Ecology/Biodiversity Flashcards

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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
Q

Geographic Isolation

A

Physical barrier that separates species

25
Q

Charles Darwin

A

Famous for creating the theory of Natural Selection

26
Q

Biodiversity

A

The variety of living organisms in an area

27
Q

Evolution

A

The printable changes that shape the appearance and function of an organism over time

28
Q

4 observations leading to natural selection

A
  1. All species produce offspring
  2. Variability between individuals
  3. The environment is always changing
  4. This variability can be inherited
29
Q

Specialization

A

An adaptation of a body part to a particular function or of an organism for life in a particular environment