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 28 for “"ecological indicators"”.
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Fish scales as ecological indicators: empirical approaches to improve their practical application to fish ecology
… of their potential for application to other ecological methods, yet there is also considerable uncertainty in how this can be achieved. Thus, the purpose of this research was to examine how the use of scales within age and growth studies can be enhanced and investigate their application to …
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GROUND BEETLES (COLEOPTERA: CARABIDAE) AS BIODIVERSITY INDICATORS FOR AGE STRUCTURE IN PIEDMONT FORESTS?
… age and identified eighteen species as potential ecological indicators for forest age. Ground beetles (Coleoptera: Carabidae) are typically ground-dwelling, generalist predators. Carabids were collected monthly through pitfall traps from March 2009 through February 2010 from 33 sites representing …
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Modelling British Columbia’s ecosystems and avian richness using landscape-scale indirect indicators of biodiversity
… of biodiversity monitoring have identified ecological indicators for the indirect mapping of species richness and ecosystem components modelling the processes controlling species distribution gradients. The goal of our research is to advance broad-scale biomonitoring by demonstrating how …
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Foraminiferal species distributions and sedimentological dynamics of the Knysna Estuary, South Africa
… since foraminifera serve as essential ecological indicators, and can be used to monitor the health of the ecosystem during development, as they are extremely sensitive to any environmental changes. The Knysna Estuary is well suited for investigating microfossil assemblages, since it has …
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A decision tree framework for assessing status of exploited marine ecosystems under changing environmental conditions
… that of the IndiSeas project, which makes use of indicators designed to detect the impacts of fishing on marine ecosystem around the world. A suite of indicators, selected from those utilised in the IndiSeas project, was divided into ecological and fishing pressure indicators. Ecosystem specific …
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Protection and management of marine areas in the Mediterranean Sea: applications of satellite remote sensing
… conditions. The seasonal variations of the ecological indicators (i.e. phytoplankton blooms and thermal trends) were analysed over various MPAs located in different regions of the Mediterranean basin, and different biooptical algorithms were tested in a coastal MPA. The short-term and …
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The Effects of Diet and Predation on Nesting Herring Gulls (Larus argentatus) in Pukaskwa National Park
Herring gulls (Larus argentatus) are used as ecological indicators of the coastal Lake Superior ecosystem in Pukaskwa National Park. Their populations have declined by 70% over the last 40 years, suggesting changes in the park ecosystem. I assessed herring gull diets and investigated how diet may …
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GENOMIC AND PHYSIOLOGICAL INSIGHTS INTO BACTERIAL HEAVY METAL RESISTANCE MECHANISMS FOR ENVIRONMENTAL DECONTAMINATION
… hydrocarbon contaminated area demonstrates how ecological indicators can support rhizoremediation assessment. Collectively, these findings contribute to a deeper understanding of microbial and plant-microbe interactions in metal-contaminated environments, and support the development of …
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An economic analysis of dietary diversification in the developing world
… investigates the economic, social and agro-ecological indicators that drive dietary diversification of national food supplies (DFS) over time across countries and regions. The traditional economic view, stemming from Bennett (1944), is that economic growth is the major driver of the …
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Blattodea as potential indicators of Peninsula Granite Fynbos restoration following the clear-felling of pine plantations
… potential of Blattodea species to be employed as ecological indicators of Peninsula Granite Fynbos restoration, along a chronosequence of recently-felled pine stands. Within 10 years of clear-felling, Blattodea communities inhabiting recovering fynbos do not appear to be very distinct in terms of …
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Identification of social indicators and standards for acceptable conditions in the Cohutta Wilderness using a normative social judgment approach
… Cohutta Wilderness users place upon potential indicators of preferred wilderness experiences, 2) identify the extent to which norm, or standards, exist among these users for a variety of social indicators of the wilderness experience, and 3) to compare these characteristics among a number of …
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Monitoring and assessment of macroinvertebrate communities in support of river management in northern Vietnam
… into classes ranging from very good to very poor ecological conditions. The current BMWP-Viet approach can be useful at an early stage of bio-assessment application in Vietnam. However, this method should be improved by optimising the scoring system for common taxa and development of more robust …
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Beyond pastoralism : through community gardens to a model of sustainable design and a metaphor of integration
… 3) Create environments which sustain people. Indicators give us a good measure of the extent to which a particular environment is sustainable. Ecological indicators reflect the regenerative processes of ecosystems. Community indicators measure the capability of environments and the processes …
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Dynamique des populations de caribous migrateurs (Rangifer tarandus) basée sur des indices de condition corporelle
… an alternative to population estimates, indirect ecological indicators, which are density-dependent indices based on individual physical characteristics or performance, have been proposed to monitor ungulate populations. I amalgamated morphological data measured on newborns, yearlings and adult …
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Coyote (Canis latrans) Behavioural Adaptations Amid Seasonal Weather Changes
… known for their resilience, may serve as ecological indicators of broader impacts on less adaptable species. In particular, pup play – an ‘energetically costly’ behaviour tied to development and survival – may be sensitive to rising temperatures. I hypothesized that UHI-related temperature …
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Assessing the implementation efficacy of an ecosystem approach to Fisheries management in the South African sardine fishery
… management (TROM) to include wider social-ecological dimensions of fisheries. An EAF requires balancing of multiple, often conflicting objectives, effectively dealing with complexity and uncertainty, and engaging with diverse groups of stakeholders. Various tools within the field of …
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The impact of pine plantations and alien invertebrates on native forest and fynbos invertebrate communities in Table Mountain National Park
… and Camponotus bertolinii) were selected as ecological indicators of restoration progress in fynbos following clear-felling of pine. Ants similarly have application for monitoring in other Mediterranean-type ecosystems impacted by invasive pines.
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Sustainable Beach Resort Development: A Decision Framework for Coastal Resort Development in Egypt and the United States
… a comprehensive approach linking sustainability indicators and carrying capacities. This approach includes an array of acceptable capacities based on the ecological, social, psychological, physical, economic, and managerial capacity thresholds of a site. This framework assists stakeholders in …
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The effects of coal mining on sedimentation and fish assemblages in the Powell River, Virginia
An ecological study was undertaken on the Powell River system in Virginia from 1988 - 1990 to evaluate the effects of land uses on hydrology, water quality, sedimentation (particle size < 2 mm), and fish assemblages and to derive ecological indicators for monitoring. The hydrologic (disturbance) …
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Multi-locus phylogenetic inference of the howler monkey (Alouatta) radiation in South America.
… dispersers, howlers have also been known to be ecological indicators. Available phylogenetic hypotheses for this genus have used chromosomal characters, morphological characteristics, and a limited number of molecular markers and specimens. In spite of these analyses, branching patterns among …
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