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2019-01-01

Mariana B. Nagy-Reis, Mark A. Lewis, William F. Jensen, Mark S. Boyce

Understanding the underlying mechanisms driving population demographics such as species-habitat relationships and the spatial scale in which these relationships occur is essential for developing optimal management strategies. Here we evaluated how landscape characteristics and winter severity...

2022-01-01

Christopher M. Heggerud, Hao Wang, Mark A. Lewis

2021-01-01

Arezoo Haratian, Hadi Fazelinia, Zeinab Maleki, Pouria Ramazi, Hao Wang, Mark A. Lewis, Russell Greiner, David Wishart

This dataset provides information related to the outbreak of COVID-19 disease in the United States, including data from each of 3142 US counties from the beginning of the outbreak (January 2020) until June 2021. This data is collected from many public online databases and includes the...

2020-02-01

Melodie Kunegel-Lion, Rory L. McIntosh, Mark A. Lewis

The data presented in this article are related to the research article entitled “Mountain pine beetle outbreak duration and pine mortality depend on direct control effort” [1]. This article provides presence of mountain pine beetle infested trees detected by the Saskatchewan Forest Service on a...

2022-06-13

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...

2021-01-01

Peter R. Thompson, Andrew E. Derocher, Mark A. Edwards, Mark A. Lewis

Spatial memory plays a role in the way animals perceive their environments, resulting in memory-informed movement patterns that are observable to ecologists. Developing mathematical techniques to understand how animals use memory in their environments allows for an increased understanding of...

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...

2020-01-01

Stephanie J. Peacock, Martin Krkošek, Andrew W. Bateman, Mark A. Lewis

Parasite transmission between farmed and wild salmon affects the sustainability of salmon aquaculture in Pacific Canada. Understanding and managing parasites in aquaculture is challenged by spatial and temporal variation in transmission dynamics. We developed a mechanistic model that connects sea...

2018-03-27

Yanyu Xiao, Russell Greiner, Mark A. Lewis

In the work, we evaluate the performance of machine learning approaches for predicting successful eradication of aquatic invasive species (AIS) and assess the extent to which eradication of an invasive species depends on the certain specified ecological features of the target ecosystem...

2014-01-01

Alex Potapov, Ulrike E. Schlagel, Mark A. Lewis

We use an evolutionary approach to find “most appropriate” dispersal models for ecological applications. From a random walk with locally or nonlocally defined transition probabilities we derive a family of diffusion equations. We assume a monotonic dependence of its diffusion coefficient on...