Chapter 2 Flashcards

energy+ecosystems

1
Q

radiant energy

A

from the sun ->chemical E (like food)->mechanical->pysical activities

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2
Q

energy

A

capacity to do work (measured in calories)

exists as kinetic E and chemical E

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3
Q

high-quality energy

A

easy to use, E disperses quickly

gas

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4
Q

low-quality energy

A

difficult to gather, disperses slowly (at low temp)

heat

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5
Q

the first law of thermodynamics

A

E can not be created or destroyed

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6
Q

2nd law- entropy

A

through transformation, some E is lost

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7
Q

niche

A

interactions of a species with the other members of its community, including competition, predation, parasitism, and mutualism. A variety of abiotic factors, such as soil type and climate, also define a species’ niche.

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8
Q

fundamental niche

A

where a species can possible habitat (possible range)

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9
Q

realized niche

A

the range it actually occupies

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10
Q

habitat

A

where species lived

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11
Q

competitive exclusion principle

A

no two species can occupy the same niche in the same are

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12
Q

limiting factor

A

all factors for growth must be available in certain minimum

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13
Q

generalist species

A

broad niche and can easily adapt to changing habitat

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14
Q

keystone species

A

a strong influence on the whole community

without, ecosystem collapse

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15
Q

extirpated

A

keystone species removed

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16
Q

endemic species

A

found nowhere else on earth