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Dissertations / Theses on the topic 'Marine sponges'

Author: Grafiati

Published: 4 June 2021

Last updated: 4 May 2024

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1

Kalaitzis, John Alexander. "Chemical Investigations of Australian Marine Sponges." Thesis, Griffith University, 2005. http://hdl.handle.net/10072/365493.

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This thesis describes the isolation and structure elucidation of a series of natural products from six different marine sponges collected from Australian waters. A total of nineteen sponge metabolites were isolated, four of which had not been reported previously. The structures of these compounds were elucidated by spectroscopic methods. An investigation into two sponges from the Adocia genus revealed a series of novel compounds related to the proton pump inhibitor adociasulfate 1 (3.22). Adociasulfates 7 (3.24) and 8 (3.25), along with adociasulfate 1 were isolated from an Adocia aculeata col

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2

Mokhlesi, Amin [Verfasser]. "Natural Products from Marine Sponges / Amin Mokhlesi." Düsseldorf : Universitäts- und Landesbibliothek der Heinrich-Heine-Universität Düsseldorf, 2018. http://d-nb.info/1154306984/34.

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3

Park, Young Chul. "Chemical Investigation of Three Antarctic Marine Sponges." Scholar Commons, 2004. https://scholarcommons.usf.edu/etd/1190.

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This thesis describes the chemical investigation of three marine sponges from Antarctica and the total syntheses of natural products erebusinone (12) and its derivative, erebusinonamine (52). Investigation of the yellow Antarctic marine sponge Isodictya setifera resulted in the isolation of two secondary metabolites, purine analog (32) and 3-hydroxykynurenine (24). Chemical investigation of Isodictya setifera led to the isolation of six secondary metabolites which included 5-methyl-2-deoxycytidine (25), uridine (28), 2-deoxycytidine (31), homarine (37), hydroxyquinoline (33), 3-hydroxykynureni

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4

Gautschi, Jeffrey T. "Marine natural products from sponges and deep water, marine-derived fungi /." Diss., Digital Dissertations Database. Restricted to UC campuses, 2006. http://uclibs.org/PID/11984.

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5

Roper, Kathrein Elizabeth. "Cellular and molecular targets of allelochemicals from marine sponges /." [St. Lucia, Qld.], 2005. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe19101.pdf.

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6

Tabudravu, Jioji N. "Investigations of secondary metabolites from Fijian marine sponges." Thesis, University of Aberdeen, 2001. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU602042.

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The following thesis presents results from investigations of marine natural products. It is divided into 7 chapters consisting of an introduction, five chapters examining the metabolites from Fijian marine sponges and one chapter examining the secondary metabolites from the medicinal plant, kava {Piper methysticum). Two new psammaplins (psammaplin K and L), a new isomalabaricane triterpene monosaccharide, two new bromotyrosine alkaloids (purealidin S and purpureamine J) and two new cyclic peptides (axinellin C and wainunuamide), a new conformer of phakellistatin 2 together with other known sec

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7

Schmidt, Eric Whitney. "Marine sponges and symbionts : chemical and biological studies /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 1999. http://wwwlib.umi.com/cr/ucsd/fullcit?p3035433.

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8

BASSOTTI, ELISA. "Heavy metals in marine organisms. Mediterranean and Antarctic marine sponges and bivalves." Doctoral thesis, Università Politecnica delle Marche, 2010. http://hdl.handle.net/11566/242161.

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9

Kim, Tae Kyung. "Bioactive compound-producing symbiotic bacteria from marine sponge species : cultural, gene retrieval, and metagenomic studies /." [St. Lucia, Qld.], 2006. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe19506.pdf.

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10

Antunes, Edith Martins. "Pyrroloiminoquinone metabolites from South African Latrunculid sponges." Thesis, Rhodes University, 2003. http://eprints.ru.ac.za/215/.

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11

Segraves, Nathaniel Lee. "Chemical investigation of biologically active alkaloids from marine sponges /." Diss., Digital Dissertations Database. Restricted to UC campuses, 2005. http://uclibs.org/PID/11984.

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12

Mani, Luke. "Antiplasmodial compounds from marine sponges of the Solomon Islands." Toulouse 3, 2010. http://www.theses.fr/2010TOU30280.

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Dans le cadre de la recherche de nouvelles molécules antipaludiques, une espèce d'Haliclona et quatre lots de l'éponge Aplysina ianthelliformis ont été étudiées pour fournir 22 composés, dont sept sont nouveaux 141-147. Un produit connu, l'haliclonacyclamine A 129, qui a montré ici une activité in vitro sur des souches de Plasmodium falciparum FCB1 résistantes à la chloroquine avec une CI50 de 98nM et un index de sélectivité (activité Antipalsmodiale/cytotoxicité) de 57 et 67 déterminé respectivement sur cellules MVF7 et Véro. Testée in vivo sur le modèle souris, l'haliclonacyclamine A 129 a m

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13

Romeril, Stuart P. "Synthesis and structural elucidation of the Bis-3-alkylpyridine alkaloid pyrinodemin A and other monomeric alkaloids." Thesis, University of Oxford, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.288526.

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14

López, Acosta María. "Silicon consumption by marine sponges: an empirical approach and its ecological implications." Doctoral thesis, Universitat de Barcelona, 2018. http://hdl.handle.net/10803/663476.

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Silicon (Si), in its dissolved form of silicic acid (DSi), is a key nutrient in the ocean. The availability of such nutrient in marine ecosystems is regulated through its use by silica-secreting organisms, a variety of groups including protists, algae, and animals that consume DSi to build their silica (BSi) skeletons. The interest in determining how Si cycles in the ocean is high, since it interacts with the cycling of other major nutrients and ocean primary productivity. Because diatoms are the most abundant Si users, the scientific attempts to quantify the Si utilization in the ocean have

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15

Yang, Lai Hung. "Antifouling compounds from the marine sponge acanthella cavernosa and its associated microbes /." View abstract or full-text, 2006. http://library.ust.hk/cgi/db/thesis.pl?AMCE%202006%20YANG.

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16

Lerata, Mookho Sylvia. "Discovery of cytotoxic natural products from South African marine sponges." University of the Western Cape, 2018. http://hdl.handle.net/11394/6447.

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Magister Pharmaceuticae - Mpharm<br>Cancer is a major health problem worldwide and killing millions of people each year. The use of natural products as chemotherapeutic agents is well established, however, many of the currently available drugs are associated with undesirable side effects and high toxicity. Furthermore, the development of drug resistant cancers makes the search for anticancer lead compounds a priority. In this study a library of prefractionated marine sponge extracts was established and used to prioritise samples for isolation of bioactive metabolites. From the generated librar

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17

Griffiths, Sarah Miriam. "Molecular approaches in conservation and ecology research in marine sponges." Thesis, Manchester Metropolitan University, 2018. http://e-space.mmu.ac.uk/620378/.

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Marine ecosystems face a challenging future as a result of human activity, and as such, it is vital to understand the ecology of marine organisms in order to effectively conserve them. Increasingly, molecular ecology tools are used for this purpose. In this thesis, I developed molecular resources for the study of sponges, an ecologically important and diverse marine group. Firstly, I developed a bioinformatics pipeline for the de novo isolation of microsatellites - genetic markers used to study intraspecific genetic diversity. Using this method, I characterised microsatellites for two Tropical

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18

Hagos, Selam. "Chemical Investigation of Bioactive Marine Extracts." Scholar Commons, 2018. https://scholarcommons.usf.edu/etd/7301.

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Natural products have been a fundamental source of medicinal scaffolds for decades; with sixty percent of marketed drugs. Many synthetic chemists are focused on synthesizing potent and nontoxic compounds for pharmaceutical targets, however, nature is still proving to be a source of new bioactive compounds. Produced by the host organism for defense, reproduction and communication, secondary metabolites also demonstrate promising bioactivity against human pathogens. Hence, natural product chemists continue their quest for new leads. As a continuation

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19

Wren, Stephen P. "Studies towards the total synthesis of the marine-derived immunosuppressant discodermolide." Thesis, University of Cambridge, 1995. https://www.repository.cam.ac.uk/handle/1810/271996.

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20

Burkhart, Tandace L. "The Search for Novel Sponge genes: Comparative Analysis of Gene Expression in Multiple Sponges." NSUWorks, 2012. http://nsuworks.nova.edu/occ_stuetd/194.

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This project focuses on the use of sponge genetic transcripts in the form of expressed sequence tags (ESTs) readily available in Genbank to search for novel genes using bioinformatics analysis tools. Marine sponge species are known to house a diversity of marine microbes and are known as the ‘living fossils’ of the animal kingdom because of the large number of ancient genes they house. Genomic mining can be a useful tool in discovering these orthologous genes. This study utilized the techniques of genomic mining of 11 previously described sponge species transcripts. The results of this study p

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21

Firkin, Catherine R. "A biomimetic approach to the synthesis of xestospongin A." Thesis, University of Oxford, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.389208.

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22

McMurray, Steven E. "Demography of the giant barrel sponge Xestospongia muta in the Florida Keys." View electronic thesis, 2008. http://dl.uncw.edu/etd/2008-3/r1/mcmurrays/stevenmcmurray.pdf.

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23

Turon, Rodrigo Marta. "Macro- and micro -symbioses involving sponges: Ecological roles in the marine benthos." Doctoral thesis, Universitat de Barcelona, 2020. http://hdl.handle.net/10803/668685.

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The symbiotic lifestyle represents a fundamental contribution to the diversity of marine ecosystems. Sponges are ideal models to study symbiotic relationships from evolutionary and ecological points of view since they are the most ancient metazoans on Earth, are ubiquitous in the marine benthos, and establish complex symbiosis with both prokaryotes and animals, which in turn harbour their own bacterial communities. In this thesis, we aim to go deeper into the mechanisms by which sponges establish symbiotic associations with members of the three domains of life, combining taxonomical, ecologi

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24

Rubio, Brent Kawika. "Bioactive natural products for global health from Papua New Guinea marine sponges /." Diss., Digital Dissertations Database. Restricted to UC campuses, 2008. http://uclibs.org/PID/11984.

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25

Khokhar, Shahan. "Chemical Investigations of Australian Marine Sponges Using Experimental and Theoretical NMR Spectroscopy." Thesis, Griffith University, 2015. http://hdl.handle.net/10072/367252.

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This thesis is divided into two parts (A and B). Our overall aim was to isolate and characterize natural products from Australian marine sponges. The uniqueness of this thesis arises from the application of Density Functional Theory (DFT), a quantum mechanical modelling method, which can be used to help elucidate and confirm molecular structures. DFT calculations, and in particular, DFT-NMR (Nuclear Magnetic Resonance) calculations, are still in their relative infancy. The research presented in Part A exemplifies DFT-NMR as a powerful technique, which can be added to a natural product chemist’

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26

Habener, Leesa. "Investigating and comparing chemical and biological variation of marine sponges (phylum Porifera)." Thesis, Griffith University, 2018. http://hdl.handle.net/10072/382720.

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The work completed in this PhD thesis investigates and compares the chemical and biological variation of marine sponges. A comprehensive literature review of compounds isolated from the family Mycalidae was completed to characterise the known chemical diversity of the family. In total 190 compounds were reported from 40 taxa comprising a range of structure classes that include alkaloids, polyketides, terpene endoperoxides, peptides, and lipids. The family is identified as a good target for biodiscovery; macrocyclic polyketides display potent cytotoxicity (LC50 <1 μM), and alkaloids (pyrrole de

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27

Hanekom, Thea. "Screening bacterial symbionts of marine invertebrates for ribosomally synthesized natural products." University of the Western Cape, 2016. http://hdl.handle.net/11394/5441.

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>Magister Scientiae - MSc<br>Pharmaceutical research and development strategies rely on the constant discovery of novel natural products as potential drugs. Recent studies have shown that the microorganisms associated with sponges are the true producers of some previously isolated compounds. This study created a large collection of bacterial symbionts associated with the South African marine sponge, Hamacantha esperioides. The bioactivity assays performed, showed that 44 isolates produced compounds with antimicrobial or anti-inflammatory activity. The successful identification of novel s

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28

Matobole, Relebohile Matthew. "Matrix comparison of isolation conditions for secondary metabolite producing marine sponge associated bacteria." University of the Western Cape, 2015. http://hdl.handle.net/11394/4754.

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>Magister Scientiae - MSc<br>The discovery of novel secondary metabolites has declined significantly in recent years whereas there is a rise in the number of multi-drug resistant pathogens and other types of diseases. The decline in natural product discovery was due to high rediscovery of already known compounds and the costs in developing natural products. As a result pharmaceutical companies lost interest in investing in natural product discovery. However, there is a renewed interest in marine sponge associated microorganisms as a rich and untapped source of secondary metabolites. The object

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29

Crowe, Stacie E. "Abundance and Distribution of Commensal Amphipods From Common Marine Sponges of Southeast Florida." NSUWorks, 2001. http://nsuworks.nova.edu/occ_stuetd/306.

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Marine sponges were examined from shallow waters of southeast Florida and the Florida Keys to determine species composition and distribution of commensal amphipod crustaceans from shallow reef, mangrove, and seagrass habitats. Twenty sponge species were investigated during this study, sixteen of which housed amphipods in the families Colomastigidae and/or Leucothoidae. Six species of commensal amphipods were identified. Leucothoe spinicarpa (Abildgaard) species "complex" was the most dominant amphipod commensal, representing 63% of the total amphipods collected. The L. spinicarpa "complex" con

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30

Daletos, Georgios [Verfasser]. "Isolation and Structure Elucidation of Bioactive Secondary Metabolites from Marine Sponges / Georgios Daletos." Düsseldorf : Universitäts- und Landesbibliothek der Heinrich-Heine-Universität Düsseldorf, 2016. http://d-nb.info/1101693908/34.

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31

Hatton, Christopher Martin. "Exploring marine sponges as a source of novel chemical entities for drug development." Thesis, Cardiff University, 2015. http://orca.cf.ac.uk/74792/.

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Antibacterial resistant infections are one of the most challenging problems affecting healthcare and have developed through the overuse of antibiotics and a shortage of new treatments progressing to market. Natural products are the initial source of most antibiotics currently available and marine sponges are a known resource of novel antibacterial compounds; although well-‐studied marine sponges found in UK waters have been scarcely explored. An examination of the chemical research on sponges identified previously unstudied species for collection in both Greece and Wales. Sequential solvent g

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32

Wegerski, Christopher John. "Chemistry under the sea : secondary metabolites from marine sponges of Papua New Guinea /." Diss., Digital Dissertations Database. Restricted to UC campuses, 2007. http://uclibs.org/PID/11984.

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33

Mohamed, Naglaa M. "Ecophysiology of microbial communities associated with marine sponges (Ircinia strobilina) and (Mycale laxissima)." College Park, Md.: University of Maryland, 2007. http://hdl.handle.net/1903/7722.

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Thesis (Ph. D.) -- University of Maryland, College Park, 2007.<br>Thesis research directed by: Marine, Estuarine, Environmental Sciences Graduate Program. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

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34

Spring, David R. "Studies on the biomimetic synthesis of the manzamine alkaloids." Thesis, University of Oxford, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.268166.

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35

Watson, Daniel John. "Studies directed towards the total asymmetric synthesis of Altohyrtin A." Thesis, University of Liverpool, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364263.

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36

Cebrian, Pujol Emma. "Sublethal effects of heavy metal contamination on marine sponges: Responses at different biological levels." Doctoral thesis, Universitat de Barcelona, 2007. http://hdl.handle.net/10803/805.

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Many antrophic activities release pollutants to the marine environment. Among them heavy metals are of great importance, since they are conservative pollutants, which can be accumulated through trophy chains. Sometimes, the liberation to the marine waters is acute and drastic, leading to massive mortalities. However, more often, the liberation is by means of low and chronic concentrations. The main objective of the present thesis is to analyze the sponge responses in face to sublethal concentrations of heavy metals and to determine, if it is possible, whether they can be used as biomonitors of

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37

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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38

Swasono, Respati Tri. "Bioactive secondary metabolites from Australian invertebrates, Indonesian marine sponges, and an Indonesian terrestrial plant /." [St. Lucia, Qld.], 2006. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe19275.pdf.

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39

Abualreesh, Heba. "Screening for antibacterial metabolites in marine sponges collected from the coastline of Sri Lanka." Thesis, Uppsala universitet, Farmakognosi, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-451690.

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Natural products and their derivatives have and are still used by humans for various health ailments due to their rich sources of drug discovery. New biologically active compounds from natural products play a key role in drug development. Marine sponges and their associated microbes contain a lot of bioactive compounds that are potential for drug development. These compounds produce chemical compounds with useful pharmaceutical properties such as antitumor, anti-infective, anti-inflammatory, and antibacterial properties. The main focus of this project was on the antibacterial activity of six d

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40

MAZZELLA, VALERIO. "Microbiome, metabolic and phenotypic traits in the adaptability of marine sponges to Ocean Acidification." Doctoral thesis, Università Politecnica delle Marche, 2021. http://hdl.handle.net/11566/291001.

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Il progressivo incremento delle emissioni di CO2 in atmosfera dovuto alle attività antropiche ed il conseguente assorbimento da parte degli oceani stanno determinando importanti modificazioni del sistema carbonatico e una diminuzione del pH nei mari a livello globale. Questo fenomeno, noto come acidificazione oceanica, è atteso determinare nei prossimi decenni profonde modificazioni della biodiversità e nel funzionamento degli ecosistemi marini. In particolare, ci si aspetta un forte declino degli organismi calcificanti, mentre organismi non calcificanti, o fototrofi potrebbero essere favoriti

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41

Hassanzada, Caidra Elizabeth. "Biodiversity and Ecological Dynamics of Sciophilous Benthic Communities on Artificial Plates: Emphasis on Reef Sponges." NSUWorks, 2015. http://nsuworks.nova.edu/occ_stuetd/390.

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Low light intensity habitats harbor unique sciophilous benthic communities and are a source of novel and unique sponge fauna. However, the community structure of these habitats is poorly studied to date. Thus, this study attempts to understand the composition and structure of sciophilous sponge populations in southeast Florida. Fifty limestone plates were placed on a shallow reef in Fort Lauderdale for two years (2010-2012). To identify the sponge community and their patterns over time, all plates were photographed at the end of each year. Then, samples were taken from each of the live sponge

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42

Lira, Simone Possedente de. "\"Metabólitos secundários biologicamente ativos isolados de esponjas marinhas e do fungo Beauveria felina de origem marinha\"." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/75/75132/tde-05062007-112443/.

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Neste trabalho descreve-se o estudo química dos extratos de quatro esponjas e dois fungos de origem marinha oriundos da costa do Brasil. Os extratos de três esponjas (Petromica ciocalyptoides, Topsentia ophiraphidites e Callyspongia sp.) apresentaram atividade inibitória à enzima adenosina fosforribosil transferase de Leishmania tarentolae. A partir desses extratos foram isolados 4 compostos. O trissulafato de halistanol, isolado das esponjas P. ciocalyptoides e T. ophiraphidites, e o ilhabelanol, ilhabreno e isoakaterpina, isolados da esponja Callyspongia sp. A partir do extrato bruto da espo

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43

Hedner, Erik. "Bioactive Compounds in the Chemical Defence of Marine Sponges : Structure-Activity Relationships and Pharmacological Targets." Doctoral thesis, Uppsala University, Division of Pharmacognosy, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-8218.

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<p>Marine invertebrates, in particular sponges, represent a source of a wide range of secondary metabolites, many of which have been attributed various defensive capabilities against environmental stress factors. In this thesis sponge-derived low-molecular peptide-like compounds and associated analogs are investigated for bioactivity and pharmacological targets. </p><p>The compound bromobenzisoxazolone barettin (cyclo[(6-bromo-8-(6-bromo-benzioxazol -3(1H)-one)-8-hydroxy)tryptophan)]arginine) was isolated from the sponge <i>Geodia barretti</i> and its ability to inhibit larval settlement of th

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44

Höller, Ulrich. "Isolation, biological activity and secondary metabolite investigations of marine-derived fungi and selected host sponges." [S.l.] : [s.n.], 1999. http://www.gbv.de/dms/bs/toc/271061243.pdf.

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45

Pimentel, Elardo Sheila Marie. "Novel anti-infective secondary metabolites and biosynthetic gene clusters from actinomycetes associated with marine sponges." Doctoral thesis, kostenfrei, 2008. https://nbn-resolving.org/urn:nbn:de:bvb:20-opus-40463.

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Marine sponges (Porifera) harbor diverse microbial communities within their mesohyl, among them representatives of the phylum Actinobacteria, commonly known as actinomycetes. Actinomycetes are prolific producers of pharmacologically important compounds and are responsible for producing the majority of antibiotics. The main aim of this Ph.D. study was to investigate the metabolic potential of the sponge-associated actinomycetes to produce novel anti-infective agents. The first aim was to cultivate actinomycetes derived from different marine sponges. 16S rDNA sequencing revealed that the strains

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46

Tucker, David John, and n/a. "An Investigation of the Chemical Constituents of Two Species of Marine Sponge." Griffith University. Division of Science and Technology, 1990. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20050826.155059.

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An investigation of the dichioromethane extract of the sponge, Xestospongia testudinaria indicated that the extract was composed of approximately 40% sterols, 30% saturated fatty acids, 10% mono-unsaturated fatty acids and 20% poly-unsaturated acids. The sterol profile was found to vary between two collections of the sponge. In the first collection the major sterol was the C30 compound, xestosterol (4), which had not previously been reported to occur in this species. In the second collection there was a wider distribution of components with cholesterol (2a) being a major constituent and xestos

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47

Tucker, David John. "An Investigation of the Chemical Constituents of Two Species of Marine Sponge." Thesis, Griffith University, 1990. http://hdl.handle.net/10072/367459.

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An investigation of the dichioromethane extract of the sponge, Xestospongia testudinaria indicated that the extract was composed of approximately 40% sterols, 30% saturated fatty acids, 10% mono-unsaturated fatty acids and 20% poly-unsaturated acids. The sterol profile was found to vary between two collections of the sponge. In the first collection the major sterol was the C30 compound, xestosterol (4), which had not previously been reported to occur in this species. In the second collection there was a wider distribution of components with cholesterol (2a) being a major constituent and xestos

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48

Knestrick, Matthew A. "From Florida to Antarctica: Dereplication Strategies and Chemical Investigations of Marine Organisms." Scholar Commons, 2018. https://scholarcommons.usf.edu/etd/7635.

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In the fight against disease and illness, nature has provided mankind some of our best therapeutics in the form of secondary metabolites. The plant, fungi and animal phyla inhabiting the Earth produce diverse and unique chemistry that can be used in our fight against disease. In the growing threat of drug resistance and pathogen evolution, the field of natural products chemistry strives to explore new biological and chemical diversity sources, and develop innovative methodology to identify and isolate new chemistry faster than ever. The dissertation herein presented is one such effort to find

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49

Ismail, Noraznawati. "Interactions between sponges and marine bacteria as a route to the discovery of novel bioactive compounds." Thesis, Heriot-Watt University, 2006. http://hdl.handle.net/10399/2076.

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The bacterial community architecture associated with four species of sponges, Halichondria panicea, Suberites domuncula, S. carnosus and Pachymatismajohnstonia 'was investigated using culture-dependent and culture-independent strategies. Marine '/ agar was found to be the best of several media used for cultivation of culturable bacteria : associated with sponges. Molecular methods, including denaturing gradient gel ,electrophoresis (DGGE), 16S rDNA cloning and sequence analysis suggested a : bacterial community different from that identified using culture-dependent methods. DGGE can provide a

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50

McQuillan, Lea. "Species richness, density and cover of sponge assemblages on temperate reefs off Perth, Western Australia." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2006. https://ro.ecu.edu.au/theses/359.

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Sponges were the dominant faunal benthic group, occupying 30 -50% of the limestone reef surface and displaying high diversity (>240 sponge species) on subtidal temperate reefs off Perth, Western Australia. Despite this high diversity there was little variation in composition among the six different sites sampled. However, there was within-site heterogeneity of sponge assemblages which has been ascribed to small-scale variation in light and sedimentation/abrasion rates. Differences in sponge assemblages were also detected between sampling times, species richness and sponge density were hi

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