May 2017
Intermediate to advanced
294 pages
7h 33m
English
In 2006, Suzuki, Tsurusaki, and Kodama did some research on the distribution of an endangered burrowing spider on different beaches in Japan. Refer to https://www.jstage.jst.go.jp/article/asjaa/55/2/55_2_79/_pdf for more information.
Here's some data about the grain size and the presence of the spiders:
| Grain size (mm) | Spider present |
| 0.245 | Absent |
| 0.247 | Absent |
| 0.285 | Present |
| 0.299 | Present |
| 0.327 | Present |
| 0.347 | Present |
| 0.356 | Absent |
| 0.36 | Present |
| 0.363 | Absent |
| 0.364 | Present |
| 0.398 | Absent |
| 0.4 | Present |
| 0.409 | Absent |
| 0.421 | Present |
| 0.432 | Absent |
| 0.473 | Present |
| 0.509 | Present |
| 0.529 | Present |
| 0.561 | Absent |
| 0.569 | Absent |
| 0.594 | Present |
| 0.638 | Present |
| 0.656 | Present |
| 0.816 | Present |
| 0.853 | Present |
| 0.938 ... |
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