What primary functions do the extensive burrow systems dug by *Arvicola amphibius* fulfill?
Answer
Secure, dry resting spots and nesting sites
Water voles excavate complex burrow systems directly into the banks of their aquatic habitats. These elaborate underground networks serve multiple vital purposes essential for the species' survival and reproduction. The primary functions of these dugouts are to provide secure locations that remain dry, offering a safe retreat from aquatic predators and adverse weather. Furthermore, these burrows house the nesting sites where the young voles are born and raised, cementing their role as the central hub of the vole's terrestrial life.

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