Now showing items 9352-9371 of 10082

  • Trends in Selected Water Quality Parameters for the Houston Ship Channel 

    Evans, Diane; Schrodt, Barbara J.; Koska, Paul C.; Crocker, Philip A. (United States Environmental Protection Agency, 1992-09)
    While many believe water quality in the Houston Ship Channel is improving, water quality trends have not been adequately verified and documented. An investigation was made utilizing ambient monitoring data to make inferences ...
  • Trends in selected water quality parameters for the Houston Ship Channel (vol. 1 - main text; vol. 2 - appendices) 

    Crocker, PA; Koska, PC; Schrodt, BJ; Evans, D (United States Environmental Protection Agency, Region 6, 1992)
    While many believe water quality in the Houston Ship Channel is improving, water quality trends have not been adequately verified and documented. An investigation was made utilizing ambient monitoring data to make inferences ...
  • Trends in Selected Water Quality Parameters for the Houston Ship Channel - April 1992 Draft 

    Crocker, Philip A. (United States Environmental Protection Agency, 1992-04)
    This is the draft edition of the item found at Accession # 10393.
  • Trends in special interest travel. 

    Alpine, L. (, 1986)
    No abstract available
  • Trends in spotted seatrout and red drum abundance in Texas coastal waters influenced by commercial netting activities. 

    Matlock, G.C.; Weaver, J.E.; Green, A.W. (, 1976)
    Spotted seatrout (Cynoscion nebulosus) and red drum (Sciaenops ocellata) population in Texas bays were randomly sampled with 183 m long gill nets November 1975 through March 1976 and November 1976 through March 1977. Catch ...
  • Trends in Texas commercial fisheries landings, 1977-1984 

    Osburn, H.R.; Saul, G.E.; Hamilton, C.L. (Texas Parks and Wildlife Department, Coastal Fisheries Branch, 1985)
    The Texas Parks and Wildlife Department in cooperation with the National Marine Fisheries Service collects data on commercially landed finfishes and shellfishes from Texas' bays and from the Gulf of Mexico off Texas. ...
  • Trends in Texas commercial fishery landings, 1972-1989 

    Johns, Michael A. (Texas Parks and Wildlife Department, Coastal Fisheries Branch, 1990)
    The Texas Parks and Wildlife Department in cooperation with the National Marine Fisheries Service collects data on commercially landed finfish and shellfish from Texas bays and from the Gulf of Mexico off Texas. The total ...
  • Trends in Texas commercial fishery landings, 1972-1994 

    Robinson, L.; Campbell, P.; Butler, L. (Texas Parks and Wildlife Department, Coastal Fisheries Branch, 1995)
    This report summarizes annual commercial landings and ex-vessel value statistics of finfish and shellfish harvested from Texas bays and the Gulf of Mexico off Texas. Seafood dealers submitted monthly reports of purchases ...
  • Trends in Texas Commercial Fishery Landings, 1972-1998 

    Robinson, Lance, Page Campbell, and Linda Butler (Texas Parks & Wildlife, Coastal Fisheries Division, 2000)
    This report summarized annual commercial landings and ex-vessel value statistics or finfish and shellfish harvested from Texas bays and the Gulf of Mexico off Texas. Seafood dealers submitted monthly reports of purchase ...
  • Trends in Texas commercial fishery landings, 1977-1985 

    Osburn, H.R.; Saul, G.E.; Hamilton, C.L. (Texas Parks and Wildlife Department, Coastal Fisheries Branch, 1986)
    The Texas Parks and Wildlife Department in cooperation with the National Marine Fisheries Service collects data on commercially landed finfish and shellfish from Texas bays and from the Gulf of Mexico off Texas. Shrimp ...
  • Trends in Texas commercial fishery landings, 1977-1986 

    Osburn, H.R.; Quast, W.D.; Hamilton, C.L. (Texas Parks and Wildlife Department, Coastal Fisheries Branch, 1987)
    The Texas Parks and Wildlife Department in cooperation with the National Marine Fisheries Service collects data commercially landed finfish and shellfish from Texas bays and from the Gulf of Mexico off Texas. Shrimp continue ...
  • Trends in Texas commercial fishery landings, 1977-1987 

    Quast, W.D.; Searcy, T.S.; Osburn, H.R. (Texas Parks and Wildlife Department, Coastal Fisheries Branch, 1988)
    The Texas Parks and Wildlife Department in cooperation with the National Marine Fisheries Service collects data on commercially landed finfish and shellfish from Texas bays and from the Gulf of Mexico off Texas. Shrimp ...
  • Trends in Texas commercial fishery landings, 1977-1988 

    Quast, W.D.; Dansby, B.G.; Henderson, M. (Texas Parks and Wildlife Department, Coastal Fisheries Branch, 1989)
    This report presents the landings and ex-vessel value of self- reported transactions from seafood dealers to the Texas Parks and Wildlife Department and landings and ex-vessel value data collected by the National Marine ...
  • Trends in the Galveston Bay oyster fishery, 1979-1984 

    Hofstetter, R.P. (Texas Parks and Wildlife Department, Coastal Fisheries Branch, 1988)
    Spring floods of the Trinity River destroyed Eastern oyster (Crassostrea virginica) populations on 217 ha of Trinity Bay reefs and damaged populations on an additional 100-120 ha in 1979. Heavy rainfall from summer tropical ...
  • Trends in the relative abundance, size, and catch of selected finfish and shellfish from Galveston Bay: 1978-1996 

    Robinson, Lance (Texas Natural Resource Conservation Commission, 1999)
    The recreational and commercial fisheries of Texas are a valuable resource to the citizens of Texas. For 1996 (the most recent year data from both fisheries are available) the total economic impact of these fisheries to ...
  • Trends in water and sediment quality for the Houston Ship Channel 

    Crocker, Philip A.; Koska, Paul C. (, November 1)
    Ambient monitoring data collected by the Texas Natural Resource Conservation Commission from 1971 through 1991 were assessed for five stations located on the Houston Ship Channel mainstem (Turning Basin, Greens Bayou, San ...
  • Trends of PCB, hexachlorobenzene, and B-benzene hexachloride levels in the adipose tissue of the U.S. population 

    Robinson, P.E.; Mack, G.A.; Remmers, J.; Levy, R.; Mohadjer, L. (, 1990)
    Results are presented on the levels of selected toxic chemicals in the adipose tissue of the U.S. population. Estimates of baseline levels and time trends are presented for the chemicals b-benzene hexachloride (b-BHC), ...
  • Trends toward decreasing size of brown shrimp, Penaeus aztecus, and white shrimp, Penaeus setiferus, in reported annual catches from Texas and Louisiana 

    Caillouet, C.W.; Patella, F.J.; Jackson, W.B. (U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, National Marine Fisheries Service, 1980)
    An exponential model adequately characterized the size composition (expressed as a regression of transformed cumulative percentage of weight on size category) of reported annual catches of brown and white shrimp in Texas ...
  • Tributyltin contamination in bivalves from United States coastal estuaries. 

    Wade, T.L.; Garcia-Romero, B.; Brooks, J.M. (, 1988)
    Most oysters and mussels from U.S. coastal waters are contaminated with tributyltin (TBT) and its less toxic breakdown products (dibutyltin and monobutyltin). The concentrations of TBTs range from <5 to 1560 (366 av.) ng ...
  • Trinitarian thoughts on descending into the Grand Canyon 

    Jones WP (, 1992 Oct)
    Offers the author's comments on the spiritual pilgrimage he undertook when he hiked from the south rim of the Grand Canyon to the Colorado River floor. First experience with a Navajo healing ceremony; Costly price of the ...