Ecology&BiosphereLEC36 Flashcards

1
Q

Homo sapiens

A
  • appeared in Africa at least 130,000 years ago

- began colonizing the world beyond Africa about 60,000 years ago

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2
Q

Homo neanderthalensis

A
  • lived in Europe from 20-30,000 years ago. Surviving several ice ages.
  • large hominins with larger brains than ours
  • study suggests that early humans ate neanderthals
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3
Q

Clovis

A

people who invaded the New World about 18,000 years ago

*large animals disappear because of them

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4
Q

Ecology

A

study of the interactions between organisms and the environment

  • determine organisms’ distribution & abundance
  • provides the scientific understanding behind environmental issues
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5
Q

Events that occur in ecological time…

A

affect life on the longer scale of evolutionary time

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6
Q

the environment includes what components?

A

–Abiotic, nonliving components

–Biotic, living components

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7
Q

what are biota?

A

the organisms living in the environment

including fauna & flora

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8
Q

biosphere

A

part of the Earth where life is possible

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9
Q

Landscape ecology

A

Examines combinations of ecosystems

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10
Q

Community ecology

A

Examines the interacting species within a

community

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11
Q

Climate

A

prevailing weather in an area over time

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12
Q

Four major components of climate

A

–Temperature
–Water
–Sunlight
–Wind

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13
Q

what is a key factor in biogeography?

A

Temperature

ex. the pika is moving a lot due to change in temperature, will be extinct when no where else to go

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14
Q

Biomes

A

the major habitats that cover the planet

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15
Q

Aquatic biomes

A

Cover the largest part of the biosphere, about 75% of Earth’s surface

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16
Q

oligotrophic lake

ex. Wyoming

A

lake with few nutrients & plants with clear waters

17
Q

eutrophic lake

ex. Botswana

A

lake with nutrients & plants