Projects per year
Personal profile
Research Expertise
I am a quantitative ecologist with an interest in modelling biogeographic patterns of species and communities across space and time. I often use hierarchical Bayesian models and mechanistic simulations, with a particular interest in addressing the role that stochasticity and uncertainty play in our ability to predict community dynamics and responses to anthropogenic influences. My past work has included insects, mammals, and invasive plants, often in montane environments.
At SAMS, my research includes modelling sea lice dispersal dynamics using biophysical models to evaluate the potential impact of off-shore aquaculture sites, incorporating biological dynamics into short-term forecasts of harmful algal bloom risk, and building models of kelp population dynamics to identify promising areas for kelp aquaculture and to evaluate the sustainability of different harvesting regimes in the UK and South America.
Visit my software developers' GitHub pages
Research Interests
Bayesian modelling; climate change; population ecology; community ecology; biodiversity; simulations
Education/Academic qualification
Doctor of Science, University of Colorado
1 Sept 2011 → 31 May 2017
Award Date: 12 May 2017
Bachelor of Science, University of Notre Dame
1 Sept 2005 → 17 May 2009
Award Date: 17 May 2009
External positions
Postdoctoral Researcher, University of Lausanne
1 Jun 2019 → 31 May 2021
Postdoctoral Researcher, University of New Hampshire
1 Jun 2017 → 31 May 2019
Expertise related to UN Sustainable Development Goals
In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This person’s work contributes towards the following SDG(s):
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SDG 13 Climate Action
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SDG 14 Life Below Water
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SDG 15 Life on Land
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Collaborations from the last five years
Projects
- 1 Active
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COAST-SCAPES: Rethinking Coastal Landscapes with Climate-Resilient Interventions: Systemic Land-to-Sea Solutions
Billing, S.-L. (CoI), Aleynik, D. (PI), Szewczyk, T. (CoI), Last, K. (CoI) & Dale, A. (CoI)
1/09/25 → 31/08/29
Project: Research
Research output
- 14 Article
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Embracing uncertainty: Ensemble models of sea lice larval dispersal
Szewczyk, T. M., Aleynik, D., Reinardy, H. C., Last, K. S. & Dale, A. C., 1 Sept 2026, In: Ecological Modelling. 519, 111651.Research output: Contribution to journal › Article › peer-review
Open AccessFile2 Citations (Scopus)5 Downloads (Pure) -
Towards robust predictions of salmon lice infestation pressure in Scottish Lochs: Developing a multi-biophysical model ensemble
Moriarty, M., Garnier, S., Adams, T. P., Gillibrand, P. A., Brain, S., Murray, R. O., Szewczyk, T. M., Gallego, A. & Murray, A. G., 2 Jul 2026, In: Ecological Modelling. 521, 12 p., 111824.Research output: Contribution to journal › Article › peer-review
Open AccessFile3 Downloads (Pure) -
Towards robust predictions of salmon lice infestation pressure in Scottish Lochs: Biophysical model parameter sensitivity testing
Moriarty, M., Adams, T. P., Gillibrand, P., Brain, S., Garnier, S., O'hara Murray, R. B., Szewczyk, T. M., Murray, A. G. & Gallego, A., 2 Jul 2026, In: Ecological Modelling. 521, 11 p., 111723.Research output: Contribution to journal › Article › peer-review
1 Citation (Scopus) -
Ensemble models improve near-term forecasts of harmful algal bloom and biotoxin risk
Szewczyk, T. M., Aleynik, D. & Davidson, K., 1 Feb 2025, In: Harmful Algae. 142, 13 p., 102781.Research output: Contribution to journal › Article › peer-review
Open AccessFile15 Citations (Scopus)289 Downloads (Pure) -
Interactive effects of multiple stressors with significant wave height exposure on farmed Atlantic salmon (Salmo salar) welfare along an inshore-offshore gradient
Szewczyk, T. M., Morro, B., Díaz-Gil, C., Gillibrand, P. A., Hardwick, J. P., Davidson, K., Aleynik, D. & Rey Planellas, S., 30 Jan 2024, In: Aquaculture. 579, 11 p., 740184.Research output: Contribution to journal › Article › peer-review
Open AccessFile7 Citations (Scopus)296 Downloads (Pure) -
Mechanistic simulations of kelp populations in a dynamic landscape of light, temperature, and winter storms
Szewczyk, T. M., Moore, P., Smale, D. A., Burrows, M. & Adams, T., 28 Feb 2024, In: Ecological Modelling. 488, 11 p., 110590.Research output: Contribution to journal › Article › peer-review
Open AccessFile2 Citations (Scopus)175 Downloads (Pure) -
Circadian rhythm of preferred temperature in fish: Behavioural thermoregulation linked to daily photocycles in zebrafish and Nile tilapia
Vera, L. M., de Alba, G., Santos, S., Szewczyk, T. M., Mackenzie, S. A., Sanchez-Vazquez, F. J. & Rey-Planellas, S., 23 Mar 2023, In: Journal of Thermal Biology. 113, 10 p., 103544.Research output: Contribution to journal › Article › peer-review
Open AccessFile36 Citations (Scopus)203 Downloads (Pure)
Press/Media
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Talking about a revolution
Last, K., Dale, A., Reinardy, H. & Szewczyk, T. M.
13/02/26
1 item of Media coverage
Press/Media: Research