15.21 Do lizards play a role in spreading plant seeds? Some research carried out in South Africa...

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15.21 Do lizards play a role in spreading plant seeds?

Some research carried out in South Africa would suggest so

(“Dispersal of Namaqua Fig [Ficus cordata cordata]

Seeds by the Augrabies Flat Lizard [Platysaurus broadleyi],” Journal of Herpetology [1999]: 328–330).

The researchers collected 400 seeds of this particular type of fig, 100 of which were from each treatment: lizard dung, bird dung, rock hyrax dung, and uneaten figs. They planted these seeds in batches of 5, and for each group of 5 they recorded how many of the seeds germinated. This resulted in 20 observations for each treatment. The treatment means and standard deviations are given in the accompanying table.

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Introduction To Statistics And Data Analysis

ISBN: 9780840054906

4th Edition

Authors: Roxy Peck, Chris Olsen, Jay L. Devore

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