Landscapes - People - Global change

Tag: dykes

New paper on the the limits of ecosystem service assumptions

I’m popping my head up at the end of three weeks being locked out by Dalhousie to share news of a new ResNet paper published this morning in Ecosystems and People, Proximity, benefit transfer and trade-offs: the limits of ecosystem service assumptions in an anthropogenic rural coastal setting. I led this one but had a strong support team, including postdocs Lara Cornejo and Brooke McWherter, and Masters students Sam Howard and Alex Legault. I’m so pleased with the big picture insight we were able to glean from our relatively low-effort survey question about ecosystem service benefits from dykes, dykelands and tidal wetlands around the Bay of Fundy. Very few benefits were associated with proximity, especially for dykelands and tidal wetlands. Very different ‘hotspot’ patterns showed the limits of benefit transfer practices even within relatively close and homogenous places. Where hotspots don’t exist, for instance for tidal wetlands, this does not mean there is not benefit flow: benefits may simply be more distributed. This suggests proximity is a poor predictor of stakeholdership. And finally, assumptions of trade-offs in converting between landforms may not play out as expected: we saw many people getting the same benefits from dykes, dykelands and tidal wetlands. In the face of managed dyke realignment that converts some former dykeland back to tidal wetland, it is useful to learn that the very different landforms seem to many to belong together. With some exceptions (e.g., food, safety), this means that trade-offs may not be as significant as might otherwise be assumed, especially in places where multifunctionality is desired and the dyke remains contiguous and accessible for transportation.

Small multiple maps of hotspots and coldspots for various landforms and benefits.

Small multiple maps of hotspots and coldspots for various landforms and benefits (Figure 2 in Sherren et al., 2025, Ecosystems and People).

Congratulations, Ellen!

Ellen Chappell with me after her successful defense Monday, June 17, 2019.

Ellen Chappell with me after her successful defense Monday, June 17, 2019.

Congratulations to Ellen Chappell, who was first in her cohort to defend her MES this past Monday: she set a high bar indeed. The defense was well-timed to come after she presented the work at the Energy Research & Social Science conference at the end of May in Tempe, Arizona, and immediately before a Dal-based Clean Tech Research event. Thanks to committee member John Parkins and examiner Heather Braiden for engaging richly in Ellen’s work, despite calling in, and chair Peter Tyedmers and the sizable and engaged audience for managing to make it an event despite having so few committee members present in the flesh.

Ellen’s work explores the connections people have to landscape features that were created for specific uses, even when those uses fade, and what those kinds of connections mean for new landscape additions, specifically wind turbines. She made the first tests of climax thinking in her Chignecto Isthmus case study, and provided some encouraging results. We’ll be expanding on those results next week, when first-year MES Krysta Sutton and I start running our focus groups with coastal residents around Nova Scotia about climate adaptation options.

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