IB Biology Topic D4.2.4 Use of a Model to Investigate the Effect of Variables on Ecosystem Stability Revision Notes (SL/HL)

IB Biology Topic D4.2.4 Use of a Model to Investigate the Effect of Variables on Ecosystem Stability Revision Notes (SL/HL) | RevisionDojo

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Mesocosms Are Miniature Ecosystems Built to Test What Affects Stability

How would you build a tiny ecosystem in a jar that keeps itself alive for months?
A mesocosm is a controlled, small-scale model of a natural ecosystem used to test how variables affect its stability.
Because everything inside is set up and measured by the researcher, a mesocosm lets you change one factor and watch how the whole system responds.

Definition

Mesocosms

Mesocosms are controlled experimental systems that replicate natural ecosystems, allowing scientists to study how variables like nutrient cycling and energy flow affect stability.

A Working Mesocosm Needs the Same Four Components as a Real Ecosystem

A mesocosm only stays self-sustaining if it contains every part that cycles energy and matter in a real ecosystem.
Autotrophs (producers)
1. Plants or algae capture light and produce oxygen and organic matter.
Consumers
1. Herbivores and carnivores feed through the food web.
Decomposers
1. Bacteria and fungi break down waste and recycle nutrients.
Abiotic factors

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Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

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Mesocosms Are Miniature Ecosystems Built to Test What Affects Stability

How would you build a tiny ecosystem in a jar that keeps itself alive for months?
A mesocosm is a controlled, small-scale model of a natural ecosystem used to test how variables affect its stability.
Because everything inside is set up and measured by the researcher, a mesocosm lets you change one factor and watch how the whole system responds.

Definition

Mesocosms

Mesocosms are controlled experimental systems that replicate natural ecosystems, allowing scientists to study how variables like nutrient cycling and energy flow affect stability.

A Working Mesocosm Needs the Same Four Components as a Real Ecosystem

A mesocosm only stays self-sustaining if it contains every part that cycles energy and matter in a real ecosystem.
Autotrophs (producers)
1. Plants or algae capture light and produce oxygen and organic matter.
Consumers
1. Herbivores and carnivores feed through the food web.
Decomposers
1. Bacteria and fungi break down waste and recycle nutrients.
Abiotic factors

Definition

Paywall

(on a website) an arrangement whereby access is restricted to users who have paid to subscribe to the site.

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Note

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam quis nostrud exercitation.

Excepteur sint occaecat cupidatat non proident

Tip

Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

A - Unity and Diversity9 subtopics

B - Form and Function10 subtopics

C - Interaction and Interdependence9 subtopics

D - Continuity and Change12 subtopics

IB Biology Topic D4.2.4: Use of a Model to Investigate the Effect of Variables on Ecosystem Stability Notes

Mesocosms Are Miniature Ecosystems Built to Test What Affects Stability

A Working Mesocosm Needs the Same Four Components as a Real Ecosystem

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account

Mesocosms Are Miniature Ecosystems Built to Test What Affects Stability

A Working Mesocosm Needs the Same Four Components as a Real Ecosystem

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account

A - Unity and Diversity9 subtopics

B - Form and Function10 subtopics

C - Interaction and Interdependence9 subtopics

D - Continuity and Change12 subtopics