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Tank bromeliads: Water conservation

Some bromeliads, like the plant in front of you, have developed a sophisticated strategy to secure the water and nutrients they need to survive in the rain forest canopy. The leave of their rosettes overlap so tightly at their base that they form a watertight funnel that acts as a cistern. In some bromeliads, this tank can hold as much as 10 liters of water! From measurements taken in the Colombian rain forest, it has been calculated that tank bromeliads can hold up to fifty thousand liters of water per hectare of forest canopy. That’s fifty tons of water weighing on the branches of rain forest trees from tank bromeliads alone.

But these tanks aren’t just for storing water. If you’d like to know more, press number 302.



Audio file download
Tank bromeliads: Water conservation (MP3, 358 KB)

Audio production and copyright: Soundgarden Audioguidance GmbH
Text: Andreas Gröger, Botanischer Garten München-Nymphenburg