Do trees in rainforests have seasonal growth rings?

Friday 5th February 2010
Submitted by Guest
Steve Collins, Northampton

Tropical rainforests don’t experience the winter and summer extremes seen in temperate rainforests. Often, tropical trees grow in a similar way all year round, meaning growth rings are not apparent. However, tropical regions do experience seasonal changes, such as rainy versus dry seasons. Some tropical trees, like teak, have obvious growth rings that reflect this. Others have more subtle rings, revealed only by chemical analysis of the wood.
Answered by Yan Wong

How do hubless wheels work?
previous qanda Article
Why are British mains plugs bigger than those in other countries?
next qanda Article
Q&A Tabs

The powder is actually tiny scales made from modified hairs. Moths, like butterflies, belong to the order Lepidoptera, which means 'scale wing'. The scales are pigmented but they also contribute...

By changing the way we perceive the world. For example, in experiments in which people looked at smiley or sad face icons, the music they were listening to affected what they saw. Even a neutral...

Lots of insects hide in burrows and only emerge at night, or use camouflage to avoid detection. But, more than any other group of animals, insects are also masters of the opposite strategy called...

Phlegm is the mucous secretion of the respiratory passages. The cilia cells that line these passages are continually driving the phlegm upward to the throat, where it triggers the swallow reflex...

It depends on how high (or low) you set the bar of fluency. Ziad Fazah, born in Liberia, brought up in Beirut and now living in Brazil, claims to be the world's greatest living polyglot, with...

All female mammals have a clitoris, the sole purpose of which is to react to sexual stimulation, and presumably this stimulation has evolved to be pleasurable for most species. But establishing...

To create a sound, we have to set matter - whether it's a gas like air, a liquid or even a solid material - in regular motion, creating a wave of specific frequencies, which we hear as a sound of...

Mirrors don’t reverse left and right either – that’s just our interpretation of what happens. Your reflection in the mirror is actually reversed front to back – if you have...

Discovered by an American student named Gary Flandro in the mid-1960s, the slingshot manoeuvre usually involves spacecraft briefly 'coat-tailing' a planet orbiting the Sun, extracting some of the...

The ice disappears because the wind blows away water molecules that have evaporated or 'sublimed' from the ice, so the ice slowly shrinks in size. The molecules that escape are those with the...