Bio Ch 46 Flashcards

(38 cards)

1
Q

Climate

A

prevailing weather conditions in a particular region

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2
Q

Topography

A

physical features of the land

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3
Q

Rain shadow

A

leeward side (side sheltered from the wind) of a mountainous barrier, which receives much less precipitation than the windward side

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4
Q

Monsoon climate

A

wet ocean winds blow onshore for almost half the year

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5
Q

Biome

A

major terrestrial ecosystems characterized by their climate and geography; has a particular mix of plants and animals that are adapted to living under certain environmental conditions, of which climate is an overriding influence

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6
Q

Montane Coniferous Forest

A

coniferous forest of a mountain

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7
Q

Alpine Tundra

A

tundra near the peak of a mountain

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8
Q

Arctic Tundra

A

encircles the Earth just south of ice-covered polar seas in the Northern hemisphere, covers about 20% of the Earth’s land surface

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9
Q

Taiga

A

terrestrial biome that is a coniferous forest extending in a broad belt across northern Eurasia and North America

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9
Q

Taiga

A

terrestrial biome that is a coniferous forest extending in a broad belt across northern Eurasia and North America

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10
Q

Temperate rain forest

A

coniferous forest that runs along the west coast of Canada and the US

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11
Q

Temperate deciduous forests

A

found south of the taiga in eastern North America, Eastern Asia, and much of Europe

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12
Q

Tropical rain forests

A

South America, Africa, Indo-Malayan region near the equator; weather always warm, rain is plentiful

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13
Q

Epiphytes

A

plants that grow on other plants but usually have roots of their own that absorb moisture and minerals leached from the canopy

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14
Q

Shrublands

A

tend to occur along coasts that have dry summers and receive most of their rainfall in the winter

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15
Q

Chaparral

A

dense shrubland that occurs in California

16
Q

Grasslands

A

occur when annual rainfall is greater than 25cm but generally insufficient to support trees

17
Q

Temperate grasslands

A

Russian steppes, South American pampas, and the North American prairies

18
Q

Savannas

A

occurs in regions where a relatively cool dry season is followed by a hot rainy season

19
Q

Deserts

A

usually found at latitudes of about 30 degrees in both the Northern and Southern Hemispheres

20
Q

Wetlands

A

areas that are wet for at least part of the year

21
Q

Marshes

A

wetlands that are frequently or continually inundated by water

22
Q

Swamps

A

wetlands that are dominated by either woody plants or shrubs

23
Q

Bogs

A

wetlands that are characterized by acidic waters, peat deposits, sphagnum moss

24
Lakes
bodies of fresh water that can be classified by their nutrient status
25
Eutrophication
nutrient-poor (oligotrophic) lakes can become nutrient-rich through this process
26
Fall overturn
mixing process that occurs in fall in stratified lakes, whereby oxygen-rich top waters mix with nutrient-rich bottom waters
27
Spring overturn
mixing process that occurs in spring in stratified lakes whereby oxygen-rich top waters mix with nutrient-rich bottom waters
28
Phytoplankton
photosynthesizing algae that become noticeable when a green scum or red tide appears on the water
29
Zooplankton
tiny animals that feed on the phytoplankton
30
Estuary
partially enclosed body of water where fresh water and sea water meet and mix as a river enters the ocean
31
Intertidal zone
lies between the high and low tide marks
32
Coral reefs
areas of biological abundance found in shallow, warm, tropical waters
33
Pelagic zones
most of the ocean's volume lies within this area
34
Hydrothermal vents
seawater percolates through cracks and is heated to 350 degrees Celsius
35
Biomagnification
pollutants becoming concentrated as they move up the food web
36
Upwelling
cold offshore winds cause cold nutrient-rich waters to rise and take te place of warm nutrient-poor waters
37
El Niño-Southern Oscillation (ENSO)
When the Humboldt Current is not as cool as usual, upwelling does not occur, stagnation results, the fisheries decline, and climate patterns change globally