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  • Limnology  (25)
  • fisheries  (14)
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  • Gainesville, FL  (39)
  • 2020-2022  (39)
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  • 2020-2022  (39)
  • 1970-1974
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  • 1
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    Perspective on an artificial habitat program for fishes of the Cuban Shelf (2021)
    Institute of Oceanology, Havana, Cuba | Gainesville, FL
    In:  http://aquaticcommons.org/id/eprint/417 | 3 | 2020-08-24 02:47:45 | 417 | Florida Sea Grant College Program
    Details
    Publication Date: 2021-06-29
    Description: A brief analysis of the bsics of artificial reefs as well as the methods and techniques in use are provided. The need for clear objectives and the design of artificial reefs for long-term goals is emphasized. Several principles are established. First, artificial reefs must target the enhancement of biological and fishery production of the Cuban shelf. This principle introduces major changes in current concepts, which are bsed exclusively on the increase of catch per unit effort. Second, an adequate balance between fishing effort, refuge capacity, food availability and fish recruitment must be established. Therefore, the use of artificial reefs siwth many cavities as habitats for algae, invertebreates and fishes, in place of artificial reefs exclusively employed as fish aggregators, is discussed. A methodology for a national development program, including the materials, structures, reef configurations, quantities, and distributions is proposed. As a result of examinations of habitats on the four sections of the Cubman shelf, an area of 12,500 sq.km. is defined as adequate for artificial reefs and isolated refuges. Eight-hundred and fifty reefs, each one formed by 200 refuges, are proposed. The use of artificial reefs for recreational fisheries is recommended for Cuba.(English & Spanish editions, 46 pgs in each edition; full text searching unavailable)
    Description: Translated by Georgina Bustamante and Keyon Lindeman.
    Keywords: Fisheries ; Biology ; Engineering ; Cuban shelf ; fisheries ; artifical reefs ; Cuba ; habitats artificiales ; plataforma cubana
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  • 2
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    Analysis of Hydrologic Data for the White River Basin (2021)
    University of Florida, Florida Cooperative Fish and Wildlife Research Unit | Gainesville, FL
    In:  http://aquaticcommons.org/id/eprint/1001 | 3 | 2011-09-29 21:17:28 | 1001 | Florida Cooperative Fish and Wildlife Research Unit
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    Publication Date: 2021-07-05
    Description: The value of the natural resources of the White River Basin (Basin), AR isrecognized by the area's designation as a "Wetland of International Importance". TheBasin constitutes one of the Nation's largest remaining intact forested wetlandlandscapes, second only to the Atchafalya Basin. It supports the North Americancontinent's largest concentration of over-wintering mallard ducks, a world-class troutfishery, the last vestige of a big river fishery remaining in the Mississippi River Basin,and numerous threatened and endangered species. The continued viability of thiswetland ecosystem depends on the suitability of the hydrologic environment to theresident flora and fauna. Numerous modifications of the Basin hydrologic features in thepast century have seriously impaired the sustainability of these resources. The Basinwidealterations of hydrologic processes (e.g., impoundment and regulatory releases offlows and volumes in the upper reaches, navigational modifications of lower reaches, andconsumptive demands for agricultural use throughout) have affected the hydrology of thesystem profoundly. The result is highly regulated flows and stages, vastly alteredhydrologic patterns, over-stabilized water levels, and disruption of seasonal waterdistribution patterns. Given the critical nature of hydrology in regulating the structureand function of wetland ecosystems, the impacts have been devastating, particularly tothe critical bottomland hardwoods that support the Basin's fish and wildlife resources.To date these piece-meal, system-wide, hydrologic alterations have cornmutativelydegraded the habitat value of this resource for fish and wildlife in the Basin, and havelead to changes in their numbers and distributions. In spite of the enormous stakesinvolved, there has been no comprehensive characterization of the Basin hydrology.System alterations such as channel deepening, dam construction, water allocationplans, and flood control measures are currently pending. These projects will potentiallyhrther modify the hydrologic environments of the Basin, and no doubt require mitigationmeasures. In addition, there is genuine interest in restoring aspects of the Basin's historichydrologic regime within some set of reasonable limits. In order to proceed with thiseffort, the anticipated effects of these modifications and restorations on the Basin ecologyrequire thorough study of the area's historic hydrology, so that connectivity among Basinprecipitation patterns, flow fluctuations, and land use changes can be made. A basinhydrologic characterization is an initial component of this effort. The focus of this effortwas to determine and assemble the data set from which characterization of the hydrologicenvironments of the Basin using historic and recent water level, flow, (primarily byUSGS-WRD) at locations throughout the Basin could proceed. ( Document has 11 pages.)
    Description: Research Work Order no. 203
    Keywords: Conservation ; Biology ; Limnology ; Environment ; Policies ; White River Basin ; Arkansas ; hydrology ; species
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    Spatial and Temporal Changes in Tree Islands of the Arthur R. Marshall Loxahatchee National Wildlife Refuge in Response to Altered Hydrologies (2021)
    Florida Cooperative Fish and Wildlife Research Unit, University of Florida | Gainesville, FL
    In:  http://aquaticcommons.org/id/eprint/1063 | 3 | 2011-09-29 21:12:04 | 1063 | Florida Cooperative Fish and Wildlife Research Unit
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    Publication Date: 2021-07-05
    Description: Loxahatchee can be grouped into three zones according to the patterns of change of treeislands observed from 1950 to 1991. 1 ) the edge ofthe refuge adjacent to the canals, 2) the eastern interiorof the refuge, and 3) the western interior ofthe refuge. The general trend is for tree islandsAlong the edge of the refuge to have decreased insize, number, and percent cover, while those on theinterior increased in size, nunber, and percentcover.Results from this study illustrate the importanceof flow magnitude as well as hydroperiodand depth in stucturing patterns of tree islandswithin this peat wetland. Restoration of historichydroperiods and depths without historic flow patternsmay not be sufficient to restore or maintainthe historic pattern and function of the system. (60 pages)
    Keywords: Conservation ; Biology ; Limnology ; Arthur R. Marshall Loxahatchee National Wildlife Refuge ; Florida ; hydrology ; tree islands ; water regimes
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  • 4
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    Multimodeling Basis for Across-Trophic-Level Ecosystem Modeling: the Florida Everglades Example (2021)
    Gainesville, FL
    In:  http://aquaticcommons.org/id/eprint/1071 | 3 | 2011-09-29 21:11:25 | 1071 | Florida Cooperative Fish and Wildlife Research Unit
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    Publication Date: 2021-07-05
    Description: We present a new modeling method for use in large-scale physical systems, such as the Everglades ecosystem.The current work that has been done in the ATLSS (Across-Trophic-Level System Simulation) project-whichfocuses on simulating key Everglades system components-relies on code integration. While this represents anecessary first step in analyzing the dynamics of species within the Everglades, it falls short of true modelintegration. We have constructed a methodology called object-oriented physical modeling (OOPM), which allowsa comprehensive knowledge representation to be constructedfor large-scale systems. OOPM enforces theidea that an implementation ofcomputer code can be accomplished in an incremental fashion by starting with aconceptual model and progressing to more detailed models. During this evolutionary procedure, a minimal amountof code is written, since the emphasis is on developing the conceptual model so that it not only represents theintuitive aspects ofthe model, but is also executable. OOPM provides a kind of "blueprint" for ecologists, biologistsand hydrologists to communicate and integrate models effectively. (14 page document)
    Keywords: Conservation ; Management ; Engineering ; Limnology ; Everglades ; Florida ; ecosystem ; modeling ; ATLSS (Across-Trophic-Level System Simulation) ; restoration
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  • 5
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    Evaluation the ecological role of alligator holes in the Everglades landscape (2021)
    Department of Wildlife Ecology and Conservation, Everglades Research and Education Center, University of Florida | Gainesville, FL
    In:  http://aquaticcommons.org/id/eprint/1117 | 3 | 2011-09-29 21:06:20 | 1117 | Florida Cooperative Fish and Wildlife Research Unit
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    Publication Date: 2021-07-05
    Description: The purpose of this project was to conduct a pilot project to determine the feasibility ofperforming a study to evaluate the ecological role of alligator holes in the Everglades system andto develop interagency support and a scope of work for future studies. The objectives for the firstyear were to: 1. Review existing information on the ecology of alligator holes and conduct a survey oncurrent complimentary studies.2. Conduct an ecological survey. including mapping and description. of existing alligatorholes.3. Establish interagency cooperation and support for an Alligator Hole Project. Based onthis interagency consultation develop a consensus for priorities for future research andintegration into ecosystem restoration efforts.(96 page document)
    Description: Final annual report for year 1. Submitted to: Everglades Agricultural Area Environmental Protection District
    Keywords: Biology ; Limnology ; alligator holes ; Everglades ; Florida
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  • 6
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    Ecology of aquaculture species and enhancement of stocks: proceedings of the thirtieth U.S. - Japan meeting on aquaculture, Sarasota, FL, Dec. 3-4, 2001 (2021)
    Florida Sea Grant College Program | Gainesville, FL
    In:  http://aquaticcommons.org/id/eprint/2061 | 3 | 2011-09-29 19:44:56 | 2061 | Florida Sea Grant College Program
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    Publication Date: 2021-07-11
    Description: CONTENTS:I. U.S.-Japan CooperationOpen Ocean Aquaculture – A Venue for Cooperative Research Between the United States and Japan.............................................................................. 1C. HelsleyII. Growth, Nutrition and Genetic DiversityDaily Ration of Hatchery-Reared Japanese Flounder Paralichthys olivaceus as an Indicator of Release Place, Time and Fry Quality. In situ Direct Estimation and Possibility of New Methods by Stable Isotope............................ 7O. Tominaga, T. Seikai, T. Tsusaki, Y. Hondo, N. Murakami, K. Nogami, Y. Tanaka and M. TanakaNucleic Acids and Protein Content as a Measure to Evaluate the Nutritional Condition of Japanese Flounder Paralichthys olivaceus Larvae and Juveniles........................................................................................................ 25W. GwakGenetic Diversity Within and Between Hatchery Strains of Flounder Paralichthys olivaceus Assessed by Means of Microsatellite and Mitochondrial DNA Sequencing Analysis...................................................................... 43M. Sekino, M. Hara and N. TaniguchiTracking Released Japanese Flounder Paralichthys olivaceus by Mitochondrial DNA Sequencing................................................................................ 51T. FujiiPreliminary Aspects of Genetic Management for Pacific Threadfin Polydactylus sexfilis Stock Enhancement Research in Hawaii........................................ 55M. Tringali, D. Ziemann and K. StuckEnhancement of Pacific Threadfin Polydactylus sexfilis in Hawaii: Interactions Between Aquaculture and Fisheries............................................................. 75D. ZiemannAquaculture and Genetic Structure in the Japanese Eel Anguilla japonica..................... 87M. Katoh and M. KobayashiComparative Diets and Growth of Two Scombrid Species, Chub Mackerel Scomber japonicus and Japanese Spanish Mackerel Scomberomorus niphonius, in the Central Seto Inland Sea, Japan.................................. 93J. Shoji, M. Tanaka and Tsutomu Maehara iiiEvaluating Stock Enhancement Strategies: A Multi-disciplinary Approach................... 105T. M. Bert, R.H. McMichael, Jr., R.P. Cody, A. B. Forstchen, W. G. Halstead, K. M. Leber, J. O’Hop, C. L. Neidig, J. M. Ransier, M. D. Tringali, B. L. Winner and F. S. KennedyIII. Physiological and Ecological ApplicationsPredation on Juvenile Chum Salmon Oncorhynchus keta by Fishes and Birds in Rivers and Coastal Oceanic Waters of Japan................................... 127K. Nagasawa and H. KawamuraInteraction Between Cleaner and Host: The Black Porgy Cleaning Behavior of Juvenile Sharpnose Tigerfish Rhyncopelates Oxyrhynchus in the Seto Inland Sea, Western Japan............................................................................. 139T. Shigeta, H. Usuki and K. GushimaIV. Case StudiesAlaska Salmon Enhancement: A Successful Program for Hatchery and Wild Stocks............................................................................................... 149W. HeardNMFS Involvement with Stock Enhancement as a Management Tool........................... 171T. McIlwainStock Enhancement Research with Anadromous and Marine Fishes in South Carolina...................................................................................... 175T. I. J. Smith, W. E. Jenkins, M. R. Denson and M. R. CollinsComparison of Some Developmental, Nutritional, Behavioral and Health Factors Relevant to Stocking of Striped Mullet, (Mugilidae), Sheepshead (Sparidae), Common Snook (Centropomidae) and Nassau Groupers (Serranidae)........................... 191J. W. Tucker Jr. and S. B. KennedyParticipants in the Thirtieth U.S.-Japan Meeting on Aquaculture................. Inside Back Coveriv (PDF has 204 pages.)
    Description: Correct citation of this Report is: Nakamura, Y., J.P. McVey, K. Leber, C. Neidig, S. Fox, and K. Churchill, (eds.). 2003. Ecology of Aquaculture Species and Enhancement of Stocks. Proceedings of the Thirtieth U.S. – Japan Meeting on Aquaculture. Sarasota, Florida, 3-4 December. UJNR Technical Report No. 30. Sarasota, FL: Mote Marine Laboratory. Series: Mote Marine Laboratory Technical Report No. 883
    Keywords: Management ; Fisheries ; Aquaculture ; aquaculture ; conferences ; United States ; Japan ; fisheries ; fish stocks
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  • 7
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    Enhancing Seed Availability For the Hard Clam (Mercenaria mercenaria) Aquaculture Industry By Applying Remote Setting Techniques (2021)
    Florida Sea Grant College Program | Gainesville, FL
    In:  http://aquaticcommons.org/id/eprint/2060 | 3 | 2011-09-29 19:44:34 | 2060 | Florida Sea Grant College Program
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    Publication Date: 2021-07-11
    Description: The goal of this study was to test a technology that may help ensure a reliable and consistentsupply of high quality and inexpensive clam seed to growers, thus fostering an emergingaquaculture industry by eliminating a seed shortage that limits sustainability. The overallobjectives were to develop, test and demonstrate technical procedures and determine thefinancial feasibility of transferring remote setting technology from the Pacific Northwestmolluscan shellfish industry to the hard clam aquaculture industry in Florida. (PDF has 44 pages.)
    Keywords: Management ; Fisheries ; Aquaculture ; Florida ; hard clam ; Mercenaria mercenaria ; seeding ; fisheries ; aquaculture
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  • 8
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    Productivity of Florida Springs: first semi-annual report to Biology Division, Office of Naval Research, progress from June 1, 1952 to January 31, 1953 (2021)
    University of Florida, College of Arts and Sciences, Department of Biology | Gainesville, FL
    In:  http://aquaticcommons.org/id/eprint/369 | 3 | 2011-09-29 22:09:52 | 369
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    Publication Date: 2021-06-29
    Description: Work has begun on studying the factors responsible for productivityin the Florida springs, which are nearly constant temperature, constantchemical, steady state giant laboratories. Progress has been made on fiveaspects: qualitative description, quantitative description, completionof knowledge of chemical factors, measurement of productivity , developmentof productivity theory.Measurement of the primary productivity in Silver Springs and GreenCove Springs by two new methods: the raising of organisms in cages, and themeasurement of night & day differences in oxygen downstream agree roughly.Production in these springs is greater than previous production figures reportedfor marine, fresh water, and land areas. Instantaneous measures of production show large variations with season, time of day, cloud cover. Productionestimates range from 11,000 lbs per acre per year to 70,000 lbs. glucose peracre per year during daylight hours.Essential stability of the springs environment has been shown withrespect to temperature, phosphorus, and plant cover. A correlation of speciesnumber with lack of stability has been shown with insects. Quantitativestudies have shown very large plant base to pyramids of mass. Correlationof marine invasion with chlorinity has been shown. The essential aspects ofpH regulated phosphorus geochemistry in Florida have been outlined. Sometheoretical ideas on productivity have been evolved. Mapping of sessileorganisms in springs and taxonomic identification of dominants are halfcompleted. Plans for second six months include measurement of herbivoreand carnivore production rates and completion of food chain efficiencydeterminations in Silver Springs as a preparation for subsequentcomparisons between springs. (34pp.)
    Keywords: Ecology ; Limnology ; springs ; Florida ; productivity
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  • 9
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    Productivity of Florida Springs: third annual report to Biology Branch, Office of Naval Research progress from January 1 to December 31, 1955 (2021)
    University of Florida, Department of Biology | Gainesville, FL
    In:  http://aquaticcommons.org/id/eprint/374 | 3 | 2011-09-29 22:09:16 | 374
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    Publication Date: 2021-06-29
    Description: The effect of productivity on species variety has been studied by countsof diatom species on glass slides at favorable and unfavorable stations withinSilver Springs. Species variety has been presented in a measure that is independentof sample size, "species per cycle". This measure is based on the linear increase of accumulated species with logarithmic increase of individuals counted, which has been found approximately true for many kinds of populations in many communities. Diatom productivity was measured by the rate of chlorophyll accumulation. The poor station accumulated diatoms and chlorophyll slowly and was characterized by a large species variety. There was little change after 79 days. The rich station accumulated diatoms and chlorophyll rapidly and was characterized by a small species variety that decreased for 93 days as the density of the population increased. These results indicated that species variet was decreased by conditions of high productivity possibly through the action of high densities and competition.Twelve new diurnal production curves were obtained including two more on Silver Springs and one each for 10 different Florida Springs. A shallow oligohaline spring possessed the highest productivity of 58.0 gm/m2/day; a shaded and anerobic spring possessed the lowest producvitiy of 0.66 gm /m2/day. Findings in further studies in Silver Springs indicated a two fold diurnal chlorophyll fluctuation in the pseudoplankton going downstream, photosynthetic quotients corresponding to carbohydrate production on winter or heavily clouded days, and higher quotients corresponding to protein production on sunny, summer days; evidences that bell jar estimates of respiration in flowing water communities lead to underestimates; recalculation of mean depth of plant beds leads to a 5% estimate of photosynthetic efficiency for Silver Springs (rather than 8%). Correlated with a 20% decrease in the discharge associated with widespread drought in 1954-55 the oxygen of the main boil dropped from 2.5 ppm to 1.7 ppm. A production measurement by the diurnal oxygen and carbon-dioxide curve method was made in a somewhat isolated "boat basin." Efficiency of production in this stationary, plankton containing water of Silver Springs origin was about 1%. Further evidence was obtained of nitrate increase in water flowing from anaerobic springs over blue-green algae. The area based chlorophyll of the benthic Silver Springs community was similar to that in forests and lakes of Europe. (63 pages)
    Keywords: Ecology ; Limnology ; diatoms ; Silver Springs ; Florida ; productivity
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  • 10
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    Harvest and identification of peeler crabs (2021)
    Florida Sea Grant College Program | Gainesville, FL
    In:  http://aquaticcommons.org/id/eprint/414 | 3 | 2020-08-24 02:47:18 | 414 | Florida Sea Grant College Program
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    Publication Date: 2021-06-29
    Description: Peeler crabs are simply hard shell blue crabs (Callinectes sapidus) that show signs of molting.The molting process, commercially called shedding, is when the hard shell is cast off and the new soft shellemerges. In the soft condition, the shell expands to a larger size before rehardening. Peeler crabs is the termgiven to blue crabs that are in a pre-molt stage. Identification of pre-molt crabs is the key to the success of softshell crab operations since prolonged time in a shedding facility increass the chance of mortality, requiresfeeding, decreases water quality and increases operating costs. (2pp.)
    Keywords: Fisheries ; Blue crabs ; Callinectes sapidus ; fisheries ; Florida
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  • 11
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    Since the net ban: changes in commercial fishing in Florida (2021)
    Florida Sea Grant College Program | Gainesville, FL
    In:  http://aquaticcommons.org/id/eprint/423 | 3 | 2020-08-24 02:48:22 | 423 | Florida Sea Grant College Program
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    Publication Date: 2021-06-29
    Description: In November 1994, Amendment Three of theFlorida Constitution, otherwise known as the netban, was approved by voter referendum. Thisamendment made it unlawful to use entangling nets(i.e., gill and trammel) in Florida's waters. The useof other forms of nets, such as seines, cast nets, andtrawls, was restricted, but not totally eliminated.The primary species of finfish landed with entanglingnets included striped mullet, spotted sea trout,Spanish mackerel, sheepshead, pompano and bluefish.About two dozen species tend to school inshallow water which made the use of gill and trammelnets an efficient harvesting method. This fact sheet indicates some of the measured changes that have occurred.(3pp.)
    Keywords: Fisheries ; net fishing ; Florida ; bans ; fisheries
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  • 12
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    Status of the Florida soft crab industry (2021)
    Florida Sea Grant College | Gainesville, FL
    In:  http://aquaticcommons.org/id/eprint/37 | 3 | 2021-02-27 20:04:39 | 37 | Florida Sea Grant College Program
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    Publication Date: 2021-06-25
    Description: Florida Sea Grant, having been involved in the developnent of the Florida soft crab fishery since 1978, decided that an evaluation of the status of this fishery was necessary to determine to what extent Sea GrantExtension activities would be needed to further its development. To that end, this author, in cooperation with Florida Sea Grant marine extension agents and specialists, conducted a survey of the 1983 soft crab producers.Out of 28 identified blue crab shedding operations known to be producing soft shell crabs in 1983, 22 (78.6%) cooperated in filling out a fishery questionnaire which included sections describing their shedding facility,harvest methods, product types, production and sales data, and production costs. The reminder of this paper will be the findings of that survey. (12pp.)
    Keywords: Management ; Fisheries ; Callinectes sapidus ; blue crabs ; fisheries ; Florida
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    Survival and growth of cut vs hooked commercial sponges in the Florida Keys (2021)
    Florida Sea Grant College | Gainesville, FL
    In:  http://aquaticcommons.org/id/eprint/38 | 3 | 2020-08-24 02:37:57 | 38 | Florida Sea Grant College Program
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    Publication Date: 2021-06-25
    Description: The present project was undertaken for the purpose ofestablishing whether a change in harvesting technique -- cutting rather than tearing the sponge loose-- could insure sponge regeneration and thus reducethe possibility of overfishing in the Florida Keys. (14pp.)
    Description: IR-82-15
    Keywords: Management ; Fisheries ; Environment ; Florida keys ; sponges ; fisheries ; sheepswool sponges ; Hippiospongia lachne
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  • 14
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    Bait shrimp fishery of Biscayne Bay (2021)
    Florida Sea Grant College | Gainesville, FL
    In:  http://aquaticcommons.org/id/eprint/32 | 3 | 2021-02-27 20:03:48 | 32 | Florida Sea Grant College Program
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    Publication Date: 2021-06-25
    Description: A small but valuable live bait shrimp fishery has existed in Biscayne Bay since at least the early 1950s. In recent years there has been increasing pressure from recreational fishing and environmental groups to eliminate this fishery from the Bay because the fishing activity is generally thought to be deleterious to the environment and/or destructive to juvenile game fish.This study was initiated to update the existing knowledge of the bait shrimp fishery in Biscayne Bay and document historical trends in number of participants, fishingmethods, fishing area, seasonality, total catch, catch-per-unit-effort, disposition of the catch, and economics of the industry. (21pp.)
    Keywords: Management ; Fisheries ; shrimp ; fisheries ; bait ; Biscayne Bay ; Florida
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  • 15
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    Selected economics research needs of the Gulf and South Atlantic shrimp industry: a workshop (2021)
    Florida Sea Grant College | Gainesville, FL
    In:  http://aquaticcommons.org/id/eprint/40 | 3 | 2021-02-27 20:05:17 | 40 | Florida Sea Grant College Program
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    Publication Date: 2021-06-25
    Description: The major research needs concerning the domestic shrimp industry were addressed at a 1985 workshop. These needs included: (1) The impact of the development of foreign shrimp mariculture on the various sectors (production, processing, wholesaling, etc.) of the domestic shrimp industry,(2) The impact of future development of seafood-based analogs and Surimi on the domestic shrimp industry, and(3) The status of and problems associated with the development and improvement of econometric and bio-economic modeling efforts concerning the domestic shrimp industry. (51pp.)
    Description: SGEP - 8
    Keywords: Management ; Fisheries ; Aquaculture ; shrimp ; fisheries ; Gulf of Mexico ; South Atlantic ; mariculture
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  • 16
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    Program and abstracts for the 11th annual Tropical and Subtropical Fisheries Technological Conference of the Americas, January 13 - 16, 1986, Holiday Inn, International Airport, Tampa, Florida (2021)
    University of Florida, Department of Food Science and Human Nutrition | Gainesville, FL
    In:  http://aquaticcommons.org/id/eprint/42 | 3 | 2021-02-27 20:06:28 | 42 | Florida Sea Grant College Program
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    Publication Date: 2021-06-25
    Description: The Tropical and Subtropical Fisheries Technological Society of the Americas is a professional , educational association of fishery techno1ogists interested in the application of science to the unique problems of production, processing, packaging, distribution and utilization of tropical and subtropicalfishery species.Individual abstracts edited by the authors of the abstracts. Some abstracts have been excluded by author request. (26pp.)
    Keywords: Management ; Fisheries ; tropical ; subtropical ; fisheries ; management
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  • 17
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    Fine sediment erodibility in Lake Okeechobee, Florida (2021)
    University of Florida Coastal and Oceanographic Engineering Department | Gainesville, FL
    In:  http://aquaticcommons.org/id/eprint/127 | 3 | 2020-08-24 02:53:49 | 127 | Oceanographic Engineering Program, Department of Civil and Coastal Engineering, University of Florida
    Details
    Publication Date: 2021-06-26
    Description: The critical need to predict the turbidity in water due to fine-grained sediment suspensionunder wave action over mud deposits for sedimentation and erosion studies, as well assorbed contaminant transport, is well known. Since fall velocities of fine sediment particlesare very small, they can be easily transported by hydrodynamic flows such as waves andcurrents. The presence of these particles in the water column affects accoustic transmission,heat absorption and depth of the eutrophic zone (Luettich et al., 1989). Because these sedimentsalso have a strong affinity for sorbing nutrients and toxic chemicals, sediments whichhave been deposited on the bottom may function as a source of contaminants to the watercolumn if they are disturbed by eroding forces resulting, for instance, from wave action. Anoutstanding example of a water body for these problems is Lake Okeechobee, the largestshallow lake in Florida. This lake shows typical signs of artificial eutrophication mainly dueto increased phosphorus loading associated with the surrounding region. Resuspension of sediment at the bottom of Lake Okeechobee composed of fine-grainedmaterial has been examined. A sediment transport model was used to simulate likelytrends in the evolution of the vertical suspended sediment concentration profile resultingfrom wave action, and the corresponding eroded bed depth was calculated through massbalance. Requisite information on characteristic parameters and relationships related tofine sediment erodibility were derived from field sampling of bottom sediment in the lake,and through laboratory experiments using this sediment and lake water. (161pp.)
    Description: South Florida Water Management District
    Keywords: Engineering ; Limnology ; Environment ; Chemistry ; Erosion ; Fine sediment ; Lake mud ; Lake Okeechobee
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    Fishery recruitment in Florida Waters: toward a predictive capability (Report of a Workshop Held February 15-17, 1989, Live Oak, Florida) (2021)
    Florida Sea Grant College | Gainesville, FL
    In:  http://aquaticcommons.org/id/eprint/168 | 3 | 2020-08-24 02:41:39 | 168 | Florida Sea Grant College Program
    Details
    Publication Date: 2021-06-26
    Description: Marine fisheries in Florida encompass 109 finfishes andinvertebrate species, reflecting the state's diversity of coastaland ocean habitats. Management of Florida's valuable fisheriesnecessarily entails forecasting fluctuations in fished stocks.By understanding recruitment, the processes that result in thesurvival of fishes from early life history to the adult or exploitedstage, management potential can be improved. Respondingto an interest in recruitment expressed by Florida's academicscientists, the Florida Sea Grant College Program, in conjunctionwith the Florida Chapter of the American Fisheries Society,organized the workshop at Live Oak to determine the usefulness ofunderstanding recruitment, the likelihood of success and themechanism for proceeding.The document represents the collectivewisdom of many of Florida's leading scientists. It is designedto provide guidance for strategic planning in future fisheryresearch and management activities. (69pp. Keppel and Seaman (eds)
    Description: Report of a Workshop Held February 15-17, 1989 Live Oak, Florida. Sponsored by Florida Sea Grant College Program and Florida Chapter of the American Fisheries Society
    Keywords: Management ; Fisheries ; Florida ; fisheries ; recruitment
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    Geryonid crabs and associated continental slope fauna: a research workshop report (2021)
    Florida Sea Grant College | Gainesville, FL
    In:  http://aquaticcommons.org/id/eprint/167 | 3 | 2021-02-27 20:08:17 | 167 | Florida Sea Grant College Program
    Details
    Publication Date: 2021-06-26
    Description: Considerable research in recent years has been invested inthe basic biology, ecology, and fisheries of deep-water crabs,Family Geryonidae. These efforts have been concentrated off thesoutheastern United States and southwest Africa, following earlierwork from the Mid-Atlantic states of the U.S. to the CanadianMaritime Provinces. Species of primary interest have been thegolden crab, Chaceon fenneri, and the red crabs C. maritae and C.auinauedens. Only a fraction of recent data has been published.Yet, the many investigators and sponsoring agencies sought tofoster regional comparisons, to inform the commercial fishingindustry and resource agencies, and tp provide guidance for futureresearch investments.On January 19 and 20, 1989, an invited panel of scientists,fishermen, and Sea Grant Extension faculty met in Tampa, Floridato share their results, conclusions, and latest hypotheses. Thisreport, as a summary of workshop presentations and discussions, issimply a vehicle by which that expertise can be delivered to abroader audience. (73pp.) (Lindberg and Wenner (eds)
    Description: Sea Grant Project No. R/LR-B-17
    Description: NOAA National Undersea Research Center, University of North Carolina at Wilmington
    Keywords: Ecology ; Fisheries ; Biology ; Geryonidae ; Golden crab ; Chaceon fenneri ; Red crab ; Chaceon quinquedens ; fisheries ; ecology
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    Actual and potential tourist reaction to adverse changes in recreational coastal beaches and fisheries in Florida (2021)
    Florida State University, Department of Economics | Gainesville, FL
    In:  http://aquaticcommons.org/id/eprint/180 | 3 | 2020-08-24 02:42:24 | 180 | Florida Sea Grant College Program
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    Publication Date: 2021-06-27
    Description: This report summarizes the results of a researchproject to determine the role of resource scarcity, if any,in influencing tourism to Florida. The project was designedto test the hypothesis that selected natural resourcessupply constraints (e.g., saltwater fisheries and beaches)in Florida's coastal zone, will moderate the projectedgrowth in tourism. (PDF contains 100 pages)
    Description: Florida Sea Grant College Program
    Description: Florida Sea Grant College Program Project Number R/C - P - 16 Grant Number NA 89 AA-D-5
    Keywords: Conservation ; Management ; Sociology ; tourism ; Florida ; coasts ; beaches ; fisheries
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    Legal and policy options to minimize adverse effects of mosquito control pesticides on Florida's saltwater fisheries (2021)
    Florida Sea Grant College | Gainesville, FL
    In:  http://aquaticcommons.org/id/eprint/213 | 3 | 2020-08-24 02:43:44 | 213 | Florida Sea Grant College Program
    Details
    Publication Date: 2021-06-27
    Description: This report examines the regulation of mosquito control activities in Florida and makeslegal and institutional recommendations to improve protection of non-target estuarine and marineorganisms.Some of the more important recommendations for modification of mosquito control inFlorida include: clarification of ambiguous mosquito control pesticide labels; strengthening ofsurveillance and reporting requirements; strengthening of enforcement efforts and authority;increased use of Integrated Pest Management techniques; development of alternatives topesticides; increased research to assess the effects of pesticides on non-target organisms;increased funding, particularly for public education, research, and enforcement; utilization ofadministrative and judicial remedies if warranted; and public education. (132pp.)
    Description: Florida Department of Natural Resources
    Description: Project Number R/FDNR-3A, Florida Department of Natural Resources
    Keywords: Pollution ; Fisheries ; Biology ; Environment ; Policies ; mosquito control ; Florida ; regulations ; non-target organisms ; fisheries ; pollution
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    Habitat Use by Migratroy Shorebirds at the Cabo Rojo Salt Flats, Puerto Rico (2021)
    Florida Cooperative Fish and Wildlife Research Unit , University of Florida | Gainesville, FL
    In:  http://aquaticcommons.org/id/eprint/1077 | 3 | 2011-09-29 21:11:52 | 1077 | Florida Cooperative Fish and Wildlife Research Unit
    Details
    Publication Date: 2021-07-05
    Description: The Cabo Rojo Salt Flats, at the southwestern tip ofPuerto Rico, provide important autumn stopover and winteringhabitat for migratory shorebirds. I studied the abundanceand distribution of shorebirds and their food resources atthis site during autumn of 1990 and 1991.Small calidrids (primarily Calidris pusilla and C.mauri) were the most abundant shorebirds at the salt flats.The maximum weekly counts of small calidrids in 1990 (2,690)and 1991 (3,532) occurred in mid October. Calidrids foragedprimarily in the Fraternidad lagoon system; roosting tookplace most often at the neighboring Candelaria Lagoon.The macroinvertebrate prey important to calidrids in theFraternidad system were Dasyhelea (Diptera), Trichocorixa(Hemiptera), and Artemia (Anostraca). Changes in invertebrateabundance coincided with fluctuations in salinity. (100 page document)
    Description: Research Work Order no. 78
    Keywords: Conservation ; Management ; Biology ; Limnology ; Shorebirds ; Cabo Rojo Salt Flats ; Puerto Rico ; migration ; Calidrids ; Candelaria Lagoon
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    Factors affecting breeding status of wading birds in the Everglades. (2021)
    Florida Cooperative Fish and Wildlife Research Unit , University of Florida | Gainesville, FL
    In:  http://aquaticcommons.org/id/eprint/1079 | 3 | 2011-09-29 21:09:38 | 1079 | Florida Cooperative Fish and Wildlife Research Unit
    Details
    Publication Date: 2021-07-05
    Description: This goals of this research and monitoring effort are to document nesting effortand roughly categorize success of nesting by wading birds in the central Everglades ofFlorida, and to investigate the causes of nonbreeding in a high proportion of the adultwading birds in the ecosystem The latter goal has focused on breeding of White Ibises(Eudocimus albus) and has been approached through 1) understanding the nutritional,behavioral, and hormonal aspects of normal breeding in a captive colony ofScarlet Ibises(considered conspecific to White Ibises) in central Florida, and 2) comparing breeding andnonbreeding wild White Ibises in the Everglades, in their physiology, nutritional state,breeding phenology, contaminant load, and hormonal status. This report covers work onthis project between January and November, 2000. (81 page docoument)
    Description: Research Work Order no. 191
    Description: 2000 draft Final Annual Report to The U. S. Army Corps of Engineers Jacksonville, Florida
    Keywords: Conservation ; Management ; Biology ; Limnology ; Wading birds ; nesting success ; Everglades ; Water Conservation Area 1 ; Water Conservation Area 2 ; Water Conservation Area 3 ; Florida ; water levels ; Loxahatchee National Wildlife Refuge ; Northeast Shark Slough (NESS) ; White Ibis ; Eudocimus albus
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    Monitoring and Research on Wading Birds in the Water Conservation Areas ofthe Everglades: The 1996 Nesting season (2021)
    Florida Cooperative Fish and Wildlife Research Unit , University of Florida | Gainesville, FL
    In:  http://aquaticcommons.org/id/eprint/1075 | 3 | 2011-09-29 21:11:45 | 1075 | Florida Cooperative Fish and Wildlife Research Unit
    Details
    Publication Date: 2021-07-05
    Description: This project was initiated to continue monitoring reproductive responses of wadingbirds in the central Everglades, and to investigate two areas of research considered key tounderstanding and managing wading birds: nestling energetics, and factors affecting foodavailability. This report summarizes the first of two years of work. (101 page document)
    Description: Final Report to The U. S. Army Corps of Engineers Jacksonville, Florida
    Keywords: Conservation ; Management ; Biology ; Limnology ; Wading birds ; nesting success ; Everglades ; Water Conservation Area 1 ; Water Conservation Area 2 ; Water Conservation Area 3 ; Florida ; water levels ; Loxahatchee National Wildlife Refuge ; Northeast Shark Slough (NESS)
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    Wading Bird Nesting Success in the Water Conservation Areas of the Everglades, 1993 (2021)
    Florida Cooperative Fish and Wildlife Research Unit , University of Florida | Gainesville, FL
    In:  http://aquaticcommons.org/id/eprint/1073 | 3 | 2011-09-29 21:11:39 | 1073 | Florida Cooperative Fish and Wildlife Research Unit
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    Publication Date: 2021-07-05
    Description: This report documents breeding numbers, reproductive success, and foragingdispersion of long-legged wading birds in the Water Conservation Areas (WCAs) of theEverglades during the first six months of 1993. Briefly, the 1993 spring had abnormallyhigh water and windy conditions throughout the season, and produced poor nesting effort,low to moderate nesting success, and low production of young. Some species, like WoodStorks and White Ibises, did not nest at all in the WCAs. Others, like Great Egrets andTricolored Herons, showed considerably tenacity under the extremely poor nestingconditions. The 1993 season provided a rare chance to record the reproductive responses ofwading birds during sustained high water conditions. (108 page document)
    Description: Research Work Order no. 110
    Description: Final Report to The U. S. Army Corps of Engineers Jacksonville, Florida
    Keywords: Conservation ; Management ; Biology ; Limnology ; Wading birds ; nesting success ; Everglades ; Water Conservation Area 1 ; Water Conservation Area 2 ; Water Conservation Area 3 ; Florida ; water levels ; Loxahatchee National Wildlife Refuge ; Northeast Shark Slough (NESS)
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    Fish community structure in some naturally acid Florida lakes (2021)
    University of Florida, Department of Fisheries | Gainesville, FL
    In:  http://aquaticcommons.org/id/eprint/1084 | 3 | 2011-09-29 21:12:43 | 1084 | Florida Cooperative Fish and Wildlife Research Unit
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    Publication Date: 2021-07-05
    Description: This study investigated the status of fish communitiesin 12 naturally acid Florida lakes. The small, shallowlakes were located in the Ocala National Forest, the TrailRidge, and panhandle Florida; regions where lakes have lowacid neutralizing capacities and are considered sensitive tofurther acidification from anthropogenic sources.Fifteen species from seven families were capturedduring mark-recapture sampling. Warmouth (Lepomis gulosus)was the only cosmopolitan species in the study. Bluegill(Lepomis macrochirus) and largemouth bass (Micropterussalmoides), collected from 11 and 10 lakes, respectively,were also widely distributed species. Total fish abundanceand biomass were not related to lake pH or total alkalinity.(Document has 202 pages)
    Description: Research Work Order no. 73
    Description: PhD
    Description: This document was Cecil Jenning's Ph.D. dissertation submitted to the Department of Fisheries and Aquaculture, University of Florida.
    Keywords: Biology ; Limnology ; Chemistry ; lakes ; Florida ; fishes ; community ; water chemistry
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    Factors affecting breeding status of wading birds in the Everglades. (2021)
    Florida Cooperative Fish and Wildlife Research Unit , University of Florida | Gainesville, FL
    In:  http://aquaticcommons.org/id/eprint/1078 | 3 | 2011-09-29 21:11:55 | 1078 | Florida Cooperative Fish and Wildlife Research Unit
    Details
    Publication Date: 2021-07-05
    Description: This report summarizes work done during the 1998 field season on ResearchWork Order 188, for the U.S. Army Corps ofEngineers through the U.S. GeologicalService's Biological Resource Division's Florida Cooperative Research Unit.The goals ofthis work were to continue the monitoring of nesting by waterbirdsin the central and northern Everglades, and to initiate research aimed at understandingwhy a very large proportion ofthe adult wading birds in the Everglades do not initiatenesting in most years.Between January and July of 1998, we performed systematic aerial surveys ofWCAs 1, 2, and 3 ofthe central and northern Everglades in order to locate and documentbreeding colonies ofwading birds. In addition, we performed systematic ground surveysto serve as checks on the aerial work, and to document solitary nesting species, and darkcolored species not easily counted from the air. (88 page document)
    Description: Research Work Order no. 188
    Description: Final Report to The U. S. Army Corps of Engineers Jacksonville, Florida
    Keywords: Conservation ; Management ; Biology ; Limnology ; Wading birds ; nesting success ; Everglades ; Water Conservation Area 1 ; Water Conservation Area 2 ; Water Conservation Area 3 ; Florida ; water levels ; Loxahatchee National Wildlife Refuge ; Northeast Shark Slough (NESS)
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    Factors affecting breeding status of wading birds in the Everglades. (2021)
    Florida Cooperative Fish and Wildlife Research Unit , University of Florida | Gainesville, FL
    In:  http://aquaticcommons.org/id/eprint/1080 | 3 | 2011-09-29 21:09:44 | 1080 | Florida Cooperative Fish and Wildlife Research Unit
    Details
    Publication Date: 2021-07-05
    Description: This comprehensive final report summarizes the results of a four-year researchand monitoring effort (1998 - 2001) designed to document nesting effort and success bywading birds, and to investigate the reproductive physiology and ecology of White Ibises(Eudocimus albus) in the Everglades ecosystem. The monitoring of nesting has beenaccomplished bystandardized systematic aerial and ground surveys and study of nestingsuccess of nesting colonies in Water Conservation Areas (WCAs) 2 and 3 ofthe centralEverglades. The White Ibis work was accomplished through 1) investigation of thenutritional, behavioral, and hormonal aspects of "normal" breeding in a captive colony ofScarlet Ibises (Eudocimus ruber, considered by many to be the same species as the WhiteIbis), and 2) documenting the physiology, nutritional state, breeding phenology,contaminant load, and hormonal status of free- living adult White Ibises in the centralEverglades. (364 page document)
    Description: Research Work Order no. 191
    Description: 2001 final comprehensive report to The U. S. Army Corps of Engineers Jacksonville, Florida
    Keywords: Conservation ; Management ; Biology ; Limnology ; Wading birds ; nesting success ; Everglades ; Water Conservation Area 1 ; Water Conservation Area 2 ; Water Conservation Area 3 ; Florida ; water levels ; Loxahatchee National Wildlife Refuge ; Northeast Shark Slough (NESS) ; White Ibis ; Eudocimus albus
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    Chemical characteristics of Santa Fe River in relation to local geology (2021)
    Florida Cooperative Fish and Wildlife Research Unit, University of Florida | Gainesville, FL
    In:  http://aquaticcommons.org/id/eprint/1110 | 3 | 2011-09-29 21:07:12 | 1110 | Florida Cooperative Fish and Wildlife Research Unit
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    Publication Date: 2021-07-05
    Description: 79 page document.
    Description: Supported by: U.S. Department of the Interior Fish and Wildlife Service Contract No. 14-16-0009-80-038
    Keywords: Limnology ; Earth Sciences ; Santa Fe River ; Florida ; geology
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    Methodology to assess the value of Florida wetlands to fish and wildlife: an annotated bibliography (2021)
    Florida Cooperative Fish and Wildlife Research Unit, University of Florida | Gainesville, FL
    In:  http://aquaticcommons.org/id/eprint/1109 | 3 | 2011-09-29 21:08:03 | 1109 | Florida Cooperative Fish and Wildlife Research Unit
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    Publication Date: 2021-07-05
    Description: The following bibliography was compiled for use by the CooperativeFish and Wildlife Unit and their cooperators as an aid in determiningresearch priorities in Florida wetlands. Emphasis was placed on studiesdone on the economic value of wetlands, values to fish and wildlife, methodsof sampling in a wetland area, and restoration practices. Material wasgenerally gathered from studies done in the southeast, however, somerelevant national papers were also included. (35 page document)
    Description: Supported by: U.S. Department of the Interior Fish and Wildlife Service Contract No. 14-16-0009-80-038 November
    Keywords: Limnology ; Policies ; wetlands ; Florida ; values
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    The effects of the Suwannee River Sill on the hydrology and vegetation of Okefenokee Swamp (2021)
    Florida Cooperative FIsh and Wildlife Research Unit, University of Florida | Gainesville, FL
    In:  http://aquaticcommons.org/id/eprint/1111 | 3 | 2011-09-29 21:07:25 | 1111 | Florida Cooperative Fish and Wildlife Research Unit
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    Publication Date: 2021-07-05
    Description: The Suwannee River sill was constructed following extensive wildfires during1954-1955, with the intent of protecting the swamp and surrounding uplands from effectsof wildfires. During subsequent years, concern was raised that the dam might beadversely affecting the swamp ecology by extending periods of inundation, increasingwater depths, and subsequently affecting swamp vegetation. Delineating the effects ofthe Suwannee River sill on the swamp hydrologic environment and vegetationdistributions, in the process of exploring relationships among driving functions andlandscape responses, was a purpose of this research.(834 page document)
    Description: Supported by: U.S. Department of the Interior Fish and Wildlife Service Contract No. 14-16-0009-80-038 November
    Keywords: Limnology ; Policies ; Suwannee River sill ; Okefenokee Swamp ; wildfires ; Florida ; wetlands ; Georgia
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    Beach face dynamics as affected by ground water table elevations (2021)
    University of Florida. Department of Coastal and Oceanographic Engineering | Gainesville, FL
    In:  http://aquaticcommons.org/id/eprint/496 | 3 | 2020-08-24 03:02:24 | 496 | Oceanographic Engineering Program, Department of Civil and Coastal Engineering, University of Florida
    Details
    Publication Date: 2021-06-30
    Description: This report presents the results of laboratory studies which were carried out in the Coastaland Oceanographical Engineering Laboratory to investigate the effects of ground water tableelevations on the beach profile changes over the swash zone. The experiment was conducted atthree different water table levels while the other experimental conditions were fixed to constantvalues with regular waves. The water table levels included (1) normal water table level whichis the same as mean sea level, (2) a higher level and (3) a lower level than the mean sealevel. Special attention was given to the higher water level to investigate whether this levelenhances erosion of the beach face and also to methods of interpreting the experimental data.The experiment described herein was carried out with a fairly fine sand and has demonstratedthe significance of beach water table on profile dynamics. The increased water table levelcaused distinct effects in three definite zones. First, erosion occurred at the base of the beachface and the sand eroded was carried up and deposited on the upper portion of the beachface. Secondly, the bar trough deepened considerably and rapidly and the eroded sand wasdeposited immediately landward. This depositional area changed from mildly erosional tostrongly depositional. Third, the area seaward of the bar eroded with a substantial deepening.The lowered water table appeared to result in a much more stable beach and the resultingeffects were much less. The only noticeable trend was a limited deposition in the scour area atthe base of the beach face. (Document has 37 pages.)
    Keywords: Oceanography ; Limnology ; Engineering ; Earth Sciences ; Beach erosion ; ground water
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    Comparison of cattail (Typha sp.) occurrence on a photo-interpreted map versus a satellite data map (2021)
    Florida Cooperative FIsh and Wildlife Research Unit, University of Florida | Gainesville, FL
    In:  http://aquaticcommons.org/id/eprint/1116 | 3 | 2011-09-29 21:06:16 | 1116 | Florida Cooperative Fish and Wildlife Research Unit
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    Publication Date: 2021-07-05
    Description: A comparison between a 1985 photo-interpreted vegetation mapand a vegetation map made from classified 1987 satellite data ofthe Loxahatchee National Wildlife Refuge showed that 81% ofsamples taken in areas occupied by cattail (Typha sp.) on thephoto-interpreted map corresponded with cattail on the satellitedata map.(5 page document)
    Keywords: Biology ; Limnology ; Engineering ; Loxahatchee National Wildlife Refuge ; satellite imagery ; cattail ; Typha sp.
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    Two-dimensional finite-difference model for moving boundary hydrodynamic problems (2021)
    University of Florida, Department of Coastal and Oceanographic Engineering | Gainesville, FL
    In:  http://aquaticcommons.org/id/eprint/1069 | 3 | 2011-09-29 21:11:07 | 1069 | Oceanographic Engineering Program, Department of Civil and Coastal Engineering, University of Florida
    Details
    Publication Date: 2021-07-05
    Description: To predict the hydrodynamics of lakes, estuaries and shallow seas, a two 'dimensionalnumerical model is developed using the method of fractional steps. Thegoverning equations, i.e., the vertically integrated Navier-Stokes equations of fluidmotion, are solved through three steps: advection, diffusion and propagation. Thecharacteristics method is used to solve the advection, the alternating direction implicitmethod is applied to compute the diffusion, and the conjugate gradient iterativemethod is employed to calculate the propagation. Two ways to simulatethe moving boundary problem are studied. The first method is based on the weirformulation. The second method is based on the assumption that a thin water layerexists over the entire dry region at all times. A number of analytical solutions areused to validate the model. The model is also applied to simulate the wind drivencirculation in Lake Okeechobee, Florida.(135 page document)
    Keywords: Oceanography ; Limnology ; Engineering ; hydrodynamics ; simulations ; lakes ; estuaries ; Lake Okeechobee ; Florida ; thesis
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    Productivity of Florida Springs: Second annual report to Biology Branch, Office of Naval Research progress from January 1 to December 31, 1954 (2021)
    University of Florida, Gainesville, Department of Biology | Gainesville, FL
    In:  http://aquaticcommons.org/id/eprint/373 | 3 | 2011-09-29 22:09:11 | 373
    Details
    Publication Date: 2021-06-29
    Description: Production measurements at different times of the year indicate a linear relationship of light intensity and overall production at about 8% of the visible light energy reaching plant level. Measurements of a coral reef at Eniwetok indicate 6%. Further evidence of breeding at all seasons but with a quantitative pulse in the seasons of maximum light indicates that the seasonal fluctuation in primary production is routed through reproduction rather than through major changes in populations. The succession of plants and anmals of the aufwuchs has been shown with glass slides and counts from Sagittaria blades. Losss of oxygen bubbles during the day and emergence of aquatic insects at night have been measured with funnels. Bell jar measurements are reported for bacterial metabolism on mud surfaces. pH determined CO2 uptake agrees with titration determinations. A few rough estimates of herbivore production have been made from caged snails, aufwuchs succession, and fish tagging. Nitrate uptake a night by aufwuchs communities has been confirmed in a circulating microcosm experiment as well as in bell jars in the springs. Distributions of oxygen and organisms have been used to criticize the saprobe stream classification system. Theoretical consideration of maximum photosynthetic rates in teh literature data indicates logarithmic rate variation inversely with organismal size just as for respiratory metabolism. Extreme pyramid shapes are thus shown for communities in which organismal size decreases up the food chain and for other communities with the same energy influx but with organismal size increasing up the food chain. Literature data is used to further demonstrate the validity of the optimum efficiency-maximum power principle for photosynthesis. Work on plants by Dr. Delle Natelson indicates essential stability of aquatic plant communities after 3 years and about 10-20% reproducibility in previous biomass estimates by Davis. Work on an animal picture of the fishery characteristics by Caldwell, Barry, and Odum is half completed. The study of aquatic insects in relationship to spring gradients by W.C. Sloan has been completed an an M.S. thesis. J. Yount has begun a study of affect of total productivity on community composition using aufwuchs organisms on glass slides placed in different current and light conditions in Silver Springs. (49pp.)
    Keywords: Ecology ; Limnology ; Silver springs ; springs ; insects ; algae ; aufwuchs ; diatoms ; productivity ; Florida ; fishes
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    Relations of environmental contaminants, algal toxins, and diet with the reproductive success of American alligators on Florida Lakes (2021)
    Florida Cooperative Fish and Wildlife Research Unit , University of Florida | Gainesville, FL
    In:  http://aquaticcommons.org/id/eprint/1076 | 3 | 2011-09-29 21:11:49 | 1076 | Florida Cooperative Fish and Wildlife Research Unit
    Details
    Publication Date: 2021-07-05
    Description: (113 page document)
    Description: Research Work Order no. 193
    Keywords: Management ; Conservation ; Pollution ; Biology ; Limnology ; endocrine disruption ; American alligator ; Florida ; reproduction
    Repository Name: AquaDocs
    Type: monograph
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    Dry Down Tolerance of the Florida Apple Snail (Pomacea paludosa, Say): Effects of Age and Season (2021)
    Florida Cooperative Fish and Wildlife Research Unit , University of Florida | Gainesville, FL
    In:  http://aquaticcommons.org/id/eprint/1065 | 3 | 2011-09-29 21:10:33 | 1065 | Florida Cooperative Fish and Wildlife Research Unit
    Details
    Publication Date: 2021-07-05
    Description: This Research Work Order includes three experiments to look at apple snail dry downsurvival as a function of age and season. Two of those experiments have been completedand the third one will likely run through February (depending on snail survival). The thirdexperiment began on September 2 1, 1998. The detailed results of Experiment # 1 and #2were reported in the update report of 10/15/98. The overall survival for Experiments #I and#2 are included herein for comparison with Experiment #3. (7 page document)
    Description: Research Work Order no. 182
    Keywords: Biology ; Limnology ; Florida Apple Snail ; Pomacea paludosa ; Say ; Florida ; dry down ; water levels
    Repository Name: AquaDocs
    Type: monograph
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    Winter Movements and Use of Warm-water Refugia by Radio-tagged West Indian Manatees Along the Atlantic Coast of the United States (2021)
    Florida Cooperative Fish and Wildlife Research Unit , University of Florida | Gainesville, FL
    In:  http://aquaticcommons.org/id/eprint/1068 | 3 | 2011-09-29 21:11:03 | 1068 | Florida Cooperative Fish and Wildlife Research Unit
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    Publication Date: 2021-07-05
    Description: The West Indian manatee's metabolic physiology constrains it to subtropical and tropicalregions. In waters of the United States, a manatee's ability to find reliable warm-water refugiaduring winter cold periods is critical to its survival. This report documents how radio-taggedmanatees used a network of 14 industrial and 3 "natural" warm-water sites along the east coastof Florida and Georgia duringwinter. Most industrial sites were powerplant discharges but alsoincluded pulp mill effluents. TheU. S. Geological Survey's SireniaProject tracked 71 manateesover 12 winter seasons (1986-1998) using field-based VHF radio-telemetry and Argos satellite based telemetry.Thirty-seven individuals weretracked over periodsofat least 100daysbetween November and March of a given winter, manyfor multiple years. Presence at a warmwaterrefugewasdefinedas a location occurring within 200m (for a VHF field observation) orwithin 1 km (for a satellite-determined location) ofthe site. (133 page document)
    Description: Sirenia Project, Florida Caribbean Science Center, U.S. Geological Survey
    Description: Final Report Prepared for: Florida Power and Light Company Environmental Services Dept. 700 Universe Blvd. Juno Beach, FL 33408 and U.S. Geological Survey, Florida Caribbean Science Center, Sirenia Project 412 NE 16th Ave., Rm. 250 Gainesville, FL 32601
    Keywords: Biology ; Limnology ; Information Management ; West Indian Manatee ; Trichechus manatus ; Florida ; tracking ; water temperature ; movements
    Repository Name: AquaDocs
    Type: monograph
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    Research objectives to support the South Florida Ecosystem Restoration initiative-Water Conservation Areas, Lake Okeechobee, and the East/West waterways (2021)
    Florida Cooperative Fish and Wildlife Research Unit , University of Florida | Gainesville, FL
    In:  http://aquaticcommons.org/id/eprint/1087 | 3 | 2011-09-29 21:10:01 | 1087 | Florida Cooperative Fish and Wildlife Research Unit
    Details
    Publication Date: 2021-07-05
    Description: The South Florida Ecosystem encompasses an area of approximately 28,000 km2 comprising at least 11major physiographic provinces, including the Kissimmee River Valley, Lake Okeechobee, the Immokalee Rise, theBig Cypress, the Everglades, Florida Bay, the Atlantic Coastal Ridge, Biscayne Bay, the Florida Keys, the FloridaReef Tract, and nearshore coastal waters. South Florida is a heterogeneous system of wetlands, uplands, coastalareas, and marine areas, dominated by the watersheds of the Kissimmee River, Lake Okeechobee, and theEverglades.Prior to drainage, wetlands dominated the ecosystem, covering most of central and southern Florida. Thelandscapes included swamp forests; sawgrass plains; mosaics of sawgrass, tree islands, and ponds; marl-formingprairies dominated by periphyton; wet prairies dominated by Eleocharis and Nymphaea; freshwater marshes;saltwater marshes; cypress strands; and a vast lake-river system draining into Lake Okeechobee. Elevated areasthat did not flood supported pine flatwoods, pine rocklands, scrub, tropical hardwood hammocks, and xerichammocks dominated by oaks. The natural seascapes of South Florida consisted of riverine and fringe mangroveforests; beaches and dunes; seagrass beds; intertidal flats; mud banks; hardbottom communities; coral reefs; andopen, inshore shallows. All these habitats were interconnected on an extremely low topographic gradient (2.8cm/km) with elevations ranging from about 6 m at Lake Okeechobee to below sea level at Florida Bay.The Science SUb-Group (1993) described the defining characteristics of the South Florida Ecosystem and the problems that resulted from hydrologic alterations and other anthropogenic changes.Restoration objectives were proposed for each sub-regionand the region as a whole.The overall goal of the restoration effort is to restore a sustainable South Florida Ecosystem that preservesthe valued properties of South Florida's natural systems and supports productive agriculture-, fishery-, and tourist.based economies and a high quality of urban life. Sustainability means high natural productivity, human andecosystem health, and resiliency to climatic extremes and catastrophic events. It also means accommodation ofneeds of human systems-flood control, irrigation, and drinking water supply.SCOPEThis section addresses the entire ecosystem, cutting across the artificial boundaries of designatedsubregions, as well as geopolitical and geomorphological boundaries, to present the broader issues of deVelopingan interagency and interdisciplinary ecosystem-based science program to support South Florida restoration. Herewe discuss the general premise and the general approach, with brief discussions on monitoring, modeling, andspecial studies. The latter two topics are covered in greater detail in other sections. (PDF contains 119 pages)
    Description: Research Work Order no. 139
    Description: Science sub-meeting, September 27, 1994
    Keywords: Management ; Limnology ; Planning ; South Florida Ecosystem Restoration Initiative ; objectives
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    Type: monograph
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