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depth decreases. Improvements in transparencies during the recreational season, resulting from reductions in phosphorus loads over the 1990-1996 period are not detectable in the presence of climatological and other random variations. Nevertheless, Walker (1998) concludes that over the 1975-1996 time frame increases in transparencies are generally correlated with decreases in hatchery phosphorus loads. However, clear evidence for this is lacking. Final Outcome Finally, after 14 years a consent agreement was filed with the Court in March 2000. It addresses the amount of water and phosphorus the hatchery can discharge, the number of salmon that can pass the lower weir, the water quality monitoring required for the watershed and the hiring of an implementation coordinator to oversee implementation and compliance with the agreement. The hatchery discharge of phosphorus will be phased down over the next six years to 175 pounds per year with no more than 55 pounds for any three-month period. No more than 20 million gallons per day can be discharged (13,889 gpm). Also, the phosphorus concentration of Platte Lake must not exceed 8 )g/L 95% of the time. All inflows and discharge points will be measured twice per week for total phosphorus, temperature, suspended solids and flows, and current watershed monitoring will continue until compliance with the final 175-pound phosphorus standard has been demonstrated for five continuous years. The phased approach is needed to allow the facility to be renovated, a key component of the program. Up to 7.5 million dollars have been approved for the renovation aimed at designing state-of-the-art effluent controls. The parties feel that this agreement represents a model of how government can successfully interact with concerned citizens to protect natural resources. References Grant, J., 1979. Water quality and phosphorus loading analysis of Platte Lake, 1970-1978. Water Quality Division, Michigan Department of Natural Resources, Lansing. Hirsch, R.M., J.R. Slack, and R.A. Smith, 1982. Techniques of trend analysis for monthly water quality data. Water Resources, Vol 18, no. 1. pp 107-121. King, D.L., 1999. Memorandum, re. Platte Lake, to T.R. Batterson, Michigan State University, 9
East Lansing. Walker, W.W., 1998. Analysis of monitoring data from Platte Lake, Michigan. Report prepared for the Michigan Department of Natural Resources, Lansing. Whelan, G.E., 1999. Managing effluents from an intensive fish culture facility: The Platte River State Fish Hatchery Case History. In: Addressing concerns for water quality impacts from largescale Great Lakes aquaculture. Great Lakes Fishery Commission, Ann Arbor, Michigan, pp 43- 47. 10
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TABLE OF CONTENTS i Pages Symposium
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iii Pages Production of YY Male Til
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v Pages Special Session 2 - Volunte
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into the grow-out tanks. The airlif
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one above the other, reducing the
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nutritional requirements of summer
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Pump Functions The AMI Multi-Functi
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Introduction Commercial Application
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System Performance: Nine of these r
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electrical costs reduced by more th
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Nitrate, as the final product of th
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Culture conditions On August 1, 199
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surface area 740 m 2 /m 3 ). The co
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achieved a 750 mg/l decline in the
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ecomes possible without water repla
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tropical countries for tropical fis
Page 33 and 34: fastest absorption of nutrients fro
Page 35 and 36: Recirculation System Design; The KI
Page 37 and 38: The Japanese Aquaculture Market and
Page 39 and 40: Entrepreneurial and Economic Issues
Page 41 and 42: Our largest error though was in not
Page 43 and 44: Before You Invest. In my role as a
Page 45 and 46: are 590,000 kg/year. Prices, deprec
Page 47 and 48: Twenty-One Years of Commercial Reci
Page 49 and 50: have projects in the planning stage
Page 51 and 52: As the upward trend for seafood dem
Page 53 and 54: and the World Health Organization (
Page 55 and 56: Abstract not available at time of p
Page 57 and 58: increase the potential for bottlene
Page 59 and 60: Figure 1: Comparison of First, Seco
Page 61 and 62: Ecological and Resource Recovery Ap
Page 63 and 64: Acid mine drainage (AMD) is widespr
Page 65 and 66: and the polyphenol content (Northup
Page 67 and 68: References CAST. 1996. Integrated A
Page 69 and 70: Tilapia and Fish Wastewater Charact
Page 71 and 72: In comparison of gravity separation
Page 73 and 74: NY DEC Interaction. The owners of F
Page 75 and 76: O 2 Feed CO 2 Ammonia Figure 1. Gen
Page 78 and 79: The Hatchery The hatchery supports
Page 80 and 81: in crayfish populations, disappeara
Page 82 and 83: Table 2. Summary of average flows a
Page 86 and 87: Perspective on the Role of Governme
Page 88 and 89: unprecedented in the growth of a ne
Page 90 and 91: with siting and the special equipme
Page 92 and 93: disease. We need to create environm
Page 94 and 95: Introduction Implications of Total
Page 96 and 97: The NOAA/DOC Aquaculture Initiative
Page 98 and 99: Future Directions for the NOAA/DOC
Page 100 and 101: ’ Conduct research and help devel
Page 102 and 103: Information sources for aquaculture
Page 104 and 105: Tilapia is an important fish specie
Page 106 and 107: To determine the RSE of the examine
Page 108 and 109: Fig.1(a) Typical integrated olfacto
Page 110 and 111: Table 1. Relative stimulatory effic
Page 112 and 113: feeder control algorithms on a PC s
Page 114 and 115: Durant, M. D., Summerfelt, S. T., H
Page 116 and 117: The Effects of Ultraviolet Filtrati
Page 118 and 119: Table 1. The mean (N = 20) initial
Page 120 and 121: Introduction Evaluation of UV Disin
Page 122 and 123: Figure 1 Schematic of the experimen
Page 124 and 125: Table 1 Summary of the tested resul
Page 126 and 127: similar disinfection efficiency. Th
Page 128 and 129: (2) UV254 transmittance was an impo
Page 130 and 131: Materials and Method Schematic draw
Page 132 and 133: the amount of added increase by pro
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Oxygen Management at a Commercial R
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the outlet and inlet DO concentrati
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daylight hours averaged 0.5 kg DO/k
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At this time, the control (both tan
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yellow color, while the water in th
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Case Study: Genetic improvement of
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and human effort. This commitment m
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- Harold Kincaid works for the US F
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Figure 1. Production and selection
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Performance Comparison of Geographi
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Abstract Issues in the Commercializ
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The Salmon Example Salmon farming i
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Second, as the salmon farming indus
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Devlin, R.H., Yesaki, T.Y., Biagi,
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Introduction Removal of Protein and
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higher superficial air velocity gre
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Hydrodynamics in the ‘Cornell-Typ
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The ideal mean residence time was a
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A sample pellet-flushing test is sh
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tank’s dead time. When fish were
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Partial-Reuse Systems Ideally, the
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Figure 1. The partial-recirculating
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Table 1. Mean values (± standard e
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dioxide (1) and un-ionized ammonia
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Comparative Growth of All-Female Ve
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Effects of Temperature and Feeding
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aquaculture systems, where the envi
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Figure 2. Growth relationships of y
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greater than the desired temperatur
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Figure 3. Cumulative feed consumpti
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35 days into the experiment, and th
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C. Maximum specific feed consumptio
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of the fish used in this experiment
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Coche, A.G. Cage culture of tilapia
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Predictive Computer Modeling of Gro
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new studies begun. Daily water qual
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Development Rationale for the Use o
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Further, reduction in operating cos
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The operation of the MRBF is domina
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equired a high frequency of washing
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Several dramatically different hull
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support airlift applications. These
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Enhancing Nitrification in Propelle
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The last filter media used in this
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Table 2. Water quality analyses wer
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1193.67 g-NO2 m -3 d -1 with the ni
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Biofilters Used in Recirculating Fi
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The Cyclone Sand Biofilter: A New D
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Marine Biotech (Beverly, MA) 2 has
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120.0% 100.0% 80.0% 60.0% 40.0% 20.
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Nitrification Potential and Oxygen
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diffused aeration. The experiments
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It needs to be pointed out that the
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ammonia removal rate was low in the
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Tanaka, H. and Dunn, I. 1982. Kinet
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Ammonia removal activity was increa
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Ammonia Conc. (mg/NH 4 + -N/L) 12 1
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Antifouling Sensors and Systems for
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The Vic Thomas Striped Bass Hatcher
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Introduction In the Central Valley
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Each of the two recirculation syste
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Body injury rates (% of fish) to th
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usiness expectations and limited te
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needs of the endemic Murray-Darling
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sold (Gooley et al. 1999). The dist
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In response to the large levels of
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planning at the outset will, more t
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Table 1 Summaries of selected speci
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a) Photo courtesy of Neil Armstrong
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Information flow 1. Initial concept
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achieve continuous production, faci
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Solids Removal (9.71%) Electricity
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The Effect of Fish Biomass and Deni
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Marine Denitrification of Denitrifi
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(a) (b) (c) Nitrate conc. (mg NO 3
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6. Poxton, M. G. and S. R. Allouse.
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control unit. Two distinct advantag
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the many variables that are involve
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Filtration Recirculation systems re
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6. AERATION DEVICE: 6” airstones
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Piper, R.G., I.B. McElwain, L.E. Or
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carried out for both the 50 m 3 and
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possible to predict mean monthly ta
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Recirculation Systems for Farming E
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of this pilot-system will be evalua
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Figure 2. The main screen of the en
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What: What is your business structu
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should more than offset the costs o
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• Any other documents indicating
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production projects. Once these par
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A single discharge pipe works to re
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1. Oxygen recharge rates or the abi
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2.9.1.2. Measure ammonia. 2.9.1.3.
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Discharge pipe Number used within e
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Previous efforts by the Illinois De
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media. The water enters the filter
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Table 3: Summary of pro forma cash
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References Moss, S.M. (1999) “Bio
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Propagation and Culture of Endanger
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at a rate of 2 ft 3 /kg feed/d. Sod
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Modification of D-Ended Tanks for F
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MATERIALS AND METHODS All tests wer
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The single 100 ppm hydrogen peroxid
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The Potential for the Presence of B
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The main advantage for microorganis
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organism causes disease in humans,
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Bacteria No. of Facilities No. of D
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Assanta, M.A., Roy, D. and Montpeti
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Jones, K. and Bradshaw, S.B. (1996)
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Wilderer, P.A. and Characklis, W.G.
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systems (Egusa, 1981; Mellergaard a
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ecirculating system after mortality
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Fish Health Monitoring and Maintena
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disease problems. For tilapia, a sp
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The Role of Fish Density in Infecti
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This apparent interaction between t
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References Banks, J.L. (1994) Racew
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