Alaska Stickleback Restoration Project

Alaska Stickleback Restoration ProjectAlaska Stickleback Restoration ProjectAlaska Stickleback Restoration Project

Alaska Stickleback Restoration Project

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Aquatic ecology axis

Current ecosystem impact assessment and restoration practices are based on ecology, and they do not integrate evolutionary principles for understanding the interplay between ecology and evolution that could be important for the outcome of ecosystem restoration projects in nature. We are quantifying the extent to which evolutionary processes impact lake ecology during ecosystem restoration by evaluating the effects of evolutionarily divergent fish introductions on aquatic biodiversity, lake ecosystem processes, and the predictability of subsequent phenotypic evolution and its effects on ecological differences. We will evaluate what ecological differences are most important for determining selection pressures on stickleback phenotypic evolution over several generations, and the subsequent influence of evolution-mediated differences in lake ecology on stickleback traits.


Projects

Methods

We apply paleolimnological approaches, classic and emerging tools in community ecology, such as environmental DNA (eDNA) metabarcoding, food web ecology (stable isotopes and fatty acids), as well as measures of ecosystem function. We are interested in following temporal patterns in the experimental lakes, as well as conducting manipulative enclosure experiments to disentangle specific ecological mechanisms. We collaborate closely with other teams on the project to determine the extent to which lake properties determine stickleback phenotypic evolution, and how much stickleback phenotypic evolution feeds back on lake ecology. 

Preliminary results

The figure to the right shows divergent responses of zooplankton communities to evolutionary divergent stickleback additions. Before stickleback introductions, both large and small recipient lakes had similar crustacean zooplankton communities. With limnetic stickleback introductions, zooplankton assemblages became dominated by small-bodied taxa and were less speciose, whereas benthic stickleback introductions resulted in more variable communities. 

People

Alison Derry

Irene Gregory-Eaves

Irene Gregory-Eaves

Principal Investigator & Axis leader

L'Université du Québec à Montréal (UQAM), Canada

2018 - present

Website

Irene Gregory-Eaves

Irene Gregory-Eaves

Irene Gregory-Eaves

Principal Investigator & Axis Leader

McGill University, Canada

2023 - present

Website

Andrew Hendry

Irene Gregory-Eaves

Blake Matthews

Principal Investigator & Axis leader

McGill University, Canada

2018 - present

Website

Blake Matthews

Irene Gregory-Eaves

Blake Matthews

Collaborator

Swiss Federal Institute of Aquatic Science and Technology (EAWAG), Switzerland

2019 - present

Website

Celia Symons

Zoë Rabinovitch

Zoë Rabinovitch

Collaborator

University of California Irvine, USA

2023 - present

Website

Zoë Rabinovitch

Zoë Rabinovitch

Zoë Rabinovitch

MSc student

L'Université du Québec à Montréal (UQAM),  Canada

2023 - present

Jennifer Fisher

Zoë Rabinovitch

Jennifer Fisher

PhD student

L'Université du Québec à Montréal (UQAM),  Canada

2024 - present

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