ECOLOGY2 - BIOMES

8/12/2019 ECOLOGY2 - BIOMES

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ECOLOGY

By:

MARIA KRISIA

FAE DELOSREYES DE ASIS,

BSN-RN


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BIOMES

also known as LIFE ZONES

-composed of many ecosystems

smaller communities of plants and

animals and their habitats withinspecial regions

-are sometimes named by the

climax vegetation (stable plant

communities) of the region


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BIOMES

The ecosystems of a particularbiome tend to have plants with

similar growth forms and animals

with similar feeding habits

- The characteristics of biomes

are a direct result of

temperature and rainfall

patterns. These patterns result

from the features of the Earth

(mountains, valleys, etc.)


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BIOMES

2 physical factors:

a. Amounts of heat from the sun

that reach the different parts

of the Earth and seasonalvariations of heat

b. Global atmospheric circulation

and the resulting patterns of

oceanic circulation


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THE SUN AND ITS EFFECT

ON CLIMATEbecause the Earth is a SPHERE,

some parts receive more energy

from the sun than others.

-Therefore, the greater the

LATITUDE or distance from the

equator, the colder the climate

-Seasons occur because the earth

is tilted on its axis


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THE SUN AND ITS EFFECT

ON CLIMATE


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ATMOSPHERE AND ITS

EFFECT ON CLIMATE

the climate of a region is

determined primarily by its

latitude and wind patterns

-These factors interacting with

earth features result in

particular rainfall patterns

-Temperature, rainfall, and

altitude result in the vegetative

growth of a specific area


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LIFE ON LAND: biomes of

the world

A. TROPICAL RAIN FORESTS

B. SAVANNAS

C. DESERTS

D. TEMPERATE GRASSLANDS

E. TEMPERATE DECIDUOUS FORESTS

F. TAIGA

G. TUNDRA

- Arranged by their distance from

the equator


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TROPICAL RAIN FORESTS

- is the most complex biome in

the world

- found at low elevations in the

tropics at the equator where

it is warm and wet- characterized by a dense tree

canopytree top branches and

leaves that overlap with each

other- The thick canopy allows little

sunlight to penetrate, so rain

forest soils are nutrient-poor


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SAVANNAS

-Found near the equator inareas with less annual

rainfall

- This climate supports

grasslands with scatteredshrubs and trees

- It also supports herds of

grazing herbivores such as

zebra, buffalo, etc. which are

eaten by carnivores


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DESERTS

- Biomes that have 10 inches or

less of precipitation annually

- Vegetation is

characteristically sparse- Because of a lack of moisture

in the soil and low humidity

in the atmosphere, most of the

sunlight penetrates to theground


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DESERTS

-Daytime temperatures can reach55C (131F) in the shade.

At night the desert floor

radiates heat back to the

atmosphere, and the

temperature can drop to near

freezing

-

Plants are those with tissuesadapted to store water, such

as cacti


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DESERTS

-Daytime temperatures can reach55C (131F) in the shade.

At night the desert floor

radiates heat back to the

atmosphere, and thetemperature can drop to near

freezing

- Plants are those with tissues

adapted to store water, such

as cacti


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DESERTS

-Animals have also adaptedthemselves to cope with

limited water, by limiting

activity, living in deep

burrows and emerging only atnight, or storing water in

tissues (camels)


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TEMPERATE GRASSLANDS

-Also known as prairies,steppes, pusztas, veld, or

pampa

- All grasslands have 10-30

inches of rainfall annually(less than savannas and more

than deserts)

- Characterized by large

quantities of perennial

grasses since rainfall is

insufficient to supports

forests or shrublands


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TEMPERATE GRASSLANDS

-Often populated by burrowingrodents (prairie dogs), and

grazing herbivores

- Highly productive when

converted to agriculture


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TAIGA

- Characterized by long, cold

winters with little

precipitation; most of the

precipitation falls in the

summers- Because of the latitude where

taiga occurs, the days are

short in winter and long in

the summer- Light, warmth, and rainfall of

the summer allows plants to

grow rapidly


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TUNDRA

- Encircles the top of the

world, covering 1/5 of the

earths land surface

- Dominated by scattered patches

of grasses, sedges, and

lichens with some small trees

- Very low annual precipitation

(desert-like levels) which are

unavailable to plants becauseit freezes for most of the

year


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TUNDRA

- In brief summers, some of the

ice melts and forms puddles in

the ground

- Many animal species nest in

the tundra in the summer and

return to warmer climates for

the winter


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ECOLOGY2 - BIOMES

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