Journal Articles (Biological Sciences)

2002

Sytsma, Kenneth J., Hall, Jocelyn C., Iltis, Hugh H.

Capparaceae and Brassicaceae have long been known to be closely related families, with the monophyly of Capparaceae more recently questioned. To elucidate the relationship between Brassicaceae and Capparaceae as well as to address infrafamilial relationships within Capparaceae, we analyzed...

2002

Sperling, F. A. H., Kruse, J. J.

Abstract: The Holarctic Archips xylosteana Group consists of at least 18 morphologically similar species in the Nearctic, three of which were synonymized with A. argyrospila by Razowski and subsequently returned to species status, two that were described since 1986 but are clearly related to A....

2012-01-01

Cullingham, Catherine I., Sperling, Felix A. H., Coltman, David W., Roe, Amanda D.

Irruptive forest insect pests cause considerable ecological and economic damage, and their outbreaks have been increasing in frequency and severity. We use a phylogeographic approach to understand the location and progression of an outbreak by the MPB (Dendroctonus ponderosae Hopkins), an...

2015-07-28

Melkonian, Michael , Pryer, Kathleen M , Rothfels, Carl J , Graham, Sean W , Li, Fay-Wei , Villarreal, Juan C , Wong, Gane K, Stevenson, Dennis W, Mathews, Sarah

2005

Gorodkin, J., Christensen, O. F., Jørgensen, F. G., Yang, H., Bendixen, C., Brunak, S., Wernersson, R., Panitz, F., Hornshøj, H., Mailund, T., Wong, G.K.S., Dong, W., Wang, J., Li, W., Klein, A., Fredholm, M., Hu, S., Stærfeldt, H.-H., Bolund, L., Liu, B., Schierup, M. H., Yu, J.

Background Comparative whole genome analysis of Mammalia can benefit from the addition of more species. The pig is an obvious choice due to its economic and medical importance as well as its evolutionary position in the artiodactyls. Results We have generated ~3.84 million shotgun sequences...

1995

Stockey, R.A., Osborn J.M., Phipps, C.J.

Anatomically preserved pollen cones are described from the Middle Eocene Princeton chert of British Columbia, Canada. Cones are ellipsoidal; range from 2.8 to 6.9 mm in length, 1.6 to 3.5 mm in diameter; and are often subtended by scale leaves. Cone axes contain longitudinally oriented, cortical...

1992

Paszkowski, C. A., Tonn, W. M., Holopainen, I. J.

Detecting mechanisms that structure ecological communities often requires investigations at appropriate spatial and temporal scales. A 15-mo, whole-lake experiment revealed direct and indirect mechanisms by which a fish predator structured its prey population, primarily by affecting recruitment...

2005

McMaster, N. L., Schindler, D. W.

We surveyed 14 ponds in 1999 and 28 ponds in 2000 to better understand the basic limnology of alpine ponds and to predict how the planktonic and epipelic (sediment-living) algal communities may respond to nutrient deposition and climate change. Based on nitrogen to phosphorus ratios, nitrogen...

2009-01-01

Cahill, J. F., Mitchell, M. G. E., Hik, D. S.

We investigated whether plant interaction intensity in a subarctic-alpine meadow is important for determining community structure and species abundance. Using two common species as phytometers, we measured interaction intensity using a neighbor removal approach. Eight biotic and abiotic variables...

2005-01-01

Kembel, S.W., Cahill, J.F.

Many plants proliferate roots in nutrient patches, presumably increasing nutrient uptake and plant fitness. Nutrient heterogeneity has been hypothesized to maintain community diversity because of a trade-off between the spatial extent over which plants forage (foraging scale) and their ability to...