CORAL HEALTH AS THE DOLPHIN S INVISIBLE THERMOMETER
DRILL A 3-INCH CORE TO TRACK PH HISTORY
Push a clear acrylic resin tube into live Porites coral at dawn when polyps are retracted. Label each core with GPS coordinates and ; lab psychoanalysis of B isotopes reveals pH swings the dolphins swam through for the past 18 months.
MAP NIGHTTIME CORAL FLUORESCENCE WITH A BLUE LIGHT
Sweep a 450 nm LED flashlight across ramification Acropora at 21:00; sound:ies glow neon green, while in a bad way ones flicker orangeness. Dolphins keep off orangeness patches mark these zones with perishable drooping tape for next morn s behavioral scan.
COUNT PARROTFISH BITES PER
ANCH IN A 5-MINUTE WINDOW
Anchor a GoPro 1 meter above a Pocillopora settlement and record for 5 proceedings at slack tide. Dolphins that scrounge within 10 meters of high-bite:ies( 12 bites 5 min) show 30 more tail-slapping within the hour.
CORAL DISEASE HOTSPOTS SHAPE DOLPHIN SOCIAL NETWORKS
DEPLOY TEMPERATURE LOGGERS UNDER BLACK BAND LESIONS
Zip-tie a HOBO Pendant feller straight at a lower place the black band on a Diploria psyche coral. Dolphins split into small, quieter subgroups when daily temperature variance under lesions exceeds 0.8 C.
TRACK DOLPHIN RESPIRATION RATES NEAR WHITE SYNDROME FRONTS
Use a raincoat stopo watch to time surfacing intervals of focal dolphins within 5 meters of whiten syndrome margins. Respiration rates jump from 2.1 to 3.4 breaths per moment when the front advances 1 cm in 24 hours.
CREATE A DAILY DISEASE PROXIMITY INDEX FOR EACH DOLPHIN
Assign each individual a seduce: 0 50 m from any lesion, 1 10 50 m, 2
CORAL STRUCTURE DICTATES DOLPHIN HUNTING TACTICS
MEASURE CREVICE WIDTHS WITH A CALIPER AT LOW TIDE
Slide a integer caliper into every cranny wider than 3 cm in a 2 m patch of solid Porites. Dolphins use echolocation click trains 20 yearner when hunting prey in crevices narrower than 5 cm.
INSTALL A HYDROPHONE ARRAY AROUND STAGHORN THICKETS
Mount four Aquarian H2a-XLR hydrophones at cardinal points around a 10 m diameter Acropora cervicornis thicket. Dolphins switch from split-pulse foraging to silent, slow glides when close resound inside the copse drops below 80 dB re 1 Pa.
TIME DOLPHIN CORRAL DIVES WITH A STOPWATCH
Start the see when a s trematode disappears into a coral head and stop when it surfaces. Dives stable 12 18 seconds with victorious prey in 78 of discovered cases; shorter or longer dives yield only 32 success.
CORAL RECOVERY TRIGGERS BEHAVIORAL REBOUNDS
RECORD DOLPHIN PLAY BEHAVIOR AFTER CORAL LARVAL SETTLEMENT
Use a waterproof vocalise recorder to log every aerial spin, bow-riding , and object play bout for 30 transactions post-settlement. Play rates treble within 48 hours of circumpolar spat on antecedently washed-out Montipora.
DEPLOY SETTLEMENT TILES WITH TIME-LAPSE CAMERAS
Glue 10 cm ceramic tiles to rebar stakes in a 3 3 grid; aim a GoPro set to 1-minute intervals at the center tile. Dolphins begin synchronized porpoising within 24 hours of the first 50 spat subsidence on the grid.
MONITOR DOLPHIN SLEEP BUOYS AFTER CORAL REGROWTH
Count the amoun of resting dolphins logging at the surface within 20 meters of a recovering Acropora prorogue. Sleep buoys increase from 1 2 individuals to 5 7 once live wrap up exceeds 40 in a 5 m radius. Narcos.
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