David Sneddon
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View article: Not So Mosaic After All? The Core Genomes of IncP-1 Plasmids Evolve Predominantly Through Vertical Transmission
Not So Mosaic After All? The Core Genomes of IncP-1 Plasmids Evolve Predominantly Through Vertical Transmission Open
Broad-host-range plasmids of the incompatibility group IncP-1 play an important role in bacterial evolution by disseminating genes between diverse bacteria. This includes the notable spread of antibiotic resistance genes to bacterial patho…
View article: Evolution of a Plasmid Regulatory Circuit Ameliorates Plasmid Fitness Cost
Evolution of a Plasmid Regulatory Circuit Ameliorates Plasmid Fitness Cost Open
Plasmids promote adaptation of bacteria by facilitating horizontal transfer of diverse genes, notably those conferring antibiotic resistance. Some plasmids, like those of the incompatibility group IncP-1, are known to replicate and persist…
View article: Revealing the invisible floor: Integrated geoarchaeological analyses of ephemeral occupation surfaces at an early medieval farmhouse in upland Perthshire, Scotland
Revealing the invisible floor: Integrated geoarchaeological analyses of ephemeral occupation surfaces at an early medieval farmhouse in upland Perthshire, Scotland Open
Poorly defined occupation surfaces restrict the ability to interpret the use of space in archaeological structures and settlements around the world. Integrated geoarchaeological methods, such as soil chemistry and micromorphology, can prov…
View article: Data from Comparative Phylogeography of Leaf-litter dwelling invertebrates from the Pacific Northwest
Data from Comparative Phylogeography of Leaf-litter dwelling invertebrates from the Pacific Northwest Open
Images from leaf litter invertebrates from the Pacific Northwest of North America.
View article: Data from Comparative Phylogeography of Microsnails from the Pacific Northwest
Data from Comparative Phylogeography of Microsnails from the Pacific Northwest Open
Images from leaf litter invertebrates from the Pacific Northwest of North America.
View article: Comprehensive Phylogenomics of <i>Methylobacterium</i> Reveals Four Evolutionary Distinct Groups and Underappreciated Phyllosphere Diversity
Comprehensive Phylogenomics of <i>Methylobacterium</i> Reveals Four Evolutionary Distinct Groups and Underappreciated Phyllosphere Diversity Open
Methylobacterium is a group of methylotrophic microbes associated with soil, fresh water, and particularly the phyllosphere, the aerial part of plants that has been well studied in terms of physiology but whose evolutionary history and tax…
View article: Comprehensive phylogenomics of <i>Methylobacterium</i> reveals four evolutionary distinct groups and underappreciated phyllosphere diversity
Comprehensive phylogenomics of <i>Methylobacterium</i> reveals four evolutionary distinct groups and underappreciated phyllosphere diversity Open
Methylobacterium is a group of methylotrophic microbes associated with soil, fresh water, and particularly the phyllosphere, the aerial part of plants that has been well-studied in terms of physiology but whose evolutionary history and tax…
View article: Fine-Scale Adaptations to Environmental Variation and Growth Strategies Drive Phyllosphere <i>Methylobacterium</i> Diversity
Fine-Scale Adaptations to Environmental Variation and Growth Strategies Drive Phyllosphere <i>Methylobacterium</i> Diversity Open
Methylobacterium is a bacterial group tied to plants. Despite the ubiquity of methylobacteria and the importance to their hosts, little is known about the processes driving Methylobacterium community dynamics.
View article: Revealing the Invisible Floor: Integrated Geoarchaeological Analyses of Ephemeral Occupation Surfaces at an Early Medieval Farmhouse in Upland Perthshire, Scotland
Revealing the Invisible Floor: Integrated Geoarchaeological Analyses of Ephemeral Occupation Surfaces at an Early Medieval Farmhouse in Upland Perthshire, Scotland Open
View article: Fine-Scale Adaptations to Environmental Variation and Growth Strategies Drive Phyllosphere <i>Methylobacterium</i> Diversity
Fine-Scale Adaptations to Environmental Variation and Growth Strategies Drive Phyllosphere <i>Methylobacterium</i> Diversity Open
Methylobacterium is a prevalent bacterial genus of the phyllosphere. Despite its ubiquity, little is known about the extent to which its diversity reflects neutral processes like migration and drift, versus environmental filtering of life …
View article: Diversification, Introgression, and Rampant Cytonuclear Discordance in Rocky Mountains Chipmunks (Sciuridae: <i>Tamias</i>)
Diversification, Introgression, and Rampant Cytonuclear Discordance in Rocky Mountains Chipmunks (Sciuridae: <i>Tamias</i>) Open
Evidence from natural systems suggests that hybridization between animal species is more common than traditionally thought, but the overall contribution of introgression to standing genetic variation within species remains unclear for most…
View article: Early Medieval Settlement in Upland Perthshire: Excavations at Lair, Glen Shee 2012-17
Early Medieval Settlement in Upland Perthshire: Excavations at Lair, Glen Shee 2012-17 Open
View article: Does microhabitat influence cryptic diversity?: An investigation using microsnails (Punctum randolphi) from the Pacific Northwest rainforests.
Does microhabitat influence cryptic diversity?: An investigation using microsnails (Punctum randolphi) from the Pacific Northwest rainforests. Open
The Pacific Northwest temperate rainforests are biodiversity hotspots with a dramatic geological history, with many species endemic to forests in the Cascades mountains. The Pleistocene glacial cycles drastically impacted the ranges of the…