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Dissertations / Theses on the topic 'Macroalgae communities'

Author: Grafiati

Published: 1 June 2024

Last updated: 31 July 2025

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1

Hyslop, Brian T. "The effects of colliery waste on littoral species and communities." Thesis, University of Sunderland, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.320539.

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2

Boller, Michael Louis. "Hydrodynamics of marine macroalgae : biotic and physical determinants of drag /." View online ; access limited to URI, 2005. http://0-wwwlib.umi.com.helin.uri.edu/dissertations/dlnow/3188836.

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3

Albakosh, Mouna Abdalhamed. "Identification and characterization of microorganisms associated with marine macroalgae Splachnidium rugosum." University of the Western Cape, 2014. http://hdl.handle.net/11394/4711.

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>Magister Scientiae - MSc<br>Marine macroalgae are known to carry diverse bacterial communities which interact with their hosts in both harmful and beneficial ways. Algae hosts provide the bacteria with a rich source of carbon in the form of carbohydrate polysaccharides such as fucoidan, agar and alginate, which the bacteria enzymatically degrade. Splachnidium rugosum is a brown alga (Phylum: Phaeophyta) that grows exclusively in the Southern Hemisphere along the temperate shores of South Africa, New Zealand and Australia. While several studies have investigated S. rugosum distribution and fuc

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4

Baggini, Cecilia. "Assessing the effects of long-term ocean acidification on benthic communities at CO2 seeps." Thesis, University of Plymouth, 2015. http://hdl.handle.net/10026.1/3321.

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Ocean acidification has the potential to profoundly affect marine ecosystems before the end of this century, but there are large uncertainties on its effects on temperate benthic communities. Volcanic CO2 seeps provide an opportunity to examine and improve our understanding of community responses to ocean acidification. In this thesis, two Mediterranean CO2 seeps (Methana in Greece and Vulcano in Italy) were used to investigate the responses of macroalgae and their epifaunal communities to increased CO2. Changes in plant-herbivore interactions at elevated CO2, as well as adaptation potential o

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5

Gilby, Ben L. "Variability in Marginal Coral Reef Communities: Implications for Marine Protected Area Management." Thesis, Griffith University, 2015. http://hdl.handle.net/10072/367997.

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Human impacts on ecosystem health and functioning are an important and increasing problem for marine ecosystems. In order to properly implement effective management techniques for the amelioration or reversal of these impacts, we require accurate information regarding the degree to which these systems vary naturally and what factors primarily drive this variability. Further, understanding where the influence of particular management interventions rank relative to other potential drivers of community structure is important in understanding potential and realised management success. In addition

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6

Young, John J. "Experimental harvests of macroalgae along the Oregon coast with an analysis of associated epiphytic diatom communities." Thesis, Thesis (M.S.)--University of Oregon, 2003, 2003. http://hdl.handle.net/1794/10076.

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7

Qvarfordt, Susanne. "Phytobenthic communities in the Baltic Sea - seasonal patterns in settlement and succession." Doctoral thesis, Stockholm : Department of Systems Ecology, Stockholm University, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-1153.

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8

Duran, Alain. "Effects of Multiple Ecological Drivers on Recruitment and Succession of Coral Reef Macroalgal Communities." FIU Digital Commons, 2013. http://digitalcommons.fiu.edu/etd/905.

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The study evaluated the effects of herbivory pressure, nutrient availability and potential propagule supply on recruitment and succession of coral reef macroalgal communities. Recruitment and succession tiles were placed in a nutrient-herbivory factorial experiment and macroalgal abundances were evaluated through time. Proportional abundances of macroalgal form-functional groups on recruitment and succession tiles were similar to field established communities within treatments, evidencing possible effects of adult macroalgae as propagule supply. Macroalgal abundance of recruitment tiles increa

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9

Wallenstein, Faria e. Maia de Macedo Francisco Luis. "Rocky shore macroalgae communities of the Azores (Portugal) and the British Isles : a comparison for the development of ecological quality assessment tools." Thesis, Heriot-Watt University, 2011. http://hdl.handle.net/10399/2437.

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This thesis focuses on intertidal seaweed communities on rocky shores and was planned to provide solid scientific background for the application of the EU Water Framework Directive (WFD) to the Azores based on the tool developed for British shores. The main structuring factors for rocky shore intertidal communities are briefly described and characterized for each of the two regions. Rocky shore intertidal seaweed communities of the British Isles and the Azores are compared based on presence/absence data recorded in single occasion visits to individual stretches of shore. The existing numerical

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10

Azcona, Alexandra. "The Use of Stable Isotopes to Assess Potential Effects of Algal Blooms on Seagrass and Macroalgae Communities in the Indian River Lagoon, Florida." Honors in the Major Thesis, University of Central Florida, 2014. http://digital.library.ucf.edu/cdm/ref/collection/ETH/id/1573.

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Algal blooms have caused significant losses in seagrass and macroalgae in the Indian River Lagoon, FL. To gain an understanding of these effects, samples of Gracilaria sp., Halodule wrightii, pinfish, and white mullet were taken throughout October and November of 2013. Samples from 2001 of Gracilaria sp., Halodule wrightii, Syringodium filiforme, Thalassia testudinum, pinfish, spotted seatrout, and white mullet were also obtained. Stable isotope data were obtained from these samples and compared by year and species. Halodule wrightii and pinfish had a significantly larger 2013 [delta]C13 value

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11

Prinsloo, Shireen. "The distribution and diversity of macroalgae in selected estuaries along the Eastern Cape coast of South Africa." Thesis, Nelson Mandela Metropolitan University, 2012. http://hdl.handle.net/10948/d1012314.

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The growth and accumulation of macroalgae in estuaries are a common sight throughout the world (Boyer and Fong, 2005). Because macroalgae establish such complex but important links with other components within an estuary, it is essential to know which variables control and regulate their occurrences. The type of algae that will occur in an estuary depends however, on the physical and chemical features of the particular estuary (Lobban and Harrison, 1994). The focus of this study was to document and provide a listing of algae from estuaries around the Eastern Cape coast of South Africa and desc

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12

Burel, Thomas. "Effet de l'hydrodynamisme sur la structure des communautés macroalgales et sur les interactions macroflore / macrofaune en zone intertidale." Thesis, Brest, 2020. http://www.theses.fr/2020BRES0019.

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Cette thèse vise à quantifier et à expliciter les effets de l’hydrodynamisme sur les biocénoses des estrans rocheux du Nord-Est Atlantique. Dans cette optique, plusieurs études ont été menées sur 14 sites de la pointe bretonne, à différentes échelles spatiales, de quelques mètres à une centaine de kilomètres. Pour étudier les variations de la structure des communautés de macroalgues et des assemblages à dominance macroalgale, deux méthodes d’échantillonnage biologique ont été utilisées pour la macroflore et la macrofaune. Un nouveau proxy de l’hydrodynamisme à petite échelle a été développé, l

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13

Collings, Greg. "Spatiotemporal variation of macroalgal communities of southern Fleurieu Peninsula, South Australia /." Title page, table of contents and summary only, 1996. http://web4.library.adelaide.edu.au/theses/09PH/09phc711.pdf.

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14

Turner, David John. "Effects of sedimentation on the structure of a phaeophycean dominated macroalgal community." Connect to this title online, 2004. http://hdl.handle.net/2440/37702.

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Macroalgae are abundant on shallow temperate reef environments, often forming complex communities that comprise several strata. In southern Australia, these assemblages are dominated by large canopy forming taxa from the Orders Laminariales and Fucales. The presence of subtidal fucoid macroalgae differentiates these communities from that elsewhere, and emphasises the need for local studies rather than relying on generalisations made elsewhere. Like most natural systems, temperate reefs are often threatened by human activity with degradation reported from many locations in close proximity to ur

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15

Monserrat, Barcelo Margalida. "Régression des forêts marines : causes et effets dans le cadre de leur conservation et restauration." Electronic Thesis or Diss., Université Côte d'Azur, 2023. http://www.theses.fr/2023COAZ4011.

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Les grandes algues brunes sont des espèces clés dans les écosystèmes marins des latitudes tempérées où elles forment les forêts marines, parmi les écosystèmes les plus productifs et diversifiés au monde. En Méditerranée, elles sont représentées par les espèces du genre Cystoseira sensu lato, pour la plupart endémiques et caractérisées par leur longue durée de vie et faible dispersion. Cependant, les impacts anthropogéniques causent leur régression, entrainant des changements abruptes vers des communautés moins complexes (communautés gazonnantes et déserts marins), rendant l'écosystème potentie

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16

Catania, Daniela. "L'influence des macroalgues sur la prolifération et la régulation des efflorescences du dinoflagellé benthique Ostreopsis cf. ovata." Thesis, Université Côte d'Azur (ComUE), 2017. http://www.theses.fr/2017AZUR4083/document.

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Les proliférations de microalgues peuvent être nocives. L'augmentation récente de la fréquence et de l’étendue géographique des efflorescences de dinoflagellés benthiques toxiques comme Ostreopsis cf. ovata peut poser de réels problèmes de santé publique. La côte méditerranéenne Nord-Occidentale (lieu de cette étude) est l'une des nombreuses régions méditerranéennes où les proliférations d'algues nuisibles représentent une menace pour l’économie touristique. Dans les années à venir, une attention particulière devra être portée à la gestion et la prévision des proliférations de ces microalgues

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17

Churchill, Helen Ruth. "The role of macroalgal morphology and community structure on the accumulation of sediment and the subsequent effects on the dynamics of marine intertidal communities." Thesis, University of Hull, 2009. http://hydra.hull.ac.uk/resources/hull:5760.

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This study examines the influence of intertidal macroalgae on sediment accumulation, and the effect of sediment cover on intertidal community structure. Three shores on the North Yorkshire coast, England, were used to investigate differences in the quantity of sediment trapped by ten morphologically different algal species, and the relationship between morphology and the quantity of sediment trapped. The quantity of sediment accumulated in quadrats of four different macroalgal communities (canopy, turf, canopy/turf and bare rock) was also examined. Differences in sediment cover and community s

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18

Mucciarelli, Valerie. "Community assembly in subtidal macroalgal communities: The importance of environmental gradients." Thesis, 2014. http://hdl.handle.net/1828/5302.

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As human activity along coastlines increase, degradation and destruction of coastal marine ecosystems around the globe will increase at an alarming rate. In an effort to mitigate degradation and destruction of coastal marine ecosystems, artificial reefs have been used in restoration and enhancement projects. As artificial reefs are the main method of restoring diversity to a degraded area, it is important to know the mechanisms that drive marine community assembly and diversity on those reefs. Understanding community assembly patterns of foundational species, in particular, may provide insi

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19

Santos, Marisa Alexandra Monteiro Batista dos. "Effects of macroalgae invasive species and temperature on estuarine sediments microbial communities and nitrogen biogeochemistry." Master's thesis, 2014. https://repositorio-aberto.up.pt/handle/10216/77820.

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20

Santos, Marisa Alexandra Monteiro Batista dos. "Effects of macroalgae invasive species and temperature on estuarine sediments microbial communities and nitrogen biogeochemistry." Dissertação, 2014. https://repositorio-aberto.up.pt/handle/10216/77820.

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21

Fowles, AE. "Assessing anthropogenic impacts on reef communities: patterns, indicators and processes." Thesis, 2017. https://eprints.utas.edu.au/23842/1/Fowles_whole_thesis.pdf.

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Estuaries have been favoured for human settlement, and since then have slowly deteriorated as a consequence of multiple and interacting anthropogenic impacts in their unique sheltered environments. The capacity to predict which urban impacts are most severely affecting benthic communities is essential for estuarine biological conservation. Understanding urban effects and key biological responses may help to determine where impacts take place, if effects are reversible, and how pollution affects flow through the estuarine ecosystem. In this thesis, I apply observational surveys and experimental

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22

Macedo, Francisco Luís Wallenstein Faria e. Maia de. "Rocky shore macroalgae communities of the Azores (Portugal) and the British Isles : a comparison for the development of ecological quality assessment tools." Doctoral thesis, 2011. http://hdl.handle.net/10400.3/1317.

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PhD Marine Biology<br>This thesis focuses on intertidal seaweed communities on rocky shores and was planned to provide solid scientific background for the application of the EU Water Framework Directive (WFD) to the Azores based on the tool developed for British shores. The main structuring factors for rocky shore intertidal communities are briefly described and characterized for each of the two regions. Rocky shore intertidal seaweed communities of the British Isles and the Azores are compared based on presence/absence data recorded in single occasion visits to individual stretches of shore.

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23

Short, George. "Variations in reef-associated fish communities in response to different benthic states in the east central Red Sea." Thesis, 2019. http://hdl.handle.net/10754/656295.

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Coral reefs are priority habitats which are vulnerable to natural and anthropogenic disturbances. These can cause phase shifts from coral habitat to degraded algal-dominated states – and consequent changes in the distribution, abundance and activity of associated fish species. In the eastern Red Sea, human-induced reef degradation is likely to increase with planned development of the Saudi Arabian coast and the changing climate. The present study therefore investigates the ecological effects of coral-algal phase shifts in reef-associated fish communities, using naturally occurring within-reef

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24

Fulton, Stella Elaine. "Effects of macroalgal removal on inshore coral reef communities and sedimentation dynamics." Thesis, 2022. https://researchonline.jcu.edu.au/77023/1/JCU_77023_Fulton_2022_thesis.pdf.

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Stella Fulton investigated the impact of removing macroalgae from degraded inshore reefs around Magnetic Island. She found that periodically removing macroalgae over three years led to significantly higher coral cover and reduced re-growth of macroalgae. Macroalgal removal may therefore be an effective strategy to assist coral recovery on degraded reefs.

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25

Nicholls, David John. "Eutrophication and excessive macroalgal growth in Lake Macquarie, New South Wales." 1999. http://www.library.unsw.edu.au/~thesis/adt-NUN/public/adt-NUN20001003.155914/index.html.

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26

Collings, Gregory James. "Spatiotemporal variation of macroalgal communities of southern Fleurieu Peninsula, South Australia / by Gregory James Collings." Thesis, 1996. http://hdl.handle.net/2440/18910.

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Bibliography: leaves 191-225.<br>2 v. : ill. (some col.), maps ; 30 cm.<br>Title page, contents and abstract only. The complete thesis in print form is available from the University Library.<br>The temporal dynamics of eight subtidal mixed macroalgal communities were quantified. The results were discussed in terms of the implications for sampling programs in the future and the reliability of previous work.<br>Thesis (Ph.D.)--University of Adelaide, Dept. of Botany, 1997?

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27

Collings, Gregory James. "Spatiotemporal variation of macroalgal communities of southern Fleurieu Peninsula, South Australia / by Gregory James Collings." 1996. http://hdl.handle.net/2440/18910.

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Bibliography: leaves 191-225.<br>2 v. : ill. (some col.), maps ; 30 cm.<br>Title page, contents and abstract only. The complete thesis in print form is available from the University Library.<br>The temporal dynamics of eight subtidal mixed macroalgal communities were quantified. The results were discussed in terms of the implications for sampling programs in the future and the reliability of previous work.<br>Thesis (Ph.D.)--University of Adelaide, Dept. of Botany, 1997?

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28

Azevedo, Jonas de. "What has changed in the macroalgal communities of the Portuguese coast over a 6-year period?" Master's thesis, 2019. https://hdl.handle.net/10216/125820.

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29

Azevedo, Jonas de. "What has changed in the macroalgal communities of the Portuguese coast over a 6-year period?" Dissertação, 2019. https://hdl.handle.net/10216/125820.

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