E F F E C T S O F R I V E R B E D S U B S T R AT E C O M P O S I - - PowerPoint PPT Presentation

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Sep 12, 2022 28 likes •180 views

A N I M A L S P E C I E S A S S O C I A T E W I T H R I V E R B E D S U B S T R A T E E F F E C T S O F R I V E R B E D S U B S T R AT E C O M P O S I T I O N O N T H E A N I M A L S H Y P O T H E S I S The larger the size of

SLIDE 1

E F F E C T S O F R I V E R B E D S U B S T R AT E C O M P O S I T I O N O N T H E A N I M A L S

A N I M A L S P E C I E S A S S O C I A T E W I T H R I V E R B E D S U B S T R A T E

SLIDE 2

The larger the size of substrates, the more the animal species can be found.

H Y P O T H E S I S

SLIDE 3

M AT E R I A L S

Light meter
Water flow meter
Digital thermometer
Metal sieve
Quadrat

SLIDE 4

R I V E R B E D S U B S T R AT E C O M P O S I T I O N

M E T H O D S

We have chosen 3 quadrats for sampling.

Estimate the relative

amount of different subtrates

Measure the diameter of

substrate particles

SLIDE 5

A N I M A L S P E C I E S

M E T H O D S

Observe the animal species in the three quadrets

SLIDE 6

VA R I A B L E S

Independent variable : River bed substrate composition Dependent variable : animal species Controlled variables: water flow rate Water depth Light intensity Abundance of water plants

SLIDE 7

C O N T R O L L E D VA R I A B L E S

M E T H O D S

Controlled Variables Apparatus Temperature Digital Thermometer Light Intensity Light Meter Water Flow Rate Water Flow Rate Meter

SLIDE 8

C O N T R O L L E D VA R I A B L E S

M E T H O D S

Variables/Quadrat 1 2 3 Temperature （Degree Celsius） 24.8(Water) 25.1(Air) 20.9 (Water) 24.6 (Air) 21.6(Water) 24.3 (Air) Light Intensity 260 X 100 270 X 100 220 X 100 Water Flow Rate (M/S) 0.21 0.20 0.29

SLIDE 9

R I V E R B E D S U B S T R AT E C O M P O S I T I O N

R E S U LT S

Quadrat 1 2 3 Mud And Sand Medium Much Much Granule And Pebble Medium Many Medium Cobble And Boulder Many Few Medium

SLIDE 10

Q U A D R AT 1

G O B Y
S U C K E R - B E L LY L O A C H
T O O T H E D B E E S H R I M P
WAT E R S K AT E S

R E S U LT S - A N I M A L S P E C I E S

SLIDE 11

Q U A D R AT 2

WAT E R S K AT E R
L A R G E S T R E A M S N A I L

R E S U LT S

SLIDE 12

🙆

Q U A D R A T 3

SLIDE 13

T H E L A R G E R T H E S I Z E O F S U B S T R AT E S PA R T I C L E S , T H E M O R E T H E A N I M A L S P E C I E S C A N B E F O U N D .

A N A LY S I S

SLIDE 14

T H E L A R G E - S I Z E D PA R T I C L E S P R O V I D E S H E LT E R F O R A N I M A L S .

A N A LY S I S

SLIDE 15

T H A N K Y O U ❤️ ❤️ 🐢 🐍 🐛 🐠 🐹 🐎