Journal Articles (Biological Sciences)

1980

Daley, D. J., Boyce, M. S.

Environmental variation is often a very important aspect in the ecology of organisms, with most populations experiencing at least seasonal fluctuations in resource availability and thus in their carrying capacity (Annegers 1973; Emmel 1976, chap. 10; Fleming and Hooker 1975; Fretwell 1972). A...

1998-01-01

Cahill, J.F., Casper, B.B.

An experimental approach was used to examine the effects of spatial nutrient heterogeneity and planting density on the sizes of plants within populations of Abutilon theophrasti. Planting locations were generated using random numbers and replicated among populations growing on two different...

1998

Currie, P. J.

In 1910, a collecting party from the American Museum of Natural History led by Barnum Brown floated down the Red Deer River of Alberta. In the Horseshoe Canyon Formation (Edmonton Group, Campanian-Maastrichtian, Upper Cretaceous) close to the mouth of Big Valley Creek, they excavated...

1993

Stirling, I., Derocher, A.E.

If climatic warming occurs, the first impacts on polar bears (Ursus maritirnus) will be felt at the southern limits of their distribution, such as in James and Hudson bays, where the whole population is already forced to fast for approximately four months when the sea ice melts during the summer....

2005

Evenden, M. L.

2004

Gamon, J.A., Cordova, V.D., Schmid, H.P., Rahman, A.F., Sims, D.A.

[1] A physiologically-driven spectral index using two ocean-color bands of MODIS satellite sensor showed great potential to track seasonally changing photosynthetic light use efficiency (LUE) and stress-induced reduction in net primary productivity (NPP) of terrestrial vegetation. Based on these...

2021-06-01

Knight, Elly C., Hernandez, Sergio Poo, Bayne, Erin, Bulitko, Vadim, Tucker, Benjamin V.

A variety of automated classification approaches have been developed to extract species detection information from large bioacoustic datasets. Convolutional neural networks (CNNs) are an image classification technique that can be operated on the spectrogram of an audio recording. Using CNNs for...

2005

Hurd, T.E., Kloppers, E.L., St. Clair, C.C.

Wildlife habituation near urban centers can disrupt natural ecological processes, destroy habitat, and threaten public safety. Consequently, management of habituated animals is typically invasive and often includes translocation of these animals to remote areas and sometimes even their...

2009

Belikov, S. E., Maslanik, J., Aars, J., Born, E. W., Amstrup, S. C., Serreze, M. C., Stirling, I., Wiig, O., Nielson, R. M., DeWeaver, E., Durner, G. M., Bailey, D. A., McDonald, T. L., Mauritzen, M., Holland, M. M., Derocher, A. E., Douglas, D. C.

Projections of polar bear (Ursus maritimus) sea ice habitat distribution in the polar basin during the 21st century were developed to understand the consequences of anticipated sea ice reductions on polar bear populations. We used location data from satellite-collared polar bears and...

2011-01-01

Molnár, Péter K., Derocher, Andrew E., Klanjscek, Tin, Lewis, Mark A.

Predicting the ecological impacts of climate warming is critical for species conservation. Incorporating future warming into population models, however, is challenging because reproduction and survival cannot be measured for yet unobserved environmental conditions. In this study, we use...