Search
Skip to Search Results- 14Graduate and Postdoctoral Studies (GPS), Faculty of
- 14Graduate and Postdoctoral Studies (GPS), Faculty of /Theses and Dissertations
- 8Biological Sciences, Department of
- 8Biological Sciences, Department of/Journal Articles (Biological Sciences)
- 3Mathematical and Statistical Sciences, Department of
- 3Mathematical and Statistical Sciences, Department of/Research Publications (Mathematical and Statistical Sciences)
-
"Stories Matter:" A Narrative Inquiry Exploring First-Generation University Student Persistence
DownloadFall 2014
Though postsecondary participation has increased overall, the rate of participation has risen more sharply for middle-class students compared with working-class students (Knighton & Mirza, 2002). Especially pronounced is Krahn’s (2009) finding that children from families where at least one...
-
Fall 2013
Species invasions are increasing worldwide and are impacting populations, communities, and ecosystems. Non-native species that are ecosystem engineers, such as earthworms, may be particularly likely to have large impacts due to their ability to modify both biological and physical characteristics...
-
2001-01-01
Holt, R. D., Lewis, Mark A., Keitt, T. H.
All species’ ranges are the result of successful past invasions. Thus, models of species’ invasions and their failure can provide insight into the formation of a species’ geographic range. Here, we study the properties of invasion models when a species cannot persist below a critical population...
-
2004-01-01
Predictions for climate change include movement of temperature isoclines up to 1000 meters per year, and this is supported by recent empirical studies. This paper considers effects of a rapidly changing environment on competitive outcomes between species. The model is formulated as a system of...
-
Deciphering the molecular mechanisms underlying the pathobiology of esophageal squamous cell carcinoma
DownloadFall 2015
Esophageal squamous cell carcinoma (ESCC) is one of the most lethal cancers worldwide, largely due to a high frequency of tumor invasion/metastasis, chemoresistance and recurrence. In this study, we explored from different perspectives the molecular mechanisms behind these aggressive features of...
-
2006-01-01
McCauley, E., Lewis, Mark A., Lutscher, F.
The question how aquatic populations persist in rivers when individuals are constantly lost due to downstream drift has been termed the “drift paradox.” Recent modeling approaches have revealed diffusion-mediated persistence as a solution. We study logistically growing populations with and...
-
2003
McLachlan, J. S., Lewis, M. A., HilleRisLambers, J., Clark, J. S.
Recent literature on plant population spread advocates quantification of long-distance dispersal (LDD). These estimates could provide insights into rates of migration in response to climate change and rates of alien invasions. LDD information is not available for parameterization of current...
-
Linking occurrence and fitness to persistence: habitat-based approach for endangered greater sage-grouse
Download2007
Detailed empirical models predicting both species occurrence and fitness across a landscape are necessary to understand processes related to population persistence. Failure to consider both occurrence and fitness may result in incorrect assessments of habitat importance leading to inappropriate...