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United States Department of Agriculture

Agricultural Research Service

ARS Photo Library

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Image Number K11418-1

Giant salvinia grows so thick it forms mats that block out sunlight and use up oxygen in lakes and ponds. Here, in a greenhouse, Student Conservation Association intern Melissa Martin and entomologist Philip Tipping record giant salvinia biomass.

Photo by Peggy Greb.



640 pixels wide: (k11418-1.jpg)




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Last Modified: 5/23/2006
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