Abstract Detail


Turck, Daniel [1], Grossfurthner, Lukas P. [2], Sullivan, Jack [1], Tank, David [3].

From the coast to the mountains: extending phylogeographic analyses of coastal disjuncts in the Pacific Northwest to the alpine species Larix lyalii (Pinaceae).

The disjunct mesic forests of the Pacific Northwest occurring on the west side of North America’s coastal ranges as well as in the northern Rocky Mountains have emerged as a model system for comparative phylogeography. Less well-known are the alpine and subalpine plants that mirror this distribution – here referred to as the Maritime Alpine Disjuncts. The phylogeographic histories of lowland costal disjunct species are the result of either the Cascade orogeny separating once contiguous mesic habitat, post-Pleistocene dispersal of species between the northern Rocky Mountains and coastal forests, or a complex mix of these two processes. In the current study, our motivation is to investigate the phylogeographic history of Larix lyalii (subalpine larch) – a narrowly distributed Maritime Alpine Disjunct species – determining whether these geographically related disjunct communities are the result of similar processes. Here we sample the entire range of L. lyalii and use ddRAD data to explore hypotheses on the timing of these disjunctions and locations of putative Pleistocene refugia using a combination of species distribution and demographic modeling approaches.

1 - University of Idaho, Department of Biological Sciences, 875 Perimeter Drive MS 3051, Moscow, Idaho, 83844, United States
2 - University Of Idaho, Bioinformatics And Comptl. Biol, 875 Perimeter Drive,MS 3051, University Of Idaho, Moscow, ID, 83844, United States
3 - University of Wyoming, Botany, Department of Botany, 3165, Aven Nelson Room 114, 1000 E. University Ave, Laramie, WY, 82071, USA

subalpine larch
Larix lyallii
demographic modeling
Species Distribution Modeling.

Presentation Type: Oral Paper
Number: BIOG II005
Abstract ID:718
Candidate for Awards:None

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