Fishery survey of Cedar Lakes and the Brazos and San Bernard River estuaries.

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dc.acquisition-srcen_US
dc.call-noShelved by seriesen_US
dc.call-noREF Shelved by seriesen_US
dc.contract-noen_US
dc.contributor.authorJohnson, R.B., Jr.en_US
dc.contributor.otheren_US
dc.date.accessioned2010-02-15T16:51:55Z
dc.date.available2010-02-15T16:51:55Z
dc.date.issued1977en_US
dc.degreeen_US
dc.description65 p.en_US
dc.description-otheren_US
dc.description.abstractA fishery study of Cedar Lakes and the lower parts of the Brazos and San Bernard Rivers, Brazoria County, Texas, was conducted in February 1973 to January 1975. Samples were collected at 17 stations each month to determine hydrological conditions and occurrence of estuarine organisms. Salinity, temperature, dissolved oxygen values, pH values and turbidity were determined in surface and bottom water samples. An otter trawl was used to sample nekton. Benthos was sampled quarterly at the 17 stations with an Ekman dredge. Samples were collected at four stations monthly after December 1973 with a minnow seine. Area and station descriptions are presented. Additional biological samples were collected in back bays, bayous and sloughs with the otter trawl and minnow seine. Combined with samples from several regular stations, information was used to map nursery habitat of 10 species of fish and crustaceans of economic value. Salinity was affected by river and stream discharge, tidal intrusion from the Gulf of Mexico, and industrial waste brine and cooling water discharges. The salinity range was zero to 32.2 ppt. Water temperature ranged from 8.8 to 35.1C, highest values occurring near a cooling water discharge in the Brazos River. Dissolved oxygen values were highest in winter and lowest in summer. Values less than 3.0 ppm were recorded in the Brazos and San Bernard Rivers. Effects of pollution are discussed. pH values were within the range of most natural waters, ranging from pH 6.4 to 8.9 Turbidity was affected by river discharge. Values exceeded 395 JTU in parts of the Brazos River 11 months of the study. Of 146 species of fish and invertebrates observed or caught in the study area, 35 were marine species which contribute to Texas recreational and commercial fisheries. An annotated checklist is presented. Cedar Lakes, Cow Troop Lake, Cedar Lake Bayou, Pelican Lake, McNeal Lake, McNeal Bayou, Jones Lake, Jones Creek, Old Reservoir, Bryan Lake and the lower 18.4 km of the San Bernard River are vital fisheries habitats. Pollution in the lower Brazos River has eliminated 9.8 to 211.1 km (depending upon weather conditions) of stream bottom from substantial fisheries production.en_US
dc.description.urihttp://gbic.tamug.edu/request.htmen_US
dc.geo-codeCedar Lakeen_US
dc.geo-codeBrazoria Countyen_US
dc.geo-codeBrazos Countyen_US
dc.geo-codeBrazos Riveren_US
dc.geo-codeCedar Creeken_US
dc.geo-codeCedar Bayouen_US
dc.historyNovember 1994; 12-Apr-1999 (rac)en_US
dc.identifier.urihttp://hdl.handle.net/1969.3/19462
dc.latitudeen_US
dc.locationTAMUG periodical collection; Galveston Bay Collectionen_US
dc.longitudeen_US
dc.notesen_US
dc.publisheren_US
dc.relation.ispartofseries1700.00en_US
dc.relation.urien_US
dc.scaleen_US
dc.seriesTexas Parks and Wildlife Dept., Technical Series No. 23en_US
dc.subjectinland fisheriesen_US
dc.subjectestuarine fisheriesen_US
dc.subjecthydrologyen_US
dc.subjectpollutionen_US
dc.subjectwater pollutionen_US
dc.subjectcheck listsen_US
dc.titleFishery survey of Cedar Lakes and the Brazos and San Bernard River estuaries.en_US
dc.typeBooken_US
dc.universityen_US
dc.vol-issueen_US

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