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- 870Biological Sciences, Department of/Journal Articles (Biological Sciences)
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- 109Mathematical and Statistical Sciences, Department of
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- 419University of Alberta, Department of Biological Sciences
- 138Sawchuk, Matthew
- 81Mark A. Lewis
- 52Lewis, Mark A.
- 52Stockey, R.A.
- 23Wishart, D.S.
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Interannual variability in trophic status of shallow lakes on the boreal Plain: Is there a climate signal?
Download2008
Devito, K.J., Bayley, S.E., Creed, I.F., Sass, G.Z.
We explored relations between climate and trophic status of shallow lakes (lake area > 5 ha, mean depth < 3.2 m) located on the subhumid western Boreal Plain of Canada. Correlation and regression analyses were used to assess the association between indicators of climate and satellite-based...
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Intrinsic rate of increase and temperature coefficients of the aphid parasite Ephedrus californicus baker (Hymenoptera: Aphidiidae)
Download1987
The demographic statistics and the temperature requirements for development of Ephedrus californicus Baker were determined under constant laboratory conditions. At 23°C, females provided each day with forty 2nd-instar pea aphids, Acyrthosiphon pisum (Harris), lived for 13.4 days and laid 1193...
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Introgression potential between safflower (Carthamus tinctorius) and wild relatives of the genus Carthamus
Download2011
Christianson, Jed, Mayerhofer, Marion, Topinka, Deborah, Good, Allen G., Mayerhofer, Reinhold
Background: Safflower, Carthamus tinctorius, is a thistle that is grown commercially for the production of oil and birdseed and recently, as a host for the production of transgenic pharmaceutical proteins. C. tinctorius can cross with a number of its wild relatives, creating the possibility of...
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2001-01-01
Clark, James S., Lewis, Mark A., Horvath, Lajos
For populations having dispersal described by fat‐tailed kernels (kernels with tails that are not exponentially bounded), asymptotic population spread rates cannot be estimated by traditional models because these models predict continually accelerating (asymptotically infinite) invasion. The...
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2002
Lewis, M. A., Fagan, W. F., Neubert, M. G.
Recent advances in the mathematical theory of invasion dynamics have much to offer to biological control. Here we synthesize several results concerning the spatiotemporal dynamics that occur when a biocontrol agent spreads into a population of an invading pest species. We outline conditions under...
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2015-09-28
Meiosis in eukaryotes includes a developmentally programmed pre-meiotic G2 phase arrest before the onset of MI division mediated by inhibitory phosphorylation of Cdk1. There are two inhibitory kinases, Wee1 and Myt1. Myt1 mediated Cyclin B-Cdk1 regulation serves as a conserved mechanism for...