Urban Design For Environmental Protection, Spring/Summer 2001, Issue 4,
2019
University of Louisville
Urban Design For Environmental Protection, Spring/Summer 2001, Issue 4
Sustain Magazine
No abstract provided.
Stream Restoration, Spring/Summer 2011, Issue 24,
2019
University of Louisville
Stream Restoration, Spring/Summer 2011, Issue 24
Sustain Magazine
No abstract provided.
Renewable Energy, Fall/Winter 2011, Issue 23,
2019
University of Louisville
Biodiversity, Fall/Winter 2012, Issue 25,
2019
University of Louisville
Active Transportation, Spring/Summer 2012, Issue 26,
2019
University of Louisville
Active Transportation, Spring/Summer 2012, Issue 26
Sustain Magazine
No abstract provided.
Heat Islands, Fall/Winter 2014, Issue 29,
2019
University of Louisville
Sustainable Behavior, Spring/Summer 2013, Issue 28,
2019
University of Louisville
Sustainable Behavior, Spring/Summer 2013, Issue 28
Sustain Magazine
No abstract provided.
Local Foods, Fall/Winter 2013, Issue 27,
2019
University of Louisville
Campus Sustainability, Spring/Summer 2014, Issue 30,
2019
University of Louisville
Campus Sustainability, Spring/Summer 2014, Issue 30
Sustain Magazine
No abstract provided.
Zero Waste, Spring/Summer 2017, Issue 36,
2019
University of Louisville
Consent Decrees, Fall/Winter 2017, Issue 35,
2019
University of Louisville
Human Ecology, Spring/Summer 2016, Issue 34,
2019
University of Louisville
Citizen Science, Fall/Winter 2016, Issue 33,
2019
University of Louisville
Urban Streams, Spring/Summer 2015, Issue 32,
2019
University of Louisville
Unconventional Energy, Fall/Winter 2015, Issue 31,
2019
University of Louisville
Unconventional Energy, Fall/Winter 2015, Issue 31
Sustain Magazine
No abstract provided.
Carbon Neutral, Spring/Summer 2018, Issue 38,
2019
University of Louisville
Political Will, Fall/Winter 2018, Issue 37,
2019
University of Louisville
Nonlinear Reaction–Diffusion Process Models Improve Inference For Population Dynamics,
2019
Colorado State University, Fort Collins
Nonlinear Reaction–Diffusion Process Models Improve Inference For Population Dynamics, Xinyi Lu, Perry J. Williams, Mevin B. Hooten, James A. Powell, Jamie N. Womble, Michael R. Bower
United States National Park Service: Publications
Partial differential equations (PDEs) are a useful tool for modeling spatiotemporal dynamics of ecological processes. However, as an ecological process evolves, we need statistical models that can adapt to changing dynamics as new data are collected. We developed a model that combines an ecological diffusion equation and logistic growth to characterize colonization processes of a population that establishes long-term equilibrium over a heterogeneous environment. We also developed a homogenization strategy to statistically upscale the PDE for faster computation and adopted a hierarchical framework to accommodate multiple data sources collected at different spatial scales. We highlighted the advantages of using a …
Permafrost Hydrology Drives The Assimilation Of Old Carbon By Stream Food Webs In The Arctic,
2019
National Park Service, Arctic Network
Permafrost Hydrology Drives The Assimilation Of Old Carbon By Stream Food Webs In The Arctic, Jonathan A. O’Donnell, Michael P. Carey, Joshua C. Koch, Xiaomei Xu, Brett A. Poulin, Jennifer Walker, Christian E. Zimmerman
United States National Park Service: Publications
Permafrost thaw in the Arctic is mobilizing old carbon (C) from soils to aquatic ecosystems and the atmosphere. Little is known, however, about the assimilation of old C by aquatic food webs in Arctic watersheds. Here, we used C isotopes (d13C, D14C) to quantify C assimilation by biota across 12 streams in arctic Alaska. Streams spanned watersheds with varying permafrost hydrology, from ice-poor bedrock to ice-rich loess (that is, yedoma). We measured isotopic content of (1) C sources including dissolved organic C (DOC), dissolved inorganic C (DIC), and soil C, and (2) stream biota, including benthic biofilm and macroinvertebrates, and …
Our Envirome, Spring/Summer 2019, Issue 40,
2019
University of Louisville
