Browsing by Author "Parker, Robert H."
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Item Environmental assessment of the Trinity River discharge on productivity in Trinity Bay: final report.(Coastal Ecosystems Management, 1972) Parker, Robert H.;The major objective of this report is to investigate environmental questions before additional steps can be taken to implement the completion of the Trinity River canalization project. Major consideration is given to: (1) the possible effect that the waters of the Trinity River drainage might have upon the overall biological productivity of its estuary and the greater Galveston Bay system; (2) how much runoff water from the basin must be guaranteed to the Galveston Bay system in order to provide optimum conditions for a smoothly running ecosystem; (3) the possible effect of reduced runoff and subsequently reduced sediment load in maintaining the various habitats and ecological niches in Trinity Bay. Recommendations of the report were: (1) to maintain a vigil against the increase of phosphate in Trinity Bay to guard against inhibition of plant production; (2) to insure that a sufficient river discharge is maintained so that a salinity gradient will exist from river mouth to bay mouth; (3) to permit at least 1,300,000 acre feet of water to be discharged into Trinity Bay to flush the bay twice a year; (4) to establish a minimum one-year environmental monitoring program to acquire the necessary data for continued management of the river discharge needed to maintain productivity in Trinity Bay; (5) to evaluate all hurricane protection levee systems and tidal exchange structures surrounding the Galveston Bay area before any proposed alterations of the Trinity River flow are made; (6) to survey all county and municipal waste disposal criteria to determine whether there is a need for a stricter pollution code or stricter enforcement of the present code. (Author)Item Macro-invertebrate assemblages of central Texas coastal bays and Laguna Madre(American Association of Petroleum Geologists, 1959) Parker, Robert H.; American Association of Petroleum Geologists BulletinA study of the distribution of macrofauna and the ecological factors affecting their distribution in the bays and lagoons of the central and south Texas coast has made it possible to formulate a series of criteria for interpreting modern and ancient depositional environments. The observations reported in this paper cover a 7-year period. In addition, some information was available covering a period of 30 years. The central Texas bays are situated in a variable climate, and the faunas reflect long-term changes in rainfall and temperature.Item Oyster Investigation Quarterly Report - April 1, 1951 to July 1, 1951(Texas Game and Fish Commission, 1951) Parker, Robert H.This investigation has been designed to search out the reasons for the decline in oyster production during the past few decades, and to find means of rehabilitating the industry on the Texas coast. Experiments have been carried out to find new methods for increasing the size and rate of growth of oysters. A preliminary survey of the local bays was made for a good commercial source of edible clams.Item Oyster Investigation Quarterly Report - January 1, 1951 to March 31, 1951(Texas Game and Fish Commission, 1951) Parker, Robert H.This investigation is designed to search out the reasons for oyster mortality in the past decade, and to find means of rehabilitating the industry on the Texas coast. A survey is being made of both live and dead oyster reefs in the coastal waters.Item Oyster Investigation Quarterly Report - October 1, 1950 to December 31, 1950(Texas Game and Fish Commission, 1951-01) Parker, Robert H.This investigation is now being conducted for the purpose of rehabilitating the oyster industry in Texas, and to promote or determine the advisability of commercial oyster cultivation. Information is also being obtained as to the effects of environment upon growth, mortality, and spawning of Ostrea virginica Gmelin.