Divergence of vocal culture among isolated alpine habitats is inconsistent among three Oscine species

Sky Islands Are a Global Tool for Predicting the Ecological and Evolutionary Consequences of Climate Change

“…Long-term geographic isolation on SIs generally results in dispersal limitation or the inability to migrate between or among SIs. For example, 62% of SI studies report isolation-driven dispersal limitation in the observed populations, with a few studies explicitly using the terminology of isolation-by-distance (IBD) (Dalisio et al 2015, Robin et al 2015, Weston & Robertson 2015 or isolation-by-environment (Lonsinger et al 2015, Manthey & Moyle 2015 to describe isolation driven by geographic distance or as a product of environmental dissimilarity, respectively. Broadly, the isolating nature of SIs was supported across the reviewed literature; only 8% of the studies reported connectivity between populations, and 87% of these cases showed connectivity between populations of highly mobile organisms, such as insects (Hill & Unckless 2021).…”

Variation in the ecstatic display call of the Gentoo Penguin (Pygoscelis papua) across regional geographic scales

“…In a noisy environment, vocal distinctiveness allows mates to recognize each other within a breeding season as well as across seasons (e.g., Aubin and Jouventin 1998, Leader et al 2002, Tibbetts and Dale 2007 and allows individuals to communicate information such as fitness (de Kort et al 2009) and relatedness (McDonald and Wright 2011). Variation in vocal traits may be associated with geographic isolation (e.g., Wright 1996, Dalisio et al 2015, Shizuka et al 2016, speciation (Mulard et al 2009, Pieplow and Francis 2011, Greig and Webster 2013, and range shifting (Xing et al 2013), and can even occur over short time scales in response to anthropogenic noise (Rheindt 2003, Villain et al 2016.…”