estuary survival the rules of life. the players dungeness crab – cancer magister 5mm across...
TRANSCRIPT
![Page 1: Estuary Survival The Rules of Life. The Players Dungeness crab – Cancer magister 5mm across carapace – megalops 12mm across carapace – 1 st instar 20mm](https://reader031.vdocument.in/reader031/viewer/2022020102/56649c805503460f949376ec/html5/thumbnails/1.jpg)
Estuary Survival
The Rules of Life
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The Players
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Dungeness crab – Cancer magister
• 5mm across carapace – megalops
• 12mm across carapace – 1st instar
• 20mm across carapace - juvenile
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Coho salmon – Oncorhynchus kisutch
• 35mm fork length – parr
• 50mm fork length – smolt
• 65mm fork length - juvenile
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Predator/prey cards
•The Striped Bass represents a non-native fish.
•These fish appear on the predator/prey cards.
•Predator/prey cards describe a situation with consequences for crabs and salmon in the estuary depending on factors such as your size and location.
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Estuary condition cards
• Estuary condition cards describe the tides and different factors that will impact life in the estuary.
• The habitats below the low tide line include only the open water channel and the eelgrass meadows.
• If you’re crab or salmon occupies a square that has any of a particular kind of habitat in it, you may claim that habitat. For example, if you have any bright green eelgrass in your square, you are protected by the eelgrass.
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Estuary Survival gameboard
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Estuary Survival gameboard
Low tide lines
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Estuary Survival gameboard
Estuary zones
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Estuary Survival gameboard
Habitat legend
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Habitat and tide zones
• The estuary playing board is divided into three areas – low, mid, and upper estuary which are divided by lines across the board.
• The low tide line is marked in black.• The habitat zones cross over these areas.• To claim a habitat, at least 50% of your square must be
covered by this habitat.• Four habitat zones exist
– Eelgrass (bright green)– Open water (blue)– Mudflats (brown)– Salt marsh (dark green)
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Your scorecard
• Investigator’s name
• Common name of the animal
• Genus and species
• Size and life stage
• Three questions
• Scoring box for each round
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Tokens are worth 20 points each
35mm salmon smolt
50mm salmon smolt
65mm salmon smolt
5mm crab megalops
12mm crab larva
20mm crab larva
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sample scoring for 3 rounds
Position Habitat Fate
C7 Eelgrass My crab survived an oil spill because he was in the mid-estuary.
C7 Eelgrass My crab survived because the eelgrass provided cover from cormorants.
C7 Eelgrass My crab grew one size class because the high tide brought food from the ocean.
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Graphing survivorship
Survived round 1
8 crabs
5mm
5 crabs
12mm
6 salmon
35mm
3 salmon
65mm
Survived round 2
Survived round 3
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0
2
4
6
8
10
12
surviving individuals
round 1 round 2 round 3 round 4
rounds
Estuary survivorship
crab 5mm
crab 12mm
crab 20mm
salmon 35mm
salmon 50mm
salmon 65mm