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Dissertations / Theses on the topic 'Marine habitat'

Author: Grafiati
Published: 4 June 2021
Last updated: 25 July 2025

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1

Stevens, Tim, and n/a. "Mapping Benthic Habitats for Representation in Marine Protected Areas." Griffith University. School of Environmental and Applied Science, 2004. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20040303.124815.

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Virtually all marine conservation planning and management models in place or proposed have in common the need for improved scientific rigour in identifying and characterising the marine habitats encompassed. An emerging central theme in the last few years has been the concept of representativeness, or representative systems of Marine Protected Areas (MPAs). The habitat classification and mapping needed to incorporate considerations of representativeness into MPA planning must logically be carried out at the same scale at which management occurs. Management of highly protected areas occurs almo
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2

Stevens, Tim. "Mapping Benthic Habitats for Representation in Marine Protected Areas." Thesis, Griffith University, 2004. http://hdl.handle.net/10072/367557.

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Virtually all marine conservation planning and management models in place or proposed have in common the need for improved scientific rigour in identifying and characterising the marine habitats encompassed. An emerging central theme in the last few years has been the concept of representativeness, or representative systems of Marine Protected Areas (MPAs). The habitat classification and mapping needed to incorporate considerations of representativeness into MPA planning must logically be carried out at the same scale at which management occurs. Management of highly protected areas occurs almo
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3

Garpe, Kajsa. "Effects of habitat structure on tropical fish assemblages." Doctoral thesis, Stockholm University, Department of Zoology, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-6767.

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<p>Rates of habitat alteration and degradation are increasing worldwide due to anthropogenic influence. On coral reefs, the loss of live coral reduces structural complexity while facilitating algal increase. In many coastal lagoons seagrass and corals are cleared to make room for cultivated macroalgae. This thesis deals with reef and lagoon habitat structure and how fish assemblage patterns may be related to physical and biological features of the habitat. It further examines assemblage change following habitat disturbance. Four studies on East African coral reefs concluded that both the abund
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4

Breen, P. A. "Habitat-Based Spatial Planning for Marine Reserves." Thesis, Queen's University Belfast, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.527664.

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5

Christensen, Ole. "SUSHIMAP (Survey strategy and methodology for marine habitat mapping)." Doctoral thesis, Norwegian University of Science and Technology, Department of Electronics and Telecommunications, 2006. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-1916.

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<p>Bathymetrical mapping performed using multibeam sonar systems is widely used in marine science and for habitat mapping. The incoherent part of the multibeam data, the backscatter data, is less commonly used. Automatic classification of processed backscatter has a correlates well with three sediment classes, defined as fine-(clay-silt), medium- (sand) and coarse- (gravel–till) grained substrates. This relation is used directly as a theme in a modified habitat classification scheme, while a more detailed substrate classification is incorporated as another theme. This theme requires a manual i
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6

Yamagata, Yuko. "Iron isotopic signatures for marine animals of various habitat." Kyoto University, 2019. http://hdl.handle.net/2433/242621.

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7

au, M. Wildsmith@murdoch edu, and Michelle Wildsmith. "Relationships between benthic macroinvertebrate assemblages and habitat types in nearshore marine and estuarine waters along the lower west coast of Australia." Murdoch University, 2007. http://wwwlib.murdoch.edu.au/adt/browse/view/adt-MU20081029.93910.

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The following four broad aims were addressed in this study. (1) To ascertain whether the characteristics of the benthic macroinvertebrate assemblages within the different nearshore marine habitat types identified by Valesini et al. (2003) on the lower west coast of Australia differ significantly, and whether the pattern of those spatial differences matches those among the environmental characteristics that were used to distinguish those habitat types; (2) To develop a quantitative approach for classifying nearshore habitats in estuarine waters that employs readily-available data for a range of
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8

Wilson, Jacqueline A. "Habitat quality, competition, and recruitment processes in two marine gobies." [Gainesville, Fla.] : University of Florida, 2004. http://purl.fcla.edu/fcla/etd/UFE0004180.

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9

Moeller, Holly Villacorta. "On the economic optimality of marine reserves when fishing damages habitat." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/57574.

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Thesis (S.M.)--Joint Program in Biological Oceanography (Massachusetts Institute of Technology, Dept. of Biology; and the Woods Hole Oceanographic Institution), 2010.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student submitted PDF version of thesis.<br>Includes bibliographical references (p. 125-127).<br>In this thesis, I expand a spatially-explicit bioeconomic fishery model to include the negative effects of fishing effort on habitat quality. I consider two forms of ef
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10

Pile, Adele J. "Effects of the Habitat and Size-Specific Predation on the Ontogenetic Shift in Habitat use by Newly Settled Blue Crabs, Callinectes sapidus." W&M ScholarWorks, 1993. https://scholarworks.wm.edu/etd/1539617655.

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11

Marshall, Livingston Sinclair Jr. "Survival of juvenile queen conch, Strombus gigas, in natural habitats: Impact of prey, predator and habitat features." W&M ScholarWorks, 1992. https://scholarworks.wm.edu/etd/1539616765.

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In this dissertation, I experimentally examine predation-induced mortality upon juvenile queen conch, Strombus gigas, and assess the importance of select habitat predator and conch characteristics affecting predation intensity. Experiments were conducted during the summer and early fall of 1987, 1988, 1990 and 1991 in seagrass beds and adjacent sand flats near Lee Stocking Island, Exuma Cays, Bahamas. These experiments indicate that various factors act interactively to produce habitat-specific mortality rates in queen conch due to predation. These include (1) habitat type, whereby seagrass bed
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12

Orav-Kotta, Helen. "Habitat choice and feeding activity of benthic suspension feeders and mesograzers in the northern Baltic Sea /." Tartu, Estonia : Tartu University Press, 2004. http://dspace.utlib.ee/dspace/bitstream/10062/489/5/Kotta.pdf.

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13

DA, ROS ZAIRA. "Recovery and restoration of marine endangered habitats." Doctoral thesis, Università Politecnica delle Marche, 2020. http://hdl.handle.net/11566/274535.

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La biodiversità marina regola il funzionamento ecosistemico, responsabile della produzione di beni e servizi importanti per la biosfera ed il benessere umano. I cambiamenti climatici globali e le attività umane stanno alterando la biodiversità degli oceani ed il funzionamento ecosistemico. Al momento, partendo dalla consapevolezza che le sole misure di conservazione non sono sufficienti a invertire la degradazione degli ecosistemi, è riconosciuto che il restauro ambientale è una azione di cruciale importanza per far fronte a questa minaccia. Tuttavia, è necessaria una maggiore conoscenza scien
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14

Haley, Craig. "Habitat association and distribution of Nauticaris marionis at the Sub-Antarctic Prince Edward Islands." Master's thesis, University of Cape Town, 2016. http://hdl.handle.net/11427/20471.

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The habitat associations between the caridean shrimp Nauticaris marionis and sessile epibenthic assemblages and substratum types of the Sub-Antarctic Prince Edward Islands were investigated. Twenty five stations, varying in substratum type, depth and location on the shelf and slope around the islands were sampled photographically with a towed benthic camera sled. At each station the substratum type was classified, sessile epibenthic cover was quantified through the use of digital quadrats and shrimp density was estimated. Results add to the broadly described distribution patterns of N. marioni
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15

Zobrist, Erick Christian. "The Influence of Post-Settlement Mortality on Recruitment Patterns in a Soft-Bottom Habitat." W&M ScholarWorks, 1988. https://scholarworks.wm.edu/etd/1539617590.

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16

Langhamer, Olivia. "Wave energy conversion and the marine environment : Colonization patterns and habitat dynamics." Doctoral thesis, Uppsala universitet, Elektricitetslära, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-107193.

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A wave energy park has been established on the Swedish west coast outside Lysekil and pioneer work about its interactions with the marine environment has been conducted. So far, little is known about the effects of offshore energy installations on the marine environment, and this thesis assists in minimizing environmental risks as well as in enhancing potential positive effects on the marine environment. The Lysekil research site is situated about two kilometres offshore and has been under development since 2005. During this time 26 “environmental devices”, without generators, consisting of a
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17

Wyles, Kayleigh J. "Rocky shores : from habitat threat to marine awareness & well-being benefits." Thesis, University of Plymouth, 2014. http://hdl.handle.net/10026.1/3038.

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Previous psychological research has demonstrated the benefits of visiting natural environments, especially coastal areas. However, research within Marine Biology has shown that such visits can harm natural habitats. Consequently, this thesis uses an integrative approach to examine both the risks to the environment and benefits to the human visitors in the context of rocky shores (intertidal areas where solid rock predominates). This was investigated using seven studies that involved a range of methods. Perception-based surveys (Studies 1 & 2) explored the perceived impacts on the visitor, and
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18

Haglund, Ann-Louise. "Attached Bacterial Communities in Lakes – Habitat-Specific Differences." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-4627.

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19

Harwell, Heather D. "Habitat complexity and habitat function of native (Crassostrea virginica) and non-native (C. ariakensis) oysters in the Chesapeake Bay region." W&M ScholarWorks, 2010. https://scholarworks.wm.edu/etd/1539616687.

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Complex oyster reefs created by the Eastern oyster, Crassostrea virginica, though once prominent features of the Chesapeake Bay region, have become relatively scarce in comparison to historic descriptions. This decline, caused by a combination of overfishing, disease, habitat destruction and pollution, this decline continues despite substantial restoration efforts that have spanned decades. In response to this decline, the states of Virginia and Maryland considered the intentional introduction of the non-native Suminoe oyster, C. ariakensis. Previous studies questioned the reef-building capab
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20

Schulman, Jessica L. "Habitat Complexity as a Determinant of Juvenile Blue Crab Survival." W&M ScholarWorks, 1996. https://scholarworks.wm.edu/etd/1539617703.

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21

Hovel, Kevin. "The effect of seagrass habitat fragmentation on juvenile blue crab survival." W&M ScholarWorks, 1999. https://scholarworks.wm.edu/etd/1539616700.

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Habitat fragmentation leads to small, isolated habitat patches in which ecological processes may differ substantially from those in larger, continuous habitats. Seagrass is a structurally complex but fragmented subtidal habitat that serves as a refuge from predation for juveniles of the blue crab, Callinectes sapidus Rathbun. I compared the effects of eelgrass ( Zostera marina L.) patch size and shoot density on juvenile blue crab survival both before (June) and after (September) shoot defoliation and cownose ray disturbance changed eelgrass habitat, and used artificial seagrass to determine
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22

Wyanski, David M. "Patterns of Habitat Utilization in 0-Age Summer Flounder (Paralichthys dentatus)." W&M ScholarWorks, 1990. https://scholarworks.wm.edu/etd/1539617620.

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23

Searcy, Steven Philip. "Is Growth a Reliable Indicator of Essential Fish Habitat." NCSU, 2005. http://www.lib.ncsu.edu/theses/available/etd-11032005-100512/.

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Estuarine habitats serve as important nurseries for many species of juvenile fishes and invertebrates. Due to concerns about declining fishery stocks and habitat degradation, it is critical that the value of different habitats be evaluated, so that areas that are most important can be prioritized for habitat conservation and restoration. This dissertation used Atlantic croaker (Micropogonias undulatus) as a model species to quantitatively examine patterns of early juvenile nursery habitat use, factors influencing growth and mortality, and to test the widely held assumption that ?growth is a va
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24

Berry, Charlotte A. "Conch Population Demographics and Habitat Association Near Port Everglades Inlet, Florida." NSUWorks, 2014. http://nsuworks.nova.edu/occ_stuetd/19.

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The queen conch (Strombus gigas) is a large marine gastropod found throughout the tropical western Atlantic including Florida. Overfishing and habitat loss have led to Caribbean-wide population declines requiring regional protections. On Florida’s east coast, aggregations of conch were previously reported just south of a major shipping port near Ft. Lauderdale, unusually high latitude for the species. This study was designed to investigate the spatial extent and population demographics of the Ft. Lauderdale conch. In summer 2012, broad-scale population surveys were conducted to document ben
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25

Scales, Kylie Lisa. "The application of ocean front metrics for understanding habitat selection by marine predators." Thesis, University of Plymouth, 2015. http://hdl.handle.net/10026.1/3319.

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Marine predators such as seabirds, cetaceans, turtles, pinnipeds, sharks and large teleost fish are essential components of healthy, biologically diverse marine ecosystems. However, intense anthropogenic pressure on the global ocean is causing rapid and widespread change, and many predator populations are in decline. Conservation solutions are urgently required, yet only recently have we begun to comprehend how these animals interact with the vast and dynamic oceans that they inhabit. A better understanding of the mechanisms that underlie habitat selection at sea is critical to our knowledge o
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26

Wood, Megan. "Juvenile Blue Crab (Callinectes Sapidus) Response to Altered Nursery Habitat." W&M ScholarWorks, 2017. https://scholarworks.wm.edu/etd/1499449868.

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Habitats of Chesapeake Bay have been altered due to anthropogenic impacts and climate change. Due to these human disturbances, seagrasses have been extirpated from many areas in lower Chesapeake Bay and persisting beds face future losses as water temperatures continue to rise. Further loss of seagrass habitat will negatively impact juvenile blue crabs (Callinectes sapidus) that use seagrass beds as nursery grounds. Habitat degradation allows for more successful introductions of exotic species, and the communities formed from the mixing of native and exotic species are known as emerging ecosyst
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27

Hudak, Christine A. "Habitat Utilization by Bottlenose Dolphins (Tursiops truncatus) in Biscayne Bay, Florida." NSUWorks, 2003. http://nsuworks.nova.edu/occ_stuetd/116.

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Bottlenose dolphins (Tursiops truncatus) exhibit variable distribution patterns, depending upon their geographic location. Habitat utilization patterns in Biscayne Bay, Florida, were examined using the Biscayne Bay Bottlenose Dolphin Photo-ID database obtained from the National Oceanic and Atmospheric Administration (NOAA) Southeast Fisheries Science Center (SEFSC) Miami Laboratory. Habitat coverages in Biscayne Bay were obtained from the Atlas of Marine Resources Version 1.3B CD and the Biscayne Bay National Park CD. Dolphin sightings were overlaid on the habitat coverages using GIS Arcview s
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Lombana, Alfonso Vollmer. "Habitat Fragmentation in Transplanted Eelgrass (Zostera marina) Beds: Effects on Decapods and Fish." W&M ScholarWorks, 1999. https://scholarworks.wm.edu/etd/1539617976.

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29

Jones, Alice R. "The spatio-temporal distribution and habitat associations of marine mega-vertebrates off southwest UK." Thesis, University of Southampton, 2012. https://eprints.soton.ac.uk/351343/.

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This thesis uses data collected between 2007 and 2010 in an intensive, effort-based visual monitoring survey in southwest Cornwall, UK. The survey was carried out from a strategic watchpoint overlooking a regionally unique seabed feature, the Runnelstone Reef, which has previously been identified as key site for all three of the study’s target species: harbour porpoise Phocoena phocoena, basking shark Cetorhinus maximus and Balearic shearwater Puffinus mauretanicus. The location of the survey site is perceived as a productive, coastal marine ‘hotspot’ by local wildlife observers, eco-tour comp
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30

Johnson, Andrew Frederick. "Determining the habitat requirements of demersal fish for the design of marine protected areas." Thesis, Bangor University, 2012. https://research.bangor.ac.uk/portal/en/theses/determining-the-habitat-requirements-of-demersal-fish-for-the-design-of-marine-protected-areas(af07034d-cf7d-4839-9c55-59fdbaf5534d).html.

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Understanding the relationship between habitat and fish distribution is a central component in the recent shift towards ecosystem based fisheries management (EBFM). Determining the habitat requirements of commercially and ecologically important species will be essential if spatial management strategies such as marine protected areas (MP As) are to be used successfully to conserve marine resources. A review of demersal fish habitat research highlighted numerous areas lacking in this field of habitat science. These included the propensity for studies to focus on abiotic habitat variables such as
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31

Cicchetti, Giancarlo. "Habitat use, secondary production, and trophic export by salt marsh nekton in shallow waters." W&M ScholarWorks, 1998. https://scholarworks.wm.edu/etd/1539616611.

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I used 1.75 m&\sp2& drop rings and throw rings to sample communities of nekton at high and low tides in contiguous salt marshes, unvegetated flats, and seagrass beds (Ruppia maritima) of lower Chesapeake Bay. Thirty-two species of nekton were captured between June and October 1995, with a mean overall abundance of 28.6 inds m&\sp{lcub}-2{rcub}& and a mean biomass of 3.8 g m&\sp{lcub}-2{rcub}& (dry weight, dw). Blue crabs, Callinectes sapidus, were the biomass dominants and used seagrass and marsh edge habitats extensively from recruitment to maturity. Palaemonetes shrimp were the most abundant
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32

Spivak, Amanda C. "Bottom-up and top-down controls on sedimentary ecosystem functioning in a seagrass habitat." W&M ScholarWorks, 2008. https://scholarworks.wm.edu/etd/1539616861.

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Coastal seagrass ecosystems are complex habitats that are increasingly influenced by human perturbations. Disturbances that affect the strength of bottom-up (i.e. resource availability) and top-down (i.e. consumer) controls may also influence biomass distribution between trophic levels, sediment biogeochemistry, and seagrass ecosystem metabolism. Here, I experimentally tested how top-down and bottom-up perturbations interact with community structure (diversity, food chain length of epibenthic consumers) to alter sediment biogeochemistry and ecosystem metabolism in an experimental eelgrass (Zos
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33

Dunphy-Daly, Meagan Mná. "Temporal variation in dwarf sperm whale (Kogia sima) habitat use and group size off Great Abaco Island, the Bahamas." FIU Digital Commons, 2008. http://digitalcommons.fiu.edu/etd/3101.

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Dwarf sperm whales, Kogia sima, are among the most commonly stranded yet least known pelagic cetaceans. I assessed seasonal and spatial variation in dwarf sperm whale group size and abundance off Great Abaco Island, the Bahamas. After correcting for survey effort and variation in sighting efficiency among sea states, I found that dwarf sperm whale group size and habitat use varied seasonally. In summer, dwarf sperm whale groups were small (median = 2.5, range = 1-8) and were found only in the two deep habitats within the study area (slope 400-900 m, deep 900-1600 in). In winter, group sizes in
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34

Raw, Robert Nicolas Vause. "Population structure, site fidelity, and fine-scale habitat use of the broadnose sevengill shark, Notorynchus cepedianusat Pyramid rock, False Bay, South Africa." Master's thesis, University of Cape Town, 2012. http://hdl.handle.net/11427/11312.

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Includes bibliographical references.<br>The aims of this study were to investigate elements of the demographics, fine-scale habitat use and site fidelity of sevengill sharks. The study was conducted at an aggregation hotspot within a Marine Protected Area, near Miller’s Point in False Bay, South Africa.
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35

Garcia, Karla C. "Dean John A. Knauss Marine Policy Fellowship: An Internship with the NOAA Restoration Center." Miami University / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=miami1196262059.

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36

Matich, Philip. "Environmental and Individual Factors Shaping the Habitat Use and Trophic Interactions of Juvenile Bull Sharks (Carcharhinus leucas) in a Subtropical Estuary." FIU Digital Commons, 2014. http://digitalcommons.fiu.edu/etd/1236.

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Top predators serve important roles within their respective ecosystem through top-down and bottom-up effects, yet understanding how these roles vary among individuals within predator populations is still in its early stages. Such individuality can have important implications for the functional roles predators play within their respective ecosystems. Therefore, elucidating the factors that drive persistent individual differences within populations is crucial for understanding how individuals, and in turn populations, will respond to environmental changes and anthropogenic stressors, and the imp
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37

French, Emily D. "The Influence of Zostera marina and Ruppia maritima on Habitat Structure and Function in a Changing Environment in the Chesapeake Bay." W&M ScholarWorks, 2015. https://scholarworks.wm.edu/etd/1539617956.

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Seagrasses modify the coastal areas they occupy by trapping sediments and improving water clarity, providing habitat for marine animals, and cycling nutrients. Populations are in decline worldwide, and in the lower Chesapeake Bay, U.S., Zostera marina populations are decreasing due to poor water quality and high summertime temperatures. Ruppia maritima, a seagrass that is smaller, but has a greater tolerance of high temperatures than Z. marina, is replacing Z. marina in some areas. This study examined bed characteristics and microbial community structures of each seagrass species, as well as m
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38

PALIAGA, ENRICO MARIA. "Upper slope geomorphology of Sardinian southern continental margin, applications to habitat mapping supporting marine strategy." Doctoral thesis, Università degli Studi di Cagliari, 2016. http://hdl.handle.net/11584/266760.

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This work, framed within the Marine Strategy Framework Directive, is focused on Sardinian southern continental margins marine habitat mapping. Aim of this thesis is to produce predictive marine habitat mapping, starting from a detailed geomorphologic study integrated with biological and oceanographic data coming both from original direct surveys than from bibliographic data. Underwater remotely operated vehicles (ROV), coupled with multibeam echo-sounder (MBES), enabled to perform interpretative hypothesis validation, controlled sampling and detailed observation of specific mesophotic h
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39

Williams, Julie Marie. "Habitat Associations and Demography of Small Mammals in 4 Forest Cover Types on Quantico Marine Corps Base, Virginia." Thesis, Virginia Tech, 1998. http://hdl.handle.net/10919/9772.

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I examined small mammal demography and habitat associations in 4 forest cover types on Quantico Marine Corps Base, VA. Study sites included clearcut, shelterwood, mature-riparian, and mature-upland habitats. My primary objective was to determine whether the abundance, species composition and demographic characteristics (density, survival, reproductive effort) of small mammals varied with respect to forest cover type. Secondarily, I was interested in identifying patterns of small mammal habitat selection and the factors that influence those patterns at micro- and macroscales. Small mammals wer
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40

Hogg, Oliver Thomas. "An integrated ecological and geophysical approach to habitat mapping and its application in marine conservation." Thesis, University of Southampton, 2018. https://eprints.soton.ac.uk/424752/.

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Global biodiversity is in decline, with the marine environment experiencing significant and increasing anthropogenic pressures. As a response, very large (105–106 km2) marine protected areas (MPAs) have become the dominant form of environmental protection in the marine environment. At present, however, paucity in scientific sampling makes prioritising which regions of the ocean to protect, especially over such large spatial scales, particularly problematic. One such very large MPA, covering an area of over 1 million Km2, is located at the sub-Antarctic South Georgia and South Sandwich Islands
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41

Fazekas, Kuyer Josiah Jr. "Effects of Coral Reef Habitat Complexity on the Community Composition and Trophic Structure of Marine Fish Assemblages in Indonesia’s Wakatobi Marine National Park." Wright State University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=wright1567514980264114.

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42

Loose, Emily L. "Seasonal Movements, Habitat Utilization, and Comparative Scale Morphology of White Marlin (Kajikia albida) and Roundscale Spearfish (Tetrapturus georgii)." W&M ScholarWorks, 2014. https://scholarworks.wm.edu/etd/1539617949.

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Recent studies have demonstrated that the morphologically similar white marlin (Kajikia albida) and roundscale spearfish (Tetrapturus georgii) co-occur in the western North Atlantic, including the U.S. Mid‐Atlantic Bight. Differences in scale morphology have been proposed as one morphological character to discriminate these species, but a thorough analysis of scale morphology is lacking. Because the validity of the roundscale spearfish was not established until 2006, much of the biological information previously colle
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43

Wale, Matthew A. "The effects of anthropogenic noise playbacks on marine invertebrates." Thesis, Edinburgh Napier University, 2018. http://researchrepository.napier.ac.uk/Output/1255476.

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Anthropogenic sound has profoundly changed the acoustic environment of aquatic habitats, with growing evidence that even a short exposure to man-made sound sources can negatively affect marine organisms. Marine invertebrates have received little attention regarding their responses to anthropogenic sound, despite their pivotal role in marine ecosystems, and preliminary evidence of their sensitivity. In this thesis, I critically review the methods used in studies investigating the effects of anthropogenic noise on marine invertebrates. I identify methodological trends that have developed along t
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44

Ash, Jana K. "Benthic Invertebrate Communities and Habitat Characterization of the Pourtalès Terrace, Florida with Analysis of the Deepwater Coral Habitat Areas of Particular Concern and the East Hump Marine Protected Area." NSUWorks, 2015. http://nsuworks.nova.edu/occ_stuetd/382.

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The Pourtalès Terrace is a gently curved, narrow triangular platform that parallels the Florida Keys for 213 km running from southern Key Largo to between Key West and the Marquesas Keys. The main Terrace surface begins in 200 m and dips gently to approximately 450 m, where the Pourtalès Escarpment slopes steeply to the deep floor of the southern Straits of Florida. The Terrace platform exhibits a wide variety of Neogene-age geological features, including high-relief ledges, mounds, sinkholes and deep-water biogenic build-ups called bioherms. Previous research revealed dense and diverse benthi
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Machemer, Ethan G. P. "A Predictive Habitat Model for Rainbow Parrotfish Scarus guacamaia." NSUWorks, 2010. http://nsuworks.nova.edu/occ_stuetd/212.

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The rainbow parrotfish Scarus guacamaia is a prominent herbivore in the coastal waters of southeastern Florida whose life history is strongly linked to a dependence on both mangrove and coral reef habitats. Rainbow parrotfish in turn serve in maintaining the health of coral reefs by keeping algal populations in check. This study used NOAA Fisheries data from the Mangrove Visual Census and the Reef Visual Census in Biscayne Bay and Upper Florida Bay. Observations of abiotic factors at individual sites were used to correlate and predict presence and absence of this species. This was done to visu
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Davies, Jaime Selina. "Mapping deep-sea features in UK waters for use in marine protected area network design." Thesis, University of Plymouth, 2012. http://hdl.handle.net/10026.1/1200.

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With an increase in demand on deep-sea resources comes a need for appropriate and effective management of this ecosystem. The establishment of a representative network of deep-sea Marine Protected Areas offers one tool with which to address the conservation needs of the deep sea. While a number of deep-sea habitats have been identified as vulnerable to anthropogenic activities (e.g. cold-water coral reefs and sponge aggregations), poor knowledge of the distribution of these habitats hinders conservation efforts and network planning, and thus we need habitat maps. With improvements in acoustic
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Moberg, Emily Alison. "Optimal bioeconomic management of changing marine resources." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/106966.

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Thesis: Ph. D., Joint Program in Oceanography/Applied Ocean Science and Engineering (Massachusetts Institute of Technology, Department of Biology; and the Woods Hole Oceanographic Institution), 2016.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references.<br>Marine populations are increasingly subjected to changing conditions whether through harvest or through broad-scale habitat change. Historically, few models have accounted for such trends over time, and even fewer have been used to study how trends affect optimal harvests. I developed and analyzed several models th
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Rielly, Elizabeth Wheeler. "Spatial variation drives patterns of community composition and trophic relationships in a marine system." Diss., Temple University Libraries, 2015. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/345225.

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Biology<br>Ph.D.<br>Examining how ecological processes are influenced by spatial variation can provide valuable insights into how communities are formed and how they may change in dynamic landscapes. In this thesis I address three objectives surrounding the spatial and temporal variation in species’ recruitment and predation, the influence of habitat isolation on consumer-resource relationships, and the influence of habitat fragmentation on a multi-trophic system. I used marine invertebrates, specifically crustaceans, bivalves, and sessile species as a model system. First, I address the spatia
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Layman, Bruce Clare. "Role of Habitat Features and Chemical Cues in Substrate Selection by Blue Crab Megalopae: Evidence from Laboratory Experiments." W&M ScholarWorks, 1992. https://scholarworks.wm.edu/etd/1539617647.

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Dutton, Daniel J. "Habitat Utilization and Dive Characterization of Blue Marlin (Makaira nigricans) and White Marlin (Kajikia albida) in the Western Atlantic Ocean." W&M ScholarWorks, 2010. https://scholarworks.wm.edu/etd/1539617891.

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Blue marlin Makaira nigricans and white marlin Kajikia albida (formerly Tetrapturus albidus) are overfished in the Atlantic Ocean, with the vast majority of fishing mortality resulting from the pelagic longline fishery that targets tunas (Thunnus spp.) and swordfish Xiphias gladius. Time series of catch-per-unit-effort (CPUE) data have been fundamental to assessments of blue marlin and white marlin stocks, but these time series have been affected by a shift over time in pelagic longline fishing practices from shallow to deeper sets. One method for adjusting CPUE data for changes in fishing pra
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