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Abstract Detail


Zenzen, Ashley [1], Grusz, Amanda [2].

A historical niche modeling approach to inferring hybridization in Woodsia scopulina.

In North America, many plants exhibit discontinuous (i.e. disjunct) species distributions. For example, species that are native to the Great Lakes region may also be prevalent in distant areas, such as along the eastern edge of the continent. Many factors shape such disjunct distributions, especially historical climate and geological events. In the Great Lakes region, glaciation is among the most recent and most impactful contributors to the modern landscape. In this study, we used historical climate layers inferred from the last glacial maximum (LGM, ca. 21,000 years ago) to model the historical distribution of extant species belonging to the Woodsia scopulina complex (W. scopulina subsp. scopulina, W. scopulina subsp. appalachiana, and their putative hybrid, W. scopulina subsp. laurentiana; Woodsiaceae). Specifically, we explore whether the now disjunct presumed parents of the Laurentian Shield hybrid—western North American subsp. scopulina and eastern North American subsp. appalachiana—may have co-occurred in the past. Our findings demonstrate the utility of niche modeling for inferring historical origins of hybrid taxa.

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1 - University Of Minnesota Duluth, Department Of Biology, 1035 Kirby Drive Swenson, Duluth, MN, 55812, United States
2 - University Of Minnesota Duluth, Biology, 1035 Kirby Drive, SSB 207, Duluth, MN, 55812, United States

Niche Modeling
Pteridophytes .

Presentation Type: Oral Paper
Session: PTER2, Pteridology II
Location: San Pedro 1/Starr Pass
Date: Monday, July 29th, 2019
Time: 2:15 PM
Number: PTER2004
Abstract ID:1010
Candidate for Awards:Edgar T. Wherry award

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