Ep. 541 - Coexistence & Maintaining Species Boundaries

In Defense of Plants Podcast

In Defense of Plants

Science & Medicine, Natural Sciences

4.8 • 1.2K Ratings

🗓️ 31 August 2025

⏱️ 49 minutes

🔗️ Recording | iTunes | RSS

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Summary

How are species boundaries maintained when groups of related plant species live near each other? Considering all the things that need to go right for a plant to survive and reproduce, this is not an easy question to answer. Luckily, the genus Lobelia offers multiple opportunities to explore concepts related to plant coexistence and evolution and that is exactly why Dr. Andrea Case is drawn to this genus. Join us for a fascinating discussion about species coexistence and the maintenance of species boundaries in a wild system. This episode was produced in part by Yellowroot, Wisewren, Nadia, Heidi, Blake, Josh, Laure, R.J., Carly, Lucia, Dana, Sarah, Lauren, Strych Mind, Linda, Sylvan, Austin, Sarah, Ethan, Elle, Steve, Cassie, Chuck, Aaron, Gillian, Abi, Rich, Shad, Maddie, Owen, Linda, Alana, Sigma, Max, Richard, Maia, Rens, David, Robert, Thomas, Valerie, Joan, Mohsin Kazmi Photography, Cathy, Simon, Nick, Paul, Charis, EJ, Laura, Sung, NOK, Stephen, Heidi, Kristin, Luke, Sea, Shannon, Thomas, Will, Jamie, Waverly, Brent, Tanner, Rick, Kazys, Dorothy, Katherine, Emily, Theo, Nichole, Paul, Karen, Randi, Caelan, Tom, Don, Susan, Corbin, Keena, Robin, Peter, Whitney, Kenned, Margaret, Daniel, Karen, David, Earl, Jocelyn, Gary, Krysta, Elizabeth, Southern California Carnivorous Plant Enthusiasts, Pattypollinators, Peter, Judson, Ella, Alex, Dan, Pamela, Peter, Andrea, Nathan, Karyn, Michelle, Jillian, Chellie, Linda, Laura, Miz Holly, Christie, Carlos, Paleo Fern, Levi, Sylvia, Lanny, Ben, Lily, Craig, Sarah, Lor, Monika, Brandon, Jeremy, Suzanne, Kristina, Christine, Silas, Michael, Aristia, Felicidad, Lauren, Danielle, Allie, Jeffrey, Amanda, Tommy, Marcel, C Leigh, Karma, Shelby, Christopher, Alvin, Arek, Chellie, Dani, Paul, Dani, Tara, Elly, Colleen, Natalie, Nathan, Ario, Laura, Cari, Margaret, Mary, Connor, Nathan, Jan, Jerome, Brian, Azomonas, Ellie, University Greens, Joseph, Melody, Patricia, Matthew, Garrett, John, Ashley, Cathrine, Melvin, OrangeJulian, Porter, Jules, Griff, Joan, Megan, Marabeth, Les, Ali, Southside Plants, Keiko, Robert, Bryce, Wilma, Amanda, Helen, Mikey, Michelle, German, Joerg, Cathy, Tate, Steve, Kae, Carole, Mr. Keith Santner, Lynn, Aaron, Sara, Kenned, Brett, Jocelyn, Ethan, Sheryl, Runaway Goldfish, Ryan, Chris, Alana, Rachel, Joanna, Lori, Paul, Griff, Matthew, Bobby, Vaibhav, Steven, Joseph, Brandon, Liam, Hall, Jared, Brandon, Christina, Carly, Kazys, Stephen, Katherine, Manny, doeg, Daniel, Tim, Philip, Tim, Lisa, Brodie, Bendix, Irene, holly, Sara, and Margie.

Transcript

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0:00.0	Hey everyone. Did you know that there is an entirely separate In Defensive Plants podcast,
0:03.5	and it's all about the trials and tribulations of gardening. The wonderful Sarah Johnson and I
0:08.2	are exploring a great series that really gets to the highs and lows of our gardening experience,
0:13.1	learning how to garden in new climates, and even doing a little bit of indoor stuff from house
0:17.1	plants to aquarium plants. It's a lot of fun. People are absolutely loving it,
0:21.0	but the only way you can get access to this podcast is to become a patron over at patreon.com slash indefensive plants. In return for getting access to the show, you are helping keep this podcast up and running because conversations like you're about to hear can't happen unless you support the show. So come join the conversation with us today. Once again, that's patreon.com slash in defense of plants.
0:19.7	Now on with the show. So come join the conversation with us today. Once again,
0:37.7	that's patreon.com slash indefensive plants. Now on with the show. Hello everyone and welcome to
0:44.4	the In defensive plants podcast, the official podcast of Indefensiveplants.com. What's up? This is your
0:48.9	host, Matt. Welcome to the show. How is everyone doing this week? Have you ever been hiking, botanizing,
0:53.9	looking at a bunch of closely related plant species
0:56.0	and wondered, hey, why are there so many species closely related living in my area?
1:00.4	Why aren't they all just hybridizing, blending in together instead of maintaining these unique
1:04.5	species boundaries?
1:06.2	Those are the kinds of questions that drive Dr. Andrea Case's research.
1:10.3	And she's applying all of these ideas to the world of Eastern North America's
1:14.4	Lobelias.
1:15.6	This is a really complex subject and not necessarily the easiest thing to study, but the
1:19.8	fascinating insights they're gaining are well worth all of the effort.
1:23.0	I don't want to steal any more of her thunder, so let's just jump right into it.
1:26.0	Without further ado, here's my conversation with Dr. Andrea Case. I hope you enjoy. All right, Dr. Andrea Case, welcome to the podcast. I can't wait to pick your brain today. But first,
1:49.5	let's start off with an introduction. Tell everyone a little bit about who you are and what it is you do.
	...

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