71 lines
1.5 KiB
Markdown
71 lines
1.5 KiB
Markdown
Turtle watch
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1% of seafloor but 33% of marine species
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Protects coast: coral reefs prevent coastal erosion
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Also mangroves!
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Food source
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Medicinal purposes
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Age: 500 million years
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- great immune system
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- Replace polyps really fast —> cancer treatment?
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# what is bleeching
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Energy source:
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- zooxanthellae (mutualistic relationship)
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- Small algea living inside transparent polyps: symbiosis
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- 70-90% of energy is from zooxanthellae
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- Predation: they eat worms! They have nesselzellen
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Bleeching is a response to stress:
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- Algaes leave (or are kicked out) because of stress
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Corals can recover from bleeching
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Corals can get pale (slightly bleeched)
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## Threats
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Utila has no water treatment: water all goes into the ocean! Use eco friendly products for corals
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Responsible seafood guide
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Recycle Aluminum
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Recycle plastic bottles at marina
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Greens (tracy collects compost )
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Bica
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# Fish
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Parrotfish everywhere is great they act like the gardeners of the reef.
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# Coral Watch
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- 20 colonies in one line (same depth) with a buddy
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- Use divelight
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- Shape: branching, boulder or plates
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- ![[image 6.jpg]]
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- avoid corals with white tips: they are growing, not sign if sickness
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- ![[image 7.jpg]]
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- No blue or purple corals
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- No firecorals
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Soft corals vs Hard corals
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- if coral moves with current its a soft coral
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- Octocorallia (8 tentacles) are soft coral
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- He
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Write down:
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- shape
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- Lightest area
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- Darkest area
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- Dive site
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- Weather
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- Depth
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- Temperature
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- Date & time
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# Survey Entry
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Www.coralwatch.org
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![[image 8.jpg]] |