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 20 for “"ecologically-meaningful"”.
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Distribution, patchiness, and behavior of Antarctic zooplankton, assessed using multi-frequency acoustic techniques
… of methods for extracting estimates of ecologically-meaningful quantities from measurements of scattered sound. The distribution of acoustic volume backscattering at the single frequency of 120 kHz was first examined as an index of the overall biomass of zooplankton. Distinct spatial and …
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Vegetative communities as indicators of ground beetle (Coleoptera: Carabidae) diversity
… units by their carabid assemblages into five ecologically meaningful clusters: disturbed, marsh, prairie, restoration, and savanna. The subset of land unit characteristics with the highest rank correlation with the NMDS ordination included soil moisture, leaf litter depth, percentage of canopy …
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The organisation of a third-order olfactory brain region in the vinegar fly
… behavioural response after associative learning, ecologically meaningful and evolutionarily significant odour channels trigger innate behavioural responses, likely through hard-wired, genetically and developmentally pre-programmed circuits. The identity and function of third-order neurons, …
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Species richness and metacommunity dynamics in bryophytes
… remarks about aspect and slope being the most ecologically meaningful predictors of bryophyte species composition on boulders (Vitt, Li & Belland 1995; Spitale & Nascimbene, 2012). Such parameters were more important than general environmental conditions within a site, because they control …
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Patterns and causes of population subdivision in the marine environment
… features and life history traits in establishing ecologically meaningful connections among marine fish species. Furthermore, this study provides evidence of the usefulness of multi-species approaches in planning to incorporate population genetic information into conservation and management of …
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Behavioural Ecology in Conservation Planning: Individual and Sex-Specific Insights from Woodland Caribou (Rangifer tarandus caribou) in Western Canada
… and habitat selection patterns may reveal ecologically meaningful differences. Analysis of 24 different movement behaviours for female caribou, including migration tendency, home range shape and size, and calving strategies, identified six broad behavioural clusters. Resource selection …
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Adaptation of an invasive grass to agriculture: ecological and genomic evidence
… variation can influence ecological processes. Ecologically meaningful intraspecific variation might be particularly important in the context of agricultural weeds and exotic invaders, because intraspecific variation in these species might allow them to rapidly adapt to their unusually dynamic …
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Enabling human-multi-robot collaborative visual exploration in underwater environments
… exploring real coral reef maps and with real, ecologically meaningful targets of interest. Collectively, these contributions overcome key barriers to vision-based autonomous underwater exploration, and enhance the capability of autonomous underwater vehicles to adapt to new and evolving mission …
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Distribution, patchiness, and behavior of Antarctic zooplankton, assessed using multi-frequency acoustic techniques
… of methods for extracting estimates of ecologically-meaningful quantities from measurements of scattered sound. The distribution of acoustic volume backscattering at the single frequency of 120 kHz was first examined as an index of the overall biomass of zooplankton. Distinct spatial and …
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Investigating the efficiency of reforestation approaches in restoring rainforest biodiversity and function
… emphasising the need to use a variety of ecologically meaningful diversity metrics when investigating the mechanisms and patterns driving ecological recovery. In terms of vegetation structure, microhabitats were more complex and microclimatic conditions were more stable in restored sites …
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Enabling Human-Multi-Robot Collaborative Visual Exploration in Underwater Environments
… exploring real coral reef maps and with real, ecologically meaningful targets of interest. Collectively, these contributions overcome key barriers to vision-based autonomous underwater exploration, and enhance the capability of autonomous underwater vehicles to adapt to new and evolving mission …
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Macroinvertebrate colonization and production in new experimental ponds
… of precision as density and was considered more ecologically meaningful than structural measurements.
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Ecology of benthic macroinvertebrates in experimental ponds
… newly created ponds, and statistically sound and ecologically meaningful metrics. This study also provides a valuable baseline for impact assessment work in experimental ponds.
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Alternative approaches for monitoring aquatic ecosystems: a study on the effects of municipal sewage effluent on biota in the South Saskatchewan River
… feeding groups provided descriptive, and ecologically meaningful information. When combined with the descriptive power of multivariate analyses, functional feeding group data was useful as a rapid bioassessment approach in the evaluation of effluent impacts on river ecosystems. Artificial …
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Structure, distribution and phenology of perennial plant species in the Worcester Veld Reserve, in the arid winter rainfall region of the Southwestern Cape
… by which arid region species can be grouped into ecologically meaningful categories or functional guilds. The formulation of a practical and meaningful functional classification is necessary to facilitate the understanding of complex vegetation patterns and processes within arid ecosystems. and …
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Environmental Flow Determination in Headwater Catchments of Luvuvhu River in Limpopo Province, South Africa
… framework, yet implementation in data-scarce, ecologically sensitive headwaters remains uneven and/or underdeveloped. This study addresses the absence of defensible environmental flow requirements (EFRs) in the upper Luvuvhu River Catchment, a biodiversity-rich yet hydrologically compromised …
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The genetic structure of New Zealand's coastal benthos: using the estuarine clam Austrovenus stutchburyi, to determine rates of gene flow and population connectivity
… distributed taxa may experience low rates of ecologically meaningful connectivity, requiring relatively cautious management at small spatial scales to ensure the persistence of intact biological communities in the face of persistent anthropogenic and natural disturbances.
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Insects in mountainous landscapes: Implications of landscape context and climate change
… including their interactions, can provide more ecologically meaningful insights into tritrophic systems than testing individual hypotheses separately. Although both herbivores will find suitable habitats at their current upper range limit, T. obscura will likely lose some habitat patches at …
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Growth and nutrient relations in black cottonwood in South-Coastal British Columbia
… rooting depth, provided the most biologically meaningful estimates of soil nutrients available to black cottonwood. The ANOVA comparing black cottonwood growth within site units was highly significant (p < .001), and explained 87% of the variance in site index within the 29 study sites. This …