GROUP 4 - 探究式郊野研習 Investigatory Field...
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GROUP 4 CLEMENCE SHARON TIVONA EVLYN DOROTHY BIOLOGY FIELD TRIP PRESENTATION
Transcript of GROUP 4 - 探究式郊野研習 Investigatory Field...
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G R O U P 4C L E M E N C ES H A R O NT I V O N AE V L Y ND O R O T H Y
B I O L O G Y F I E L D T R I P P R E S E N T A T I O N
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3 S P E C I E S
• Large stream snail
• Water Skater
• Damselfly Nymph
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L A R G E S T R E A M S N A I L
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W H A T W E F O U N D
• Large stream snail
• Live in stream
• Herbivore
• Detritivore
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W A T E R S K A T E R
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W H A T W E F O U N D
• Rely on surface tension of water
• Fast reaction
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D A M S E L F L Y N Y M P H
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W H A T W E F O U N D
• Live in stream, freshwater wetland and fish ponds
• Carnivore
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D I S T R I B U T I O N O F T H E T H R E E S P E C I E S
0
2.5
5
7.5
10
12.5
Sighting Searching Quadrat
Snail NymphWater skater
Snail SnailNymph NymphWater skater
Water skater
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D I S T R I B U T I O N
0
0.25
0.5
0.75
1
1.25
Water Surface Underwater
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A D A P T A T I O N S
F A S T F L O W I N G W A T E R
A V O I D / D E F E N D P R E D A T O R S
L A R G E S T R E A M S N A I L
W I T H S U C K E R - L I K E B O D Y S T R U C T U R EM U S C U L A R B O D Y
B E A R I N G H A R D S H E L L SC A M O U F L A G E
H I D I N G U N D E R S H E L T E R
D A M S E L F L Y N Y M P H
S T R E A M L I N E D B O D YS M O O T H B O D Y
S U F R A C E
C A M O U F L A G EH I D I N G U N D E R
S H E L T E R
W A T E R S K A T E RF L A T T E N E D
B O D Y
F A S T R E A C T I O N S E N S I T I V E T O
S U R R O U N D I N G
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I N T E R R E L A T I O N S H I P B E T W E E N T H E S E S P E C I E S A N D O T H E R O R G A N I S M S
• Predatory relationship
W A T E R S K A T E R
D A M S E L F L Y N Y M P H
L A R G E S T R E A M
S N A I L
P R E YI N S E C T S O N
W A T E R S U R F A C E
I N S E C T S ( D E C O M P O S E R )
P R E D A T O RB I R D S A N D
F I S HF R O G S A N D
B I R D S
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T H A N K Y O U : D
