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 9 of 9 for “"Plant-animal Interactions"”.
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Ecology of plant-animal interactions during plant population expansion processes
Plant-animal interactions are crucial for maintaining ecosystem functionality and biodiversity. Ecological research has shown that these interactions can be modified in different contexts, affecting natural dynamics. Currently, significant changes in the landscape, such as rural abandonment or the …
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Rodents and Restionaceae : sex-specific plant-animal interactions in dioecious plants
Differing plant canopy structures between the sexes of the dioecious Cannomois congesta (Restionaceae) were found to be the result of the destructive pre-dispersal seed predation methods used by the four-striped grass mouse (Rhabdomys). Mature, reproductive culms on female plants were felled down …
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The effect of ocean acidification on plant-animal interactions in a <i>Posidonia oceanica</i> meadow
… shelter and food for a highly diversified plant and animal community, and nursery for several commercial species of fish and bivalves. This thesis aims to provide a broad overview of the effect of acidification on <i>P. oceanica</i>, and its associated community, through observation of …
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Studies of herbivory and vegetation change in Karoo shrublands
… background of relationships between indigenous plants and animals and to indicate how modification of herbivore regimes might affect this arid environment. Specific objectives were to determine how grazing by domestic livestock brings about vegetation change, why such changes are sometimes …
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An investigation on the potential interactions between colophospermum mopane and its neighbouring understory vegetation
… of C. mopane to disturbance and also on the plant-animal interactions; the reproductive strategies of C. mopane also formed part of this current work. The competitive interactions were established by this study wherein a complete permanent removal of C. mopane resulted in the growth, …
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Biotic and abiotic mechanisms shaping multi-species interactions
Interactions are important drivers of selection and community structure, which makes the study of multi-species interactions critical for understanding the ecology and evolution of organisms. This dissertation includes four data chapters that examine the biotic and abiotic mechanisms that shape …
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Oddziaływania rośliny-zwierzęta w zmiennym środowisku: jak lata nasienne oraz depozycja azotu wpływają na populacje konsumentów oraz na roznoszenie i konsumpcję nasion
Pulsy zasobów to epizody zwiększonej dostępności zasobów w środowisku. Zjawisko to wpływa na liczne procesy ekologiczne takie jak dynamika liczebności populacji zwierząt i roślin, oddziaływania pomiędzy konsumentami i zasobami, czy prewalencję chorób w populacjach zwierząt. Lata nasienne, …
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Life history and reproductive ecology of selected proteaceae in the mountain Fynbos Vegetation of the South-Western Cape
… a factor which has shaped the life-histories of plants in fire-prone Mediterranean shrublands. Fire regimes are not simply products of the abiotic elements of climate and ignition sources. The biotic component makes a significant contribution because community structure and processes like litter …
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The Effects of Hackberry Psyllids on Refueling Migratory Songbirds and Autumnal Seed Rain
<p>Hackberry psyllids (<em>Pachypsylla sp</em>) are a galling insect native to North America’s hackberry trees (<em>Celtis sp</em>). Hackberry leaf-galling psyllids are ephemerally abundant during autumn, a period of time when migratory songbirds are traveling from their breeding areas in temperate …