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conservation of natural resources final > Biotic Distribution > Flashcards

Biotic Distribution Flashcards

1
Q

Biota

A

the total complex of plant and animal life

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2
Q

Highest level of the biota?

A

Kingdom

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3
Q

What is the kingdom made up of?

A

all plants, all animals, all microorganisms

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4
Q

Lowest level of the biota

A

species

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5
Q

What is the species made up of

A

only one organism

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6
Q

Species?

A

organisms that look the same and are capable of successful reproduction

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7
Q

Environmental Influences of the distribution of terrestrial biota

A

Climate, Soil Characteristics, Topographic Factors, Catastrophic Events

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8
Q

Biographical Influences of terristrial biota

A

Evolutionary development, migration, reproductive success, displacement, extinction

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9
Q

Isotherm

A

a line on a map connecting points of equal temperature

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10
Q

Natural Selection

A

“survival of the fittest”

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11
Q

Gene pool

A

the sum of all genes of all people in a population

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12
Q

Migration

A

the movement of organisms from one point to another

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13
Q

Displacement

A

the naturally occuring, greadual removal of a species from an area

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14
Q

Plant Succession

A

involves a series of temporary situations whereby one type of vegetation is naturally replaced another over time

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15
Q

bioaccummulation

A

the buildup of pollutants such as ddt in organisms

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16
Q

Human Influences of distribution of Biota

A

Loss of habitat, fragmentation of habitat, substitution of species, simplification, trans-location, contamination of environment

17
Q

Species Diversity

A

Total number of species in a geographic area

18
Q

Genetic Diversity

A

maintenence of genetic characteristics in the gene pool of a species

19
Q

Habitat Diversity

A

the number of different kinds of living environments in a given area

20
Q

Community Diversity

A

number of different groups in a species

21
Q

How many species are there?

A

1.8 million

22
Q

Extirpation

A

disappearance of a species over a large part of its former range

23
Q

How many mammal species are extinct

A

21%

24
Q

How many bird species are extinct?

A

13%

25
Q

How many amphibian species are extinct?

A

30%

26
Q

Characteristics of extinction prone animal species

A

Low population, Specialized diet, Large body, Need for specific habitat, cannot adapt to change

27
Q

Major human factors causing extinction

A

1) degradation
2) commercial market hunting
3) predator and pest control
4) wildlife trade
5) invasive species
6) pollutio

28
Q

1900 lacey act?

A

prohibits transporting live or dead wild animals

29
Q

Endangered species act 1973

A

protects any member of plant or animal species

30
Q

International Union for the protection of Nature and Natural Resources 1934

A

assigned problem species to one of five categories (endangered, threatened, rare, out of danger, indeterminite)

conservation of natural resources final (6 decks)

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