Physical Sciences and Mathematics Commons^™

State Of Tampa Bay 1990, Tampa Bay Regional Planning Council (Tbrpc), Agency On Bay Management

Reports

To identify activities and actions that have occurred over the past year, the Tampa Bay Regional Planning Council's Agency on Bay Management annually develops a status report on the condition of the Tampa Bay estuary. This document represents the fifth annual "State of Tampa Bay" report pursuant to the adopted rules of the Council's Agency on Bay Management. The purpose of the "State of Tampa Bay" report is to: • serve as a reference for projects, programs and organizations that influence the bay and its watershed, • identify the condition of Tampa Bay over the past year, and • depict …

Seagrass And Caulerpa Monitoring In Hillsborough Bay Second Annual Report, City Of Tampa Department Of Sanitary Sewers

Reports

This is the second annual report to FDER to satisfy the requirements set forth in specific condition #6 of FDER construction permit DC29-152790.

The City of Tampa, Bay Study Group (BSG), has monitored the effects of sewage pollution abatement in Hillsborough Bay since 1976. Within the last decade, water quality improvements and evidence of minor seagrass revegetation in Hillsborough Bay prompted the BSG to initiate a seagrass study to compliment other programs assessing the environmental status of Hillsborough Bay.

Long-Term Trends Of Nitrogen Loading, Water Quality And Biological Indicators In Hillsborough Bay, Florida, J.O. R. Johansson

Reports

This report addresses general background information on Hillsborough Bay water quality, compares long-term nitrogen loading trends to water quality indicators, and recommends management options for improving bay conditions.

Long-Term Monitoring Of Water Quality And Biological Indicators In Hillsborough Bay, Tampa Bay, Florida, Bay Study Group, J. O. R. Johansson

Reports

The Bay . study Group of the City of Tampa has conducted an extensive monitoring program of water quality and various biological indicator organisms in Hillsborough Bay and Middle Tampa Bay since 1978 (Figure 1). Hillsborough Bay has generally had the poorest water quality of the Tampa Bay subsections. The monitoring program started as a comprehensive study of phytoplankton productivity and standing crop to evaluate anticipated future effects of domestic wastewater pollution abatement as the City of Tampa converted its wastewater treatment process from primary to state of the art nitro~en removal. The Bay stud¥ Group is the only organization …

First Epoch Geodetic Measurements With The Global Positioning System Across The Northern Caribbean Plate Boundary Zone, Timothy H. Dixon, G. Gonzalez, S. M. Lichten, E. Katsigris

School of Geosciences Faculty and Staff Publications

The first geodetic survey across the northern Caribbean plate boundary zone with the Global Positioning System (GPS) was conducted in June 1986. Baseline vectors defined by the six station regional GPS network ranged from 170 to 1260 km in length. Repeatability of independent daily baseline estimates was better than 8 mm plus 1.3 parts in 10⁸ of baseline length for horizontal components. The wet tropospheric path delay during the experiment was both high, sometimes exceeding 30 cm at zenith, and variable, sometimes exceeding 5 cm variation over several hours. Successful carrier phase cycle ambiguity resolution (“bias fixing”) could not …

1991 File Geodatabase Containing Photo Point Locations, Aerial Photos, And Flight Maps, City Of Tampa Department Of Sanitary Sewers Bay Study Group, Pete Reehling, Richard Mckenzie

Data Sets

The Bay Study Group was created by the City of Tampa in 1976 to monitor the effects of pollution abatement that occurred in Hillsborough Bay when the city’s wastewater treatment plant was upgraded from primary to advanced treatment in 1979. The Bay Study Group documented a remarkable restoration of water quality parameters and biological indicators in Hillsborough Bay from the mid 1980s until 2009, when it was disbanded. This zip Geodatabase file contains the photo point locations, aerial photos, and flight maps for the year 1991.

Metabolic Efficiency And Regulation Of Body Weight: A Comparison Between Life In Hypogean And Epigean Ecosystems, Jayant Biswas

International Journal of Speleology

In the present study metabolic efficiency in the epigean and hypogean populations of Nemacheilus evezardi (Day) was examined. Different experiments were conducted, in both populations, by keeping them either in restricted oxygen or restricted feeding conditions, including starvation. Results clearly show that the rate of oxygen consumption for the hypogean population was significantly less as compared to its epigean counterpart. Further, results also suggest that the hypogean population has a tremendous capacity to maintain its metabolic activity and regulate its body weight under severe conditions characterized by an absence or a limited supply of food.

Phytoplankton Studies In The Little Manatee River And Tampa Bay: Species Composition, Size Fractionated Chlorophyll, Primary Production, And Nitrogen Enrichment Studies, Gabriel A. Vargo

Reports

The objectives of the second year of study in the Little Manatee River and Tampa Bay focused on providing 1 information on the growth and production dynamics of several size classes of phytoplankton in the river/bay system and their response to nitrogen additions.

Field collections were done simultaneously with water quality sampling between February, 1989 and January, 1990.

Size Classification Of Bed Sediment And Selection Of Resuspension Monitoring Sites In Upper Tampa Bay, Florida, David H. Schoellhamer, Southwest Florida Water Management District (Sfwmd), City Of Tampa, City Of St. Petersburg, Hillsborough County, Pinellas County, Tampa Port Authority

Reports

The size classification of surficial bed sediments in upper Tampa Bay, Florida, including Hillsborough Bay, Old Tampa Bay, and middle Tampa Bay south of the Interbay Peninsu la, was determined during 1987-89. Fathometer transects were performed throughout the study area to determine the reflective characteristics of the bed, and grab samples were collected to relate the fathometer data to size classifications of sediments. The data collected during this study indicate that fine bed sediments are most abundant in Hillsborough Bay and least abundant in the southern part of the study area closest to the mouth of Tampa Bay. Generally, the …

Recent Areal Expansion Of Seagrass Meadows In Tampa Bay, Florida: Real Bay Improvement Or Drought-Induced?, R. R. Lewis Iii, K. D. Haddad, J.O. R. Johansson

Reports

Johansson and Lewis have documented improvements in water quality apparently associated with concurrent improvements to sewage treatment, particularly at the City of Tampa's Hookers Point Sewage Treatment Plant. These improvements are at least partially responsible for the significant decreases in chlorophyll a and increase in water clarity documented in Hillsborough Bay and Middle Tampa Bay.

1991 File Geodatabase Containing Aerial Photos, Pete Reehling, Richard Mckenzie, City Of Tampa Department Of Sanitary Sewers Bay Study Group

Images

The Bay Study Group was created by the City of Tampa in 1976 to monitor the effects of pollution abatement that occurred in Hillsborough Bay when the city’s wastewater treatment plant was upgraded from primary to advanced treatment in 1979. The Bay Study Group documented a remarkable restoration of water quality parameters and biological indicators in Hillsborough Bay from the mid 1980s until 2009, when it was disbanded. This zip Geodatabase file contains the aerial photos for the year 1991.

Revision Of The Genus Troglophilus (Orthoptera, Rhaphidophoridae) In Crete, Greece, Dimitrios Kollaros, Kaloust Paragamian, Anastassios Legakis

International Journal of Speleology

The genus Troglophilus (Orthoptera, Rhaphidophoridae) from Crete is revised using new data from specimens collected recently. The three previously reported species are considered to be only one, T. spinulosus, on the basis of morphological, ecological and distributional similarities. The species is more fully described and notes are given on its ecology.

Observations On The Biology Of Spelaelacris Tabulae Peringuey (Orthoptera, Rhaphidophoridae), From The Wynberg Cave (Capetown, South Africa), Gianmaria Carchini, Claudio Di Russo, Mauro Rampini

International Journal of Speleology

Data on the age structure, fecundity, egg morphology and feeding habits of the Spelaeiacris tabulae population from Wynberg cave are reported and compared with other Rhaphidophoridae species. S. tabulae shows a certain degree of adaptation to cave life, as usual in the other temperate species of Rhaphidophoridae.

Speciation Of Troglobites: Studies In The San Antonio Cave (Oaxaca, Mexico), Horst Wilkens, Peter Junge, Thomas G. Langecker

International Journal of Speleology

The phylogenetically young species community of San Antonio Cave (Oaxaca, Mexico) exemplifies the hypothesis that speciation of troglobites can occur in close contact with epigean predecessors. In a subterranean creek which continues outside with a rich epigean fauna, four troglobitic aquatic crustacean and one fish species (Rhamdia reddelli, Pimelodidae) were studied. Today not a single surface specimen can be found in the cave waters although several epigean species are troglophilic and/or are the ancestors of cave forms in other parts of Mexico. The absence of epigean invaders is attributed to the presence of specimens of some of the …

Population Size Of Pyrenean Troglobiont Coleopters (Speonomus Species) In A Cave In Belgium, Raymond Tercafs, Christine Brouwir

International Journal of Speleology

The population size of three troglobitic species of Speonomus (Coleoptera Bathysciinae) from the Pyrenees, intentionally introduced in 1969-1970 into the “Grotte de Ramioul” cave (Province of Liège, Belgium) has been studied using the mark-recapture technique. It has been shown that the three cave levels possess large Speonomus populations (upper network: 12,718; middle network: 13,902; lower network: 18,249 individuals) and that the superficial underground environment is also colonized, including the schist area. The most abundant species is Speonomus longicornis (relative frequency between 0.73 to 0.89). The two other species are present in the relative frequency between 0.04 and 0.23 for S. …

Cinder Cone Clustering In The Transmexican Volcanic Belt: Implications For Structural And Petrologic Models, Charles B. Connor

School of Geosciences Faculty and Staff Publications

Cinder cone distributions have most often been characterized using univariate statistics. Here a new technique to volcano distribution studies, cluster analysis, is applied to cinder cone distribution in the central TransMexican Volcanic Belt (TMVB). A total of 1016 cinder cones are identified over an area of approximately 60,000 km2. Application of cluster analysis reveals structure in cinder cone distribution. Using a search radius parameter of 16 km, 75% of the cinder cones within the central TMVB are found within eight clusters of 45–159 cones each. These clusters are each 2000 to 5000 km2 in area. Only 22 cones are found …

Justification For Continued Variance From The Hookers Point Awwtp Effluent Limitations For Phosphorous (1 Mg/L), City Of Tampa Department Of Sanitary Sewers

Reports

The Environmental Protection Commission of Hillsborough County requested on August 29, 1990 that the City of Tampa, Department of Sanitary Sewers, supply information which would provide justification for continued variance from the 1 mg/l effluent limitations of phosphorous for the Hookers Point AWWTP. It was also requested that long-term water quality trends in Hillsborough Bay and Tampa Bay be documented in support of the phosphorous variance.

Gps Measurements Of Regional Deformation In Southern California: Some Constraints On Performance, Timothy H. Dixon, G. Blewitt, K. Larson, D. Agnew, B. Hager, P. Kroger, L. Krumega, W. Strange

School of Geosciences Faculty and Staff Publications

Geodetic measurements are an important tool for understanding plate boundary zone deformation. They provide data on fault motion rates and indirectly provide constraints on crustal rheology, earthquake processes, and evolution of geologic structures. In southern California the pattern of strain resulting from interaction of the Pacific and North American plates is very complex, and a robust geodetic experiment requires dense spatial sampling. In addition, the signals of interest may have strain rates smaller than 10⁻⁷/yr. Taken together, these conditions imply the need for geodetic techniques that are both economical, enabling large numbers of measurements, and highly accurate. Conventional …

Compliance Monitoring And Long-Term Water Quality And Biological Indicator Trends In Hillsborough Bay Initial Report, City Of Tampa Department Of Sanitary Sewers

Reports

This is the second 1990 report to FDER to satisfy the requirements set forth in specific condition #6 of FDER construction permit DC29-152790. This report includes trend analyses of water quality parameters and biological indicators of water quality collected by us, and the Hillsborough County Environmental Protection Commission (HCEPC).

A Final Feasibility Report Submitted To Sylvan Lake Improvement Association, Inc, Thomas Crisman

School of Geosciences Faculty and Staff Publications

No abstract provided.

A Study For The Improvement, Restoration, And Protection Of Lake Bruce, Fulton And Pulaski Counties Indiana, William B. Eviston, Thomas Crisman, Eric P. Ellingson

School of Geosciences Faculty and Staff Publications

No abstract provided.

The Effect Of Tracking Network Configuration On Gps Baseline Estimates For The Casa Uno Experiment, S. Kornreich Wolf, Timothy H. Dixon, J. T. Freymuller

School of Geosciences Faculty and Staff Publications

Geodetic monitoring of subduction of the Nazca and Cocos plates is a goal of the CASA (Central and South America) Global Positioning System (GPS) experiments, and requires measurement of intersite distances (baselines) in excess of 500 km. The major error source in these measurements is the uncertainty in the position of the GPS satellites at the time of observation. A key aspect of the first CASA experiment, CASA Uno, was the initiation of a global network of tracking stations to minimize these errors. We studied the effect of using various subsets of this global tracking network on long (>100 …

Comment On “Timing Of Mantle Upwelling: Evidence For A Passive Origin For The Red Sea Rift” By A. V. Mcguire And R. G. Bohannon, Timothy H. Dixon

School of Geosciences Faculty and Staff Publications

No abstract provided.

Central And South America Gps Geodesy - Casa Uno, James N. Kellog, Tim Dixon

School of Geosciences Faculty and Staff Publications

In January 1988, scientists from over 25 organizations in 13 countries and territories cooperated in the largest Global Positioning System (GPS) campaign in the world to date (Table 1). 43 GPS receivers collected approximately 590 station-days of data in American Samoa, Australia, Canada, Colombia, Costa Rica, Ecuador, New Zealand, Norway, Panama, Sweden, United States, West Germany, and Venezuela. The experiment was entitled CASA UNO, an acronym for Central and South America – and uno is the Spanish word for one, designating first epoch measurements. The CASA UNO experiment was the first civilian effort implementing a global GPS satellite tracking network. …

Seagrass And Caulerpa Monitoring In Hillsborough Bay Initial Report, City Of Tampa Department Of Sanitary Sewers

Reports

The City of Tampa, Bay Study Group (BSG), has monitored the effects of sewage pollution abatement in Hillsborough Bay since 1976. Within the last decade, water quality improvements and evidence of minor seagrass revegetation in Hillsborough Bay prompted the BSG to initiate a seagrass study to compliment other programs assessing the environmental status of Hillsborough Bay.

Some Tests Of Wet Tropospheric Calibration For The Casa Uno Global Positioning System Experiment, Timothy H. Dixon, S. Kornreich Wolf

School of Geosciences Faculty and Staff Publications

Wet tropospheric path delay can be a major error source for Global Positioning System (GPS) geodetic experiments. We investigate strategies for minimizing this error using data from CASA Uno, the first major GPS experiment in Central and South America, where wet path delays may be both high and variable. We compared wet path delay calibration using water vapor radiometers (WVRs) and residual delay estimation, with strategies where the entire wet path delay is estimated stochastically without prior calibration, using data from a 270 km test baseline in Costa Rica. Both approaches yield centimeter-level baseline repeatability and similar tropospheric estimates, suggesting …

First Gps Baseline Results From The North Andes, James N. Knellogg, Jeffrey T. Freymuller, Timothy H. Dixon, Ruth E. Neilan, Ropain U. Clemente, M. Camargo Sergio, Fernandez Ch. Benjamin, James L. Stowell, Anibal Salazai, Mora V. Jaime, Luis Espin, Vernon Perdue, Leonard Leos

School of Geosciences Faculty and Staff Publications

The CASA UNO GPS (Global Positioning System) experiment (January-February 1988) has provided the first epoch baseline measurements for the study of plate motions and crustal deformation in and around the North Andes. Two dimensional horizontal baseline repeatabilities are as good as 5 parts in 10⁸ for short baselines (100–1000 km), and better than 3 parts in 10⁸ for long baselines (>1000 km). Vertical repeatabilities are typically 4–6 cm, with a weak dependence on baseline length. The expected rate of plate convergence across the Colombia Trench is 6–8 cm/yr, which should be detectable by the repeat experiment planned …

Draft- Nitrogen Loading And Ambient Chlorophyll-A In Hillsborough Bay (Tampa Bay), Florida: An Eutrophication Management Strategy, J.O. R. Johansson

Reports

The present report examines the past and current relationship between nitrogen loadings and ambient chlorophyll-a eutrophic subdivision of Tampa Bay (Task 1). A management strategy for eutrophication abatement, involving the reduction of present nitrogen loadings to levels which will sustain the desirable chlorophyll-a concentration and support persistent seagrass growth in the near future, is also presented for Hillsborough Bay (Task 3). The urgent need for a comprehensive long-term water quality and loading source monitoring program, specifically for Hillsborough Bay, is also discussed (Task 4).

A Study For The Improvement, Restoration, And Protection Of Mill Pond, William B. Eviston, Thomas Crisman, Eric P. Ellingson

School of Geosciences Faculty and Staff Publications

No abstract provided.

1990 File Geodatabase Containing Photo Point Locations, Aerial Photos, And Flight Maps, City Of Tampa Department Of Sanitary Sewers Bay Study Group, Pete Reehling, Richard Mckenzie

Data Sets

The Bay Study Group was created by the City of Tampa in 1976 to monitor the effects of pollution abatement that occurred in Hillsborough Bay when the city’s wastewater treatment plant was upgraded from primary to advanced treatment in 1979. The Bay Study Group documented a remarkable restoration of water quality parameters and biological indicators in Hillsborough Bay from the mid 1980s until 2009, when it was disbanded. This zip Geodatabase file contains the photo point locations, aerial photos, and flight maps for the year 1990.