Population density and distribution of the estuarine clam Rangia cuneata in Croatan Sound, North Carolina / by Roger Moser Crump.
| Author/creator |
Crump, Roger Moser author. |
| Other author/creator | Bellis, Vincent J., 1938- degree supervisor. |
| Other author/creator | East Carolina University. Department of Biology. |
| Format | Theses and dissertations and Archival & Manuscript Material |
| Production Info | 1971. |
| Description | 68 leaves : illustrations, maps ; 29 cm |
| Supplemental Content | Access via ScholarShip |
| Subject(s) |
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| Summary | Rangia cuneata, an estuarine clam, occurs in scattered patches along the northwestern shore in Croatan Sound. Population density ranged up to 12 clams per square meter. Overall distribution of Rangia was correlated with bottom, sediment type, being found primarily on fine and medium-fine sand substrates. Local distribution is related to mean grain size, organic content of the sediment, and water depth. Shallow, mesohaline water with a medium-fine sand substrate, low in organics, best describes the habitat of Rangia cuneata in Croatan Sound. Six separate size frequencies (year classes) were found during the survey. The fourth and fifth year clams were most abundant. According to this study, the five year Rangia should be the most economically profitable clams, since their meat weight was double that of the four year clams. Rangia's thick shell accounted for 75% of its total weight, thus making it an Important carbonate source, both commercially and ecologically. |
| General note | "Presented to the faculty of the Department of Biology ... in partial fulfillment of the requirements for the degree Master of Arts in Biology." |
| General note | Advisor: Vincent J. Bellis |
| Dissertation note | M.A. East Carolina University 1971 |
| Bibliography note | Includes bibliographical references (leaves 44-45). |
| Genre/form | Academic theses. |
| Genre/form | Academic theses. |
| Genre/form | Thèses et écrits académiques. |
Available Items
| Library | Location | Call Number | Status | Item Actions | |
| University Archives | ASK AT SPECIAL COLLECTIONS DESK | ✔ Available | Request Material | ||
| Electronic Resources | Access Content Online | ✔ Available | |||
| NC Stacks | QL430.7.M3 C78X 1971 2 | ✔ Available | Place Hold |