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- 28Biological Sciences, Department of/Research Data and Materials (Biological Sciences)
- 26Biological Sciences, Department of/Journal Articles (Biological Sciences)
- 6Biological Sciences, Department of/Other Publications (Biological Sciences)
- 1Biological Sciences, Department of/R.E. Peter Biology Conference
- 1Cahill Lab of Experimental Plant Ecology
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2018-01-01
Windsor Reid, Pamela J., Matveev, Eugueni, McClymont, Alexandra, Posfai, Dora, Hill, April L., Leys, Sally P.
Background: The Wnt signaling pathway is uniquely metazoan and used in many processes during development, including the formation of polarity and body axes. In sponges, one of the earliest diverging animal groups, Wnt pathway genes have diverse expression patterns in different groups including...
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Variation in premaxillary tooth count and a developmental abnormality in a tyrannosaurid dinosaur
Download2010
Tanke, D. H., Currie, P. J., Miyashita, T.
Premaxillary tooth count tends to be stable amongst toothed dinosaurs, and most theropods have four teeth in each premaxilla. Only one case of bilaterally asymmetric variation is known in theropod premaxillary dentition, and there is no record of ontogenetic or individual variation in...
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2018-01-15
Khan, Amanda S., Chu, Jackson W. F., Leys, Sally P.
Sponges link the microbial loop with benthic communities by feeding on bacteria. Glass sponge reefs on the continental shelf of western Canada have extremely high grazing rates, consuming seven times more particulate carbon than can be supplied by vertical flux alone. Unlike many sponges, the...
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The role of terrestrial vegetation in atmospheric Hg deposition: Pools and fluxes of spike and ambient Hg from the METAALICUS experiment
Download2012
Graydon, J.A., Harris, R., St. Louis, V., Sandilands, K.A., Rudd, J.W.M., Kelly, C.A., Richardson, M., Emmerton, C.A., Lindberg, S.E., Tate, M.T., Asmath, H., Krabbenhoft, D.P.
As part of the Mercury Experiment to Assess Atmospheric Loading in Canada and the U.S. (METAALICUS), different stable Hg(II) isotope spikes were applied to the upland and wetland areas of a boreal catchment between 2001 and 2006 to examine retention of newly deposited Hg(II). In the present...
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The Aquatic Angiosperm Trapago angulata from the Upper Cretaceous (Maastrichtian) St. Mary River Formation of Southern Alberta.
Download1997
A floating aquatic dicot with leaves assignable to Trapago angulata has been characterized from Upper Cretaceous (Maastrichtian) deposits of the St. Mary River Formation in southern Alberta, Canada. Reconstruction of the plant is based on nearly 500 specimens of various isolated and attached...
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Taking a Multispecies Approach to Evaluating the Effectiveness of Wildlife Passages for Small and Medium Sized Mammals in an Eastern Canadian Boreal Forest
Download2015-09-21
Descrochers, André, Jaeger, Jochen, Martinig, April Robin
Poster presented at the International Conference on Ecology and Transportation in 2015. Research is an investigation into the effectiveness of three different types of wildlife passages along Highway 175 in northern Quebec for small and medium sized mammals using infrared cameras. Two research...
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Sycon coactum - transcriptome
2014-02-27
Sponges (Porifera) are among the earliest evolving metazoans. Their filter-feeding body plan based on choanocyte chambers organized into a complex aquiferous system is so unique among metazoans that it either reflects an early divergence from other animals prior to the evolution of features such...
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Supplementary Files for: Sponge behaviour and the chemical basis of responses: a post-genomic view
Download2019-05-25
Sponges perceive and respond to a range of stimuli. How they do this is still difficult to pin down despite now having transcriptomes and genomes of an array of species. Here we evaluate the current understanding of sponge behaviour and present new observations on sponge activity in situ. We also...
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Supplementary Data (Table 4.1) associated with "Nitrogen And Phosphorus Cycling Through Marine Sponges: Physiology, cytology, genomics, and ecological implications"
Supplementary Data (Table 4.1) associated with "Nitrogen And Phosphorus Cycling Through Marine Sponges: Physiology, cytology, genomics, and ecological implications"
Download2022-01-11
Maldonado, M, Bayer, K, Lopez-Acosta, M
SUMMARY Several inorganic compounds of nitrogen (N) and phosphorus (P) are key to ocean ecology because, among other effects, they sustain primary production. After discovering in the 1980s that sponges can be both source and sink of such nutrients, much has been learned, including that fluxes...