Search Results - "Johnson, Steven D."
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Single-pixel imaging 12 years on: a review
Published in Optics express (14-09-2020)“…Modern cameras typically use an array of millions of detector pixels to capture images. By contrast, single-pixel cameras use a sequence of mask patterns to…”
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The pollination niche and its role in the diversification and maintenance of the southern African flora
Published in Philosophical transactions of the Royal Society of London. Series B. Biological sciences (12-02-2010)“…The flora of southern Africa has exceptional species richness and endemism, making it an ideal system for studying the patterns and processes of evolutionary…”
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3
Pollinator-mediated evolution of floral signals
Published in Trends in ecology & evolution (Amsterdam) (01-05-2013)“…Because most plants rely on animals for pollination, insights from animal sensory ecology and behavior are essential for understanding the evolution of…”
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Darwin's beautiful contrivances: evolutionary and functional evidence for floral adaptation
Published in The New phytologist (01-08-2009)“…Summary 530 I. Introduction 530 II. The process of floral and inflorescence adaptation 532 III. Experimental studies of flowers as adaptations 538 IV. Floral…”
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The long-tongued hawkmoth pollinator niche for native and invasive plants in Africa
Published in Annals of botany (01-01-2016)“…Unrelated organisms that share similar niches often exhibit patterns of convergent evolution in functional traits. Based on bimodal distributions of hawkmoth…”
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Scent chemistry is key in the evolutionary transition between insect and mammal pollination in African pineapple lilies
Published in The New phytologist (01-05-2019)“…Volatile emissions may play a key role in structuring pollination systems of plants with morphologically unspecialised flowers. Here we test for pollination by…”
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THE GEOGRAPHICAL MOSAIC OF COEVOLUTION IN A PLANT–POLLINATOR MUTUALISM
Published in Evolution (01-01-2008)“…Although coevolution is widely accepted as a concept, its importance as a driving factor in biological diversification is still being debated. Because…”
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Mechanisms and evolution of deceptive pollination in orchids
Published in Biological reviews of the Cambridge Philosophical Society (01-05-2006)“…The orchid family is renowned for its enormous diversity of pollination mechanisms and unusually high occurrence of non-rewarding flowers compared to other…”
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Peer review versus the h-index for evaluation of individual researchers in the biological sciences
Published in South African Journal of Science (01-09-2020)“…Past performance is a key consideration when rationalising the allocation of grants and other opportunities to individual researchers. The National Research…”
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10
pollinator shift explains floral divergence in an orchid species complex in South Africa
Published in Annals of botany (01-01-2014)“…Background and AimsFloral diversification driven by shifts between pollinators has been one of the key explanations for the radiation of angiosperms. According…”
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11
Deep learning optimized single-pixel LiDAR
Published in Applied physics letters (02-12-2019)“…Interest in autonomous transport has led to a demand for 3D imaging technologies capable of resolving fine details at long range. Light detection and ranging…”
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Chemical mimicry of insect oviposition sites: a global analysis of convergence in angiosperms
Published in Ecology letters (01-09-2013)“…Floral mimicry of decaying plant or animal material has evolved in many plant lineages and exploits, for the purpose of pollination, insects seeking…”
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Ceropegia sandersonii Mimics Attacked Honeybees to Attract Kleptoparasitic Flies for Pollination
Published in Current biology (24-10-2016)“…Four to six percent of plants, distributed over different angiosperm families, entice pollinators by deception [1]. In these systems, chemical mimicry is often…”
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Reconnecting plants and pollinators: challenges in the restoration of pollination mutualisms
Published in Trends in plant science (2011)“…Ecological restoration of plant–pollinator interactions has received surprisingly little attention, despite animal-mediated pollination underpinning…”
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Floral Mimicry Enhances Pollen Export: The Evolution of Pollination by Sexual Deceit Outside of the Orchidaceae
Published in The American naturalist (01-11-2010)“…Although the majority of flowering plants achieve pollination by exploiting the food‐seeking behavior of animals, some use alternative ploys that exploit their…”
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Geographical covariation and local convergence of flower depth in a guild of fly-pollinated plants
Published in The New phytologist (01-04-2009)“…Plant adaptations to pollinators are usually studied at the species level, but are expected to occur at the local population level and be reflected in…”
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Chemical and morphological filters in a specialized floral mimicry system
Published in The New phytologist (01-07-2015)“…Many plant species attract insect pollinators through chemical mimicry of their oviposition sites, often detaining them in a trap chamber that ensures pollen…”
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Interactions between hawkmoths and flowering plants in East Africa: polyphagy and evolutionary specialization in an ecological context
Published in Biological journal of the Linnean Society (01-09-2013)“…Hawkmoths (Lepidoptera, Sphingidae) are considered important pollinators in tropical regions, but the frequency and degree of reciprocal specialization of…”
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Reproductive isolation between Zaluzianskya species: the influence of volatiles and flower orientation on hawkmoth foraging choices
Published in The New phytologist (01-04-2016)“…Floral trait differences between related species may play a key role in reproductive isolation imposed by pollinators. Volatile emissions can influence…”
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The electrophotonic silicon biosensor
Published in Nature communications (14-09-2016)“…The emergence of personalized and stratified medicine requires label-free, low-cost diagnostic technology capable of monitoring multiple disease biomarkers in…”
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