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Larval Connectivity Talk Goals 1.) INTRODUCE A NEW FLOW DATASET 2.) COMPARE WITH OLD 3.) STATISTICS... SOME WAYS OF VISUALIZING THE DATA
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What is it again? Probabilities... Connectivity...... The fraction of larvae transported to x x y
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Larval Connectivity... What do I want to do with this? 1.) MAKE continuous CONNECTIVITY PATTERNS (CHRIS...) 2.) MAKE point CONNECTIVITY FOR EMPIRICAL COMPARISONS (JENN...) 3.) LOOK AT behavior (THIS MODEL IS 3D) - (CROW, SARA, SATOSHI, DANIELLE) 4.) MATCH UP WITH SATELLITE SSC IMAGERY AND UNDERSTAND LARVAL survivability (ME...) 5.) FIND physical features THAT RELATE TO LARVAL SUPPLY/PRODUCTION (TIM...) 6.) SIMULATE gene flow (ME, CROW, KIM)
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FIRST - Get a Model 1, thanks Charles Dong, UCLA m m
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CHARLES’ 1km grid resolution SOCAL Bight nested domain 3 hourly temporal resolution 3D - 40 vertical layers LEO’S 5km grid resolution Santa B. Channel nested domain 6 hourly 2D
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depth (m) km depth (m) km 0 Charles’, Fully 3D Leo’s, Fully 2D
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Wind Forcing Captures actual events but unlike the old dataset this not an assimilation model
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Source/Destination Patches 87 of them
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Lagrangian particle tracking 2002 only so far, getting 1998 Particle time step is 1hr There is no boundary reflectance, if they hit the land they stick Longitude Lat SSH
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Point Release, Release Timing Released on Jan. 1 Release location Released on Jan. 21 Release location 30 days later
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Point Release, Release Timing Released on Jan. 1 Release location Released on Jan. 1 Release location 30 days later Vertical position: stay near surfaceVertical position: passive transport
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Time (in time steps, 800 = 90 days) Temp (deg C) Depth (m)
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Boundary Crossing 2.2% of particles sticked on masked regions Reducing the time stepping from 1 hour to 30 min does not help (2.2%) How can we avoid this? Does this change connectivity?
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Definition of Settlement & Connectivity Settlement is defined as...... after a pre- competency time window (e.g. 10days) 1st Discrete Habitat Patch
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Potential Source Power Connectivity (1) - JANUARY Patches No. Settlers Day 10 competent
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Connectivity Matrixes JANUARYJUNE PLD - 30 days Competent after 10 days SOURCE DESTINATION
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Potential Export Power Summing over the Connectivity Matrix JANUARY Potential Import Power
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Summing over the Connectivity Matrix JUNE Potential Export Power Potential Import Power
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Satoshi’s Results Lagrangian particle tracking
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Identify habitat BETWEEN 20 - 60M DEPTH
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IMPORT PROBABILITY DENSITY
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EXPORT PROBABILITY DENSITY
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Conclusions 1.) NEW FLOW IS BETTER THAN OLD
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