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 19 of 19 for “"hedgerows"”.
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Spatial and temporal dynamics of plants colonizing species-poor hedgerows
Hedgerows are increasingly being recognised as important in terms of landscape biodiversity. In Britain, recent hedgerows are not valued as highly as ancient hedgerows due to distinct differences in species-richness and historical significance. However, other potential ecological functions of …
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The effects of grassland management practices, and the role of hedgerows, on farmland carbon sequestration and storage
… change from grassland to cropland. The role that hedgerows play in agricultural landscapes to sequester and store carbon was also investigated as these ubiquitous features are routinely missing from carbon assessments. Grassland reseeding resulted in temporary releases of CO2 due to the removal of …
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Bird and Bat Diversity and Abundance in Agroecosystems in Relation to Drainage Hedgerow and Landscape Structure
Hedgerows are common semi-natural linear features along agricultural drainages in temperate agroecosystems. Two important variables likely to affect diversity within hedgerows include hedgerow structure and landscape structure. I hypothesized that hedgerows that are taller, wider, and more variable …
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Participative Approaches to Hedgerow Conservation
… to provide a broader approach to researching hedgerows in England, drawing on the idea that holistic thinking brings together different people’s relationships with hedgerows and with each other concerning hedgerows. The cultural dimensions of hedgerows and their implications for future hedged …
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Utilization of water and light resources by annual crops under semi-arid conditions when planted between Leucaena leucocephala (Lam.) de Wit hedgerows
… water shortages in alley rows close to hedgerows and showed little benefit in altering row orientation for improved light distribution. Water emerged, as expected, as the primary concern to possible adopters of these systems in semi-arid zones. Crop modeling with mechanistic, …
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A critical assessment of botanical indicators as historic markers in wooded landscapes
… the understanding and assessment of woods and of hedgerows (as linear ‘woodlands’) were developed and tested through intensive and extensive field-based case studies. This research investigated and critically assessed the role and value of using botanical indicators as historic markers in wooded …
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The influence of linear landscape features on pollinator behaviour
Linear landscape features such as hedgerows are important wildlife habitats but their functional role in improving connectivity in fragmented habitats remains uncertain. This thesis studied the influence of both natural and artificial linear features on pollinator behaviour at medium and landscape …
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Habitat and landscape-scale effects on the abundance and diversity of macro-moths (Lepidoptera) in intensive farmland
… yields, 3. Moth movement studies along farmland hedgerows and 4. Moth visitation surveys of hedgerow flora. The results of the analysis of county moth records revealed that land-use statistics had a highly significant relationship with the abundance of moths across Northamptonshire. Woodland …
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Habitat use, nest success, and management recommendations for grassland birds of the Canaan Valley National Wildlife Refuge, West Virginia
… of internal edges (i.e., remnant fencelines, hedgerows, and wind breaks) found throughout the grasslands on the refuge.
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Understanding the epidemiology of bovine TB and potential routes of infection by elucidation of fine-scale badger behaviour and movement
… with badgers showing a foraging preference for hedgerows, and avoiding anthropogenic areas including residential housing, roads and farmyards. Across Northern Ireland, bTB prevalence in badgers was found to be 13.27%. This thesis provides further information regarding the ecology of badgers at …
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Is Everything Connected? Following the Predators, Pests, and Plants Within a No-Till, Western Montana Agroecosystem
Agricultural systems are being re-engineered with hedgerows, living mulches, or minimum tillage activities in hopes of retaining populations of beneficial, predatory insects that may decrease the need for pesticide use. The purpose of this research was twofold. First, this on-farm research assessed …
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Is Everything Connected? Following the Predators, Pests, and Plants Within a No-Till, Western Montana Agroecosystem
Agricultural systems are being re-engineered with hedgerows, living mulches, or minimum tillage activities in hopes of retaining populations of beneficial, predatory insects that may decrease the need for pesticide use. The purpose of this research was twofold. First, this on-farm research assessed …
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Factors affecting foraging by breeding farmland birds
… whilst song thrush nest density was greatest in hedgerows and woodland. Birds did not utilise the available habitat at random for nesting. Provisioning skylarks and yellowhammers utilised managed set-aside strips more than would be expected, although both foraged in cereals. Song thrushes foraged …
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The effect of reduced cultivation on selected soil fauna
… at different depths. Both sites were bounded by hedgerows and during one crop year,at Ashley Hall farm, the effect of distance from a hedgerow on the numbers of epigeic fauna caught was studied using pitfall trapping. It was found that there were distinct sets of hedge and field fauna, and that …
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Soil erosion and suspended sediment dynamics in intensive agricultural catchments
… small field sizes partitioned by abundant hedgerows and high drainage ditch densities) resulting in low field-to-channel connectivity. Variations in suspended sediment yield between catchments were explained primarily by soil permeability and ground cover, whereby arable land use on …
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Decomposition and Nitrogen Release From Leucaena leucocephala,senna siamea, and Flemingia macrophylla Litter in managed alleys for maize in Zambia:Infuence of inorganic-N and litter Quality
… and the leguminous species comprised the alley hedgerows. Nylon litterbags with 4 mm mesh size were each filled with 20 g of dry leaf prunings of each species. Five litterbags of each pruning type were randomly buried in a subplot of each treatment. At each sampling time, one bag representing …
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Decomposition and Nitrogen Release From Leucaena leucocephala,senna siamea, and Flemingia macrophylla Litter in managed alleys for maize in Zambia:Infuence of inorganic-N and litter Quality
… and the leguminous species comprised the alley hedgerows. Nylon litterbags with 4 mm mesh size were each filled with 20 g of dry leaf prunings of each species. Five litterbags of each pruning type were randomly buried in a subplot of each treatment. At each sampling time, one bag representing …
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So happy together? : Pollination and reproductive strategy of two sympatric species of Acanthus L. in Kenya
… while A. polystachyus grows in copses and hedgerows of the surrounding farmland, as well as at the forest edge. Through forest fragmentation, A. eminens continues to loose suitable habitats. In addition, the distance of its populations to the congener is reduced, and the relative abundance …
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The spatial ecology and conservation of an important game bird in Ireland: the Eurasian woodcock
… for broadleaved forest and less preference for hedgerows and scrub; these three habitats were of equal importance to not hunted birds. Nocturnally, hunted birds showed greater preference for grassland habitats at night and lower preference for closed habitats. The results are discussed in the …