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dc.contributor.authorGillard, R.M.en_US
dc.contributor.otheren_US
dc.date.accessioned2010-02-15T17:05:08Z
dc.date.available2010-02-15T17:05:08Z
dc.date.issued1974en_US
dc.identifier.urihttp://hdl.handle.net/1969.3/21678
dc.description186 p., Dissertationen_US
dc.description.abstractBenthic collections were made with a modified Ekman dredge over a period of 18 months from August 1970 through January 1972 at 17 stations in Tabbs Bay and upper Galveston Bay, Texas. A total of 87 species, including 24 polychaete worms, 10 gastropod snails, 11 pelecypod clams, and 26 crustaceans, were collected. The total number of species, number of individuals, and the Shannon and Weaver species diversity index were used as benthic community parameters in relation to the environmental parameters of sediment composition, temperature, salinity, dissolved oxygen, seasonal, areal, and pollution effects. There was no significant community change as the southernly distance increased to 5 miles or 7,810 meters from the inflow of pollutants into upper Galveston Bay. It was hypothesized that most of the pollutants within the deep channel sediments remain in channel sediments and do not become incorporated within the sediments of the more shallow regions of the bay because of the large 10 m depth difference between these regions. A gradual rise and stabilization of salinities at approximately 20 o/oo is believed to have been responsible for a rise in the number of species and diversity index over the study period. Based on the benthic communities, the study area was divided into the following 4 areas; area 1-upper Tabbs Bay had few species, a low diversity index and inconsistently large populations of the polychaetes Streblospio benedicti. This area was apparently adversely affected by pollution from the Houston Ship Channel. Area 2-lower Tabbs Bay was dominated by the polychaete Mediomastus californiensis and had greater numbers of the oligochaete Peloscolex gabriellae than any other area. Lower salinities during periods of increased runoff reflected the inflow of Cedar Bayou waters and possibly the close proximity to Trinity Bay itself. Area 3-stations approximately 75 meters from the Houston Ship Channel had a distinctive community. Many Diopatra cuprea (polychaete) tubes acted as substrate for epifauna and otheren_US
dc.description.urihttp://gbic.tamug.edu/request.htmen_US
dc.publisherTexas A&M University.en_US
dc.relation.ispartofseries388.00en_US
dc.relation.urien_US
dc.subjectecological distributionen_US
dc.subjectabundanceen_US
dc.subjectspecies diversityen_US
dc.subjectbenthosen_US
dc.subjectmarine invertebratesen_US
dc.subjectchannelsen_US
dc.subjectpollutionen_US
dc.subjectEkman dredgeen_US
dc.subjectmeiobenthosen_US
dc.subjectenvironmental impacten_US
dc.titleDistribution, abundance, and species diversity of macrobenthic and meiobenthic invertebrates in relation to Houston Ship Channel pollution in upper Galveston Bay and Tabbs Bay, Texas.en_US
dc.typeBooken_US
dc.placeCollege Station, Texasen_US
dc.seriesen_US
dc.vol-issueen_US
dc.geo-codeHouston Ship Channelen_US
dc.geo-codeTabbs Bayen_US
dc.geo-codeTrinity Bayen_US
dc.geo-codeGalveston Bayen_US
dc.geo-codeCedar Bayouen_US
dc.locationGBIC Collectionen_US
dc.scaleen_US
dc.latitudeen_US
dc.longitudeen_US
dc.contract-noen_US
dc.notesen_US
dc.degreeen_US
dc.acquisition-srcen_US
dc.description-otheren_US
dc.universityen_US
dc.historyen_US
dc.call-noQH541.5.W3 G5 1974 GBAYen_US


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