Tran, Hai Yen

Cette recherche porte sur des modélisation des évolutions à long terme du trait de côtes, dans laquelle on propose un modèle qui combine à la fois une contribution des processus cross-shore et celle de processus longshore pour améliorer les capacités prédictives. Le modèle cross-shore de Splinter et al. (2014) est ré-implémenté dans un but de comparaison avec le modèle combiné. Nous présentons un modèle longshore simple basé sur une approche "one-line" moyenne dans le temps. L’analyse de ce modè...

Mbaru, Emmanuel Kakunde

The marine fishery in Kenya is predominantly small-scale and artisanal with about 11,000 fishers intensely fishing near shore coastal reefs using minimally selective fishing gears. A large majority (88%) of fishers use outdated equipment such as basket traps, beach seines, hand lines (hook and lines), fence traps, gillnets, spearguns and cast nets. Handmade canoes propelled by paddles (kasia) or sail power are used to access offshore waters, while only a few fishers have motorized boats. Althoug...

Jolly, J L

No description available.

Palmer, Bronwyn Jane

The coastal zone accommodates some of the most diverse ecosystems in the world and offers a wide range of ecosystem goods and services; consequently it has become a focal point of human development. People are attracted to the coast because of access to resources, favourable climate, aesthetic appeal and potential for recreational activities. As pressure for utilisation and development increases, so does the need to manage the coastal system more effectively. This research focuses on the coastal...

Stock, William David

The Cape Floral Kingdom, known locally as "fynbos", is of great scientific and aesthetic interest as well as being economically important as a water source zone, as a source of flowers for the cut flower industry and as a recreation area. Sound ecological knowledge is required in order to manage and conserve fynbos because the extent of this unique, species-rich, endemic flora has been drastically reduced. Nutrients, in particular nitrogen and phosphorus, have been identified as being of crucial...

Sha, Xiaoyu

Many research efforts have been made to the Mississippi coastal restoration, but long-term rheological and sedimentological experiments for sediment erosion, deposition and consolidation in diversion receiving basins are still lacking. Push cores and sediment samples were collected from West Bay, a semi-enclosed bay located on the Mississippi River Delta, and Big Mar pond, a receiving basin of the Caernarvon freshwater diversion from the Mississippi River, Louisiana. A dual-core Gust Erosion Mic...

Penner, Johan

Commercial fishing in the Baltic Sea has led to decrease in abundance of large predatory fish and as a result the predation pressure on smaller fish species has been reduced. Three-spined stickleback (Gasterosteus aculeatus) is among the species that have benefited from reduced predation pressure. Sticklebacks are a small fish species that spends its juvenile stage in coastal habitat and its adult stage in the open sea with a yearly migration from the sea to coastal habitat and lakes for spawnin...

Benito Granell, Xavier

Amb cinc capítols, la tesi doctoral combina l’estudi dels hàbitats presents, passats i futurs del Delta de l’Ebre, un dels ecosistemes d’aiguamolls més gran del Mediterrani occidental. S’han aplicat diferents aproximacions per cadascuna de les tres escales temporals: i) en el present, la utilitat de diatomees i foraminífers bentònics com a indicadors ecològics dels hàbitats del Delta de l’Ebre, ii) en el passat, l’ús de les comunitats de foraminífers preservades en el sediment per reconstruir el...

Joher Sais, Sergi

En aquesta tesi es van descriure els principals fons algals del detrític costaner de la plataforma continental de Mallorca i Menorca (illes Balears, Espanya), i es van proposar mètodes efectius per al seu mostreig tant a nivell de paisatge com de comunitat. Així, en primer lloc, es van identificar i caracteritzar sis paisatges algals principals a partir de les mostres recol·lectades mitjançant l’arrossegament de fons, que permet mostrejos en àrees extenses. Seguidament, es van descriure algunes ...

Al-Amoudi, Soha

Since the soils nutrient composition along with the associated biotic and abiotic factors direct the diversity of the contained microbiome and its potential to produce bioactive compounds, many studies have been focused on sediment types with unique features characteristic of extreme environments. Red Sea lagoon ecosystems are environments with such unique features as they are highly saline. However, not much is known about the potential of their microbiomes to produce bioactive compounds. Here,...

Barton, Regina A.

Master of Science / Department of Biology / Brett K. Sandercock / The migratory period is a critical time for birds. Population declines in long-distance migratory birds have been associated with trophic mismatches among climate change, timing of food availability, and timing of migratory movements. Studies on migratory songbirds have been limited to eastern North America and Europe, and migration strategies of birds may differ along the Pacific flyway. We evaluated the stopover ecology of five ...

McCormick, William Conner

No description available.

Jayamangal, Raghavendra

Coastal erosion has become an important phenomenon for all the beaches in theworld. There are many physical changes involved in the Coastal erosion. This paperis more concentrated towards the quantification of the coastal erosion andmovements of sediments along the beach. It tries to understand the volumetricchanges and Sediment movement along the Spey Mouth and River Spey. The thesisincludes the study of the changes along the beach and river over a long period oftime. The study area is located ...

Smith, Marié

Ocean colour remote sensing is a valuable tool for deriving information about key biogeochemical variables over inland, coastal and ocean waters at scales unachievable via in situ techniques. However, broader use of ocean colour data is still limited by the need for users to choose among a seemingly complicated range of available satellite products and to understand the limitations and constraints of these products across a wide range of water types. This issue could benefit from the capability ...

Murphy, Catherine Elizabeth

Weak biotic responses to habitat gradients within Northern Gulf of Mexico streams have been attributed to spatial and temporal variability. Landscape and in-stream habitat descriptions are presented for watersheds within Pleistocene terraces of the Coastal Plains geomorphic province of Louisiana, USA. Geologic influences on stream habitat were inferred by comparing multivariate ordinations on physicochemical measurements between terraces. Seasonal variability was assessed during a drought year (...

Chu, Jackson Wing Four

Natural cycles of environmental variability and long-term deoxygenation in the ocean impose oxygen deficiency (hypoxia) on marine communities. My research exploits a naturally occurring hypoxia cycle in Saanich Inlet, British Columbia, Canada where I combined spatial surveys with remotely operated vehicles, ecological time-series from the subsea cabled observatory VENUS, and lab-based respirometry experiments to examine the influence of seasonally variable oxygen conditions on epibenthic communi...

Denlinger, Emily E.

Coastal marshes and wetlands are vital natural resources that offer habitats for plants and animals, serve as ecological filtration for soil and water pollutants, and act as protection for coastlines. Fishing, both commercial and sport, has a large economic impact in the study area – the Gulf Coast between Galveston Bay, TX and Oak Grove, LA. The objective of this research was to determine the contribution of Hurricane Ike storm surge sedimentation to long-term marsh aggradation in Texas and L...

Enwright, Nicholas

The objective of this study was to deploy a conceptual framework developed by M. Forbes using a geographic information system (GIS) approach to assess the functionality of wetlands in the Galveston Bay Area of Texas. This study utilized geospatial datasets which included National Wetland Inventory maps (NWI), LiDAR data, National Agriculture Imagery Program (NAIP) imagery and USGS National Land Cover data to assess the capacity of wetlands to store surface water and remove pollutants, including ...

DeJong, Benjamin D.

Rising sea levels present an ongoing threat to communities and resources around the Chesapeake Bay, east coast, USA, where tide gauges indicate that the relative rise of sea level is approximately twice the rate of average, eustatic sea-level rise. This has significantly compromised the health and viability of salt marsh habitat on the Eastern Shore during the 20th century, and the biologists who are charged with managing coastal resources in the coming decades need to understand the nature and ...

Hodge, Joshua Brian

This study uses the storm surge sediment beds deposited by Hurricanes Audrey (1957), Carla (1961), Rita (2005) and Ike (2008) to investigate spatial and temporal changes in sedimentation rates on the McFaddin National Wildlife Refuge in Southeast Texas. Fourteen sediment cores were collected along a transect extending from 90 to 1230 meters inland from the Gulf Coast. Storm-surge-deposited sediment beds were identified by texture, organic content, carbonate content, the presence of marine microf...

Makriyannis, Christos

<p> This dissertation comprises of three papers that address the use of stated preference (SP) choice experiment techniques to better understand how people value the methods and consequences of alternative climate change adaptation strategies. Specifically, it addresses two fundamental issues coastal communities face when making adaptation decisions: 1) tradeoffs between natural systems and built assets and 2) uncertainty regarding future climatic conditions. These issues pose methodological cha...

Lynöe, Kaj

In this study we determined the magnitude of plant mediated CH4 emission (flux) in two vegetation types of Carex ramenskii. The objectives of this paper were to quantify the proportion of CH4 emissions from plant mediated flux and the total flux (plant and soil). This information is needed in order to understand how grazing affects plant mediated CH4 flux. In addition, we differentiated between two vegetation morphs, grazed and ungrazed, and determined the plant mediated CH4 flux for vegetation ...

Fitch, LeeAnn Renee

Six years following the Deepwater Horizon oil spill, buried MC252 oil persists on a beach segment in Fourchon, LA due to the natural anaerobic conditions of tidal groundwater. A field trial of in situ aerobic bioremediation of buried oil began on July 2015. Oxygen was added to the subsurface using Waterloo emitters which deliver O2 through diffusion via pressurized tubing in fixed groundwater wells. The multi-well injection system provided sufficient oxygen concentration in the groundwater in th...

Holden, Clive John

Bibliography: pages 96-103. / This thesis presents the results of a current meter experiment performed in the St Helena Bay - Cape Columbine region during winter 1982. The work, which forms part of the shelf dynamics programme undertaken by the Sea Fisheries Research Institute, attempts to identify the important time and spatial scales within the coastal currents and to investigate the relationship between the sub-inertial flow and low frequency variations in the coastal winds.

Wang, Hua

The coastal zone of Louisiana contains more than three million wetland acres, or about 40 percent of the nations total. Since 1930, Louisiana has experienced a net loss of over 1,900 square miles of coastal wetlands. Currently at risk are the remaining coastal wetlands, 80 percent of which are under private ownership. The acceptance of private wetland owners to restoration programs and their participation in these programs are critical if future coastal restoration efforts are to be successful. ...

Pether, John

Bibliography: pages 295-307. / The exposures in diamond mines on the Namaqualand west coast of South Africa provide a rare opportunity to examine a record that is normally inaccessible beneath a thick cover of aeolian sands. This study presents the main results of fieldwork in mine excavations on the farms Hondeklip and Avontuur-A, near Hondeklip Bay. Sections in the deposits were described in detail and the vertebrate and invertebrate faunas were sampled. The buried topography of the gneiss bed...

Juneviciute, Ausra

This Master Thesis “Evaluation of Environmental Impact Assessment procedure for thecoastal zone development in Lithuania and Sweden” was done in the Master’s Programme inSustainable Technology at the Royal Institute of Technology (KTH). The process of Environmental Impact Assessment (EIA) is one of the most important steps inthe coastal planning process. It is a procedure designed to identify the potential consequencesfor nature and the environment arising from development. This information is t...

Dames, Michael Henri

Expected release date-April 2019

Elliott, Patrick

This study uses the predictive modeling program Sea-Levels Affecting Marshes Model (SLAMM) to evaluate sea-level rise hazards, such as erosion and inundation, on coastal archaeological sites with a vertical rise of sea level of .98 meters from 2006 to 2100. In total 177 archaeological site locations were collected and georeferenced over GIS outputs maps of wetlands, erosion presence, surface elevation, and accretion. Wetlands data can provide useful information about characteristics of the wetla...

Kavagutti, Vinicius Silva

Submitted by Aelson Maciera (aelsoncm@terra.com.br) on 2017-04-25T19:44:33Z No. of bitstreams: 1 DissVSK.pdf: 2947181 bytes, checksum: 3c3bd8a24247cda4927887b3e6e3218b (MD5) / Approved for entry into archive by Ronildo Prado (ronisp@ufscar.br) on 2017-05-02T13:09:55Z (GMT) No. of bitstreams: 1 DissVSK.pdf: 2947181 bytes, checksum: 3c3bd8a24247cda4927887b3e6e3218b (MD5) / Approved for entry into archive by Ronildo Prado (ronisp@ufscar.br) on 2017-05-02T13:10:02Z (GMT) No. of bitstreams: 1 Dis...

Kulunk, Hasan Salih

<p> This thesis provides a review of the development of hydrographic survey equipment and supporting geospatial equipment and technology such as GPS. Using SonarWiz, a sonar image processing software package, lakebed classification methodologies were evaluated for mapping Buffalo Reef in Lake Superior located near Gay, Michigan. The goal was to develop an approach to mapping the reef bed and delineating various components of the lake bottom, including stamp sands, which are migrating from the ab...

De Cuevas, Beverly Ann

No description available.

MacAdams, Jeffrey

Conventional fish monitoring requires considerable investments of equipment and labour, and often harmful and potentially fatal techniques. Emerging methods allow detection of aquatic animals by collecting water and extracting DNA that has been shed to the environment (eDNA). Present knowledge gaps in the field include minimum densities necessary for consistent detection, and persistence of eDNA after a target species has left a site. I conducted three experiments at a salmon hatchery in Briti...

Pingree-Shippee, Katherine

Extratropical cyclones (ETCs) are major features of the weather in the mid- and high-latitudes and are often associated with hazardous conditions such as heavy precipitation, high winds, blizzard conditions, and flooding. Additionally, severe coastal damage and major local impacts, including inundation and erosion, can result from high waves and storm surge due to cyclone interaction with the ocean. Consequently, ETCs can have serious detrimental socio-economic impacts. The west and east coasts ...

Peter, Craig Ingram

Phenomenological models are presented which predicts transpiration rates (E) of individual leaves of Scaevola plumieri, an indigenous dune pioneer, and Ammophila arenaria, an exotic grass species introduced to stabilise mobile sand. In both cases E is predictably related to atmospheric vapour pressure deficit (VPD). VPD is calculated from measurements of ambient temperature and humidity, hence, where these two environmental variables are known, E can be calculated. Possible physiological reasons...

O'Brien, Patrick S.

<p> The assumption of hydrologic stationarity has formed the basis of coastal design to date. At the beginning of the 21^st century, the impact of climate variability and future climate change on coastal water levels has become apparent through long term tide gauge records, and anecdotal evidence of increased nuisance tidal flooding in coastal areas. Recorded impacts of global sea rise on coastal water levels have been documented over the past 100 to 150 years, and future water levels ...

Nicastro, Katy R

Organisms inhabit environments that have many dimensions, each of which can vary temporally and spatially. The spatial-temporal variations of environmental stressors and disturbances may have major but different effects on indigenous and invasive species, favouring either of them at different times and places. The invasive mussel Mytilus galloprovincialis invaded the South African coast 30 years ago and, on the south coast of South Africa, it now competes and co-exists with the indigenous Perna ...

West, David

The objective of this study was to (1) identify the dominant processes affecting stream temperature and (2) develop and apply a process-based stream temperature model to assess the potential for managing the thermal regime of a regulated river in coastal BC through bank re-forestation and changes to release regime. The study spanned June to September 2013, when temperatures are highest and multiple salmonid species begin their spawning runs. Following June 14, a steady discharge of approximately...

Weatherdon, Lauren Vanessa

Recent studies have demonstrated ways in which climate-related shifts in the distribution and relative abundance of marine species are expected to alter the dynamics and catch potential of global fisheries. While these studies focus on assessing impacts to commercial fisheries, few efforts have been made to quantitatively project impacts to small-scale fisheries that are economically, socially and culturally important to many coastal communities. This study uses a dynamic bioclimate envelope mod...

Maggs, Jade Quinton

Movement of fishes is an integral part of their daily life, but has significant implications for fishery management. As with nearly all coastal countries, South Africa relies on coastal fisheries as a renewable resource, but many stocks have been overexploited for decades. Although it has long been recognised that an understanding of fish movement is necessary for effective management, it is with some difficulty that the subject has been studied in the past. In recent years, however, improvement...

Regan, Matthew

<p> Stabilized water levels of the upper St. Lawrence River have reduced plant diversity and allowed competitively dominant taxa such as <i>Typha </i> x <i>glauca</i> and <i>Typha angustifolia </i> to displace productive sedge meadow habitat. This research studied the effects of two wetland enhancement techniques using habitat heterogeneity and manipulating hydrology. Dredge spoils from pothole excavations in <i> Typha</i> marshes were reconfigured to create habitat mounds. These habitat mounds ...

Newell, Robert

Effective coastal planning is inclusive and incorporates the variety of user needs, values, and interests associated with coastal environments. This requires understanding how people relate to coastal environments as ‘places’, imbued with values and meanings, and accordingly, tools that can capture place and connect with people’s ‘sense of place’ have the potential for supporting effective coastal management strategies. Realistic, immersive geographical visualizations, i.e., geovisualizations, t...

Cown, David John

X-ray densitometry was used to investigate some environmental and genetic influences on wood formation in young Douglas-fir trees growing in the Pacific Northwest. Sampling methods were determined from sectional analyses of even-aged stems and eleven growth-ring width and density variables were measured in several trials to elucidate' some of the causes of variation. Breast height increment core samples were shown to giveve a good representation of stand properties and juvenile-mature correlati...

Houseknecht, Stephan J.

The study was initiated to determine the composition and structure of vegetation and natural tree regeneration invading logged areas within three major forest associations that were subjected to different site treatments in coastal British Columbia. To accomplish the above objectives, 50 one-fortieth acre plots were established in logged areas ranging in age from 2 to 14 years following logging and the accompanying site treatment. The number of trees per acre by height class, rooting substr...

Wiegand, Ronald Clive

In the spring of 1973 continuous horizontal measurements were made of temperature, salinity, oxygen and chlorophyll a. in British Columbia coastal waters. The sampling procedure involved a towed pumping system and on-board instrumentation. An effort is made to describe the distributions of the measured parameters with particular emphasis on the smaller scales, less than 250 m. To this end, techniques of power spectral analysis were utilized to examine the data. Results show that there is varia...

Krumlik, Jiri George

The distribution of the above-ground biomass and macronutrient content of the trees were studied on two sample plots in south coastal British Columbia, near Vancouver. The plots differed in elevation (4,600 and 2,200 feet; 1,500 and 700 m), in soil type and depth. Tree age was similar in both plots, ranging from 150 to 530 years. The tree cover on the high elevation plot consisted of Tsuga mertensiana (Bong.) Carr. (mountain hemlock) and Abies amabilis (Dougl.) Forbes (Pacific silver fir) while...

Abbey, Tyler

The temperature response of Coastal Douglas-fir fine root respiration (RFR) was investigated with a laboratory based experiment and during field studies. In the laboratory, a reciprocal transplant experiment was carried out to assess the temperature response of biomass-specific RFR. Seedlings were moved from either 16 to 24°C or 24 to 16°C, to test for warm and cold acclimation, respectively. Following transfer, there was an elevation in RFR of all treatments. Neither this ’transfer effect’, nor...

Ukrainetz, Nicholas K.

Coastal Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco var menziesii) is one of the most commercially important tree species on the west coast of British Columbia and the United States due largely to its superior wood quality. Several growth and wood quality traits, including height, diameter, volume, earlywood, latewood and average density, latewood proportion, fibre length and coarseness, and complete cell wall chemistry, were measured for 600, 26 year old Douglas-fir trees from 15 full-sib...

Wilson, Sandra Joan

A study conducted in Stave Reservoir, near Mission British Columbia, examined the linkages between flooded shoreline vegetation and associated periphyton and benthic communities in a coastal reservoir drawdown zone. Two native perennial species, woolgrass (Scirpus cyperinus) and lenticulate sedge (Carex lenticularis), and an annual agronomic species, fall rye (Secale cereale L.) were used in the study. A total of 108 pots containing either one of the plant species or barren substrate (i.e. ...

Marchetti, Adrian

In vast regions of the world's oceans, phytoplankton, in particular diatoms, are growth-limited by low concentrations of the micronutrient, iron. SERIES (Subarctic Ecosystem Response to Iron Enrichment Study) was performed near Ocean Station Papa (144.45°W, 50.20°N) to determine the phytoplankton response to iron enrichment in high nutrient, low chlorophyll (HNLC) waters of the NE subarctic Pacific. Chlorophyll a (chl a) increased 21 times from 0.3 mg m⁻³ to a peak of 6.3 mg m⁻³18 days afte...