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This book provides a comprehensive discussion on plant responses in
hyperarid regions of Egypt, China, Mexico, and Pakistan. It
describes their location, physiographic features, accidental
vegetation along two transects, endangered vegetation species,
human impact, and variety of plant types (e.g. climbing, succulent,
and parasitic). Studies on biotic and abiotic interactions, plant
biodiversity, and soil-plant relationships are also covered.
Covering a wide range of plant conditions and adaptations, this
book analyzes what happens when plants must endure very high
temperatures and aridity. Plants have adapted by evolving their
physical structure to store and conserve water. Examples are the
absence of leaves which reduces transpiration and the growth of
extremely long roots, allowing them to acquire moisture at, or near
the water table. Plants in hyperarid habitats have also made
behavioral adaptations in order to survive by synchronizing with
the seasons of greatest moisture and/or coolest temperatures. For
example, desert perennials remain dormant during dry periods of the
year, then spring to life when water becomes available. The book
includes many color illustrations, and has extensive and up-to-date
references for further reading.
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