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- 17Biological Sciences, Department of/Journal Articles (Biological Sciences)
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Growth and Physiological Responses of Conifer Seedlings to Salt Stress and Nutrient Deficiency
DownloadSpring 2018
Oil sands extraction and refining can cause many negative environmental impacts and because these activities usually take place in the forest region, the Government of Alberta requires that, after mine sites are closed, the companies perform reclamation. The properties of reclaimed oil sands...
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Growth Architecture of Thucydia mahoningensis, a Model for Primitive Walchian Conifer Plants.
Download2003
Stockey, R.A., Mapes, G., Hernandez‐Castillo, G.R., Rothwell, G.W.
A large number of vegetative and fertile branching systems of Thucydia mahoningensis provide data for interpreting the growth architecture and life-history pattern of a primitive Paleozoic conifer. Internal anatomy is similar to modern conifers, indicating an arborescent life-history pattern....
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Molecular phylogeny, historical biogeography, and divergence time estimates for swallowtail butterflies of the genus Papilio (Lepidoptera: Papilionidae)
Download2004
Sperling, F.A.H., Zakharov, E.V., Caterino, M.S.
Swallowtail butterflies are recognized as model organisms in ecology, evolutionary biology, genetics, and conservation biology but present numerous unresolved phylogenetic problems. We inferred phylogenetic relationships for 51 of about 205 species of the genus Papilio (sensu lato) from...
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Osmunda vancouverensis sp. nov. (Osmundaceae), permineralized fertile frond segments from the Lower Cretaceous of British Columbia, Canada.
Download2006
Vavrek, M.J., Stockey, R.A., Rothwell, G.W.
The Lower Cretaceous (Valanginian to Hauterivian) Apple Bay locality onVancouver Island, British Columbia, has yielded several fragments of fertile permineralized osmundaceous pinnae. Specimens are preserved in calcareous concretions, showing both internal anatomy and allowing for the...
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Phylogenetic diversification of Equisetum (Equisetales) as inferred from Lower Cretaceous species of British Columbia
Download2009
Stockey, Ruth A., Stanich, Nicholas A., Rothwell, Gar W.
Three types of anatomically preserved vegetative shoots with features that characterize crown group Equisetum have been discovered in Lower Cretaceous deposits ( ≈ 136 Ma) of British Columbia, Canada, suggesting the genus is much older than currently believed. Specimens include two types of...