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.
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Showing 1 to 20 of 101 for “"ecosystem functions"”.
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Plant Functional Traits and Ecosystem Functions in Experimental Grassland Stands
… on implications of functional groups on ecosystem functions related to water- nutrient- and carbon cycle were carried out. Three experiments were conceived to test for implications of dominant species traits and phytodiversity on ecosystem functions. I Water, nutrient and DOC fluxes and …
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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 …
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The impact of silvicultural strategies and climate change on carbon sequestration and other forest ecosystem functions
Forests are a key resource serving a multitude of functions such as providing income to forest owners, supplying industries with timber, protecting water resources, and maintaining biodiversity. Recently much attention has been given to the role of forests in the global carbon cycle and their …
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The effect of habitat management on biodiversity and ecosystem functions in oil palm plantations in Sumatra, Indonesia
… a negative impact on biodiversity and associated ecosystem services, as it reduces habitat complexity and the capacity of plantations to buffer microclimate. This study is based at the Biodiversity and Ecosystem Function in Tropical Agriculture (BEFTA) Programme in Sumatra, Indonesia. Study sites …
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The Past, Present, and Future of Large Reptiles: Rewilding, Climate Change, and Conservation Palaeobiology
Species extinctions reduce the diversity of functions that an ecosystem can provide, with negative effects for both natural habitats and society. Rewilding is the restoration of these ecosystem functions by returning locally extinct species or their ecological analogues to an environment. Rewilding …
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Development of Ecosystem Structure and Function on Reforested Surface-Mined Lands
… efforts also restore the native forest ecosystem functions. We quantified rates of return of key ecosystem functions and structural attributes of the post-mining forested ecosystem. A chronosequence of four reforested mine sites and an unmined reference stand were studied in southwestern …
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Modelling techniques for biodiversity and ecosystem multifunctionality - theoretical development and application.
… methods for analysing the biodiversity and ecosystem function relationship, focusing on complexities arising from examining species rich ecosystems and examining multiple ecosystem functions. I developed a parsimonious model for assessing diversity effects on ecosystem function in species …
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The role of red-backed salamanders in ecosystems
<p>Ecosystems provide a vast array of services that benefit human societies, which can be divided into provisioning, regulating, cultural, and supporting services. Amphibians provide provisioning services in the form of food and use in medical advances. As one of the major vertebrate groups, …
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The impact of macrophyte mats on biodiversity and ecosystem functioning of benthic communities
… Ulva on the benthic macrofaunal communities and ecosystem functions, at different phases of decomposition; firstly, as large sheets (Chapter 2), then as detritus (Chapter 3), and finally as the Ulva detritus is incorporated and reworked into the sediment and foodweb (Chapters 4 and 5). The …
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The effects of dung beetles on ecosystem functioning: From global trends to New Zealand pastures
… affect a suite of important biotic and abiotic ecosystem processes, or functions. However, the dynamics of these functions across different ecosystems and over time remain largely unknown. This PhD thesis investigates the relationships between dung beetles and ecosystem functions, from …
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Exploring the relationship between restored ecosystem function and species composition: a meta-analysis
… idea that biodiversity confers higher levels of ecosystem functioning has been used as an argument for the conservation of biodiversity, and the relationship between these variables has been well researched. Ecosystem restoration often aims to restore former ecosystem functioning as well as …
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Directions for best management of Kangaroo grass (Themeda triandra Forssk.) re-establishment in southeastern Australian native grassland remnants
… are recognised as one of the most threatened ecosystems in Victoria (DC&E 1992). Ecosystem functions and their ability to support life are disappearing along with the remnant grasslands. The research project reported in this thesis aimed to develop methods to re-establish the dominant native …
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Effects of land management and climate change on soil microbial communities in Appalachian forest ecosystems
In terrestrial ecosystems, microorganisms are the dominant drivers of virtually all ecosystem processes, particularly cycling of carbon (C), nitrogen (N), and phosphorus (P). These microbial functions are critical for promoting ecosystem services that support human well-being, such as provisioning …
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Riparian resilience in the face of interacting disturbances: understanding complex interactions between wildfire, erosion, and beaver (Castor canadensis) in grazed dryland riparian systems of low order streams in North Central Washington State, USA
… the western United States (US) provide critical ecosystem functions and services such as diverse habitat for numerous species, flood attenuation and essential water storage in water limited environments. These systems have experienced long term disturbance from anthropogenic activities including …
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Investigating the efficiency of reforestation approaches in restoring rainforest biodiversity and function
… biodiversity losses, re-instate ecological functions and increase the provision of ecosystem services in tropical forests. Effective assessment of the success of ecological restoration projects is critical in justifying the use of restoration, as well as improving best practice. However, …
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Multi-faceted analyses of plant-pollinator interactions: From ecological communities to individual foraging decisions
Ecosystems are complex communities of interacting species and abiotic factors. A single species cannot be fully understood without the direct and indirect interactions it has with the rest of its community and environment. Therefore, it is crucial to understand how behavior and species interactions …
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Pollination in a changing world: function and resilience
Human activities have far-reaching impacts on ecosystems worldwide. Agricultural expansion and intensification is a primary driver of terrestrial biodiversity loss, disrupting important ecosystem functions. Paradoxically, agriculture relies strongly on these same ecosystem functions. …
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Soil Genesis and Vegetation Response to Amendments and Microtopography in Two Virginia Coastal Plain Created Wetlands
Wetlands serve important ecosystem functions such as carbon sequestration but are often affected by disturbances like urban development, agriculture, and road building. For wetlands created to mitigate losses, it is important that the ecosystem functions successfully replicate those of natural …
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Design investigation of the Lake Calumet Complex: improving water quality to regenerate local industrial, community, and ecosystem resources
… these complex systems in order to rehabilitate ecosystem functions and improve water quality. Additionally the park hybridizes many social and ecological functions to improve community recreational opportunities and gain public acceptance and appeal.
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Dynamics of forest ecosystem properties and resilience in a temperate woodland undergoing dieback.
… crucial to understand how fundamental underlying ecosystem properties (EPs) including biodiversity, ecosystem functions and ecosystem services will be impacted. Currently, this knowledge is severely limited, but is essential for future management of forests at both stand and landscape scales. The …
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