5 research outputs found
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Research report : enhanced hydrographic survey for CPL discharge in Nueces Bay
The objectives of the enhanced hydrographic survey in Nueces were: A. to monitor the vertical and horizontal distributions of temperature and salinity, nutrients and plant pigments in the nearby area of the CPL cooling water discharge channel in Nueces Bay. B. to compare the distributions of the above parameters to those throughout other portions of Nueces Bay during freshwater release and non-release periodsFor Central Power and Light Company ... Corpus Christi, Texas ...November 1993Marine Scienc
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Brown Tide Symposium and Workshop : 15-16 July 1991
The 'brown tide' bloom of an aberrant Chrysophyte sp. phytoplankter occurred for more than 18 months and extended into both upper (cover map) and lower Laguna Madre, Texas. Great concern for the Laguna Madre ecosystem was shown during the brown tide event by local, state and regional groups, but little previous knowledge was available about this unusual phytoplankton bloom. Since field data had been collected by an ongoing UTMSI field program in the Laguna, it was felt that a workshop format meeting should be convened with national and international experts to discuss the data and results on brown tide and other unusual phytoplankton blooms. A relatively quick response was needed as planning for the workshop started in May 1991 for a meeting date in July, with support supplied by the Gulf of Mexico Program of U.S. Environmental Protection Agency (Grant No. X 006242-01-0), The Resource Protection Division of the Texas Parks and Wildlife Department and The University of Texas Marine Science Institute. This report includes the agenda, abstracts of presentations and summary of findings by the workshop participants. The participants also strongly agreed that long term research support was necessary to further understand the brown tide bloom and its effects. To that end, a resolution was drafted and unanimously approved by all the workshop participants.September 1991Marine Scienc
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Nutrient distributions and dynamics in Lavaca, San Antonio and Nueces/Corpus Christi bays in relation to freshwater inflow
For Bays and Estuaries Program, Environmental Systems Section, Texas Water Development BoardDecember 1989Part I: The Nitrogen Processes Study (NIPS) was undertaken under contract from the Texas Water Development Board in order to better understand the relationship of freshwater inflow into South Texas estuaries and the biological productivity that occurs in them. It is important to study the characteristics of the inflow especially the nitrogen components because nitrogen is generally regarded as the "essential" nutrient whose abundance controls the amount of biological production of an ecosystem (Ryther and Dunston, 1972; Thayer, 1974; Boynton et al., 1982).Part II: This volume contains all hydrographic, nutrient and chlorophyll data collected at discrete sampling depths during 1986-1987 in San Antonio Bay and 1987-1988 in Nueces/Corpus Christi Bay. Water samples were normally collected just under the surface by hand and approximately 4 inches above the bottom by a horizontal water sampling bottle. Since the Seabird CTD instrument records a continuous profile, not all of the data are reported here. The surface and bottom values were extracted from the data and merged with the water sample data. The complete profiles of CTD data are contained in the reports of A. Amos. Additional details of sampling and analysis methods are given in Volume I of this report.Part III: This volume contains time series data plots obtained on experimental stations during intensive process oriented samplings. Suitable shipboard space was not available during the initial phase of NIPS-I in San Antonio Bay so the temporal resolution was relatively poor. Later samplings at station locations A and C improved to hourly samples for as long as 24 hours, however sites B and D were still sampled by small boat so darkness an d inclement weather prevented some collections. Better ship availability reduced these problems during NIPS-II in Nueces/Corpus Christi Bays. Additional details of sampling and analysis methods are given in Volume 1 of this report and tabular listings are contained in Part III.pt. 1. Results and discussion -- pt. 2. Hydrography, nutrient and chlorophyll data tables -- pt. 3. Data plots.Marine Scienc
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Nutrient enhanced coastal ocean productivity : CTD observations from the R/V Longhorn Cruise, May 5-13, 1992
This report describes the hydrographic database acquired as part of the third year field effort of the NOAA-funded Nutrient Enhanced Coastal Ocean Productivity (NECOP) Program. The data presented here were gathered aboard R/V Longhorn May 14-21, 1992. A. Bratkovich was chief scientist. The general objective of the cruise was to acquire hydrographic, biological, and chemical data suitable for process-oriented ecological studies of the receiving waters of the Mississippi and Atchafalaya Rivers. Sampling stations were in the Gulf of Mexico (particularly in the river plume region), the Mississippi River channel, and Atchafalya Bay. At the 64 stations visited by R/V Longhorn, a total of 63 casts. Included in this report are the CTD log, planview map of the NECOP region, plots of CTD data, and corresponding data tables. The CTD log lists the stations numbers, locations, and times of the casts. The locations of the stations for the cruise are shown on one planview map. For each CTD cast, the bin-averaged data is presented in a plot with a table on the facing page. For ease of comparison, data from stations of similar depth and close proximity are plotted on a common range and scale. The data in this report include temperature, salinity, density, dissolved oxygen, and light transmission. Associated nutrient, chlorophyll, and water bottle data are reported under a separate cover. This work was supported by NOAA's Coastal Ocean Program, directed by Dr. D. Scavia. The NECOP component of the program was managed by Drs. D. Atwood, W. Graham, and T. Bright.NOAA Great Lakes Environmental Research Laboratory ... Ann Arbor, MichiganNovember 1992Marine Scienc
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Effects of nutrient distributions on phytoplankton in lower Laguna Madre : with particular reference to brown tide
The appearance of a dense phytoplankton bloom of a brown tide algae in lower Laguna Madre during late 1990 greatly reduced water clarity and recreational sports fishing. A biological monitoring program was undertaken over a one year period, September 1994 to August 1995, to assess the distribution of nutrients and phytoplankton water quality parameters in lower Laguna Madre. Samples were collected at 21 locations during monthly surveys of hydrographic, nutrient and plant pigment parameters. The ambient growth rates of the phytoplankton and brown tide organisms were measured at 10 locations distributed throughout lower Laguna Madre with reference to areas of dominant circulation near the Gulf of Mexico passes, discharge of the Arroyo Colorado, and advective losses to the Land Cut. The relative abundance and distribution of the brown tide organism during the study period were assessed with regard to inflows and discharges within the lower Laguna Madre. A special effort was continued in the Harlingen Ship Channel with respect to freshwater inflows and shrimp mariculture facilities.September 1995For Texas General Land Office, Coastal DivisionMarine Scienc