A5065858969- Aquatic Invertebrate Ecology and Behavior
- Fish Ecology and Management Studies
- Evolutionary Game Theory and Cooperation
- Marine Bivalve and Aquaculture Studies
- Ecosystem dynamics and resilience
- Mathematical and Theoretical Epidemiology and Ecology Models
- Animal Ecology and Behavior Studies
- COVID-19 epidemiological studies
- Mollusks and Parasites Studies
- Land Use and Ecosystem Services
- Opinion Dynamics and Social Influence
- Plant and animal studies
- Marine and coastal plant biology
- Ecology and biodiversity studies
- Hydrology and Sediment Transport Processes
- Environmental Conservation and Management
- Coastal wetland ecosystem dynamics
- Parasite Biology and Host Interactions
- COVID-19 and Mental Health
- Urban, Neighborhood, and Segregation Studies
- Food Security and Health in Diverse Populations
- Sustainability and Climate Change Governance
- Marine and coastal ecosystems
- Climate Change Policy and Economics
- Soil and Water Nutrient Dynamics
University of Maryland, College Park
2023-2025
University of Kansas
2023-2025
University of California, Davis
2015-2023
University of Guelph
2020-2022
Buffalo State University
2021
University of California System
2019
Cornell University
2013-2015
University at Buffalo, State University of New York
2011-2012
Abstract Declines in animal body sizes are widely reported and likely impact ecological interactions ecosystem services. For harvested species subject to multiple stressors, limited understanding of the causes consequences size declines impedes prediction, prevention, mitigation. We highlight widespread Pacific salmon based on 60 years measurements from 12.5 million fish across Alaska, last largely pristine North American salmon-producing region. size, primarily resulting shifting age...
In the late stages of an epidemic, infections are often sporadic and geographically distributed. Spatially structured stochastic models can capture these important features disease dynamics, thereby allowing a broader exploration interventions. Here we develop model severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) transmission among interconnected group population centers representing counties, municipalities, districts (collectively, "counties"). The is parameterized with...
Cross-ecosystem subsidies are critical to ecosystem structure and function, especially in recipient ecosystems where they the primary source of organic matter food web. Subsidies indicative processes connecting can couple ecological dynamics across system boundaries. However, degree which such flows induce cross-ecosystem cascades spatial synchrony, tendency for fluctuations be correlated locations, is not well understood. Synchrony has destabilizing effects on ecosystems, adding importance...
Abstract Aim Geographic patterns of species distributions and the factors contributing to endangerment are necessary for development integrative conservation strategies. Freshwater mussels Unionidae have among highest levels imperilment recorded in North America. This paper describes biogeography diversity along climate habitat gradients Texas, evaluates human impact, identifies hot spots endemism that should be targeted conservation. Location Methods Unionids were surveyed all major Texas...
In this study, for the first time, using similar methods, we compared population density and distribution across different substrate types of Limnoperna fortunei Dreissena polymorpha, as well their impacts on composition benthic communities. Data L. were obtained in Rio Tercero Reservoir, Argentina, whereas studies D. polymorpha conducted North America Europe. We found that, to zebra mussel, creates high densities hard substrates littoral zone, avoids soft profundal zone; however, overall a...
Abstract The impacts of species invasions can subside over time as ecosystems ‘adapt’ and invaders decline or increase additional invade. character timescales invasion provide important insights into ecosystem dynamics management. Yet long-term studies remain rare often confound invasive with coincident environmental change. One way to address this challenge is ask: what ecological changes since are recapitulated in that span a range conditions, located different regions, were invaded...
Abstract Invaders can have devastating impacts on freshwater ecosystems, but these subside over time as ecosystems “adapt” to the invasion of new species. We analyzed changes in species composition and density molluscs Oneida Lake (New York, USA), one best studied North American lakes based detailed surveys conducted 1915–17, 1967–68, 1992–95, 2012, 2022–23, annual benthic from 2009 through 2023. Eutrophication habitat alteration after 1920 resulted a 25% decline richness 95% native...
Abstract Lake stratification produces sharp gradients in temperature and pelagic resources which have cascading effects on the traits of aquatic populations, including invasive species their ecosystem impacts. We study consequences such common environmental demography quagga mussels, one world's most aggressive species. Coupling a series situ experiments with biophysical model community, we quantify mussel growth recruitment littoral vs. profundal benthic habitats eastern Erie. found that...
One of the most significant ecological and economic impacts exotic species is associated with their role as vectors for introduction parasites into invaded areas. Exotic may have devastating on ecosystems; moreover, invaders also become hosts aboriginal parasites, promoting native diseases that otherwise would not emerged. During 2009 2010, molluscs were collected from 27 sites in Lower Great Lakes tributaries, Finger Lakes, Lake Oneida. Seven examined presence trematodes, including zebra...
Simulation models from the early COVID-19 pandemic highlighted urgency of applying non-pharmaceutical interventions (NPIs), but had limited empirical data. Here we use data 2020-2021 to retrospectively model impact NPIs in Ontario, Canada. Our represents age groups and census divisions is parameterized with epidemiological, testing, demographic, travel, mobility The captures how individuals adopt response reported cases. We compare a scenario representing introduced within Ontario (closures...
AbstractAlternative stable ecosystem states are possible under the same environmental conditions in models of two or three interacting species and an array feedback loops. However, multispecies food webs might weaken feedbacks loops that can create alternative states. To test how this potential depends on web properties, we develop a many-species model where consumer Allee effects emerge from consumer-resource interactions. We evaluate interactive connectance, interspecific trait diversity,...
Changes in nutrient loading and invasive species are among the strongest human-driven disturbances freshwater ecosystems, but our knowledge on how they affect biodiversity of lakes is still limited. We conducted a detailed historical analysis mollusc community Oneida Lake based comprehensive lakewide study 2012 previous surveys dating back to 1915. In early 20th century, lake had high water clarity, with abundant macrophytes benthic algae, hosted most diverse molluscan New York State,...
Abstract New graduate students in biology programs may lack the quantitative skills necessary for their research and professional careers. The acquisition of these be impeded by teaching mentoring experiences that decrease rather than increase students’ beliefs ability to learn apply approaches. In this opinion piece, we argue revising instructional ensure both student confidence are enhanced improve educational outcomes success. A few studies suggest explicitly addressing productive failure...
Abstract Whether ecosystems recover from disturbance depends on the presence of alternative stable states, which are theoretically possible in simple models many systems. However, definitive empirical evidence for this phenomenon remains limited to demographically closed such as lakes. In more interconnected systems temperate rocky reefs, local relevance states might erode immigration overwhelms feedbacks and produces a single state. At larger spatial scales, dispersal counter localized...
Induced changes in the demographic traits of harvested populations produce ecological responses to mortality that are not generally predicted by traditional models. Strong plasticity maturation rates—commonly observed among intensely populations—varies time between birth and reproduction an individual, thereby affecting a population's growth rate. We developed general model explore how density‐dependent rates affect both population persistence overcompensation, situation which abundance...
Abstract Quagga mussels have expanded their range across the northern hemisphere in recent decades owing to dispersal abilities, prolific reproduction rates, and broad ecological tolerances. Their remarkable capacity filter particulates from water column has had profound effects on inland aquatic ecosystems. In North American Great Lakes, quagga mussel populations increased inexorably since late 1980’s, but it remains unclear whether will follow a similar trajectory Europe where they...