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 “"scatter-hoarding"”.
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Seed dispersal of western and Utah junipers: the role of scatter-hoarding rodents.
… other juniper species is not fully understood. Scatter-hoarding rodents have been recorded removing seeds and/or cones of several juniper species but have mostly been considered seed predators. In this study I documented harvest and caching of western and Utah juniper seeds, showing that …
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The natural history, sensory ecology and biogeography of the seed dispersal of large fruits in Fynbos
… species have seed traits that suggest they are scatterhoarded by small mammals. The aims of this thesis were to investigate the dispersal biology of large-fruited Fynbos plants by: 1) determining the spatial and taxonomic extent of scatter-hoarding through seed trials, investigating both dry, …
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Seed dispersal by black-backed Jackals (Canis mesomelas) and hairy-footed gerbils (Gerbillurus spp.) of !nara (Acanthosicyos horridus) in the central Namib Desert
… mesomelas) and secondary seed dispersal by scatter-hoarding hairyfooted gerbils (Gerbilliscus (Gerbillurus) spp.) in the central Namib Desert. This was accomplished by examining visitation rates and fruit removal of !nara melons, primarily by jackals. In addition, I determined the viability …
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Rodent Mediated Seed Dispersal of Joshua tree (Yucca brevifolia)
… that Joshua tree seeds are cached by scatter-hoarding rodents and that other dispersal syndromes are unlikely. The majority of Joshua tree fruits monitored were taken directly from Joshua tree canopy by white-tailed antelope ground squirrels, and seeds and fruits on the soil surface …
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Small mammal community structure (Rodentia: Muridae) in Punda Maria, Kruger National Park, South Africa : Causes and consequences
… seeds. Seed dispersal activity was low; no , scatter hoarding was identified; only larder hoarding was observed by Aethomys sp. and M. natalensis at North-facing sites and Acacia sites respectively. Trampling by megaherbivore activity impacted vegetation structure and has negatively affected …
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Seed predation and potential dispersal of Ceratocaryum argenteum (Restionaceae) nuts by the striped mouse (Rhabdomys pumilio) / Joseph Douglas Mandla White
… of Ceratocaryum argenteum (Restionaceae) are scatter-hoarded by rodents and that rodent seed choices and seed fates are affected by seed size and hull thickness. Field trials using three seed types showed that smaller seeds with a high reward and low processing cost were consumed …
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Differences in cache placement and pilferage by desert rodents (Family: Heteromyidae)
… (larder hoard) or in multiple, small seed piles (scatter hoards). In order to maintain seed resources and minimize cache pilferage (removal by other rodents), heteromyid species may use different behavioral strategies. I examined caching and pilfering behaviors of heteromyid rodents in the field …
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How a Central-Place Forager (Callospermophilus lateralis) Modifies its Movement Behavior to Navigate a Risky Landscape and Maximize Fitness
… the summer and winter torpor. Unlike their scatter-hoarding and pilfering competitors, C. lateralis larder-hoards seeds year-round in a central burrow. C. lateralis cannot always be at the burrow to defend the larder from pilferers, however, because they must leave to participate in other …
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Dispersión y predación de semillas por la fauna : implicaciones en la regeneración forestal de bosques templados
… This rapid seed removal, together with the scatter-hoarding behaviour of rodents, allowed the seeds to escape from predation (e. g. by ungulates) and abiotic damage (desiccation, frosts, etc.). Results show the importance of the next factors for tree regeneration: seed quality (size, …