this is about the ecological concepts on natural resources

1. ECOLOGICAL CONCEPTS
ON NATURAL RESOURCES
September 3, 2022

2. ECOSYSTEM PROCESSES
 are the physical,
chemical, and
biological processes
that link organisms and
their environment

3. ECOSYSTEM PROCESSES
I. Energy Flow
- sometimes referred to
as the energy cycle
- refers to the transfer
of energy from one
trophic level to
another in the food
chain and food web. It
is unidirectional and
energy is lost from one
trophic level to
another in the form of
heat.
- Sunlight is the ultimate
energy source.

4. ECOSYSTEM PROCESSES
II. Water Cycle
Water cycles through the
ecosystem by some of the
processes:
• Evaporation
• precipitation
• infiltration (or
runoff/percolation)
• transpiration.

5. ECOSYSTEM PROCESSES
III. Nutrient Cycle

6. ECOSYSTEM PROCESSES
III. Nutrient Cycle
- is defined as the cyclic pathway
by which nutrients pass-through,
in order to be recycled and
reutilized. The pathway
comprises cells, organisms,
community and ecosystem
- is a cyclic process that
encompasses the movement of
nutrients from the physical
environment to living organisms
and back to the environment.
Nutrients are present on the
earth where they are recycled,
transformed into different forms
and reutilized.

7. ECOSYSTEM PROCESSES
III. Nutrient Cycle – Carbon Cycle

8. ECOSYSTEM PROCESSES
III. Nutrient Cycle – Nitrogen Cycle

9. ECOSYSTEM PROCESSES
III. Nutrient Cycle – Oxygen Cycle

10. ECOSYSTEM PROCESSES
III. Nutrient Cycle – Phosphorous Cycle

11. ECOSYSTEM PROCESSES
IV. Community Dynamics

12. ECOSYSTEM PROCESSES
IV. Community Dynamics
- are the changes to community
structure and composition over time,
including changes in microbiology,
plant and animal life, often following
environmental disturbances such as
volcanoes, earthquakes, storms, fires,
and climate change. Communities with
a relatively constant number of
species are said to be at equilibrium
- The equilibrium is dynamic with
species identities and relationships
changing over time, but maintaining
relatively constant numbers. Following
a disturbance, the community may or
may not return to the equilibrium
state.