the plasticity of life history traits across populations of E. m. m

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27

Hastie, Lee Clark. "Conservation and ecology of the freshwater pearl mussel (Magaritifera margaritifera (L.))." Thesis, University of Aberdeen, 1999. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=158482.

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The population, reproductive biology and physical habitat requirements of endangered freshwater pearl mussel (<I>Margaritifera margaritifera</I> (L.)) populations in Scotland were investigated. Surveys of viable populations revealed overall densities, based on 1m<sup>2</sup> quadrat counts, of 0.27-7.98 mussels.m<sup>-2</sup>. Total estimates for rivers, based on extrapolations of 50m transect counts, ranged from 2,000 to 0.9-3.7 million mussels. The expected predominance of young mussels was not achieved in any population. In order to test a hypothesis that juveniles were under-represented in

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28

Clarke, Hazel Caroline. "Ecology and behaviour of the invasive freshwater amphipod gammarus pulex (L.)." Thesis, Queen's University Belfast, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.601109.

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The sucess of invasive species is said to depend upon the availability of resources, interactions with natural enemies and the abiotic environment. However, the behavioural interactions also play an important role. This thesis uses the freshwater amphipod Gammarus pulex (L.) to investigate the ecology and behaviour of an invasive species, with particular emphasis on female reproduction.

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29

Hill, Samantha. "The ecology and conservation of the rare freshwater bryozoan, Lophopus crystallinus." Thesis, University of Reading, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.434311.

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30

Atkinson, Benjamin K. "Community ecology of creek-dwelling freshwater turtles at Nokuse Plantation, Florida." [Gainesville, Fla.] : University of Florida, 2009. http://purl.fcla.edu/fcla/etd/UFE0025093.

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31

Hunsinger, Glendon Brian. "Organic matter exchanges between freshwater-tidal wetlands and the Hudson River." Diss., Online access via UMI:, 2009.

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32

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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33

Briland, Ruth. "Evaluating the causes and consequences of ecosystem change in Lake Erie: From plankton to fish." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1532076326598788.

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34

Green, Brian E. "Sharing Water: A Human Ecological Analysis of the Causes of Conflict and Cooperation Between Nations Over Freshwater Resources." Connect to this title online, 2002. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1039201377.

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Thesis (Ph. D.)--Ohio State University, 2002.<br>Title from first page of PDF file. Document formatted into pages; contains xiii, 159 p. Includes abstract and vita. Advisor: Kazimierz M. Slomczynski, Dept. of Sociology. Includes bibliographical references (p. 151-159).

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35

Procter, R. M. "The feeding ecology of three species of lake-dwelling leeches." Thesis, University of Liverpool, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.380088.

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36

Hardwick, Mary Diane. "Comparative studies of zinc toxicity in two species of freshwater amphipod crustaceans." Thesis, University of Leicester, 1985. http://hdl.handle.net/2381/34095.

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37

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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38

Cowley, C. "The influence of road runoff on the benthic macro-invertebrates of an unpolluted chalk stream." Thesis, University of Westminster, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.354965.

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39

Clark, Ezra. "Microthermal habitats in British rivers." Thesis, University of Exeter, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.267237.

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40

Suttle, Curtis Arnold. "Effects of nutrient patchiness and N:P supply ratios on the ecology and physiology of freshwater phytoplankton." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/27547.

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Laboratory and field experiments examined several aspects of the interaction of freshwater phytoplankton species and plankton communities with nitrogen and phosphorus nutrient resources. The laboratory studies focused on the following three main areas: 1) effects of nutrient 'patchiness' on phytoplankton community structure; 2) kinetics of phosphate (PO₄⁻³ ) and ammonium (NH₄⁺) uptake of phytoplankton grown under non-steady-state but limiting rates of nutrient supply; 3) the effect of different N:P supply ratios on phytoplankton NH₄⁺ and PO₄⁻³ uptake kinetics and community structure. Nutrient

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41

McKinnon-Newton, Laurie. "Ecology of plankton in a terminal lake Walker Lake, Nevada, USA /." abstract and full text PDF (free order & download UNR users only), 2007. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1446303.

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42

Yakushin, Alexander. "Ecology and morphology of selected diatom species in the genus Aulacoseira." Thesis, University of Ulster, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.326314.

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43

Tokeshi, M. "The population and community ecology of chironomids in a small temperate stream." Thesis, University of East Anglia, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.355362.

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44

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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45

Filizadeh, Yousef. "The management ecology of aquatic weeds which cause problems in Iranian freshwater systems." Thesis, University of Glasgow, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.318119.

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46

Brown, Rebecca Jayne. "Development of culture and toxicity testing methods for the freshwater copepod Bryocamptus zschokkei." Thesis, University of Plymouth, 2001. http://hdl.handle.net/10026.1/2085.

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The aim of this thesis was to evaluate the use of a meiofaunal copepod as a test species for assessing the developmental and reproductive effects of toxicants relevant to freshwater ecosystems. The harpacticoid copepod Bryocamptus zschokkei was chosen as a candidate test species as it possesses several attributes (widespread distribution, small size and fast development times) that are considered pre-requisites for toxicity test organisms, and has previously been shown to be a sensitive component of the stream community to contaminant exposure. Prior to conducting toxicity tests with B. zschok

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47

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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48

Cai, Lei, and 蔡磊. "Fungal diversity from freshwater & riparian habitats and phylogeneticsof the Sordariales." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2006. http://hub.hku.hk/bib/B36773827.

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49

Sutherland, Darin Lee. "Phylogeography and Ecology of New Zealand Freshwater Amphipoda (Paracalliope, Paraleptamphopus, and Phreatogammarus)." The University of Waikato, 2006. http://hdl.handle.net/10289/2650.

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ABSTRACT This thesis examines phylogenetic patterns in three New Zealand amphipod taxa in relation to current geographic distributions and historical climatic (e.g. glaciation, marine inundation) and geological (e.g. mountain building) events using DNA sequencing and distributional data. It also examines how recognition behaviour can be used to delineate potential species boundaries and to assess the role of sexual selection. The endemic genus Phreatogammarus has been found in only a limited number of sites and is not very abundant. An analysis of the genetic variation of two species within t

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50

MacNeil, Calum. "The ecology of freshwater amphipods : a study of invasive and native species." Thesis, Queen's University Belfast, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.312638.

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