Life in the City – Humans alter city habitats for plants and animals

Cites are ecosystems, just like a forest, desert, and prairie are ecosystems. As human populations grow and move to urban areas, cities expand into other ecosystems. Plants and animals must adjust to the rapid changes that result. Humans are the biggest threat to organisms, but why are cities challenging environments for plants and animals? Let’s learn more about one of the largest and growing ecosystems on land… cities!

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In Winter: Where the Cold-Blooded Wild Things Go

When days become shorter and the temperature outside begins to drop, our home interiors become warm, welcoming refuges from the rain and snow outside. We see the trees enter dormancy as they drop their leaves, and wildlife become busy preparing for winter: Many birds migrate, some mammals prepare to hibernate, but where do the smooth and scaly things go? The frogs? The snakes? The turtles? And without a fur coat and thick layer of blubber, it makes one wonder how they survive in prolonged freezing temperatures. As it turns out, behavioral and physiological adaptations – such as brumation and supercooling – allow many amphibians and reptiles to withstand some of our planet’s most extreme winter conditions.

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