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Dissertations / Theses on the topic 'Seaweed'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Calderwood, Danielle. "Investigating the anti-diabetic properties of Irish seaweeds and Irish seaweed extracts." Thesis, Queen's University Belfast, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.669673.

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Diabetes mellitus is a chronic disorder characterised by a blood glucose level persistently above normal due to loss of insulin production from the pancreas or peripheral tissues becoming resistant to insulin. Currently, treatment for diabetes accounts for 12% of the world's total health expenditure. There are a range of therapies available for the treatment of T2DM; however treatments can be expensive and associated with adverse effects. The studies conducted in this thesis investigated the ability of seaweed extracts to exert anti-diabetic activities through established pharmaceutical mechan

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2

Vettori, Davide. "Hydrodynamic performance of seaweed farms : an experimental study at seaweed blade scale." Thesis, University of Aberdeen, 2016. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=230585.

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3

Le, Monnier Francis. "Seaweed decomposition in soil." Thesis, Imperial College London, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.300081.

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4

Naidoo, Krishnaveni. "Testing the suitability of local seaweeds and formulated feed as a food source for abalone (Haliotis midae Linnaeus) in an Integrated Land-based Aquaculture System." Thesis, Online Access, 2008. http://etd.uwc.ac.za/usrfiles/modules/etd/docs/etd_gen8Srv25Nme4_9129_1263510405.pdf.

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5

Andras, Tiffany D. "Seaweed allelopathy against coral: surface distribution of seaweed secondary metabolites by imaging mass sepctrometry." Thesis, Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/44797.

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Coral reefs are in global decline, with seaweeds increasing as corals decrease. Though seaweeds have been shown to inhibit coral growth, recruitment, and survivorship, the mechanism of these interactions is poorly known. Here we use field experiments to show that contact with four common seaweeds induces bleaching on natural colonies of Porites rus. Controls in contact with inert, plastic mimics of seaweeds did not bleach, suggesting treatment effects resulted from allelopathy rather than shading, abrasion, or physical contact. Bioassay-guided fractionation of the hydrophobic extract from

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6

Leggett, Margaret Claire. "Competitive interactions between seaweed flies." Thesis, University of Nottingham, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.336087.

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7

Whapham, Catherine. "Biologically-active compounds in seaweed extracts." Thesis, University of Portsmouth, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.310473.

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8

Rees, Rhianna. "Seaweed is Sexy : The consumption and utilisation of seaweed throughout British history and the marketing that surrounds it." Thesis, Uppsala universitet, Institutionen för arkeologi och antik historia, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-388412.

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Damp, rotting, smelly, rising from the depths, washed up on shorelines. Seaweed (or Macroalgae) has transitioned over time in its position and uses within the British Isles; as discussed in the thesis it has undergone an evolution from its historical use as a source of food in times of desperation, to the superfood it is lauded as today. Other applications, from medicinal to agricultural, have contributed to a narrative of seaweed’s identity over the centuries, to the appeal of seaweed as a food source in the present day. There is an increased interest in seaweed, especially for culinary purpo

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9

Glenn, Kyle William. "Evolutionary ecology of seaweed strength and flexibility." Thesis, University of British Columbia, 2013. http://hdl.handle.net/2429/44342.

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An organism’s success is largely dependent upon its ability to function and survive within the physical constraints of its environment. The wave-swept shoreline is one of the most mechanically challenging environments on Earth, with passing waves imposing hydrodynamic forces comparable to those in a hurricane every 5-10 seconds. Nonetheless, the wave-swept intertidal hosts an exquisite diversity of plants and animals. I used field and laboratory techniques to examine morphological and material adaptations of seaweeds to life in high-energy environments. In Chapter 2, I experimentally manipulat

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10

Tye, Andrew M. "Responses to calcified seaweed in managed grassland." Thesis, University of Wolverhampton, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.309803.

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11

Archer, Gregory Scott. "Reducing stress in sheep by feeding the seaweed Ascophyllum nodosum." Texas A&M University, 2005. http://hdl.handle.net/1969.1/2514.

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Feeding the extract of the seaweed Ascophyllum nodosum (ANOD) has been shown to mediate the response of livestock to certain environmental stressors. To determine if feeding ANOD is useful in alleviating handling and transport stress, two trials were conducted. The dose response trial was conducted to determine at which rate ANOD should be fed to obtain beneficial results. Forty-four lambs received ANOD at either 0 (control), 0.5, 1, or 2% of dry matter intake per day (approximately 0, 0.25, 0.5, and 1 g/kg of body wt per day). Sheep were administered ANOD twice daily for 14d. After 14d of sup

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12

Connolly, Dorothy Jane. "Callus and suspension cultures in the Laminariales." Thesis, University of the West of Scotland, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.358718.

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13

Ismail, Ahmad. "Numerical phenetic studies of the genus Sargassum C. Agardh (Sargassaceae, fucales) from the Far East with special reference to Malaysian species." Thesis, Heriot-Watt University, 1998. http://hdl.handle.net/10399/1526.

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14

Stengel, Dagmar Brigitte. "Ecophysiology of growth and photosynthesis of Ascophyllum." Thesis, Queen's University Belfast, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.241496.

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15

Kraberg, Alexandra. "The potential for coevolution between the brown alga Ascophyllum nodosum (Linn.) Lejolis, the gastropod Littorina obtusata and the epiphyte Polysiphonia lanosa (Linn.) Tandy." Thesis, University of Liverpool, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.250265.

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16

Pitafi, Karim Dad. "Male mate choice in seaweed flies, Coelopa frigida." Thesis, University of Nottingham, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293623.

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17

Johnson, Stuart. "Surface microtopography and the fate of seaweed propagules." Thesis, University of Liverpool, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.333579.

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18

Chilton, Lydia B. "Seaweed : a Web application for designing economic games." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/53094.

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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2009.<br>Includes bibliographical references (p. 60-61).<br>Seaweed is a web application for experimental economists with no programming background to design two-player symmetric games in a visual-oriented interface. Games are automatically published to the web where players can play against each other remotely and game play is logged so that the game's designer can analyze the data. Seaweed's interface draws heavily on interface features of Microsoft PowerPoint'" and ExcelTM, which e

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19

Vestling, Veronika, and Viktoria Forsberg. "The livelihoods of female seaweed farmers : A study about women's experiences of old and new techniques of seaweed farming on Zanzibar, Tanzania." Thesis, Högskolan för lärande och kommunikation, Högskolan i Jönköping, HLK, Globala studier, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-40719.

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Seaweed has been hit hard by climate change around the world. The island of Zanzibar, which is the world’s third biggest exporter of seaweed, is one of the places where seaweed is affected. 80 percent of the seaweed farmers on Zanzibar are women who are directly affected by climate change since they are making a living from seaweed farming. New efforts to tackle the impact of climate change on seaweed has been made on Zanzibar through the SEA PoWer project which is a new technique of growing seaweed and enables twenty-four female seaweed farmers to grow in deep and cooler waters instead of the

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20

Hehre, Edward James III. "Effects of seaweed farming on tropical shallow coral ecosystems." Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/59344.

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Seascapes are being transformed by human activities through a variety of spatially extensive extractive uses. This industrialization has the potential to radically alter the ecology of our oceans. Through focused ecosystem-based management of already degraded systems, it may be possible to create novel ecosystems that maximize beneﬁts for humans, while increasing the diversity and abundance of dependent communities. In this thesis I examine seaweed farming on degraded coral reef ecosystems in order to examine 1) the relationship between seaweed farms and rabbitfish production globally, 2) the

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21

Yang, Jinbai. "Biosorption of uranium and cadmium on Sargassum seaweed biomass." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0035/NQ64698.pdf.

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22

Wikström, Sofia A. "Marine seaweed invasions : the ecology of introduced Fucus evanescens /." Stockholm : Botaniska institutionen, Univ, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-132.

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23

Yang, Jinbai 1964. "Biosorption of uranium and cadmium on sargassum seaweed biomass." Thesis, McGill University, 1999. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=36736.

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Biosorption is a property of certain types of inactive, dead biomass to bind and concentrate heavy metals from even very dilute aqueous solutions. It may be used for purification of metal containing industrial waste effluents. The issues related to the biosorption process design and optimization were addressed by (1) equilibrium isotherm relationships, (2) biosorption process rate and (3) breakthrough time in a continuous-flow biosorption column. This work investigates these three aspects for the biosorption of the heavy metals uranium and cadmium on protonated Sargassum fluitans seaweed bioma

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24

Alexander, Paul. "The responses of crops and soils to calcified seaweed." Thesis, University of Wolverhampton, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.323090.

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25

Foster, Stephen Paul. "Selection concerning reproduction in the seaweed fly, Coelopa frigida." Thesis, University of Nottingham, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.329823.

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26

Armstrong, Evelyn. "Ecological studies of heterotrophic protists associated with seaweed surfaces." Thesis, University of London, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.286075.

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27

Hartley, Suzanne. "Remediation of abandoned metal mine drainage using dealginated seaweed." Thesis, Aberystwyth University, 2008. http://hdl.handle.net/2160/b9217acb-b8ad-4180-af12-a1627d7137c4.

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This thesis develops and demonstrates an innovative method for adsorbing metals from metal mine drainage in mid-Wales and northern Italy using dealginated seaweed (DS) as a biosorbent. The chemical composition of 15 mine drainages and two receiving waters in Wales was determined over a two year period in relation to precipitation and season. The waters were circum-neutral, iron-poor (<1 mg/L) but metal-rich, dominated by Zn ( 42 mg/L), Cu ( 188 μg/L), Cd ( 99 μg/L) and Pb ( 2.7 mg/L). The chemical composition varied throughout the year, but did not necessarily show clear seasonal variation, wi

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28

Tano, Stina. "Seaweed in the tropical seascape : Importance, problems and potential." Doctoral thesis, Stockholms universitet, Institutionen för ekologi, miljö och botanik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-129256.

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The increasing demand for seaweed extracts has led to the introduction of non-native seaweeds for farming purposes in many tropical regions. Such intentional introductions can lead to spread of non-native seaweeds from farming areas, which can become established in and alter the dynamics of the recipient ecosystems. While tropical seaweeds are of great interest for aquaculture, and have received much attention as pests in the coral reef literature, little is known about the problems and potential of natural populations, or the role of natural seaweed beds in the tropical seascape. This thesis

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29

Newman, James Edward. "Physiological responses of Gracilariopsis longissima to copper exposure." Thesis, University of Plymouth, 1998. http://hdl.handle.net/10026.1/2413.

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Seaweeds fulfil many of the criteria regarded as being important for a good biomonitor. They are known to accumulate trace metals and the concentration of these metals measured in the thalli of native populations has been related to the level of contamination in the surrounding water. However, this passive biomonitoring approach has been of limited use and the relationship between the concentration of metal in the seaweed and that in the surrounding environment is not always apparent. The aim of this study was to investigate the response of the rhodophyte Gracilariopsis longissima to copper ex

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30

Lewis, Stella Anne. "Physiological and cellular level responses of Enteromorpha spp. to chemical and thermal stress." Thesis, University of Plymouth, 1998. http://hdl.handle.net/10026.1/2147.

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The aims of this project were to investigate the cellular stress response (CSR) in Enteromorpha spp. and assess the potential of the Stress-70 protein (an indicator of the CSR) as a biomarker of pollutant exposure and acquired tolerance in Enteromorpha spp., compared with conventional physiological endpoints of toxicity. Cross-reactivity of a commercial Stress-70 antibody with E. intestinalis proteins was determined and used to develop an assay for Stress-70. Using this assay E. intestinalis was found to exhibit a typical heat shock response. Stress-70 proved to be a relatively insensitive bio

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31

McGregor, Bruce Jonathan. "Aspects of the biology of Porphyra (Bangiales, rhodophyta) of the Isle of Man." Thesis, University of Liverpool, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.317182.

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32

Normansell, Helen Louise. "The novel application of seaweed for functional food product development." Thesis, Manchester Metropolitan University, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.591091.

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Background: Seaweed is an underutilised food source in Britain, despite being abundant on the surrounding shores, it is only found in localised dishes such as laverbread . Seaweed has been shown to be a source of basic nutrients such as protein and fibre as well as a source of vitamins and minerals. It has been identified as potential source of bioactive compounds including antioxidants. The seaweed Ascophylfum nodosum is an edible brown seaweed common to the British Isles. The main aims of this study were to evaluate if ultrasound-assisted extraction (UAE) was an efficient and environmentally

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33

Sagerman, Josefin. "Marine seaweed invasions : Impacts and biotic resistance in native ecosystems." Doctoral thesis, Stockholms universitet, Institutionen för ekologi, miljö och botanik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-116788.

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Marine seaweeds constitute one of the most productive plant systems known on Earth and a rich fauna including juvenile fish and crustaceans is dependent on the habitats they form. Human influence on marine costal ecosystems has resulted in large scale changes to the abundance and distribution of species, where species introductions constitute an obvious part. The aims of this thesis were to 1) explore how non-native seaweeds impact on ecosystem functions (primary production and decomposition), and 2) study how interactions between non-native seaweeds and native communities affect invasion succ

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34

Dove, Cassandra. "Exploring the use of seaweed biopolymers in composite construction products." Thesis, University of Strathclyde, 2017. http://digitool.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=28498.

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The ambition of this research was to develop composite building products which utilise a locally sourced, natural material in the form of alginate - a biopolymer derived from macro-algae. Two case study materials were included as part of the project: unfired clay bricks, where the alginate was used as a stabilising additive, and an alginate-based insulation, which was proposed as an alternative to petrochemical-based foams or silica aerogels. For both materials, a series of prototypes were produced and characterised in order to investigate the role of the alginate source and chemical compositi

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35

Romero, Gonzalez Maria Elena. "Characterisation and optimisation of biosorption of metals by dealginated seaweed." Thesis, Sheffield Hallam University, 2001. http://shura.shu.ac.uk/20294/.

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The ability of dealginated seaweed, a waste material derived from the commercial processing of seaweed for alginate production, to remove cadmium, lead, nickel, copper, chromium, silver, aluminium and gold from solution was determined. Metal sorption was found to be rapid (90% removal within 5 minutes), achieving a residual concentration of 0.9 mg L[-1] after 1 h contact time from an initial solution concentration of 10 mg L[-1]. The binding of metal by dealginate was found to be pH dependent, optimal sorption occurring at around pH 6-8 for cadmium, lead, nickel, copper and chromium and pH 3-4

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36

Engledow, Henry Riley. "The biogeography and biodiversity of the Namibian intertidal seaweed flora." Doctoral thesis, University of Cape Town, 1998. http://hdl.handle.net/11427/9066.

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Bibliography: leaves 149-160.<br>There have been very few intertidal studies carried out on the Namibian coast. With respect to seaweeds in particular there have been a number of species lists and shore descriptions, but very little research into the biogeography, diversity or ecology. One of the reasons for the lack of research is probably that much of the 1500 km coast is inaccessible. The coastline is relatively straight with few inlets or bays and comprises mostly sandy beaches, with few rocky shores. Estimates range from 5-16% of rocky shores for the total coast length, and as a result th

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37

Félix, Rafael Alexandre Faria da Costa. "Processing and characterization of seaweed phenolic extractives: a systematic approach." Master's thesis, Universidade de Aveiro, 2017. http://hdl.handle.net/10773/22781.

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Mestrado em Biotecnologia Molecular<br>As políticas industriais do século XXI têm sido pressionadas para uma mudança que torne sustentável o atual paradigma dos mercados e do desenvolvimento económico. A bioeconomia – assente no aproveitamento integral, na valorização e na recirculação das matérias primas utilizadas na indústria, tanto quanto possível de origem biológica - tem sido vista como uma abordagem promissora. A bioprospecção da biomassa para o desenvolvimento de novas aplicações, nomeadamente no isolamento de compostos bioativos, representa uma das linhas de investigação e desenvolvim

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38

Mystikou, Alexandra. "Seaweed biodiversity around the Antarctic Convergence in the South Atlantic." Thesis, University of Aberdeen, 2015. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=227597.

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This study focuses on the seaweed biodiversity around the Antarctic Convergence in the South Atlantic. It integrates field work in the Falkland Islands and surrounding regions with algal culturing, molecular techniques, microscopy and morphological identification. Chapter 2 explores the diversity of seaweeds of the south-western Antarctic Peninsula which is poorly studied, contrasting with the substantial knowledge available for the northern parts of the Peninsula. A baseline seaweed species checklist for the southern Adelaide Island and northern Marguerite Bay region is presented here, combin

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39

Montecinos, Alejandro. "Species delienation and hybridization in the brown seaweed Ectocarpus complex." Thesis, Paris 6, 2016. http://www.theses.fr/2016PA066328/document.

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Le genre Ectocarpus Lyngbye (Ectocarpales, Phaeophyceae) regroupe des algues marines filamenteuses caractérisées par un cycle haploïde-diploïde. L'objectif de la thèse était de délimiter les espèces et d'étudier la spéciation dans ce genre. Nous avons commencé par clarifier le nombre d'espèces cryptiques en utilisant deux loci indépendants et une approche intégrative associant une analyse de détection de " barcode gap " avec des reconstructions phylogénétiques. Nos résultats montrent l'existence d'au moins 15 espèces qui se répartissent en un groupe monophylétique composé d'E. crouaniorum (Ecr

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40

Martone, Patrick Ted. "Biomechanics of flexible joints in the calcified seaweed Calliarthron cheilosporioides /." May be available electronically:, 2007. http://proquest.umi.com/login?COPT=REJTPTU1MTUmSU5UPTAmVkVSPTI=&clientId=12498.

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41

Jensen, Mari N. "Cultivating Edible Seaweed in Hawaii: New technique helps local farmers." College of Agriculture, University of Arizona (Tucson, AZ), 2004. http://hdl.handle.net/10150/295866.

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42

Malik, Danish J. "Algal biomass as adsorbents for heavy metal sorption from aqueous solutions." Thesis, Loughborough University, 1999. https://dspace.lboro.ac.uk/2134/7196.

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This thesis evaluates the performance of marine algal-based biosorbents in treating trace metal bearing aqueous solutions. Native seaweed varieties (Ascophyllum nodosum, Lessonia flavicans, Durvillea potatorum and Laminaria hyperborea) were selected on the basis of their varying algin composition as well as their characteristic mannuronic/guluronic acid content. Dealginated seaweed residues, i.e. waste materials arising during algin extraction from brown marine algae were also evaluated as potential metal biosorbent materials. The biosorbents showed significant metal sorption capacity for copp

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43

Blomster, Leena Jaanika. "Molecular and morphological approaches to the taxonomy of Enteromorpha (Chlorophyta)." Thesis, Queen's University Belfast, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.324827.

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44

Wikström, Sofia A. "Marine Seaweed Invasions : the Ecology of Introduced Fucus evanescens." Doctoral thesis, Stockholms universitet, Botaniska institutionen, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-132.

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Biological invasions are an important issue of global change and an increased understanding of invasion processes is of crucial importance for both conservation managers and international trade. In this thesis, I have studied the invasion of the brown seaweed Fucus evanescens, to investigate the fate and effect of a perennial, habitat-forming seaweed introduced to a coastal ecosystem. A long-term study of the spread of F. evanescens in Öresund (southern Sweden) showed that the species was able to expand its range quickly during the first 20 years after the introduction, but that the expansion

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45

Kratochvil, David. "A study of the metal biosorption process utilizing Sargassum seaweed biomass." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0002/NQ44480.pdf.

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46

Kratochvíl, David. "A study of the metal biosorption process utilizing Sargassum seaweed biomass /." Thesis, McGill University, 1997. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=34988.

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The innovative process of removal of toxic heavy metals from water by biosorption, using the dead biomass of Sargassum marine alga packed in flow-through columns, was examined. The mechanism of uptake of Cu 2+, Zn2+, Cd2+, Fe2+, and Cr(III) by the biomass was identified as ion exchange taking place at the weakly acidic functional groups embedded in the cellular matrix of the seaweed. After pretreatment with mineral acids, the cation exchange capacity of the biomass was approximately 2.3 meq/g of biomass dry weight which is comparable to the metal binding capacities of commercial ion exchange r

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47

Wells, Emma Claire. "Seaweed species biodiversity on intertidal rocky seashores in the British Isles." Thesis, Heriot-Watt University, 2002. http://hdl.handle.net/10399/1178.

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48

Crean, Caroline Sara. "Variation in female mate preference in the seaweed fly, Coelopa frigida." Thesis, University of Nottingham, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.243493.

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49

Shuker, David Michael. "Sexual selection and sexual conflict in the seaweed fly, Coelopa frigida." Thesis, University of Nottingham, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.285745.

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50

Gilburn, Andre Simon. "Sexual selection by female choice in the seaweed fly, Coelopa frigida." Thesis, University of Nottingham, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.315063.

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