Utilization of the upper Houston Ship Channel by fish and macroinvertebrates with respect to water quality trends /
1006 (downstream) and 1007 (upstream) during May 1988
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| Format: | Thesis eBook |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1994.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | 1006 (downstream) and 1007 (upstream) during May 1988 1006 and exhibited hypoxic conditions. and macroinvertebrate populations. Impact of basic water and near-anoxic dissolved oxygen levels. By contrast, catch and revolving screen collections from two deep-water and six bottom waters restrict nekton utilization of segment 1007 composition by dominant taxa was determined and effect of composition, abundance and community structure of finfish comprising 84 taxa. Spatial and temporal trends in catch dissolved oxygen levels in segment 1007 during May through dissolved oxygen levels peaked and water temperatures ebbed. diversity and number of taxa were comparable between during summer. Richness and abundance in segment 1007 during winter equaled or exceeded that of segment 1006. early fall when mean bottom temperature and dissolved oxygen HSC segment 1006 maintains healthy shoreline and bottom levels were highest and lowest, respectively. Cumulative nekton communities year-round. Low dissolved oxygen in Nektonic utilization of the upper Houston Ship Channel (HSC) number of taxa was highest in both segments during winter. quality trends on utilization was evaluated. seine, gillnet segment 1006. Surface water temperatures appeared to exert segment 1007 as compared to those of segment 1006. Species Segment 1007 during November through March when bottom segments and followed expected seasonal trends. Mean bottom segments. Distinct reductions in catch, number of taxa and September were consistently 1 to 1.5 mg/l lower than segment shoreline sampling stations in upper HSC stream segments Significantly greater catch and biomass were observed in Significantly reduced catches in segment 1007 during May species diversity characterized winter seine collections in statistics examined. Mean surface (shoreline) water statistics from segment 1006 were highest during summer and statistics, species diversity, and hydrological variables statistics. Revolving screen catches were greatest in temperature and dissolved oxygen levels were similar between temperature, salinity and dissolved oxygen on catch the greatest hydrological influence on shoreline catch through July 1989 yielded 33,042 nektonic organisms through October coincided with highest water temperatures was assessed through characterization of species were assessed for each sampling gear type. Seasonal |
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| Item Description: | "Major subject: Wildlife and Fisheries Sciences". Vita. |
| Physical Description: | xvi, 207 leaves : illustrations, maps ; 28 cm. Also available online. |
| Bibliography: | Includes bibliographical references. |