Journal Articles (Biological Sciences)

2013-01-01

Bohlmann, Jörg, Bonnett, Tiffany R., Pitt, Caitlin, Keeling, Christopher I., Yuen, Macaire M. S., Huber, Dezene P. W., Robert, Jeanne A.

The mountain pine beetle, Dendroctonus ponderosae, is a native species of bark beetle (Coleoptera: Curculionidae) that caused unprecedented damage to the pine forests of British Columbia and other parts of western North America and is currently expanding its range into the boreal forests of...

1988

Blum, KI , Reppy, J. D. , Chan, MHW , Wong, Gane K., Murphy, SQ

1996-01-01

Mark Kot, Mark A. Lewis, P. van den Driessch

Models that describe the spread of invading organisms often assume that the dispersal distances of propagules are normally distributed. In contrast, measured dispersal curves are typically leptokurtic, not normal. In this paper, we consider a class of models, integrodifference equations, that...

1996-01-01

Lewis, Mark A., Veit, R.R.

Since about 1940, when they were first released in the new York City area, house finches (Carpodacus mexicanus) have multiplied explosively and colonized much of eastern North America. We take advantage of the richly detailed documentation of this biological invasion to construct a mathematical...

2008-01-01

Cahill, J. F., Shore, B. H., Smith, G. R., Elle, E.

Plants engage in diverse and intimate interactions with unrelated taxa. For example, aboveground. oral visitors provide pollination services, while belowground arbuscular mycorrhizal fungi (AMF) enhance nutrient capture. Traditionally in ecology, these processes were studied in isolation,...

2015-04-02

Carpenter, Eric J., Xie, Yinlong, Soltis, Douglas E. , Covshoff, Sarah, Smith, Stephen A. , Moore, Michael J., Brockington, Samuel F., Hibberd, Julian M., Sage, Rowan F., Nelson, Matthew N., Yang, Ya, Chen, Li, Yan, Zhixiang, Zhang, Yong, Wong, Gane K.

2009

Stockey, R.A., Rothwell, G.W.

A remarkably diverse Lower Cretaceous (Valanginian-Hauterivian) fl ora at Apple Bay, Vancouver Island, preserves seed plants at an important time of fl oristic evolutionary transition, about the same time as the earliest fl owering plant megafossils. The fossils are permineralized in carbonate...

2009

Gelder, S. R., Williams, B. W., Proctor, H. C.

ABSTRACT.—Orconectes virilis (northern crayfish) were collected from 67 sites in Alberta, Saskatchewan, Manitoba, and far-western Ontario, Canada, and yielded 2 species of branchiobdellidans, Cambarincola vitreus and Cambarincola chirocephalus. This is the first report of branchiobdellidans in...

2011

Williams, B. W., Williams, K. L., Gelder, S. R., Proctor, H. C.

ABSTRACT.—Northern crayfish, Orconectes virilis (Hagen, 1870), were collected from 89 sites across Alberta, Saskatchewan, Manitoba, Montana, North Dakota, and Minnesota. The entocytherid ostracod Thermastrocythere riojai (Hoff, 1943) was found on O. virilis at 45 of the 89 sites, distributed...

1991

Kuhlemeir, Cris, Holfmann, Sylvia, Owtrim, George W.

Three cDNA clones coding for eukaryotic translation initiation factor 4A, elF-4A, were isolated from a Nicotiana plumbaginifolia root cDNA library by heterologous screening. The clones comprise two distinct gene classes as two clones are highly similar while the third is divergent. The genes...