Chapter 5 Environmental Systems and Ecosystem Ecology Flashcards Preview

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Flashcards in Chapter 5 Environmental Systems and Ecosystem Ecology Deck (13):
1

System

Network of relationships among parts, elements, or components that interact with and influence one another through exchange of energy, matter, and information

2

Feedback loop

Output of system is also its input

3

Negative feedback loop

Output as input drives system other way

4

Positive feedback loop

Output as input drives system in same direction

5

Emergen properties

Characteristics not evident in components alone. Sum greater than whole

6

Airshed

Geographic area that produces air pollutants that are likely to end up in a waterway

7

Eutrophication

Process of nutrient over-enrichment, blooms of algae, increased production of organic matter, and subsequent ecosystem degradation

8

Estuary

Waterbody where rivers flow into ocean, mixing fresh with salt water

9

Nutrients

Elements and compounds that organisms consume and require for survival

10

Macro vs micro nutrients

large amounts; small amounts

11

Ecotones

Areas where ecosystems meet and consist of transitional zones

12

Metapopulation

Members that move/mate between patches of landscape

13

Ecosystem services examples

Regulate oxygen, CO2; prevent soil erosion; cycle nutrients; pollination; tourism