Ecology/Biodiversity Flashcards

(30 cards)

0
Q

Biotic

A

The living

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1
Q

Community

A

A group of Biotic species

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2
Q

Abiotic

A

Non-living

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3
Q

Keystone Species

A

Species upon which a community is dependent

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4
Q

Watershed

A

All land that drains into a river system

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5
Q

Trophic Level 1

A

Producers

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6
Q

Trophic Level 2

A

Primary consumer

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7
Q

Trophic Level 3

A

Secondary Consumer

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8
Q

Trophic Level 4

A

Tertiary Consumer

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9
Q

Eutrophication

A

Excess richness of nutrients in a lake or other body of water

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10
Q

Competitive Exclusion Principle

A

Survival of the Fittest

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11
Q

Niche

A

A species job

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12
Q

Habitat

A

A species home

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13
Q

Fundamental Niche

A

A species potential niche

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14
Q

Realized Niche

A

The niche the species actually takes up (smaller than possible usually)

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15
Q

Symbiotic Mutualism

A

Organisms benefit each other

16
Q

Commensalism

A

One benefits, the other is unharmed

17
Q

Parasitism

A

One organism benefits, one is negatively affected

18
Q

Resource Partitioning

A

Organization; species sharing resources and avoiding competition

19
Q

Genetic Drift

A

A change in the gene frequency not caused by natural selection

20
Q

Species

A

A group of individuals that share, or can share, from a common gene pool

21
Q

Speciation

A

Formation of a new or distinct species in the course of evolution

22
Q

Bioaccumulation

A

When pollutants enter a food chain

23
Q

Biomagnification

A

The concentration of toxins in an organism as a result of its ingesting other plants or animals in which the toxins are more widely dispersed

24
Geographic Isolation
Physical barrier that separates species
25
Charles Darwin
Famous for creating the theory of Natural Selection
26
Biodiversity
The variety of living organisms in an area
27
Evolution
The printable changes that shape the appearance and function of an organism over time
28
4 observations leading to natural selection
1. All species produce offspring 2. Variability between individuals 3. The environment is always changing 4. This variability can be inherited
29
Specialization
An adaptation of a body part to a particular function or of an organism for life in a particular environment