Hello
guys! Today, lets talk about PRINCIPLES OF ECOLOGY. Before we go
further into this topic, do you know what is ecology? Ecology is a
systematic study of organisms and their interactions with the
environment. This also reveals the relationships between living and
non-living parts of the environment.
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| Hierarchy in Ecology |
The
factors that may act as limiting factors includes :
Abiotic
- Temperature
- Sunlight
- Water
- Wind
- Rocks and soil
- Periodic disturbances (eg: rain & earthquake)
Biotic
- Animals
- Plants
- Microorganisms
Homeostasis
is a dynamic balance of processes materials and organisms in the
ecosystem and biosphere. The conversion of energy is never 100%
efficient. Roles of microbes in the ecosystems are :
- Oxygen producer
- Nitrogen fixer
- Recyclers of dead materials
- Source of food in the food chain
- Contribute to evolution: remove weaker species through infections
The
approaches for more effective Ecosystem Management
- Stakeholders
- Adaptive management
- Natural resource management
- Strategic management
- Landscape level conservation
- Command and control management
We
also learned about Biogeochemical Cycle include Nitrogen cycle, Iron
cycle, Carbon cycle, Sulphur cycle and Manganese cycle.
Next
week will be our last week with Dr. Wan before the final exam~
