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- 2Richardson, Evan Shaun
- 1Abbott, Sean P. (Sean Patrick), 1966-
- 1Abd Elhafiz, Areeg
- 1Abdu, Ashraf H
- 1Abe, Tricia Akemi.
- 1Acosta Amador, Paula N
Here I assess the use of osteoderms in systematics with comparative material from fossil and extant tetrapod taxa. Putative differences among three groups (ankylosaurid, nodosaurid, and polacanthid) were evaluated. Archosaur osteoderms have cortices surrounding a cancellous core. Ankylosaurs are...
The contribution of two phosphorylated surface modifications on the pathogenesis of Campylobacter upsaliensisDownload
Campylobacter upsaliensis is a human pathogen most commonly associated with self-limiting gastroenteritis. Despite extensive epidemiological data indicating C. upsaliensis as an emerging pathogen, few studies have examined possible mechanisms of its virulence. The surface of C. upsaliensis is...
I investigated how songbirds respond to seismic lines as the vegetation cover on lines regenerates and how long seismic line effects on songbirds persist. I found that line age was poorly correlated with natural vegetation recovery and that after an initial increase in recovery after 20 years the...
Alestidae (African tetras) is one of the most species-rich families of the order Characiformes and exhibits a pronounced diversity of body size. Two independent miniaturization events (a drastic phylogenetic decrease in body size) have been identified in Alestidae. Miniaturization is frequently...
Cenozoic ichthyofaunas of the North American Western Interior, and palaeoclimatic and palaeoenvironmental reconstructionsDownload
The Cenozoic fluvial fish faunas of the North American Western Interior are poorly known in comparison to better preserved lake ichthyofaunas, such as that of the Green River Formation. However, fluvial fishes are typically represented by disarticulated material, which is more commonly preserved...
The effects of defoliation on growth, reproduction and pollination of a non-native legume (Astragalus cicer) in the mixedgrass prairieDownload
Herbivory can lead to trade-offs between plant growth and reproduction as defoliated plants lose initial resource investments and have reduced photosynthetic capacity. This trade-off can lead to reduced investment into reproductive structures and have repercussions for floral traits, pollinator...
Benthic Responses to Nitrogen and Phosphorus Deposition on Alpine Ponds in Banff National Park: A Replicated Whole-Ecosystem ExperimentDownload
Nitrogen (N) and Phosphorous (P) deposition at high elevations has increased by 40% over the last fifteen years, causing concern for the 3000+ alpine ponds in Banff National Park. A novel whole-ecosystem experiment was used to test for the effects of elevated N and P deposition on benthic...