Why are there SO MANY Salamanders in Appalachia?

From Atlas Pro.

Reflecting on my recent trip into the heart of the Appalachians, I can’t help but wondering why there are more salamanders here than anywhere else in the world

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Sources / further reading

Amphibians

https://www.jstor.org/stable/1443655

https://www.smithsonianmag.com/smithsonian-institution/the-surprisingly-colorful-salamanders-of-appalachia-813148/

Hunting for Salamanders in the southern Appalachians

Salamander Diversity of the Southern Appalachians

How the Mountains got their Jewels: The Evolution of Salamanders in the Appalachian Mountains.

https://www.ncwildlife.org/Portals/0/Learning/documents/Pisgah/Common-Salamanders-of-Western-NC.pdf

Red Salamander

https://digital.tnconservationist.org/publication/?m=58294&i=564495&view=articleBrowser&article_id=3295357&ver=html5

Biodiversity of Highlands

https://tnaqua.org/riverwatch/why-is-southern-appalachia-so-salamander-friendly/

Studying Salamanders in Southern Appalachia

Salamander poster Appalachia Second edn

Essential ubiquity: How one tiny salamander species has a huge impact

https://www.srs.fs.usda.gov/pubs/ja/ja_pough001.pdf

https://www.fs.usda.gov/research/treesearch/47190

https://www.researchgate.net/figure/Map-of-the-salamanders-species-distribution-in-the-EU-data-source-IUCN-Red-List_fig1_324840024

https://salamandersofchina.myspecies.info/

https://www.zsl.org/news-and-events/news/critically-endangered-chinese-giant-salamander-revealed-be-multiple-species

https://academic.oup.com/evolinnean/article/3/1/kzae007/7690816

https://www.researchgate.net/figure/Smoothed-elevation-map-of-the-southern-Appalachian-region-with-the-stations-considered_fig2_259328610