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Models in population ecology Strategic models Unapologetic - PowerPoint PPT Presentation

Sep 17, 2022 •139 likes •219 views

Models in population ecology Strategic models Unapologetic caricatures (i.e., over simplifications) Used to develop intuition, explore the logical consequences of assumptions, generate testable predictions Tactical

  1. Models in population ecology • “Strategic” models • Unapologetic caricatures (i.e., over ‐ simplifications) • Used to develop intuition, explore the logical consequences of assumptions, generate testable predictions • “Tactical” models • Tailored to a specific system • Used to make forecasts or guide management • Used to make forecasts or guide management • Models can also be vehicles for competing alternative hypotheses against one another with data ( The Ecological Detective , 1997, Ray Hilborn & Marc Mangel)

  3. It’s a rough world out there. Photo credits: eoearth.org, cornell.edu, ncse.com .

  4. Whither positive interactions? Photo credits: flickr.com, RR Dunn, B Guenard.

  5. Species may simultaneously compete with and facilitate one another another. Figure from Hunter & Aarsen, “Plants helping plants”, BioScience 1988.

  6. Photo credit www.ncports.com Photo credit www2 bishopmuseum org Photo credit www2.bishopmuseum.org Photo credit www.seaweed.ie Hay, American Naturalist 1986.

  7. Colwell, Biotropica 1995

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