Record Details
Acute effects of sedimentation on Cumella vulgaris hart 1930 (cumacea)
ScholarsArchive at Oregon State University
| Field | Value |
|---|---|
| Title | Acute effects of sedimentation on Cumella vulgaris hart 1930 (cumacea) |
| Names |
King, Alan Roy
(creator) McCauley, James E. (advisor) |
| Date Issued | 1977-03-01 (iso8601) |
| Note | Graduation date: 1977 |
| Abstract | The ability of Cumella vulgaris to avoid burial under different rates of sedimentation and to recover from burial once buried was studied. Sedimentation rates higher than 0. 25 cm/mm are necessary to bury 50% of C. vulgaris with the deposition of 4 cm of sediment. Cumella vulgaris can swim several times faster than the sedimentation rates at which fine sand successfully buried it. Immatures and females swam at speeds of 0.25-1.5 cm/sec; males swam at speeds up to 5 cm/sec. Sinking speeds of live C. vulgaris were proportional to size and varied from 0.2-1.6 cm/sec. Cumella vulgaris should be able to avoid burial by dredging caused sedimentation. Dredging's most important impact on this species would most likely be long term changes in a bay which might reduce its habitat. Dead C. vulgaris were buried in their habitat in winter. Four days later one-half were successfully recovered by coring. When doing field studies of the acute effects of dredging on a habitat one needs to be aware that victims of burial may be recoverable for several days after death and may need to be distinguished from living animals. |
| Genre | Thesis/Dissertation |
| Topic | Cumacea |
| Identifier | http://hdl.handle.net/1957/27928 |
