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A region where precipitation is insufficient to support any except xerophilous (drought resistant) vegetation; a region of extreme aridity. See desert climate, trade-wind desert, equatorial dry zone.
How A Sahara Desert Plants Can Make New Somethings
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How A Sahara Desert Plants Can Make New Somethings
By Henry Diaz
Many aspects have been covered in this article so that you can benefit from an extended research.
People think of the Sahara as a hopeless wasteland with slim prospects for living things. But enough Sahara plants exist to make this thought untrue. It's not a matter of enough water, or too much heat during the day and cold at night, but a matter of how life has found a way to adapt to and survive in this unusual environment.
Shortly after the last Ice Age is a Sahara wasn't the same as it is now. Sahara plants at that time could expect more moisture and thus were more abundant. Not only do the plants there survive with little moisture, a lot of moisture would actually kill them. It's just like animals that adapt to cold conditions. They'd be in trouble in places that were much warmer.
Sahara plants include common plants like shrubs and grass. Grasses in particular can get by with not much water because they tend to spread over such a large area and therefore can taken in enough moisture to survive. These grasses aren't like the lush green lawns found in suburban yards, but they survive in an environment where not much can make it. The same can be said of the trees. Don't expect leafy shade trees like the ones in the country pictures.
Sahara plants don't often have wide leaves
because there's too much surface area there. Hot, dry conditions of a cause rapid evaporation. Plants would soon die if their moisture flew off into the atmosphere. Wide leaves provide too much surface for evaporation. Needles and spines, however, don't have as much surface area and thus evaporation is less rapid. Cacti develop thick trunks to protect their water from surface evaporation. Hanging onto every drop of available moisture is most important.
Sahara plants also have to survive in soil that's full of salt. Halphytes thrive in the desert, that is plants that are fine with a lot of salt.
Sure the Sahara isn't an ideal place for plants to live. But Sahara plants grow and thrive because life always finds a way.
I hope the information in this article was helpful and I thank you for taking your time to read.
If you observe a really happy man you will find him building a boat, writing a symphony, educating his son, growing double dahlias in his garden, or looking for dinosaur eggs in the Gobi desert. He will not be searching for happiness as if it were a collar button that has rolled under the radiator. He will not be striving for it as a goal in itself. He will have become aware that he is happy in the course of living life twenty-four crowded hours of the day. ~W. Beran Wolfe
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