Foods of the Desert Tortoise, Gopherus agassizii, in Arizona and Utah

  • Hansen R
  • Johnson M
  • Devender T
  • 18

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Abstract

The diet of the desert tortoise,G opherusa gassiziiw, as determinedfr omt hreea reasa t the base of the GrandW ash Cliffs above Lake Mead,A rizonaf,r oma n areai n the New WaterM ountains, A rizonaa, nd fromt he centralB eaverD am Wash,U tah. Thirty-twok indso f plants,b ird feathers, mammalh airs,s nake and lizard scales, and arthropodp artsw ere classifiedf romt he microhistological analysiso f fecal droppingsf rom desertt ortoises.F oxtail brome, globemallows, lim tridensa nd threeawn madeu p > 80% of the tortoised iets fromt he GrandC anyona reas. Threeawns, lim tridens,b ush muhlya nd slenderj anusiam adeu p > 90%o f the diets fromt he New WaterM ountains.F oxtailb rome and redstem filaree made up > 80% of the tortoise diets from the Beaver Dam Wash area.

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Authors

  • Richard M Hansen

  • Mark K Johnson

  • Thomas R Van Devender

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