Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 29 for “"seagrass meadows"”.
-
Carbon storage and preservation in seagrass meadows
Seagrass meadows are important ‘Blue Carbon’ sinks but many questions remain unaddressed in regards to the organic carbon (OC) sequestration capacity and processes leading to retention and persistence of OC in seagrass sediments. The research summarised in this dissertation examined 37 sediment …
-
Tropicalisation of temperate seagrass meadows in Western Australia: Predicting the impact of tropical herbivorous fishes on temperate seagrass meadows
… expansion of tropical herbivores into temperate seagrass meadows is predicted to increase grazing pressure and alter ecosystem services and processes in these seagrass systems. This study attempted to examine the effects of tropicalisation on temperate seagrass meadows along the western coast of …
-
Intertidal Seagrass Meadows in South West England: The Ecology of Expansion
… from unvegetated mudflats to dense perennial seagrass habitat. Yet despite the increasing prevalence of intertidal seagrass meadows in the South West, there are large knowledge gaps relating to intertidal meadow biodiversity, function and ecosystem service provision, particularly within the …
-
Impact of black swan grazing and anthropogenic contaminants on New Zealand seagrass meadows
Seagrass is the only marine angiosperm (flowering plant) and decline of seagrass meadows has been reported worldwide. The important ecological and economic values of this marine habitat make it essential to preserve. Seagrass meadows of New Zealand are composed of only one species, Zostera …
-
The effects of terrestrial sediment inputs on ecosystem functions in seagrass meadows and unvegetated sediments
Ecological functions in estuarine seagrass and unvegetated soft sediment habitats underpin many valuable ecosystem services. However, changing land-use and climate are accelerating inputs of fine terrestrial sediments, threatening these habitats. The prolonged suspension of fine sediments can …
-
Changes to the distribution of Posidonia seagrass communities of James Point, in response to the development of Cockburn Sound, Western Australia
… it supports one of the most extensive Posidoni seagrass communities in Western Australia. The protected coastal waters off the southern metropolitan coastline of Perth arc utilised intensively for industrial, commercial and recreational purposes. Over the past 50 years, wastes have been …
-
Carbon and nitrogen cycling in vegetated coastal ecosystems
… ecosystems (e.g., mangroves, salt marshes, and seagrasses) are key drivers of coastal greenhouse gas and nutrient cycling because of their environmental characteristics (e.g., shallow depths, organic matter rich sediments, etc.). My dissertation addresses the role of vegetated coastal ecosystems …
-
Diet of the Tropicalised Herbivore Siganus fuscescens Across a Broad Latitudinal Gradient and Comparisons With Temperate Seagrass-associated Omnivorous Fishes
… distribution has extended into rocky reefs and seagrass meadows of temperate southwestern Australia. The aim of this study is to determine if the poleward range shift of S. fuscescens could result in competition for food sources with temperate seagrass-associated omnivorous fish and/or increase …
-
Assessing biofilm and epiphytes on seagrass leaves as bioindicators of environmental change
Seagrasses are highly valued for their productivity and ecosystem services. Despite their importance, seagrasses are declining globally, with losses comparable to tropical rainforests and coral reef ecosystems. Eutrophication and light reduction are two major environmental pressures contributing to …
-
Seagrass Carbon Standing Stock in the Northern Gulf of Mexico: The Role of Seagrass Beds in Mississippi as Potential Blue Carbon Sinks
… in marine ecosystems is known as blue carbon. Seagrass beds have the ability to contribute to global blue carbon standing stocks through the uptake and sequestration of carbon from the water column. Through coastal management and conservation best practices, blue carbon habitats have the …
-
Productivity and carbon sequestration potential of seagrass ecosystems in the eastern Aegean Sea
… typically form net autotrophic habitats such as seagrass meadows, could be crucial to counteracting CO₂ emissions. Increased fragmentation of Posidonia oceanica seagrass meadows within the eastern Mediterranean basin, linked to increased sea surface temperature, places these meadows at high risk …
-
Remote sensing of dynamics and aboveground biomass of seagrass in Tauranga Harbor (Bay of Plenty), New Zealand
Seagrasses are angiosperm plants that are completely adapted to life in seawater. They are distributed widely across the climatic regions, ranging from the tropics to temperate regions, in both inter-tidal and sub-tidal zones. Multiple ecosystem services are recognized as being supported by …
-
Establishment of ecological functions in transplanted meadows of the seagrass Posidonia australis
Seagrass restoration programmes are becoming increasingly important in helping to maintain the biodiversity of coastal systems in many parts of the world, due to large areas of seagrass being lost over the last 50 years. The success of any restoration programme should ultimately be based on …
-
The effect of ocean acidification on plant-animal interactions in a <i>Posidonia oceanica</i> meadow
… next SO- 100 years. In the Mediterranean Sea, meadows of the seagrass <i>Posidonia oceanica</i> play a pivotal role in coastal systems, providing shelter and food for a highly diversified plant and animal community, and nursery for several commercial species of fish and bivalves. This thesis …
-
Assessing Feeding Preferences and Spatial Patterns of Lagodon rhomboides Linnaeus
… mitigate the effects of eutrophication in seagrass systems. In this study we look at pinfish (<em>Lagodon rhomboides </em>Linnaeus)<em> </em>as a potential epiphytic grazer and assess feeding preferences during a transitional stage in the ontogenetic diet shift exhibited by these fish. …
-
An assessment of Eddy Correlation technique in marine habitats
… Optode system (ECO) for O₂ flux measurement in seagrass meadows and benthic organisms in the laboratory and field. Although EC has been used in aquatic system for over a decade, this system is still under development to gain robust results. According to its complexity, the EC and software used …
-
Evaluating the Role of Habitat Complexity in Structuring Seagrass Communities
Biogenic coastal habitats such as salt marshes, seagrasses, and oyster reefs, support diverse faunal communities and can serve as nursery areas by enhancing the abundance, growth, and survival of juvenile fish and crustaceans. The structure and complexity of these biogenic habitats can strongly …
-
Unraveling the mystery of leaf reddening in seagrasses
<p>Seagrass meadows around the world are declining due to natural and anthropogenic stressors, including global climate change. Recently, more attention has been given to identifying responses that offer resistance to stressors so that researchers can better manage seagrasses for resilience to …
-
New Zealand seagrass (Zostera muelleri) response to acute sedimentation: Linking non-structural carbohydrate reserves to resilience
Seagrass meadows form healthy near-coastal marine environments that provide a wide range of ecosystem services in New Zealand and Australia. However, seagrass habitats are declining regionally and globally. It is therefore essential that research fills the current knowledge gaps associated with …
-
Interactions between currents and the spatial structure of aquatic vegetation
… tidal currents and the spatial distribution of seagrass meadows is examined. Seagrass beds range in their coverage from continuous meadows, to spotty swaths dominated by discrete patches. The relationship between this area coverage and tidal currents, explained by the principles of percolation …
Page 1 of 2