P1252109290lXFgM

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Population Connectivity and FVCOM
Jim Lerczak (WHOI) With Claudio DiBacco (UBC),
Lauren Mullineaux (WHOI), and Simon Thorrold
(WHOI)
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Bivalve Connectivity
Massachusetts Bay
? Probability that a larva that spawns at
habitat i settles successfully at Habitat j. ?
Length scales of habitat connectivity. ?
Directionality. ? Variability External
(physical forcing) vs Internal (larval
behavior/timing of spawn/duration of larval stage.
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Juvenile Blue Mussel (Mytilus edulis)
Field Sampling in Massachusetts Bay
Mass. Bay Target Species
Larval outplant studies Juvenile recruit
collection Trace elemental composition analysis
Juvenile Soft Shell Clam (Mya arenaria)
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FVCOM Modeling Population Connectivity in
Massachusetts Bay
Forcing Tides, Buoyancy and Winds Multiple
scales 1) gtMassachusetts Bay
2) Small sub-embayments w/in Mass
Bay Irregular coastline Wetting/drying (e.g.,
Barnstable Harbor)
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High Resolution Grids of Sub-Bays (e.g.,
Barnstalbe Harbor, Plymouth/Duxbury Harbor,
Barnstable Harbor)
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Barnstable Harbor (75 m resolution)
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Massachusetts Bay Domain
Maximum resolution 250 m within Sub-Embayments
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Boston Harbor
Plymouth/Duxbury Harbor
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Barnstable Harbor Tidal Run
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Circulation tends to be cyclonic around Mass Bay
(from Lermusiaux, 2001)
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Finite Volume Coastal Ocean Model
(FVCOM) simulation of circulation in
Massachusetts Bay with tides and buoyant forcing
from Gulf of Maine rivers. Particles tracked in
the vicinity of Boston and Plymouth Harbors.
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(No Transcript)
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Finite Volume Coastal Ocean Model
(FVCOM) simulation of circulation in
Massachusetts Bay with tides and buoyant forcing
from Gulf of Maine rivers. Particles tracked in
the vicinity of Boston and Plymouth Harbors.
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Boston Harbor
Fraction Remaining In Boston Harbor
Time (Days)
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Plymouth/Duxbury Harbors
Fraction Remaining In Plymouth/Duxbury
Time (Days)
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Cumulative Particles Entering Barnstable Harbor
From Boston Harbor
From Plymouth/Duxbury Harbors
Time (Days)
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Generate an ensemble of runs with realistic
forcing by buoyancy, winds and tides. Develop
statistics of connectivity matrix. Consistency
with field observations and trace
elemental analyses