Published on September 16, 2008
What is an Ecosystem? Ecosystems are interdependent communities of plants and animals together with the habitat to which they have adapted – a natural unit with biotic and abiotic components that interact.
It is like a tapestry. The Bayeux Tapestry WHY?
Biotic and Abiotic Factors plants relief climate light nutrients minerals air water fungi bacteria soil animals geology Abiotic Factors Biotic Factors
Ecosystems exist at a range of scales
Small Scale – Micro - Ecosystems Under a rock A pond A hedgrow
Large Scale – Macro - Ecosystems The Tropical Rainforest Biome The Desert Biome The largest scale ecosystems can be considered as BIOMES – a major subdivision of the earths biosphere identified by a shared, characteristic plant community, adapted to the environmental conditions of the region.
The Worlds Biomes
The Systems Approach Ecosystems are complex natural systems that exist in a state of dynamic equilibrium. They are resilient to change. However they can also be very vulnerable to change.
Ecosystems are complex natural systems that exist in a state of dynamic equilibrium.
They are resilient to change.
However they can also be very vulnerable to change.
It can get pretty complex!
Don’t forget the basic components of an ecosystem
Key Terms Summary Biomass Habitat Community Biotic / abiotic Organic / inorganic Biome Systems approach Feedback Biodiversity Biosphere (ecosphere)
Biotic / abiotic
Organic / inorganic
BUT Why do we study ecosystems?
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Unit 4: Ecosystems // Section 1: Introduction. ... // Section 1: Introduction // next section About This Course; Using This Site; Site Map; Home;
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What is an Ecosystem? An ecosystem includes all of the living ... Human activities have also contributed to the disturbance of many ecosystems and biomes.
Unit 4 : Ecosystems -1- www.learner.org Unit 4 : Ecosystems Elk in Yellowstone National Park. Overview Why are there so many living organisms on Earth, and so