world biomes - scarsdale middle school · 2014-12-10 · world biomes follow along with your...
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World Biomes
Follow along with your research packet to add/modify any of your biome data.
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http://www.cotf.edu/ete/modules/msese/earthsysflr/
Tropical Rainforest
Location: Found near equator…little variation in temperatures. No distinct seasonal changes.
Earth's most complex land biome
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Tropical Rainforest
Abiotic factors
ü high biodiversity and biomass
ü both hot and moist;
ü ideal for bacteria and other microorganisms; they quickly decompose matter on the forest floor allowing nutrients to be recycled.
ü <1 cm of topsoil
ü About 100 in/yr of rainfall
http://www.cotf.edu/ete/modules/msese/earthsysfl
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Bougainvillea
§ Sunlight is a major limiting factor
§ Plants grow in layers (canopy receives most light)
§ Shallow, wide roots since soil is so thin and poor in nutrients
§ Little sun reaches the floor
Tropical Rainforest
Plant adaptations
Bangul Bamboo
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§ Many symbiotic relationships
§ Live in different levels of canopy
Wagler’s pit viper
Silvery Gibbon
Slender Loris http://www.blueplanetbiomes.org/rnfrst_animal_page.htm
Tropical Rainforest
Animal Adaptations
Many animals are specialists and require special habitat components to survive
Camouflage is common
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Threats to the Tropical Rainforest
http://www.blueplanetbiomes.org/rnfrst_animal_page.htm
§ Humans strip the rainforests for uses including logging and cattle ranching.
§ In addition to the plants and animals that are displaced by this destruction, entire civilizations of people are also without a home.
§ You can help by promoting sustainable use of the rainforests’ products
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Temperate Deciduous Forests Location:
§ found in temperate zone
(about 480 North lat)
§ Much of the human population lives in this biome
http://www.runet.edu/~swoodwar/CLASSES/GEOG235/biomes/tbdf/tbdf.html
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§ Characterized by an abundance of deciduous (leaf bearing) trees
Characterized by 4 seasons
§ Soils: Deep soil layers, rich in nutrients
§ Precipitation: 30–100 in/yr in all forms (snow, rain, hail, fog, etc.)
Temperate Deciduous Forests Abiotic Factors
http://www.cotf.edu/ete/modules/msese/earthsysflr/taiga.html
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More diversity in the deciduous forest vs. the coniferous forest due to increased
sunlight. Trees adapt to varied climate by
becoming dormant in winter
White Birch Birchhttp://www.blueplanetbiomes.org/
deciduous_plant_page.htm
Lady Fern
Geulder Rose
Temperate Deciduous forest Plant adaptations
Deciduous forests grow in layers
More sunlight reaches the ground compared to a rainforest so you will find more ground dwelling plants.
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§ Lose Winter Coat
§ Adapt to many seasons
§ Eat from different layers of the forest
Bald Eagle
Fat Dormouse
Least Weasel
http://www.blueplanetbiomes.org/deciduous_animal_page.htm
Temperate Deciduous Forest
Animal Adaptations
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Threats to Temperate Deciduous Forests
http://www.runet.edu/~swoodwar/CLASSES/GEOG235/biomes/tbdf/tbdf.html
Many forests are cleared to provide housing for humans.
Careful use of the resource can provide a renewable system if we don’t take too much habitat away.
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Taiga (or Northern Coniferous Forest or Boreal Forest)
Location: Found only in Northern Hemisphere
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Taiga Abiotic factors
§ Winters are long and cold
§ Averages 100 in/yr precipitation—mostly snow
§ Soil poor in nutrients and very acidic
§ Growing season is very short
http://www.uwsp.edu/geo/faculty/ritter/geog101/modules/ ecosystems_biomes/biomes_northern_forest.html
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Balsam Fir
§ Coniferous (needle-bearing) trees are abundant
§ Roots long to anchor trees
§ Needles long, thin and waxy
§ Low sunlight and poor soil keeps plants from growing on forest floor
http://www.inchinapinch.com/hab_pgs/terres/coniferous/plants.htm
Fireweed
Taiga Plant adaptations
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Moose
§ Adapt for cold winters
§ Burrow, hibernate, warm coat, insulation, etc.
http://www.inchinapinch.com/hab_pgs/terres/coniferous/animals.htm Great Grey Owl
Animal Adaptations of
the Taiga
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Threats to the Taiga Mining operations can
irreparably damage this fragile ecosystem.
Pollution left behind can also put animals and plants at risk.
http://www.blueplanetbiomes.org/taiga.htm
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Grasslands http://www.blueplanetbiomes.org/grasslands.htm
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Savannas (or Tropical Grasslands)
Contain the greatest number of grazing animals on Earth.
Location: Found in the tropics…near equator
Amount of precipitation supports tall grasses but only occasional trees.
The word savanna stems from an Amerind term for plains
http://www.runet.edu/~swoodwar/CLASSES/GEOG235/biomes/savanna/savanna.html
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Whistling Thorn
Umbrella Thorn Acacia
Tropical Savanna Plant Adaptations
§ Grows in Tufts § Resistance to Drought § Many plants have thorns and
sharp leaves to protect against predation.
http://www.blueplanetbiomes.org/savanna_plant_page.htm
Kangaroos Paws
Baobab
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Adapt for short rainy season—migrate as necessary
Limited food leads to vertical feeding
Reproduce during rainy season—ensures more young survive
http://www.blueplanetbiomes.org/savanna_animal_page.htm
Zebras
Chacma Baboon
Tropical Savanna
Animal Adaptations
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Threats to the Tropical Savanna
http://www.blueplanetbiomes.org/savanna_animal_page.htm
§ Invasive species
§ Changes in fire management
§ Because of their low elevation, some savannas are threatened by minor rises in sea level associated with global climate change
Koala
Elephant
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Grassland areas known as Prairie and Steppe:
§ 50-75 cm/yr
§ Characteristic high Winds
http://www.blueplanetbiomes.org/steppe.htm
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Sod-forming grasses that won’t dry out or blow away in wind.
Fleabane http://www.blueplanetbiomes.org/prairie_plants_page.htm
Buffalo Grass
Prairie Plant Adaptations
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Many adaptations to survive extremes
Prairie dog
Bobcat
http://www.blueplanetbiomes.org/pampas_animal_page.htm
Prairie Animal Adaptations
Geoffrey’s cat
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Steppe Dry, cold, grasslands
Location: Found in Russia and the Ukraine
http://www.blueplanetbiomes.org/steppe.htm
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Steppe Abiotic Factors
www.plasmacy.de
www.wsu.edu
<50 in/year precipitation
Mountains often play a role in climate characteristics
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§ most abundant are plants called Bunch grasses, fine bladed grasses that grow in clumps to preserve water
Tumbleweed
Sweet Vernal
Plant adaptations of the Steppe
http://www.blueplanetbiomes.org/steppe_plant_page.htm
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§ Many migrate, hibernate or burrow during extremes in temp and precipitation
http://www.blueplanetbiomes.org/steppe_animal_page.htm
Adaptations of Steppe Animals Mongolian Gerbil
Saiga Antelope
Gazelle herd
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Threats to the Steppe § Overgrazing…nomadic tribes
have started to spend more time in one location,
§ Infrastructure development (roads, buildings, etc)
§ Unmanaged hunting and poaching is destroying herds of animals
Corsac fox
Lynx
Milk vetch http://www.blueplanetbiomes.org/
steppe.htm
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Chaparral Location: Primarily in
coastal areas with Mediterranean climates. About 300 N and S of the equator.
http://www.blueplanetbiomes.org/chaparral.htm
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Chaparral—Abiotic Factors § Climate: hot, dry
summers, mild, wet winters. Slight variations in seasonal temperatures…NICE!
California Chaparral
Mediterranean Chaparral
http://www.blueplanetbiomes.org/world_biomes.htm
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Chaparral—Plant Adaptations
Mostly low-lying shrubs and small trees.
Many plants have leathery leaves to resist water loss
Many plant species have oils in leaves to help them resist fire…the fire will take out “weaker” plants that don’t belong.
Blue Oak
Fairy Duster
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Chaparral—Animal Adaptations
Camouflage—to avoid predation
Many animals will change their diet as the season changes.
Puma
Aardwolf
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Threats to the Chaparral
Human development—very desirable climate for humans to live.
Grey Fox
King Protea
Wild Goat
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Desert Ecosystems
§ Location: Depending on type of desert, you will find them in various locations.
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Desert Abiotic factors
§ <10 in/yr of rain
§ Little to no topsoil due to high winds.
§ Minerals not deep in soil.
§ Too dry for decay
http://www.cotf.edu/ete/modules/msese/earthsysflr/taiga.html
While there are many types of deserts, they all share one characteristic: They are the driest places on Earth!
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Joshua Tree http://www.blueplanetbiomes.org/
desert_plant_page.htm
Desert Plant Adaptations:
§ Spines
§ Succulents
§ Thick, waxy cuticle
§ Shallow, broad roots
Barrel Cactus
§ Ocotollio
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Desert Animal Adaptations:
§ Get water from food
§ Thick outer coat
§ Burrow during day
§ Large ears
§ Smaller animals =
less surface area
http://www.blueplanetbiomes.org/desert_animal_page.htm
Javelina
Bob Cat
Armadillo Lizard
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Threats to the Desert Residential development
Off road recreational activities destroy habitat for plants and animals.
Some plants are removed by collectors, endangering the population.
Sonoran Desert
Dry Desert
http://www.blueplanetbiomes.org/world_biomes.htm
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http://www.runet.edu/~swoodwar/CLASSES/GEOG235/biomes/tundra/tundra.html
Tundra
Location: Found north of the Arctic Circle
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Tundra Abiotic Factors § <25 in/year
§ Temp rarely higher than 100C
§ Permafrost layer
§ Short growing season
http://www.cotf.edu/ete/modules/msese/earthsysflr/taiga.html
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Tundra Plant Adaptations § Growing close to the ground
§ Having shallow roots to absorb the limited water resources.
§ Trees grow less than 1 m high!
cottongrass
Reindeer lichen
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Perennials
Woody shrubs
http://www.runet.edu/~swoodwar/CLASSES/GEOG235/biomes/tundra/tundra.html
Heaths
Examples of Tundra Plants
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Many visitors, migration
Few predators
Little Competition
Small ears
Insulation, thick coat
Arctic fox snowy owl
Grizzly Bear
Tundra Animal Adaptations
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Threats to the Tundra One of the
most fragile biomes on the planet
The tundra is slow to recover from damage.
Oil drilling is proposed in Alaska and other areas!
Tufted Saxifrage Polar Bear
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…Pause…
You have completed your exploration of the land or terrestrial biomes … the
following section will review the water biomes
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Freshwater Ecosystems
× Salinity <0.5 ppt.
× Lake are the deepest of fresh water systems
× Lakes are fed by underground aquifer or stream
× Ponds are fed by rainfall and may be seasonal http://mbgnet.mobot.org/fresh/
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Ponds
× Sun can reach bottom
× Fed by rainfall
× May be seasonal
× Algae and plants throughout
Microscopic Animals and Algae
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Lakes and ponds—Abiotic Factors
Littoral zone: nutrient rich area found close to shore
Benthic zone: bottom of the lake where no sunlight can reach.
www.dnr.wi.gov
www.uwsp.edu
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× Plants are floating algae and plants along shoreline
× Animals live in or near water
Lakes and ponds: Plants and Animals Adaptations
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Threats to lakes and ponds
All water systems are being polluted and degraded by human impact www.aquaticbiomes.gov
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Marsh http://mbgnet.mobot.org/fresh/wetlands/
Uses: § Animal/plant
homes
§ Carbon “sink”
§ Water recharge areas, removing pollutants
Types: Brackish and freshwater
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Marsh—Plant adaptations
× Very shallow with land occasionally exposed
× Saturated soil
× Low oxygen in water and soil
× Emergent plants
http://www.blueplanetbiomes.org/world_biomes.htm
Heron
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Swamp/Bogs
Location: Found on flat, poorly drained land, often near streams
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Swamps/Bogs Abiotic factors Land soaked because of poor drainage Decay is slow - Soil is acidic
Swamps Large trees/shrubs Adapted to muddy soils
Bogs - sphagnum moss is dominant
http://mbgnet.mobot.org/fresh/wetlands/
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Threats to Wetlands
Previous backfilling and clearing for farmland or development has been a concern.
www.kathimitchell.com
http://www.ucmp.berkeley.edu/glossary/gloss5/biome/aquatic.html
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Rivers At headwaters,
usually cold and highly oxygenated. As it flows, it will broaden out, warm up and this completely changes the biota you’ll find!
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River: Plant and Animal Adaptations
Will vary based on where in the river they are…at the headwaters, organisms need to hang on!
www.3d-screensaver-downloads.com
www.cs.dartmouth.edu
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Threats to Rivers
Industry uses water to dispose of waste products
Runoff from homes and other places causes changes in acidity, pollution, etc.
Dams alter the flow of the water
www.nwk.usace.army.mil
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Estuaries http://mbgnet.mobot.org/salt/sandy/
× Fresh and salt water meet
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Plant and Animal Adaptations of Estuaries
Very productive biome because it receives lots of light and nutrients
Often used as nursery for young
www.lookoutnow.com & www.visualparadox.com
Manatee and goose
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Threats to Estuaries § Many ports are
found on estuaries—pollution
§ Human population
www.davenewbould.co.uk pers-erf.org
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Coral Reefs
× Close to equator
× Consistent water temperature
× Shallow water
× Low in Nutrients
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× Breeding area for many fish
http://mbgnet.mobot.org/salt/coral/
Animal adaptations of the Coral Reef
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Threats to the Coral Reefs
Temperature is important, too hot or too cold and the animals can’t live there to create limestone
Human intrusion (scuba diving) is damaging if you touch/step on the reef
Pollution is also a concern.
www.calacademy.org
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Oceans http://mbgnet.mobot.org/salt/sandy/
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Ocean Abiotic factors
Open ocean is one of the least productive areas on earth, too little sunlight to support plant growth
Covers nearly ¾ of the Earth’s surface.
http://www.worldbiomes.com/biomes_aquatic.htm
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Plants are micro and macroscopic Have floating plants (kelp shown here)
Ocean Plant adaptations
http://www.calstatela.edu/faculty/eviau/edit557/oceans/norma/onfrm.htm
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Ocean Animal Adaptations
Zooplankton—sea’s smallest herbivores
Deep ocean animals feed on detritus—floating debris in the water column.
http://www.kidzworld.com/site/p1951.htm
Hammerhead
Lion fish
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Threats to the Oceans
While the oceans are vast, they are becoming more polluted
Overfishing and some fishing methods are destroying fishing grounds. http://www.worldbiomes.com/biomes_aquatic.htm
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Polar Ecosystems Can be
considered marine ecosystems since the base of food chain is phytoplankton
www.defenders.org
www.awi-bremerhaven.de
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Arctic vs. Antarctic Arctic
Relatively shallow, lots of nutrients for large variety of animals in food web, People, seals and polar bears found here.
nmml.afsc.noaa.gov
Antarctic Penguins live here—only continent not used by humans (exc. Research)
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Threats to the Polar Ecosystems
Reserves of minerals draw humans to these fragile ecosystems.
The main threat to wildlife has been the increase in tourism—garbage left behind newt.phys.unsw.edu.a
u