Duckweed in ditch water

Duckweed in ditch water

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Credit: DR JEREMY BURGESS/SCIENCE PHOTO LIBRARY

Caption: Duckweed, Lemna minor blanketing the water in a ditch near a nature reserve at Upton, Norwich, UK. The ditch is feed by run-off water from an adjacent arable field; the excess nutrients in the water, caused by the use of fertilizers, encourage the growth of blanketing species such as the duckweed. This in turn supresses the growth of other species (such as water lilies), by shading the light falling on the water surface. The body of water loses the variety of species it would normally contain.

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Keywords: blanketing species, botany, duckweed, england, lemna minor, life, nature, plant, pollution, pond, ponds, uk, united kingdom, water

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