Management of Alewife
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Management of Alewife

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Presentation from 2008 Wellfleet Harbor Conference

Presentation from 2008 Wellfleet Harbor Conference

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Management of Alewife Presentation Transcript

  • 1. The Life History and Management of Alewife ( Alosa pseudoharengus ) Abigail Franklin, University of Massachusetts, Amherst Department of Natural Resources Conservation
  • 2.
    • Natural history of herring
    • Population status & possible causes of declines
    • Nature-like fishway research
    • Agencies that manage alewife
    • New management plan!
    • Situation at Herring River, Wellfleet
    The Biology and Management of Alewife ( Alosa psuedoharengus )
  • 3. Anadromous and Catadromous Species Atlantic Salmon American Shad Alewife Blueback Herring Sea Lamprey Atlantic Sturgeon Shortnose Sturgeon Sea-run Brown Trout Sea-run Brook Trout White Perch Rainbow Smelt Striped Bass American Eel Hickory Shad Gizzard Shad Alabama Shad Skipjack Herring
  • 4. Alewife Blueback Herring White Perch Striped Bass American Eel Anadromous and Catadromous Species of Wellfleet
  • 5. Range of Alewife (Alosa pseudoharengus)
  • 6. Alewife ( Alosa pseudoharengus) Ocean Estuary River Upstream spawning migration to natal river Downstream migration Spawning in ponds
  • 7. Eggs
    • 0.80-1.27mm
    • Hatch in 2-5 days
    • Larvae form schools 2 weeks after hatching
  • 8. http://www.glooskapandthefrog.org
  • 9. Juvenile alewife research
    • Yako, Mather, & Juanes 2001
    • - Not just temperature
    • Migrate July-November
    • Migration is complex
    • First to leave are smaller
    • Peak migrations correspond to low food
    • Migrate during new moon
  • 10. Where do they go in the ocean? Summer and Fall Gulf of Maine
  • 11. Where do they go in the ocean? Winter
  • 12. Where do they go in the ocean?
  • 13.  
  • 14. How do they switch from salt to freshwater? Gills Gill filaments Chloride cell
  • 15.  
  • 16.  
  • 17. Pounds of River Herring Landed 1950-2004 River Intercept Fisheries Data from National Marine Fisheries Service Population Status
  • 18. Who cares if herring populations are declining? So what?
  • 19. Who cares if herring populations are declining? So what? People Zooplankton Atlantic cod Bluefish Striped Bass eat eat eat Blueback Herring Alewife eat eat eat
  • 20. http://www.glooskapandthefrog.org
  • 21. Who cares if herring populations are declining? So what?
  • 22.  
  • 23.
    • Water quality
    • Blocked access to spawning grounds
    • Fishing mortality
    Cause of declines?
  • 24. United States Geological Survey Silvio O. Conte Anadromous Fish Research Center One Migratory Way, Turners Falls, MA
    • Research Sections
    • Ecology
    • Physiology
    • Behavior
    • Fish Passage
    • -Dr. Alexander Haro
  • 25.  
  • 26. 2500
  • 27. Goal: create appropriate slope and water velocity to allow fish to pass with minimum amount of stress, injury, delay, and mortality Technical Fishways Pool and weir Denil Steeppass
  • 28. Technical Fishway Nature-like Fishway
    • Constructed with metal, concrete, wood
    • Same hydraulic conditions
    • Goal: Pass target species
    • Constructed with natural substrates
    • Range of velocities, design site specific
    • Goals: Stream continuity, pass all migratory fish, provide habitat
    Technical vs. Nature-like Fishways Steeppass Nature-like
  • 29. Town Brook, Plymouth
  • 30.  
  • 31. Town Brook, Plymouth Billington St. Dam 2002
  • 32. Billington St. Dam 2002 Town Brook, Plymouth
  • 33. Town Brook, Plymouth Nature-like Fishway
  • 34. Town Brook, Plymouth Length: 30m Slope: 1:20 Width: 7-8m
  • 35. A1 Off Billington St. Dam Pool & weir Fishway A6 A8 A5 A4 A7 A2 A3 Town Brook Pond Release Site ~1 km downstream Nature-like Fishway Flow Antenna Layout – Town Brook
  • 36. Town Brook, Plymouth
    • 103 fish detected at beginning of fishway
    • 96 fish detected at top of fishway
    • Passage: 94% completed NLF
    • Only 5.8% pass beyond next dam
    Results
  • 37. Town Brook, Plymouth Off Billington St. Dam = 96 =6
  • 38. Town Brook Off Billington Dam, Plymouth How many attempts did they make to pass? How long did they stay below the dam on the first attempt?
  • 39.  
  • 40. Ocean intercept fishery CHOIR Coalition
  • 41. CHOIR Coalition
  • 42. CHOIR Coalition
  • 43. Who manages river herring?
    • Federal : NOAA National Marine Fisheries Service
    • Regional : Atlantic States Marine Fisheries Commission
    • States : Massachusetts Division of Marine Fisheries
    • Local : Town of Wellfleet
    • Watershed Associations
  • 44.
    • Atlantic States Marine Fisheries Commission
    • DRAFT AMENDMENT 2 to the
    • Interstate Fishery Management Plan
    • For SHAD AND RIVER HERRING
    • For Public Comment
    • (River Herring Management)
    http://www.asmfc.org Comments due by January 1, 2009 Public Hearing December 1,2008
  • 45.
    • Technical Report: A Survey of Anadromous Fish Passage in Coastal Massachusets
    • River Herring Moratorium 2005, 2008
    • Dockside Sampling
    Massachusetts Division of Marine Fisheries
  • 46. What impacts river herring populations in the Herring River? Delay Water Quality
  • 47.  
  • 48.  
  • 49. http://www.glooskapandthefrog.org