Jeremy Summers

Jul 11, 2024 | onlinelibrary.wiley.com | Xuewen Geng |Jeremy Summers |Nancy Chen

1 INTRODUCTION Hybridization is widely observed among related species, and the areas where lineages overlap (hybrid zones) offer a unique opportunity to investigate the role of ecology in speciation (Abbott et al., 2013; Barton & Hewitt, 1985). In many cases, there is a balance between selection and gene flow within a hybrid zone, resulting in a stable hybrid zone over time (Barton, 1979; Moore, 1977).

Jan 11, 2024 | biorxiv.org | Jeremy Summers |Elissa J. Cosgrove |Reed Bowman |John Fitzpatrick

AbstractIsolation caused by anthropogenic habitat fragmentation and degradation can destabilize populations. Population demography is shaped by complex interactions among local vital rates, environmental fluctuations, and changing immigration rates. Empirical studies of these interactions are critical for testing theoretical expectations of how populations respond to isolation.

Dec 15, 2023 | biorxiv.org | Xuewen Geng |Jeremy Summers |Nancy Chen

AbstractHybrid zones occur in nature when populations with limited reproductive barriers overlap in space. Many hybrid zones persist over time, and different models have been proposed to explain how selection can maintain hybrid zone stability. More empirical studies are needed to elucidate the role of ecological adaptation in maintaining stable hybrid zones.