The Differences of a Desert Ecosystem From a Forest Ecosystem · Forests may have numerous rivers...

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THE DIFFERENCES OF A DESERT ECOSYSTEM FROM A FOREST ECOSYSTEM

Transcript of The Differences of a Desert Ecosystem From a Forest Ecosystem · Forests may have numerous rivers...

Page 1: The Differences of a Desert Ecosystem From a Forest Ecosystem · Forests may have numerous rivers and streams that flow beneath the soil. There are few water sources in the desert,

T H E D I F F E R E N C E SO F A D E S E R TE C O S Y S T E M

F R O M A F O R E S TE C O S Y S T E M

Page 2: The Differences of a Desert Ecosystem From a Forest Ecosystem · Forests may have numerous rivers and streams that flow beneath the soil. There are few water sources in the desert,

E C O S Y S T E M

I s d i v i d e d i n t o

t w o t y p e s :

- L i v i n g

- N o n - l i v i n g

Page 3: The Differences of a Desert Ecosystem From a Forest Ecosystem · Forests may have numerous rivers and streams that flow beneath the soil. There are few water sources in the desert,

T h r e e M a i n D i f f e r e n c e s :

1 . P r e s e n c e o f W a t e r

    2 . V e g e t a t i o n

  3 . V a r i e t y o f A n i m a l s

Page 4: The Differences of a Desert Ecosystem From a Forest Ecosystem · Forests may have numerous rivers and streams that flow beneath the soil. There are few water sources in the desert,

D E S E R T S A N D F O R E S T S

D e s e r t s a n d f o r e s t s h a v e t w o v e r y d i s t i n c t t y p e s o f b i o m e s . W h i l e b o t h c o n t a i n a l l t h e e l e m e n t s n e c e s s a r y t o s u p p o r t l i f e ( w a t e r , v e g e t a t i o n , a n d h e a t ) , t h e y d o s o i n d i f f e r e n t w a y s .

D u e t o t h e s e d i f f e r e n c e s , t h e l i f e t h a t d e v e l o p s i n e a c h e n v i r o n m e n t i s v e r y d i f f e r e n t a n d a d a p t e d f o r s u r v i v a l i n t h e i r b i o m e .

Page 5: The Differences of a Desert Ecosystem From a Forest Ecosystem · Forests may have numerous rivers and streams that flow beneath the soil. There are few water sources in the desert,

Forests may have numerous rivers and streams that flow beneath the soil. There are few water sources in the desert, and they may be situated hundreds of kilometers away.

Tundras, which are technically classified as a type of desert, may contain significant amounts of snow, but there is a lack of liquid water.

1 . T H E P R E S E N C E

O F W A T E R

Page 6: The Differences of a Desert Ecosystem From a Forest Ecosystem · Forests may have numerous rivers and streams that flow beneath the soil. There are few water sources in the desert,

Forest flora is diverse. The vegetation in deserts is simpler than in forests. On the other hand, some deserts can have many plant species that have adapted to harsh conditions, while other deserts may have only a small variety of plants.

2 . V E G E T A T I O N

Page 7: The Differences of a Desert Ecosystem From a Forest Ecosystem · Forests may have numerous rivers and streams that flow beneath the soil. There are few water sources in the desert,

D E S E R T E C O S Y S T E M

T y p i c a l p l a n t s a r e e p h e d r a , c a c t i . T h e r e a r e w o r m w o o d , a c a c i a , c a m e l t h r o n .

T h e r e a r e m a n y f l o w e r s : t u l i p s , m a l c o l m i a , e m i n i u m a n d o t h e r s .

Page 8: The Differences of a Desert Ecosystem From a Forest Ecosystem · Forests may have numerous rivers and streams that flow beneath the soil. There are few water sources in the desert,

D E S E R T I ST h e n a m e " d e s e r t " d o e s n o t m e a n a c o m p l e t e a b s e n c e o f l i f e . S o m e a n i m a l s a n d p l a n t s a r e w e l l a d a p t e d t o l i v i n g i n a d r y c l i m a t e a n d h i g h t e m p e r a t u r e s .

H o w e v e r , c o m p a r e d w i t h f l o r a a n d f a u n a o f o t h e r e c o s y s t e m s , t h e p l a n t a n d a n i m a l w o r l d o f a d e s e r t i s e x t r e m e l y m e a g e r .

Page 9: The Differences of a Desert Ecosystem From a Forest Ecosystem · Forests may have numerous rivers and streams that flow beneath the soil. There are few water sources in the desert,

I L L U S T R A T I O N O F D E S E R T

E C O S Y S T E M

Page 10: The Differences of a Desert Ecosystem From a Forest Ecosystem · Forests may have numerous rivers and streams that flow beneath the soil. There are few water sources in the desert,

W A T E R

O n e o f t h e m o s t i m p o r t a n t l i m i t i n g

f a c t o r s o f e c o s y s t e m p r o d u c t i v i t y i s t h e l a c k

o f w a t e r . B e c a u s e o f t h e l a c k o f m o i s t u r e i n

p l a n t s , t h e p r i m a r y p r o d u c e r s a r e a t g r e a t

d i s t a n c e s f r o m e a c h o t h e r . T h e i r s m a l l t h i c k l e a v e s a r e a d a p t e d t o

t h e c o n s e r v a t i o n o f w a t e r .

Page 11: The Differences of a Desert Ecosystem From a Forest Ecosystem · Forests may have numerous rivers and streams that flow beneath the soil. There are few water sources in the desert,

F O R E S T S

B r o a d l e a f f o r e s t s a r e c o n s t i t u t e d o f

l i n d e n s , o a k s , a s h t r e e s , e l m s , m a p l e s , a n d c h e s t n u t s . T h e

f o r e s t f l o o r i s e n t i r e l y o c c u p i e d b y g r a s s a n d b e r r i e s : a

p o l e m i c i s t , a l u n g w o r t , a n d

s t r a w b e r r y .

Page 12: The Differences of a Desert Ecosystem From a Forest Ecosystem · Forests may have numerous rivers and streams that flow beneath the soil. There are few water sources in the desert,

A N I M A L S

T h e f o r e s t e c o s y s t e m m a y c o n t a i n l a r g e ,

s m a l l , o r e v e n m i c r o s c o p i c a n i m a l s . F o r e s t a n i m a l s c a n i n c l u d e m a m m a l s ,

r o d e n t s , b i r d s , r e p t i l e s , a m p h i b i a n s , a n d f i s h .

L a r g e m a m m a l s a r e m u c h r a r e r i n d e s e r t s , w h e r e l i m i t e d a m o u n t s o f f o o d a n d w a t e r a r e m o r e s u i t a b l e f o r t h e l i f e o f s m a l l r o d e n t s , r e p t i l e s , a n d i n s e c t s .

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F O R E S T A N I M A L S

A f e w s p e c i e s r e p r e s e n t t h e d e s e r t . T y p i c a l r e p r e s e n t a t i v e s a r e : c a m e l s , a n t e l o p e s , k u l a n s , j e r b o a s , s q u i r r e l s , g e r b i l s , l i z a r d s , a n d n u m e r o u s i n s e c t s .  

Page 14: The Differences of a Desert Ecosystem From a Forest Ecosystem · Forests may have numerous rivers and streams that flow beneath the soil. There are few water sources in the desert,

D E S E R T A N I M A L S

A f e w s p e c i e s r e p r e s e n t t h e d e s e r t . T y p i c a l r e p r e s e n t a t i v e s a r e : c a m e l s , a n t e l o p e s , k u l a n s , j e r b o a s , s q u i r r e l s , g e r b i l s , l i z a r d s , a n d n u m e r o u s i n s e c t s .  

Page 15: The Differences of a Desert Ecosystem From a Forest Ecosystem · Forests may have numerous rivers and streams that flow beneath the soil. There are few water sources in the desert,

T h e r o d e n t s , s u c h a s g o p h e r s , j e r b o a s , a n d g e r b i l s d i g b u r r o w s , w h i c h a l l o w t h e m t o e s c a p e

t h e h e a t . R e p t i l e s a r e w e l l a d a p t e d a s w e l l .

Page 16: The Differences of a Desert Ecosystem From a Forest Ecosystem · Forests may have numerous rivers and streams that flow beneath the soil. There are few water sources in the desert,

After a period of heavy rains, there is an increase in a number of plants, insects, and small rodents. With the onset of drought, the moisture that was stored in the tissues of the plants is gradually consumed.

A F T E R R A I N

Page 17: The Differences of a Desert Ecosystem From a Forest Ecosystem · Forests may have numerous rivers and streams that flow beneath the soil. There are few water sources in the desert,

F O R E S T E C O S Y S T E M C H A R A C T E R I S T I C S

T h e f o r e s t e c o s y s t e m i s c h a r a c t e r i z e d b y a l a r g e a m o u n t o f t r e e s , a n i m a l s , a n d w a t e r , w h i l e t h e d e s e r t h a s a l i m i t e d a m o u n t o f s p e c i e s .

Page 18: The Differences of a Desert Ecosystem From a Forest Ecosystem · Forests may have numerous rivers and streams that flow beneath the soil. There are few water sources in the desert,

T H A N K Y O U !

E S S A Y S H A R K T E A M