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Mon. Tues. Wed. Thurs. Fri.Week ofOct. 6

Indoor lab – bring calculator

Week ofOct. 13

No labs – Fall Break

Week ofOct. 20

Wet, muddy outdoor lab – wear closed-toed shoes

Week ofOct. 27

Independent project set-up

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Structure of course

Environmental variability

Organisms

Ecosystems

Populations

Species interactions

Communities

Applied Ecological Issues

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Outline for ecosystems

Introduction

How does energy move through an ecosystem?

How does matter move through an ecosystem?

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5

What happens to net primary production?

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Figure 6.2

Herbivore

Herbivore

Carnivore

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Figure 6.1

Primary producers

Primary consumers

Secondary consumers

Tertiary consumers

Trophic pyramid

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Ecological/food chain efficiency = the

percentage of energy in the biomass produced

by one trophic level that is incorporated into the

biomass produced by the next higher trophic

level

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Ecological/food chain efficiency = exploitation

efficiency x gross production efficiency

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How fast does energy move through an ecosystem?

Biomass accumulation ratio = biomass / rate of biomass production

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Figure 6.13

loweston land

standing biomassbiomass production rate

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Ecosystem Management

- process of sustaining ecosystems, their processes, and the services they provide for future generations

- example of Lake Mendota

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Outline for ecosystems

Introduction

How does energy move through an ecosystem?

How does matter move through an ecosystem?

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How does matter move through an ecosystem?

Matter = elements

e.g., what are ways that a carbon atom movesfrom one compartment of an ecosystem to another?

How fast do carbon atoms move from one compartment to another?

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Organisms move elements through chemical transformations

organic C inorganic C

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Figure 7.1

inorganicinorganic

organic organic

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Figure 7.2

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How does matter move through an ecosystem?

Cycles between inorganic and organic forms andbetween different compartments of ecosystems

Difference between matter and energy movement?

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Figure 7.3

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Cycles of matter

watercarbonnitrogenphosphorussulfur

Focus on important pools and transfers

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Figure 7.4

Water cycle

24Figure 7.5 Carbon cycle

C cycle

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Figure 7.6

Biological transformations of carbon

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Fig. 7.11

N cycle

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Figure 7.11be.g., proteins inorganic forms

used by plants

Biological transformations of nitrogen

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Figure 7.13

P cycle

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Figure 7.14a S cycle

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Figure 7.14b

Biological transformations of sulfur

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What do I expect you to know about element cycles?

- which forms are available to bacteria, plants,and animals

-which transfers are changes in form of theelement

- which transfers are biological transfers vs. chemical or physical transfers