Mechanisms of transport of estuarine related larval fishes and invertebrates through tidal passes of the Texas coast /
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| Other Authors: | , , , |
| Format: | Thesis Book |
| Language: | English |
| Published: |
1990.
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| Subjects: | |
| Online Access: | ProQuest, Abstract Link to OAKTrust copy |
| Abstract: | The mechanisms of transport through tidal passes were examined for several estuarine-dependent fish, crab, and shrimp larvae. Stratified plankton tows were collected every two hours over twelve or twenty-four hour periods at three passes in the Matagorda Bay system of the south Texas coast from April through August, 1987. The relationships between larval abundance and seven physical parameters were examined statistically. A numerical model of coastal circulation was utilized to examine the effects of various combinations of freshwater inflow and wind regimes. At least three mechanisms of behavioral transport enhancement were identified. Most larvae were bottom oriented as they migrated through passes. Other larval types exhibited the leapfrog or the net-movement mechanism. The relationship between larval abundance and temperature and salinity showed seasonal rather than tidal periodicities. High abundances were associated with flood tides and high tidal heights. Wind effect on larvae varied depending upon the wind's orientation and strength, and the life history of the organism in question. Model results indicate that there is a relationship between success of transport through tidal passes and increased freshwater flow. |
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| Item Description: | Typescript (photocopy). Vita. "Major subject: Oceanography." |
| Physical Description: | xviii, 293 leaves ; 29 cm |
| Bibliography: | Includes bibliographical references. |