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ENVI SCI FINALS > FRESHWATER BIOMES > Flashcards

FRESHWATER BIOMES Flashcards

1
Q

-Are large communities of plants and animals centered on waters with less than 1% salt concentration.

A

Freshwater Biomes

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2
Q
  • they are all freshwater biomes, which differ in depth, water movement, and other abiotic factors.
A

Lakes, ponds, rivers, streams, and wetlands

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3
Q
  • are probably the most important of all the biomes. Their medium, water, is a major natural resource.
A

Aquatic biomes

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4
Q

is the basis of life, it supports life, and countless species live in it for all or part of their lives.

A

Water

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5
Q

supply us with our drinking water and water for crop irrigation.

A

Freshwater biomes

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6
Q

are small bodies of water surrounded by land,

A

ponds

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7
Q

are large bodies of freshwater surrounded by land.

A

lakes

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8
Q

form when water begins to fill in a depression in the ground.

A

Ponds

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9
Q
  • are formed due to the action of glaciers and ice sheets.
A

Lakes

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10
Q
  • shallow
  • sunlight reaches bottom
  • temperature uniform
A

Pond

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11
Q
  • deep
  • sunlight does not reach bottom
  • temperature not uniform
A

Lakes

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12
Q

Classification of lakes

A

Oligotrophic
Mesotrophic
Eutrophic
Eutrophication

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13
Q
  • is an unwanted explosion of living aquatic-based organisms in lakes and estuaries that results in oxygen depletion that can destroy an aquatic ecosystem. It has been regarded as the most important environmental problem caused by phosphorus losses.
A

Eutrophication

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14
Q

-Harmful algal blooms, dead zones, and fish kills are the results of a process called —which begins with the increased load of nutrients to estuaries and coastal waters.

A

eutrophication

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15
Q
  • (of a lake or other body of water) rich in nutrients and so supporting a dense plant population, the decomposition of which kills animal life by depriving it of oxygen.

-

A

Eutrophic Lakes

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16
Q

(of a body of water) : characterized by the state resulting from eutrophication

A

Eutrophic Lakes

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17
Q

characterized by an abundant accumulation of nutrients that support a dense growth of algae and other organisms, the decay of which depletes the shallow waters of oxygen in summer.

A

Eutrophic Lakes

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18
Q
  • Moderate nutrients added to the water
  • Moderate water temperature
  • Moderate level of bioderversity
  • Medium algae/ plant
  • Midrange levels of dissolved oxygen
  • Increased productivity: High sediment accumulation and decaying matter
A

Mesotrophic Lakes

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19
Q
  • middle or mid
A

Meso

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20
Q
  • Lakes with a less nutrient content and clean water
  • Low concentration of nitrogen and phosphorus.
  • The biological oxygen demand is low.
  • High penetration of sunlight
  • Waters often very clear
  • Cold and more dissolved oxygen, color less
A

Oligotrophic Lake

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21
Q

Part of the lake

A

Littoral Zone
Limnetic Zone
Profundal Zone
Benthic Zone.

22
Q
  • Shallow-water zone Light reaches the bottom Stimulates the growth of rooted plants the area near the shore at the top of the lake that receives sunlight.
A

The Littoral Zone/ The Nearshore

23
Q
  • is the sunlight part at the top of the lake, similar to the littoral zone.
  • Most photosynthesis occurs in this part of the lake.
A

LIMNETIC ZONE / THE OPEN WATER

24
Q
  • is the deep open water, where it is too dark for photosynthesis to occur. Its beginning is marked by the compensation level of light, the point at which respiration balances photosynthesis
A

PROFUNDAL ZONE / THE DEEP WATER

25
Q
  • the very bottom of the lake.

-Organisms here tend to tolerate cooler temperatures well. Place where decomposition takes place.

A

BENTHIC ZONE / THE LAKE FLOOR

26
Q
  • A body of water type.
  • A unique ecosystem, flooded by water.
  • Water covers the soil.
  • Standing water that nourishes underwater plants.
  • The plant species that live there are used to characterize the area.
  • Function as natural sponges that trap and slowly release surface water, rain, snowmelt, groundwater and flood waters.
A

Wetland

27
Q
  • is a natural flowing watercourse.
  • usually cold and full of oxygen and runs swiftly through a shallow riverbed.

-

A

River

28
Q
  • is a natural flow of water that follows a more temporary path that is usually not in a valley.
A

Stream

29
Q
  • Location of the original release water.
A

Source Zone

30
Q
  • types of wetland.
A

Marshes, swamps, and bogs

31
Q
  • Contact with separate phase contamination.
A

Source Zone

32
Q
  • Act as reservoirs.
A

Source Zone

33
Q
  • May be defined as several distinct zones or layers.
A

Source Zone

34
Q
  • Swiftly Flowing.
A

Source Zone

35
Q
  • Cold, clear, fast-running streams in upper watershed.
A

Source Zone

36
Q
  • Lots of dissolved oxygen.- Not productive due to lack of nutrients and phytoplankton.
A

Source Zone

37
Q
  • Populated by cold-water fish,
    such as trout.
A

Source Zone

38
Q
  • wider, lower-elevation streams;
A

Transition Zone

39
Q
  • streams join to form tributaries
A

Transition Zone

40
Q
  • water is warmer with more nutrients, supports more producers and, slightly lower dissolved oxygen.
A

Transition Zone

41
Q
  • Less clear
A

Transition Zone

42
Q
  • Channels usually wider
A

Transition Zone

43
Q
  • Current is slower
A

Transition Zone

44
Q
  • Substrate begins to accumulate silt
A

Transition Zone

45
Q
  • wider, deeper rivers
A

Floodplain Zone

46
Q
  • warmer temperature & less dissolved oxygen
A

Floodplain Zone

47
Q
  • Slow-moving algae and cyanobacteria and rooted aquatic
A

Floodplain zone

48
Q
  • carries substantially more sediment
A

Floodplain Zone

49
Q
  • contains substantially more nutrients
A

Floodplain Zone

50
Q

channels wider, wide mouth

A

Floodplain Zone

51
Q
  • substrate silty from deposition of sediment
A

Floodplain Zone

ENVI SCI FINALS (7 decks)

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