Describing ecosystem services

1. ECOSYSTEM &IT’S
SERVICES
https://www.youtube.com/watch?v=MWPj2IkeklI

2. What is
ecosystem?
A system is a group of interacting or
interrelated entities that form a unified whole
What is an ecosystem?
An ecosystem is a community of living
creatures (plants, animals (including humans),
and microorganisms) in a certain region. Each
member of the ecosystem interacts with each
other and the non-living parts of its
environment, such as water, air, climate, and
geographic features.

3. Types of
ecosystem

4. TERRESTRIAL
ECOSYSTEMS

5. AQUATIC
ECOSYSTEMS

6. COMPONENTS OF
ECOSYSTEM

7. BIOTIC
COMPONENTS

9. FUNCTIONS
OF
ECOSYSTEM

10. ECOSYSTEM
SERVICES
https://www.youtube.com/watch?v=BCH1Gre3Mg0

11. Definition
Ecosystem services are the benefits provided to humans through the
transformations of resources (or environmental assets, including land, water,
vegetation and atmosphere) into a flow of essential goods and services e.g.
clean air, water, and food (Constanza et al. 1997).

12. Ecosystem
services
• Ecosystem services are the many and varied
benefits that people obtain from ecosystems. In
2005, the Millennium Ecosystem Assessment
identified and categorized ecosystems and their
resulting services
• The Millennium Ecosystem Assessment framework
identified ecosystem services within four categories
• provisioning services, such as food and water
• regulating services, such as flood and disease
control
• supporting services, such as nutrient cycling, that
maintain the conditions for life on Earth, and
• cultural services, such as spiritual, recreational, and
cultural benefits

13. Provisioning
services
Provisioning services (mostly food and fiber
commodities) along with the supporting
services that need to be replaced in order to
these services to continue to flow, e.g.
fertilizers to replace natural soil fertility,
pesticides to replace natural pest control, have
long been included in market economics.

14. Regulating
services
Regulating services where some of these
services, e.g. pest regulation, seed dispersal,
disease regulation and erosion regulation,
have been artificially supplied and counted as
costs of production. Other services, such as
climate control, have been outside the market
but are now being priced and integrated into
markets, the most notable is carbon
sequestration.

15. Supporting
services
Supporting services of which most have
traditionally been unvalued, although their
importance has been acknowledged through
government investment in soil and biodiversity
conservation. Others, such as water for
environmental flows, are the subject of
emerging markets.

16. Cultural
services
Cultural services include knowledge of country
and place, which is important to Indigenous
people. Another example is nature-based
tourism that has significant economic value.
However, many cultural services, whilst clearly
valued, have not been explicitly priced or
included in markets.

17. REVISION
• Write an example of ecosystem.
Explain components and functions of it.
Find out the services provided by that
ecosystem

18. Points to
remember
Ecosystem definition
Components of ecosystem – biotic
&abiotic
Functioning of ecosystem – producers,
consumers, decomposers, material
cycles
Ecosystem services- provisioning
services, regulating services,
supporting services, cultural services

19. Test questions
• What is ecosystem? Explain its
functions
• Explain different types of ecosystem
services

20. Notes
• https://docs.google.com/document/d/1W0i
kkRhcH3c2sqFA3tu-
2xRSPReMK6OHXGNam2cLJb4/edit?usp=sha
ring

21. THANK YOU !!