Open Access
Table 1
Summary of freshwater mussel collection data based on repeated timed-searches (4.5 h) at 54 southern Ontario river sites.
| Species | Total Number | Rank Abundance1 | Naive Occupancy2 | Mean (range) Shell Length |
|---|---|---|---|---|
| Alasmidonta marginata | 17 | 11.7 | 5 | 57 (34–74) |
| Alasmidonta undulata | 37 | 10.7 | 4 | 43 (24–54) |
| Anodontoides ferussacianus | 540 | 3.3 | 18 | 49 (18–95) |
| Elliptio complanata | 8244 | 1 | 41 | 68 (11–131) |
| Lampsilis cardium | 91 | 9 | 14 | 94 (51–141) |
| Lampsilis siliquoidea | 228 | 7 | 18 | 54 (14–110) |
| Lasmigona compressa | 162 | 8 | 16 | 64 (24–92) |
| Lasmigona costata | 952 | 2 | 29 | 100 (17–191) |
| Ligumia nasuta | 1 | 13 | 1 | 79 |
| Ligumia recta | 29 | 10.7 | 10 | 123 (65–157) |
| Pyganodon grandis | 344 | 5 | 11 | 83 (36–132) |
| Strophitus undulatus | 331 | 5.3 | 22 | 61 (26–106) |
| Villosa iris | 401 | 4.3 | 21 | 70 (17–115) |
(1)mean value over three sampling events; (2)percentage of sites species collected from.
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