Lecture 33/34-Ecosystem Ecology & Conservation Ecology Flashcards Preview

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Flashcards in Lecture 33/34-Ecosystem Ecology & Conservation Ecology Deck (40):
0

Sum of all the organisms living within its boundaries and all the abiotic factors with which they interact.

Ecosystem

1

Ecosystem dynamics involve:

Energy flow and chemical cycling

2

What are the 5 different trophic levels?

Primary producers, primary consumers, secondary consumers, tertiary consumers, and decomposers

3

Ultimately support all others within ecosystems.

Primary producers

4

4 examples of primary producers are:

Autotrophs, plants, algae, and photosynthetic prokaryotes

5

Herbivores.

Primary consumers

6

Carnivores eating herbivores

Secondary consumers

7

Carnivores eating carnivores

Tertiary consumers

8

Consumers that get their energy from detritus and detritivores.

Decomposers

9

What is detritus?

Nonliving organic materials

10

What are detritivores?

Prokaryotes and fungi

11

Primary production is the amount of light energy converted into chemical energy by:

Autotrophs

12

How is primary production measured?

Energy per unit area per unit time OR biomass added to the ecosystem per unit area per unit time

13

Primary production sets __________ __________ on ecosystem complexity.

Upper limit

14

GPP =

Gross primary product

15

NPP =

Net primary production

16

R =

Autotrophic respiration

17

Only _____ is available to consumers.

NPP

18

Which ecosystem has high NPP?

Tropics

19

The amount of chemical energy in consumer's food that is converted to their own new biomass during a given time period.

Secondary production

20

How efficient the organism is at energy transformation is measured by what?

Production efficiency

21

Energy transfer between trophic levels is only about _____% efficient.

10%

22

Percentage of production transferred from on trophic level to the next.

Trophicefficiency

23

Chemical elements are available only in:

Limited amounts

24

These are only available in limited amounts:

Chemical elements

25

Chemical cycle which involves both biotic and abiotic components of ecosystems.

Biogeochemical cycle

26

Gaseous forms of carbon, oxygen, sulfur, and nitrogen in the atmosphere:

Global cycle

27

Phosphorus, potassium, calcium (too heavy).

Local cycle

28

Human alteration of habitat.

Habitat destruction

29

Species that humans move (intentionally or accidentally) from species' native locations to new geographic locations.

Introduced

30

Human harvesting of wild organisms at rates exceeding at ability of populations to rebound.

Overexploitation

31

Overexploitation lead to loss of:

Biodiversity

32

Our sense of connection to nature and other forms of life.

Biophilia

33

All the processes through which natural ecosystems help sustain human life on earth.

Ecosystem services

34

Exceptional concentration of endemic species and large numbers of endangered and threatened species.

Biodiversity hotspots

35

National parks, state parks.

Nature reserves

36

Extensive undisturbed regions surrounded by areas that have been changed by humans and are used for economic gain.

Zoned reserve

37

Use of organisms to detoxify polluted ecosystems.

Bioremediation

38

Use of organisms to add essential materials to a degraded ecosystem.

Biological augmentation

39

What organisms are used in bioremediation?

Prokaryotes, fungi, and plants