Outdoors just for kids: Why sagebrush suck and blow

2014-06-19T00:00:00Z Outdoors just for kids: Why sagebrush suck and blow The Billings Gazette

When you drink a soda with a straw, do you ever blow back through the straw and make a bunch of bubbles?

That’s a simple way to understand the complex system used by some plants, like sagebrush, to survive through wet and dry periods.

Sagebrush have a main root, called a taproot, that extends deep into the ground. They also have other roots spread out closer to the soil’s surface, called lateral roots. When the ground is wet in the spring, the lateral roots may get overwhelmed with water, so they “blow” water back down the taproot. In the middle of the summer when the weather is really dry, the lateral roots “suck” that springtime moisture back up from the taproot where it’s been stored. This helps keep the sagebrush leaves alive.

This circulation of water in plants is called hydraulic redistribution or hydraulic lift, although the water isn’t just lifted, it can move in any direction.

Such an adaptation has helped plants like sagebrush survive in what can be very dry areas. The tiny plant roots near the surface of the soil will even “sweat” water into the dirt to keep tiny microorganisms alive. Microorganisms are so small that some are only a single cell, yet they are necessary for a number of things, including providing food like nitrogen to plants.

Think about that the next time you walk through a field of fragrant sagebrush, but you won’t hear the plants making a noisy sucking sound like you do sucking through a straw when your drink is all gone.

— Brett French,

Gazette Outdoors editor

Copyright 2015 The Billings Gazette. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

More from the Gazette

Outdoors just for kids: Why don’t snakes have legs?

Outdoors just for kids: Why don’t snakes have legs?

January 29, 2015 12:00 amLoading…
Outdoors just for kids: Crocs are close cousins of birds

Outdoors just for kids: Crocs are close cousins of birds

January 08, 2015 12:00 amLoading…
Outdoors just for kids: Rare buck deer have fangs

Outdoors just for kids: Rare buck deer have fangs

November 20, 2014 12:00 amLoading…
Outdoors just for kids: Snakey fish can live out of water

Outdoors just for kids: Snakey fish can live out of water

September 04, 2014 12:00 amLoading…

Contributors

Brett French

Outdoors editor for the Billings Gazette.

Outdoors Just for Kids e-book

Outdoors Just for Kids e-book

A collection of Just for Kids stories and illustrations by Brett French and John Potter.

All the news from the outdoors scene, delivered to your email inbox daily.