Lake Pocotopaug Lake and Watershed Restoration Evaluation ...

More documents

Recommendations

Info

TABLE 21 continued. MANAGEMENT OPTIONS FOR CONTROL OF ALGAEOPTION MODE OF ACTION ADVANTAGES DISADVANTAGESBiological Controls17) Fungal/bacterial/viralpathogens18) Competition andallelopathy♦♦♦♦Addition of inoculum to initiateattack on algal cellsPlants may tie up sufficientnutrients to limit algal growthPlants may create a lightlimitation on algal growthChemical inhibition of algaemay occur throughsubstances released by otherorganisms♦♦♦♦♦May create lakewide“epidemic” and reduction ofalgal biomassMay provide sustained controlfor several yearsCan be highly specific to algalgroup or generaHarnesses power of naturalbiological interactionsMay provide responsive andprolonged control♦♦♦♦♦♦♦♦Largely experimental approachat this timeConsiderable uncertainty ofresultsMay promote resistant formswith high nuisance potentialMay cause high oxygen demandor release of toxins by lysedalgal cellsEffects on non-target organismsuncertainSome algal forms appearresistantUse of plants may lead toproblems with vascular plantsUse of plant material may causedepression of oxygen levelsLake Pocotopaug Restoration Evaluation 120May 2002
TABLE 21 continued. MANAGEMENT OPTIONS FOR CONTROL OF ALGAEOPTION MODE OF ACTION ADVANTAGES DISADVANTAGESBiological Controls18.a) Plantings fornutrient control18.b) Plantings for lightcontrol♦♦♦Plant growths of sufficientdensity may limit algal accessto nutrientsPlants can exude allelopathicsubstances which inhibit algalgrowthPlant species with floatingleaves can shade out manyalgal growths at elevateddensities♦♦♦♦♦Productivity and associatedhabitat value can remain highwithout algal bloomsPortable plant “pods”, floatingislands, or other structures canbe managed to limitinterference with recreationand provide habitatWetland cells in or adjacent tothe lake can minimize nutrientinputsVascular plants can be moreeasily harvested than mostalgaeMany floating species providevaluable waterfowl food♦♦♦♦♦♦Vascular plants may achievenuisance densitiesThere will be a water depthlimitation on rooted plants butnot algaeVascular plant senescence mayrelease nutrients and causealgal bloomsThe switch from algae tovascular plant domination of alake may cause unexpected orundesirable changes in lakeecology, especially energy flowAt the necessary density, thefloating plants will be arecreational nuisanceLow surface mixing andatmospheric contact will promoteanoxia near the sedimentLake Pocotopaug Restoration Evaluation 121May 2002
Page 2 and 3:
LAKE POCOTOPAUGLAKE AND WATERSHEDRE
Page 4 and 5:
11.3 Prevent algal blooms from occu
Page 6 and 7:
LAYPERSON’S SYNOPSISLake Pocotopa
Page 8 and 9:
The stocking of walleye in Lake Poc
Page 10 and 11:
Lake Pocotopaug Restoration Evaluat
Page 12 and 13:
Period Covered 1988• Pollution fr
Page 14 and 15:
Recommendations included• Algacid
Page 16 and 17:
Major EventDecember 1999 - Fish kil
Page 18 and 19:
Table 5. Land Use from the CT DEP G
Page 20 and 21:
Page 22 and 23:
Figure 4. Lake Pocotopaug Bathymetr
Page 24 and 25:
Table 6. QA/QC on Water Quality Dat
Page 26 and 27:
Soils - USDA at MAGIC UCONN Geograp
Page 28 and 29:
Table 8. Water Quality Variables Me
Page 30 and 31:
Page 32 and 33:
Phytoplankton samples were collecte
Page 34 and 35:
where many measurements would have
Page 36 and 37:
Figure 7. 2001 Temperature and Diss
Page 38 and 39:
Table 10 continued. 2001 Lake Pocot
Page 40 and 41:
phytoplankton biomass (Wetzel 1983)
Page 42 and 43:
Figure 9. Annual June, July and Aug
Page 44 and 45:
elow 7:1 occurred on September 22,
Page 46 and 47:
Table 12. 2001 Dry and Wet Weather
Page 48 and 49:
Table 12 continued. 2001 Dry and We
Page 50 and 51:
Page 52 and 53:
Page 54 and 55:
Page 56 and 57:
were identified to genus and enumer
Page 58 and 59:
Table 13 continued. 2001 Phytoplank
Page 60 and 61:
Page 62 and 63:
Page 64 and 65:
Page 66 and 67:
Page 68 and 69:
Figure 10. 2001 Phytoplankton Bioma
Page 70 and 71:
The late summer bloom of blue-green
Page 72 and 73:
Table 15. 2001 Zooplankton DensityZ
Page 74 and 75:
Table 16. 2001 Zooplankton BiomassZ
Page 76 and 77: 7.0 RELATIONSHIPS AND TRENDS7.1 Pre
Page 78 and 79: Figure 13. 1991-2001 Surface Water
Page 80 and 81: Figure 15. 2001 Surface and Mid-dep
Page 82 and 83: Figure 16. 1991-2001 Chlorophyll a
Page 84 and 85: Figure 18. 2001 Chlorophyll a vs. S
Page 86 and 87: Figure 20. 1991-2001 July and Augus
Page 88 and 89: Table 17. Empirical Model Calculati
Page 90 and 91: Table 18. Total Phosphorus Loading
Page 92 and 93: Table 19. Wet Weather Loading Summa
Page 94 and 95: With the best possible treatment of
Page 96 and 97: water quality should focus on input
Page 98 and 99: 10.0 MANAGEMENT NEEDS AND OBJECTIVE
Page 100 and 101: 11.2 Reducing Total Phosphorus and
Page 102 and 103: undeveloped forest land, an opportu
Page 104 and 105: Figure 22. Buffer Strips for Pollut
Page 106 and 107: Figure 23. Catch Basin with Sump an
Page 108 and 109: early spring to capture what appear
Page 110 and 111: Figure 26. Infiltration Systems.Lak
Page 112 and 113: Figure 27. Constructed Treatment We
Page 114 and 115: Chemical TreatmentIn-stream chemica
Page 116 and 117: TABLE 21. MANAGEMENT OPTIONS FOR CO
Page 118 and 119: TABLE 21 continued. MANAGEMENT OPTI
Page 130 and 131: 12.0 ADDITIONAL DATA NEEDSManagemen
Page 132 and 133: 13.0 RECOMMENDED MANAGEMENT PROGRAM
Page 134 and 135: this point, but as a rough guide, a
Page 136 and 137: 14.0 REFERENCESAd Hoc Lake Advisory
Page 138 and 139: Scheuler T.R., P.A. Kumble, & M.A.
Page 140 and 141: Appendix B:Supplemental Tables and
Page 142: Appendix D:Educational MaterialsLak
show all

Lake Pocotopaug Lake and Watershed Restoration Evaluation ...

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?