<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">tundras</topic></authority><related type="narrower"><topic>[tundras by biome]</topic></related><related type="other"><topic>tundra biomes</topic></related><related type="broader"><topic>plant communities</topic></related><variant type="other"><topic>tundra</topic></variant> <note xml:lang="en"><![CDATA[ Areas of treeless, rolling terrain found in polar or alpine regions, typically covered with bare ground, rock, or such vegetation as mosses, lichens, and small shrubs. ]]></note></mads>