EE.20 Flashcards

(38 cards)

1
Q

what are the 7 terrestrial biomes?

A
  • tropical forests
  • desert
  • Mediterranean
  • grasslands
  • temperate deciduous forests
  • boreal conifer forests
  • tundra
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2
Q

what are the 7 aquatic biomes?

A
  • rivers and streams (lotic)
  • lakes and ponds (lentic)
  • rocky and soft shores (littoral)
  • coral reefs
  • upwellings
  • continental shelf (neritic)
  • open sea (pelagic)
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3
Q

what are the key factors determining the boundaries of biomes?

A

The seasonality and penology which incudes the rainfall and temperature

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4
Q

Tropical wet forest

A
  • 10 degrees N and S equator
  • non seasonal rainfall
  • heavy rains for short periods most days
  • soils are strongly leached
  • forest floor is constantly dark
  • majority of total nutrients is made up from biomass
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5
Q

Tropical dry forest

A

wet and dry seasons
deciduous trees which lose their leaves in the dry season
fewer epiphytes than in wet forests (plant that grows harmlessly upon another plant )

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6
Q

Desert

A

20-40 degrees in both hemispheres
usually found in a continental interior or coastal rain shadow
rainfall is low and unpredictable
there is extremely high evaporative stress:xerophylly

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7
Q

what type of plants and animals do you find in deserts?

A

shrubs, succulents, drought resistant grasses, colourful annuals appear post rain falls, from long persistant seed banks
rodents are a keystone species

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8
Q

Mediterranean

A
summers are hot and dry
winters are warm and wet
frequent fires
spectacular springtime flowers
goats
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9
Q

what is the climax community in the Mediterranean biome?

A

evergreen sclerophyllous forest

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10
Q

Grasslands

A

30-50 degrees in both hemispheres
moderate and variable rainfall, drought unlikely
fires are important in the prevention of succession to scrub woodlands
dominated by grasses

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11
Q

what is the key stone species found in grasslands?

A

Ungulates

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12
Q

Temperate deciduous forests

A

40-50 degrees in N hemisphere and 30-50 degrees in S hemisphere
often oceanic, with mild and moist climates
long frost free growing season
predictable rainfall

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13
Q

what type of flora do you find during spring time in temperate deciduous forests?

A

ephemerals, such as bluebells, as the forest floor is light from winter to early spring

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14
Q

Boreal forest:Taiga

A

found in high latitides 60-70 degrees in N hemisphere
rainfall is high relative to evapotranspiration
soils are often sandy, with a high moisture capacity
long snowy winters

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15
Q

what type of flora do you find in the Taiga forest?

A

Taiga is an evergreen conifer forest, which is typically dominated by spruuce

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16
Q

Tundra

A

short and frost free growing season
covered in snow for over 9 months
summer temperatures are low

17
Q

what is the characteristic flora and fauna found in the Tundra biome?

A

flora - dominated by sedges, cotton grasses, mosses, lichens and dwarf shrubs
fauna- small mammals such as lemmings and snowshoe hare, which show cyclic populations

18
Q

what are the typical characteristic of tropical rain forest trees?

A

Tall and evergreen, with drip-tip leaves, they often will have large and animal dispersed fruits
there are also many epiphytes such as orchids and bromeliads

19
Q

what type of flora do you find in tropical rain forests?

A

fruit feeding birds and bats
monkeys
exceptional biodiversity of insects, such as butterflies and moths

20
Q

where can you find spectacular densities of ungulates like wildebeest and zebra?

21
Q

where do you often find grazing and fire tolerant plants?

22
Q

which biome contains succulent plants

A

Desert - cacti in the new world, and euphorbias in the old world

23
Q

what are the typical animals found in deserts?

A

most animals are nocturnal (due to high heat in the day), and they often have extreme physiologies such as camels.
rodents and ants are often keystone species

24
Q

where can you find rich colorful spring flowers, such as orchids?

A

Mediterranean

25
what are the typical flora you would find in the Mediterranean?
``` schlerophyllous trees (leathery leaved evergreens) and shrubs Mediterranean plants are often spiny ```
26
name one of the worlds most diverse biomes
S.African fynbos
27
where can you find bison?
grasslands
28
fossorial animals and prairie dogs are found in which biome?
grasslands
29
which flora dominates grasslands
tussock grasses or clonal turf forming grasses
30
oaks, maple and beech dominate this biome
temperate deciduous forest
31
where can you find large forest ungulate such as deer?
temperate deciduous forest
32
what types of trees do you often find in temperate deciduous forests
mast fruiting trees to satiate seed feeding animals and allow regeneration
33
what is the dominant plant found in in the taiga biome?
low diversity evergreen spruce
34
where can you find large migratory ungulates such as caribou and bers as the top carnivore?
Taiga
35
the keystone species of this biome are hare and lynx
taiga
36
which biome contains vast numbers of breeding geese and waders?
Tundra
37
which biome has the lowest vascular plant diversity?
Tundra
38
summaries the interactions which determine the biome type
the length of the growing season (frost free days, avg temp, daylength) the amount and predictability of the rainfall, the type of soil and the disturbance regimes, such as fire/goats, all interact together to determine the type of biome