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Skip to Search Results- 19Population dynamics
- 15Animal movement
- 3Climate change
- 3Mathematical ecology
- 3Mechanistic models
- 2Advection–diffusion
- 8Mark A. Lewis
- 4Jonathan R. Potts
- 3Lewis, Mark A.
- 2Andrew E. Derocher
- 2Beyer, H. L.
- 2DeMars, Craig A
- 19Biological Sciences, Department of
- 18Biological Sciences, Department of/Journal Articles (Biological Sciences)
- 10Graduate and Postdoctoral Studies (GPS), Faculty of
- 10Graduate and Postdoctoral Studies (GPS), Faculty of/Theses and Dissertations
- 7Mathematical and Statistical Sciences, Department of
- 7Mathematical and Statistical Sciences, Department of/Research Publications (Mathematical and Statistical Sciences)
- 3Boutin, Stan (Biological Sciences)
- 2Lewis, Mark (Mathematical and Statistical Sciences)
- 1Bayne, Erin (Biological Sciences)/ Villard, Marc-André (Biologie; Université de Moncton)
- 1Boonstra, Rudy (Biological Sciences, University of Toronto Scarborough)
- 1De Vries, Gerda (Mathematical and Statistical Sciences)
- 1Dr. Erin Bayne - Department of Biological Sciences
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A mechanistic model for understanding invasions: using the environment as a predictor of population success
Download2011-01-01
DiBacco, C., Lewis, Mark A., Strasser, C. A.
Aim We set out to develop a temperature-and salinity-dependent mechanistic population model for copepods that can be used to understand the role of environmental parameters in population growth or decline. Models are an important tool for understanding the dynamics of invasive species; our model...
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2021-01-01
Mariana Nagy-Reis, Jody R. Reimer, Mark A. Lewis, William F. Jensen, Mark S. Boyce
Models of population dynamics are a central piece for harvest management, allowing managers to evaluate alternative strategies and to identify uncertainty. Here we present a density-dependent population dynamics model that can be used in conjunction with adaptive management to optimize big game...
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Are the “ seeds ” of spatial variation in cyclic dynamics apparent in spatially-replicated short time-series ? An example from the forest tent caterpillar
Download2005
Variation in the pattern of dynamics of the forest tent caterpillar was assessed over a 13-year interval of population collapse and increase among 68 sites within a 420 km2 region. Patterns of population change were compared with the level of forest fragmentation among sites, and interpreted in...
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Biology and integrated management of wheat stem sawfly, cephus cinctus norton (hymenoptera: cephidae), with a discussion of needs for future research
Download2011
Dosdall, Lloyd M., Spaner, Dean M., Cárcamo, Hector A., Beres, Brian L.
The wheat stem sawfly, Cephus cinctus Norton (Hymenoptera: Cephidae), is historically one of the most important economic insect pests in the northern Great Plains of North America. Within this geographical region, the areas subjected to greatest attack are southern Alberta and Saskatchewan,...
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Fall 2015
The boreal ecotype of woodland caribou (Rangifer tarandus caribou) is federally listed as Threatened due to population declines throughout its distribution. High mortality rates of neonate calves (≤ 4 weeks old) due to predation are a key demographic factor contributing to population declines...
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Coupling mountain pine beetle and forest population dynamics predicts transient outbreaks that are likely to increase in number with climate change
Download2023-09-27
Mountain pine beetle (MPB) in Canada have spread well beyond their historical range. Accurate modelling of the long-term dynamics of MPB is critical for assessing the risk of further expansion and informing management strategies, particularly in the context of climate change and variable forest...
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Detecting minimum energy states and multi-stability in nonlocal advection–diffusion models for interacting species
Download2022-06-13
Valeria Giunta, Thomas Hillen, Mark A. Lewis, Jonathan R. Potts
Deriving emergent patterns from models of biological processes is a core concern of mathematical biology. In the context of partial differential equations, these emergent patterns sometimes appear as local minimisers of a corresponding energy functional. Here we give methods for determining the...
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Effects of climate and forest structure on duration of forest tent caterpillar outbreaks across central Ontario, Canada
Download1998
Cooke, B., Roland, J., Mackey, B. G.
Abstract: We examined the effect of forest structure and climate enlarge-scale and long-term patterns of outbreaks of forest tent caterpillar, Malacosoma disstria Hbn., across central Ontario. This was done using previously published data on outbreak duration and forest heterogeneity, combined...
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2014
Lewis, M.A., Derocher, A.E., Molnár, P.K.
Allee effects are an important component in the population dynamics of numerous species. Accounting for these Allee effects in population viability analyses generally requires estimates of low-density population growth rates, but such data are unavailable for most species and particularly...
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2016-09-01
Auger‐Méthé, Marie, Derocher, Andrew E, DeMars, Craig A, Plank, Michael J, Codling, Edward A., Lewis, Mark A, Fryxell, John
Searching allows animals to find food, mates, shelter and other resources essential for survival and reproduction and is thus among the most important activities performed by animals. Theory predicts that animals will use random search strategies in highly variable and unpredictable environments....