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Dissertations / Theses on the topic 'Sponges and corals'

Author: Grafiati

Published: 18 April 2022

Last updated: 30 July 2025

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1

PIEROZZI, JUNIOR Ivan. "Influ?ncia de esponjas no processo de aglutina??o de rodolitos e forma??o de recifes consolidados." Universidade Federal Rural do Rio de Janeiro, 2015. https://tede.ufrrj.br/jspui/handle/jspui/1308.

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Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2016-10-18T18:36:37Z No. of bitstreams: 1 2015 - Ivan Pierozzi Junior.pdf: 92591526 bytes, checksum: b6f151111ef71de5cd89f7d46f910fff (MD5)<br>Made available in DSpace on 2016-10-18T18:36:37Z (GMT). No. of bitstreams: 1 2015 - Ivan Pierozzi Junior.pdf: 92591526 bytes, checksum: b6f151111ef71de5cd89f7d46f910fff (MD5) Previous issue date: 2015-11-27<br>CAPES<br>Rhodolith bed has aroused growing interest of the scientific community, not being different to the Fernando de Noronha Archipelago (FNA). FNA rhodolith banks occur at depths of 10

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Fillinger, Laura [Verfasser], Claudio [Akademischer Betreuer] Richter, and André [Akademischer Betreuer] Freiwald. "Impact of climate change on the distribution of sponges and cold water corals in the Antarctic and Subantarctic / Laura Fillinger. Gutachter: Claudio Richter ; André Freiwald. Betreuer: Claudio Richter." Bremen : Staats- und Universitätsbibliothek Bremen, 2013. http://d-nb.info/1072077531/34.

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3

Halperin, Ari. "Distribution, Growth, and Impact of the Coral-Excavating Sponge, Cliona delitrix, on the Stony Coral Communities Offshore Southeast Florida." NSUWorks, 2014. http://nsuworks.nova.edu/occ_stuetd/26.

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Bioerosion is a major process that affects the carbonate balance on coral reefs, and excavating sponges from the genus Cliona are some of the most important bioeroders on Caribbean reefs. The orange boring sponge, Cliona delitrix, is an abundant excavating sponge offshore southeast Florida that frequently colonizes dead portions of live stony corals, killing live coral tissue as it grows. With the recent decline in coral cover attributed to combined environmental and anthropogenic stressors, the increasing abundance of excavating sponges poses yet another threat to the persistence of Caribbean

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4

Chaves-Fonnegra, Andia. "Increase of Excavating Sponges on Caribbean Coral Reefs: Reproduction, Dispersal, and Coral Deterioration." NSUWorks, 2014. http://nsuworks.nova.edu/occ_stuetd/5.

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Coral reefs ecosystems are deteriorating and facing dramatic changes. These changes suggest a shift in dominance from corals to other benthic organisms. Particularly in the Caribbean Sea, with corals dying, sponges have become the leading habitat-forming benthic animals. However, little is known about what life-history traits allow organisms to proliferate in a marine system that is undergoing change. Thus, the objective of this dissertation was to try to understand the current increase of encrusting excavating sponges on deteriorating Caribbean coral reefs through the study of reproduction, r

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Gonzalez, Rivero Manuel Alejandro. "The ecology of bioeroding sponges on Caribbean coral reefs." Thesis, University of Exeter, 2011. http://hdl.handle.net/10036/3574.

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Sponges contribute to large number of functions in coral reef ecosystems. Among these, bioerosion is perhaps one of the most widely studied, largely due to the important contribution of excavating sponges to the carbonate budget on coral reefs (up to 95 % of the total internal bioerosion). Despite our current knowledge, much of the literature is centred on individual-based observations, and little is known about their ecological role and interactions with other reef taxa in complex coral reef systems. The aim of this thesis was to quantify the ecological interactions of bioeroding sponges with

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6

Leong, Wai. "Patterns of resource allocation in Caribbean coral reef sponges." View electronic thesis (PDF), 2009. http://dl.uncw.edu/etd/2009-1/leongw/waileong.pdf.

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7

Southwell, Melissa W. Martens Christopher S. "Sponges impacts on coral reef nitrogen cycling, Key Largo, Florida." Chapel Hill, N.C. : University of North Carolina at Chapel Hill, 2007. http://dc.lib.unc.edu/u?/etd,756.

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Thesis (Ph. D.)--University of North Carolina at Chapel Hill, 2007.<br>Title from electronic title page (viewed Dec. 18, 2007). "... in partial fulfillment of the requirements for the degree Doctor of Philosophy in the Department of Marine Sciences." Discipline: Marine Sciences; Department/School: Marine Sciences.

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8

Negandhi, Karita L. "Microbial Communities with Emphasis on Coral Disease-Associated Bacteria within Florida Reef Sponges." NSUWorks, 2009. http://nsuworks.nova.edu/occ_stuetd/109.

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Previous studies have shown that bacteria associated with coral diseases are not found in the surrounding water column at detectable levels, yet at the same time, coral diseases are becoming more prominent. Sponges are coral reef residents, which expel filtered seawater that is practically sterile of microbes. Therefore sponges harbor very diverse and abundant microbial communities. This leads to the possibility that coral disease associated bacteria (CDAB) may be present within reef sponge microcosms. In order to identify internal microbes, nonculturable techniques including fluorescent in si

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9

Holmes, Katherine E. (Katherine Elizabeth). "The effects of eutrophication on clionid (Porifera) communities in Barbados, West Indies." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=23896.

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Samples of Porites porites rubble were collected from across three fringing reefs which lie along a eutrophication gradient in Barbados, West Indies. The coral skeleton fragments were examined for clionid sponges. Data collected from the reef crest and fore reef zones and from across the range of distances and depths were pooled for each reef to compare indices of sponge abundance along the eutrophication gradient. Significant differences between the reefs were found for the proportion of rubble invaded (ANCOVA, p = 0.004), number of invasions per sample (ANCOVA, p = 0.002), and number of spec

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10

Callahan, Michael K. "Distribution of clionid sponges in the Florida Keys National Marine Sanctuary (FKNMS), 2001-2003." [Tampa, Fla.] : University of South Florida, 2005. http://purl.fcla.edu/fcla/etd/SFE0001017.

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11

Silbiger, Nyssa Joy Lindquist Niels Lyle. "Impacts of sponge produced dissolved inorganic nitrogen on Caribbean coral reef seaweed communities." Chapel Hill, N.C. : University of North Carolina at Chapel Hill, 2009. http://dc.lib.unc.edu/u?/etd,2624.

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Thesis (M.S.)--University of North Carolina at Chapel Hill, 2009.<br>Title from electronic title page (viewed Oct. 5, 2009). "... in partial fulfillment of the requirements for the degree of Master of Science in the Department of Marine Sciences." Discipline: Marine Sciences; Department/School: Marine Sciences.

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12

Rix, Laura [Verfasser], Christian [Akademischer Betreuer] Wild, and Claudio [Akademischer Betreuer] Richter. "Carbon and nitrogen cycling by Red Sea coral reef sponges / Laura Rix. Betreuer: Christian Wild. Gutachter: Christian Wild ; Claudio Richter." Bremen : Staats- und Universitätsbibliothek Bremen, 2015. http://d-nb.info/1079652337/34.

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13

Davis, Katie S. "Use of a Towed Camera System along the west Florida shelf: A Case Study of the Florida Middle Grounds Benthic Marine Communities." Scholar Commons, 2018. https://scholarcommons.usf.edu/etd/7494.

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As technologies advance the study of ocean dynamics, new approaches to vexing problems of scale and process are becoming more widely available. Originally conceived as a tool primarily for indexing the abundance of near-bottom fishes, the Camera-based Assessment and Survey System (C-BASS) may also be an effective tool for monitoring benthic invertebrate resources vulnerable to natural and anthropogenic perturbations, and for characterizing the composition of benthic communities to inform spatial management. Using still images derived from the C-BASS video of benthic transects within the Florid

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14

Peddycoart, Melinda R. "Variations in Composition, Abundance and Cover of Reef Tract Sponge Assemblages in Broward County, Florida, 2002-2006." NSUWorks, 2010. http://nsuworks.nova.edu/occ_stuetd/210.

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Sponges are major macrofaunal components of coral reef ecosystems, often outnumbering corals in richness, abundance and coverage. Although reefs along southeastern Florida have exhibited substantial deterioration over the last few decades and are currently under intensive scrutiny, most investigations have omitted sponges. This study focuses on reef sponge assemblages along Broward County, Florida, from 2002 through 2006 and examines changes in sponge assemblage composition, areal coverage and abundance over time. The photographic database derives from an ongoing study of stony and soft coral

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15

McGrath, Emily Christine. "The Feasibility of Rubble-Binding Sponge Propagation for Use in Reef Restoration." Thesis, NSUWorks, 2012. https://nsuworks.nova.edu/occ_stuetd/176.

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A common injury type associated with vessel groundings on coral reefs is generation of coral rubble. As a substrate rubble is dynamic and can be mobilized by normal wave agitation, causing secondary damage to surviving corals and preventing coral larvae and invertebrates from surviving. Typical rubble management options include offsite removal and onsite stabilization using artificial materials. Sponges show promise as a restoration tool for rubble stabilization, especially sponges that are known to have rapid regeneration rates, low mortality, and the capability to quickly form attachment poi

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16

Waldman, Alanna D. "Spatial and temporal trends in the Xestospongia muta (giant barrel sponge) population on the Southeast Florida Reef Tract." Thesis, NSUWorks, 2019. https://nsuworks.nova.edu/occ_stuetd/514.

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Xestospongia muta, the giant barrel sponge, is a key component of coral reef benthic communities in Southeast Florida and the Caribbean. Xestospongia muta increases habitat complexity and stability, and filters large volumes of water, enhancing water quality and facilitating nutrient cycling. Therefore, it is important to investigate trends in the X. muta population on Southeast Florida reefs in response to anthropogenic stressors, changing environmental conditions and acute disturbances and how these events affect its ecological role in the benthic community. This study identified trends in X

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17

NEMBRINI, MATTIA. "CONTROLLING FACTORS ON THE DEPOSITIONAL ARCHITECTURE OF CARBONATE SYSTEMS: SEDIMENTOLOGY, FACIES, GEOMETRY, DIAGENESIS AND GEOCHEMISTRY OF EASTERN SARDINIA JURASSIC CARBONATES." Doctoral thesis, Università degli Studi di Milano, 2021. http://hdl.handle.net/2434/829369.

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L’evoluzione temporale e spaziale delle piattaforme carbonatiche e delle biocostruzioni è controllata dall’interazione di fattori globali (clima, variazioni eustatiche), regionali (tettonica) e fattori ambientali locali (nutrienti, penetrazione della luce e profondità) che influiscono sulle variazioni dell’accomodamento e la natura delle carbonate factories. La riorganizzazione delle placche tettoniche legata all’apertura della Tetide Alpina e le variazioni climatiche hanno influenzato direttamente le successioni carbonatiche Giurassiche, le quali registrano uno dei maggiori momenti di abbonda

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18

Sorres, Jonathan. "Isolement de métabolites secondaires d’invertébrés marins – Synthèse de dérivés hybrides dispacamide / 3-alkylpyridine et évaluation biologique." Thesis, Paris 11, 2012. http://www.theses.fr/2012PA112305.

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Le travail présenté dans cette thèse porte sur l’isolement de métabolites secondaires de trois invertébrés marins, ainsi que sur la synthèse de molécules hybrides, notamment à visée antifouling et inhibiteurs de kinases, inspirées des motifs naturels issus des familles dispacamides et 3-alkylpyridines. Les techniques spectroscopiques et les transformations chimiques ont été largement utilisées pour les déterminations structurales. Les nouveaux composés ont été évalués biologiquement.Le travail d’isolement sur le corail mou Sinularia vanderlandi a permis de mettre en évidence trois nouveaux com

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19

Alenezi, Saleh. "Micropalaeontology, palaeoenvironments and sequence stratigraphy of the Sulaiy Formation of eastern Saudi Arabia." Thesis, University of Plymouth, 2016. http://hdl.handle.net/10026.1/9330.

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The Sulaiy Formation, which is the oldest unit in the Lower Cretaceous succession, is conformably overlain by the Yamama Formation and it is a challenge to identify the precise age of the two formations using foraminifera and other microfossil assemblages. In the eastern side of Saudi Arabia, the Sulaiy Formation and the base of Yamama Formation are poorly studied. The main objectives of this study is to enhance the understanding of the Sulaiy Formation sequence stratigraphical correlation, regional lateral variations and palaeoenvironmental investigation. Lithological and semi-quantitative mi

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20

Fallon, Stewart John. "Environmental Records from Corals and Coralline Sponges." Phd thesis, 2000. http://hdl.handle.net/1885/107199.

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This research centers on the extraction of environmental information stored in the calcium carbonate skeletons of corals (Porites) and coralline sponges (Astrosclera willeyana). Elemental variations are measured in these samples using laser ablation inductively coupled plasma mass spectrometry. During this project, techniques were refined and developed to quantitatively measure major (B, Mg, Sr, Ba, U) and minor (Mn, Zn, Pb, REE’s) elemental abundances in corals and coralline sponges. This method was used to extract seasonal records from a hig

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21

Soares, Ana Sofia Carvalho. "Local ecological knowledge of vulnerable marine ecosystems of the Portuguese mainland continental shelf and upper slope." Master's thesis, 2021. http://hdl.handle.net/10773/33509.

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Sponges and corals form highly structured and vulnerable marine ecosystems (VMEs) that serve as refuge areas and feeding grounds for many marine species. Knowledge on the distribution of these VMEs is critical to ensure their sustainable management and conservation but is largely lacking in some areas. This study aimed to co-develop a knowledge baseline on the diversity and distribution of VME-indicator species (VMEIs) by assembling Local Ecological Knowledge (LEK) of professional fishers operating bottom-contacting gears in mainland North and Central Portugal. In total, 70 fishermen of

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22

Pascelli, Sant'Ana Santos Cecília. "Viruses in coral reef sponges." Thesis, 2019. https://researchonline.jcu.edu.au/64965/1/JCU_64965_Pascelli_2019_thesis.pdf.

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Cecília Pascelli studied viruses in coral reef sponges, identifying 50 viral morphotypes and over 25 viral families, which correlates with the sponge microbial symbionts. Cecília also showed that coral reef sponge viruses hold several metabolic genes which may provide competitive advantage for the host environmental acclimatisation.

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23

Kötter, Iris [Verfasser]. "Feeding ecology of coral reef sponges / vorgelegt von Iris Kötter." 2005. http://d-nb.info/975585738/34.

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24

Rickborn, Alissa Jean. "The spatial ecology of a coral reef sponge, aplysina fistularis." Thesis, 2014. https://hdl.handle.net/2144/15273.

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Sessile communities provide an ideal opportunity to understand how population interactions are structured in space, and in turn, how this structure influences population dynamics. The yellow tube sponge, Aplysina fistularis is common on Caribbean coral reefs and is involved in four main types of ecological interactions: symbiosis, predation, disease, and competition. We used spatial and multivariate analysis to describe the population structure of A. fistularis on the Belizean barrier reef, and consequently, how the observed spatial structure influenced sponge morphology and the frequency of p

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25

Wei, Kyo-Yen, and 魏國晏. "The Impact of a Coral-invading Sponge (Terpios hoshinota) on Coral Ecology: An Approach Using Scanning Electron Microscope." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/13966044673611867417.

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碩士<br>大仁科技大學<br>生物科技研究所<br>99<br>Terpios hoshinota is an encrusting sponge killing corals by growing over them. However, little is known about the interactions between two partners. Examining the Terpios-coral border with scanning electron microscopy (SEM) indicated at least three features displayed at the sponge front, including hairy tips, firm edge, and necrotic tissue. Almost all hairy tips were occupied with cyanobacteria, sponge tissue and spicules. Features of the Terpios-coral border exhibit no specificity to coral species, except for a hydrozoan coral Millepora exaesa displaying rever

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Abdul, Wahab Muhammad Azmi. "A holistic approach towards understanding population dynamics of a coral reef sponge." Thesis, 2014. https://researchonline.jcu.edu.au/41142/1/41142-abdul-wahab-2014-thesis.pdf.

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Understanding processes that contribute to population maintenance is critical to the management and conservation of species. Sponges (Phylum Porifera) are an evolutionary and ecologically significant group. However, information on biological and ecological processes, such as reproduction, larval dispersal, settlement, recruitment, survival and growth that influence sponge population dynamics is surprisingly limited. This study aimed to quantify pre- and post-settlement processes that affect the demographics and distribution of Carteriospongia foliascens (Thorectidae, Phyllospongiinae), a commo

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Fang, Shih-shou, and 方士碩. "The Growth and Propagation of a Coral-killing Black Sponge, Terpios hoshinota in Green Island, Taiwan." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/84471866999394649425.

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碩士<br>國立中山大學<br>海洋生物研究所<br>99<br>Terpios hoshinota is coral-killing sponge which grows and covers most stony corals in shallow waters. It was first discovered at Green Island in 2006, and have since killed a lot of coral, yet we know little about the physiology of Terpios hoshinota. This research focuses on the propagation and growth of the sponge. In the sexual reproduction part, we collected tissue samples in 2009 and 2010, the sperm cells were found only in Jun and Aug in 2009. The oocytes were found in Apr, Jul, and Aug. In 2010, embryos occurred. No lunar pattern was found in a high-frequ

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Lo, Kuang-liang, and 羅光良. "Studies on the Bioactive Diterpenoids from Taiwanese Sponge Ircinia formosana and Soft Corals Cespitularia hypotentaculata, Clavularia viridis, and Sinularia flexibilis." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/n7jpcf.

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博士<br>國立中山大學<br>海洋生物科技暨資源學系研究所<br>97<br>This dissertation mainly investigates the constituents of one species of sponge (Ircinia formosana) and three species of soft corals（Sinularia flexibilis、Cespitularia hypotentaculata and Clavularia viridis）. These organisms were extracted with EtOAc and analyzed them with chemical methods. Twenty three new natural products were isolated and the cytotoxicity of these copounds was tested and evaluated. Four new C22-sesterterpenoids were isolated from the sponge Ircinia formosana, and designated as irciformonins A-D (1-4). In the investigation of the soft c

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29

Chen, Kuan-yu, and 陳冠宇. "The population dynamic of a coral-killing black sponge, Terpios hoshinota at Green Island and Orchid Island." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/53404279548590824360.

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碩士<br>國立中山大學<br>海洋生物研究所<br>99<br>Terpios hoshinota is a blackish-gray cyanobacteriosponge encrusting on stony corals with fast expansion rates in shallow waters. The sponge population exploded at Green Island and Orchid Island during 2006 to 2008. Here, we surveyed at Green Island and Orchid Island in 2009 and 2010, compared the sponge densities, individual lengths, sponge coverage and scleractinian coral coverage between 2008 and 2010. We also tested the hypothesis that typhoon may play a role inhibiting the sponges by monitoring individual sponges before and after. In these three years, the

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30

Chen, Wei-Chen, and 陳威錚. "Studies on the chemical constituents from the Formosan soft coral Klyxum simplex and an Indonesian sponge Halichondria sp." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/45296668143992515826.

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碩士<br>國立中山大學<br>海洋資源學系研究所<br>93<br>In the study on the chemical constituents from the Formosan marine organisms, four steroids, including three cholanic acid type metabolites, deoxycholic acid 3,12-diacetate (1), deoxycholic acid 3,12-diacetate-24-methyl ester (2), 3α,7α,12α-triacetoxy-5β-cholanic acid (3), and a principal steroid, gorgosterol (4), were isolated from the soft coral Klyxum simplex, collected at southern Taiwan coast. The structures of steroids 1-4, were elucidated by extensive spectroscopic methods, particularly in 1D and 2D NMR experiments. To best of our knowledge, there is n

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Du, Preez Cherisse. "Resolving relationships between deep-sea benthic diversity and multi-scale topographic heterogeneity." Thesis, 2014. http://hdl.handle.net/1828/5828.

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Resolving diversity patterns and their underlying drivers has application for both ecological theory and ocean management. Because seafloor characteristics are often used to assess bottom habitat, I examined the relationship between deep-sea benthic (bottom-living) diversity and multi-scale topographic heterogeneity. Most work occurred on the Canadian Pacific continental shelf at Learmonth Bank with additional sites in Strait of Georgia (BC) and Gulf of Maine (Atlantic shelf). High-resolution species distribution and seafloor data were annotated from remotely operated vehicle benthic imagery s

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