Ecology is the study of the relationships between organisms and their environment. An ecosystem is a community of interdependent organisms and their environment, and can vary in size from a puddle to the ocean. Both abiotic (non-living) factors like temperature, water, and sunlight, and biotic (living) factors like predation influence ecosystems. Desert ecosystems are typically hot and dry with little rainfall, and organisms within them have adaptations for water conservation like waxy leaves or living in burrows.

1. Darshil Modi Present…

2. Ecosystems

3. What is Ecology?
• Ecology is the study of the
interrelationships between
living organisms and their
physical and biological
environment.

4. What is an ecosystem?
• Ecosystem is a community of
interdependent organisms
together with the environment.

5. However……..
• An ecosystem can be as large as the
Ocean, or as small as a puddle!!!
• Ecosystems are more than just the
organisms they contain.
Geography,weather,climate and
geologic factors also influence the
interactions within an ecosystem.

6. Abiotic Factors
• Are nonliving physical
factors of an environment.
• Abiotoic Factors include amount of water
and oxygen, temperature, amount of
sunlight and water pressure.

7. Biotic Factors
• Are the living, physical
factors of an environment.
• Examples of Biotic Factors are parasitism,
disease and predation.

8. Different Types Of Ecosystem
• Desert Ecosystem
• Grass Land Ecosystem
• Forest Ecosystem
• Aquatic Ecosystem

9. Desert
Ecosystem

10. Desert – an ecosystem found where
there is very little rainfall
 Deserts are dry and hot.There are very few clouds.
 Two kinds of deserts:
 Hot deserts
 Cold deserts
 Hot deserts
 Temperatures are very warm all year round
 The summers are very hot
 Cold deserts
 Short, warm summers
 Long, cold winters
 Found in places near the north and south poles

11. Desert Plants
 Deserts plants are having most typical
adaptations for conservation of water.
 Many times their stem gets flattened and
develops chlorophyll so that they can take
up the function of photosynthesis.
 Some plants have a waxy , thick cuticle
over a leaf to reduce the loss of water due
to transpiration.

13. Desert Animals
 Deserts animals are having most typical
adaptations for conservation of water.
 Desert animals like insects reptiles have thick
covering to minimize loss of water.
 They usually live inside burrows.

15. Thank
You