Bell Ringer (Today: Do NOT write questions)
Post on 06-Jan-2018
220 Views
Preview:
DESCRIPTION
Transcript
Bell Ringer 8.29.2011(Today: Do NOT write questions)
• 1. Do you think seeds would grow better in saltwater or freshwater?
• 2. Write a hypothesis explaining what you think.
• For example: “If I grow seeds in saltwater, then they would grow _________ than they would in freshwater.”
11
22
Bell Ringer 8.30.2011Bell Ringer 8.30.20111. How do living things in the environment
affect non living things? Give an example
2. How do the nonliving things affect the living things? Give an example
3. List three nonliving things that you use everyday.
33
Chapter 2Chapter 2
Principles of EcologyPrinciples of Ecology
44
I. EcologyI. Ecology
Ecology: study of interactions between organisms and their environments
• Ecology reveals relationships between living and non living things
55
Biotic vs. AbioticBiotic vs. Abiotic
1. Abiotic factors: nonliving parts of the environmentsexamples:
a. Airb. Waterc. Temperatured. Sunlighte. soil
66
2. Biotic Factors: living parts of the environment
Examples:a. Plantsb. Animalsc. Bacteria
77
Complete Chart in Notebook,Complete Chart in Notebook, do 15 items do 15 items
Item biotic abiotic
students
desk
bacteria
X
X
X
88
Bell Ringer 8.30.2011Bell Ringer 8.30.2011
1. Define Biotic.
2. Define Abiotic.
3. List 3 biotic and 3 abiotic factors in your environment at home.
99
III. Levels of Organization in III. Levels of Organization in EcologyEcology• From the small to the large picture1. Organisms: the individual living thing
2. Population: the number of one species in an area at the same time
1010
3. Communities: a collection of interacting populations
ex. mice, hawks, maple trees in an area together
4. Ecosystems: the interactions among the populations in a community and the community’s abiotic factors.
• Terrestrial ecosystem• Fresh water ecosystem• Salt water ecosystem
1111
Sponge 9/16/10Sponge 9/16/10
1. What is the difference between a population and a community?
2. What is the difference between a community and an ecosystem?
3. At what level of ecology would polluted water become a concern?
1212
Sponge 9/20/10Sponge 9/20/10
1. A mouse is an example of a(n) ______.a. Abiotic factor b. Biotic factor
2. Many corn plants in a corn field is an example of a(n) ________.a. population b. community c. ecosystem
3. A rock would be part of a(n) _______. a. population b. community c. ecosystem
4. A pond is an example of a _______ ecosystem.a. terrestrial b.freshwater c. Salt water
1313
IV. Organisms in EcosystemsIV. Organisms in Ecosystems1. Habitat: the place where an organism
lives out its life. “the address”– Example: field, forest, praire
2. Niche: the role & position a species has in its environment. “the job”
– Example: a job, finding food, shelter, reproducing
1414
3. environment: biotic and abiotic surroundings to which an organism must constantly adjust.
1515
Sponge 9/21/10Sponge 9/21/10
1. Define habitat.
2. Define niche.
3. Are living things always enemies? Can
they be FRIENDS??
1616
V. Living relationshipsV. Living relationships
• Some interactions are harmful to one species, yet beneficial to another
• predator-prey relationship• Lion-gazelle• Hawk-mouse
• Some species enhance their chances of survival by forming relationships with other species
1717
Kinds of SymbiosisKinds of Symbiosis
• Symbiosis: relationships that are close and permanent among organisms of different species
• A. Commensalism: one species benefits & the other species is neither harmed or benefited
– Ex. Bee and Maribou Stork
1818
b. Mutualism: both species benefit from the relationship.– Ex. Honey guide bird and badger
c. Parasitism: one organism benefits at the expense of the other. Parasites usually harm the host , not kill it.
– Ex. Cuckoo and Warbler
1919
Sponge 9/23/10Sponge 9/23/10
1. What is symbiosis
2. What are the 3 kinds of Symbiosis
3. Give an example of parasitism.
2020
VI. Nutrition and Energy flowVI. Nutrition and Energy flowSunlight is the ultimate source of energy1. Autotrophs: the producers
– Use energy stored in chemical compounds to make their own food (PLANTS)
– All organisms depend on autotrophs for energy
2. Heterotrophs: the consumers– Can’t produce their own food– Get nutrients by eating other organisms
2121
Types of heterotrophsTypes of heterotrophsa. Herbivores: primary consumer that directly
feeds on autotrophs/plants• Ex. Rabbits, deer, mice
b. Carnivores: secondary consumer feeds on other heterotrophs
• Ex. Predators like coyotes & lions
c. Omnivores: feed on both plants and animals• Ex. Bears eat fish and berries
d. Decomposers: breakdown & absorb nutrients from dead organisms
• Ex. Bacteria, Fungus, pill bugs
2222
Sponge 9/30/10Sponge 9/30/101. Define autotroph and give
an example.
2. Define heterotroph and give an example
3. The cow in the picture is what type of heterotroph?
2323
VII. Food ChainsVII. Food Chains1. Food Chains: diagram that shows how
matter & energy move through the ecosystem
Grass Rabbit Snake Hawk– Arrows show direction energy is going– Food chains always start with a plant– Usually have only 3-5 levels– Energy is lost when moving up the food
chain
2424
2. Trophic Levels: level an organism belongs to is determined by its distance from the producer
1st trophic level: Producers2nd trophic level: primary
consumers3rd trophic level: secondary
consumersHigher trophic levels: tertiary
consumers
2525
Energy transfer is limited by:– Animals at higher
levels don’t eat all available food
– Great amount of waste at every level (heat)
– Energy is expended during metabolism
26262626
27272727
2828
Sponge 10/01/10Sponge 10/01/10
1.In the food chain which organisms is the producer?
2. Which organism is the primary consumer?
3. Which organism is in the 3rd trophic level?
4. What do the arrows indicate?
2929
3. Food Webs: show all the possible feeding relationships at each trophic level in a community.
– More realistic diagram than food chain– Most heterotrophs depend on more than
one species for food or energy.
Grass
Grass Hopper
Fox Hawk
Sparrow
Frog Snake
Trophic Levels:
Tertiary Consumers
Secondary Consumers
Primary Consumers
Producers
3030
Sponge 10/7/2010Sponge 10/7/2010
1. Create a food web from the following food chains:
Plant roots rabbit foxPlant leaves rabbit snake hawkPlant leaves mouse fox
2. Why is a food web a better diagram than a food chain?
3131
Sponge 10/8/2010
1. What is NITROGEN? Is it a gas, liquid, or a solid?
2. Do you need NITROGEN? 3. Do plants need NITROGEN?
3131
3232
VIII. Cycles of NatureVIII. Cycles of Nature
• First: The Nitrogen Cycle
3232
3333
Nitrogen CycleNitrogen Cycle1. Nitrifying Bacteria: takes nitrogen out of the
atmosphere and puts it in the soil as NH32. Nitrates: created by nitrifying bacteria that
plants take in through roots3. Plants: Legumes take in nitrogen and use it
to make protein4. Animals: eat plants so nitrogen enters
protein in muscle tissue5. Waste & Dead organisms: return nitrogen
to the soil with the help of bacteria
34343434
3535
Sponge 10/15/2010Sponge 10/15/2010
1. Why is water important to our ecosystem?
2. What is precipitation?
3. What is evaporation?
3636
`̀The Water Cycle pg 53Water is recycled in 4 stages.1. Precipitation: rain, snow2. Evaporation: water molecules enter the
atmosphere.3. Condensation: water in the atmosphere
condenses on cooler surfaces than the temp. of air
4. Transpiration: water lost through leaves in plants.
3737
Sponge 10/8/2010 Sponge 10/8/2010
1. In your own words describe the following steps of the water cycle:
a. Precipitationb. Condensationc. Evaportationd. transpiration
3838
Sponge 10/11/2010Sponge 10/11/2010
1. Why is nitrogen important to our ecosystem?
2. How does bacteria play a role in the Nitrogen cycle?
3939
Sponge 10/18/2010
• 1. When you water a plant, where does the water end up?
• 2. Name all 4 stages of the water cycle.
• 3. Which stage of the water cycle makes water drops appear on a cold glass of lemonade?
3939
4040
The Carbon CycleThe Carbon Cycle pg 55 pg 55
• All living things are made of carbonCarbon is recycled in 4 steps1. Death and decay: return carbon to the soil.2. Respiration: by animals returns carbon
dioxide to the air. Ex. Exhaling3. Combustion: burning materials returns
carbon monoxide to the air4. Photosynthesis: returns carbon to living
things through plant life.
4141
Sponge 10/21/2010Sponge 10/21/2010
1. Describe how plants have an important role in the carbon cycle.
2. Describe how heterotrophs (ex. Animals) have an important role in the carbon cycle.
4242
IX. BiomesIX. Biomes
• Biome: a large group of ecosystems that share the same type of community.
• 2 Types of Biomes– Aquatic: freshwater and saltwater– Terrestrial: Tundra, Taiga, Desert,
Grasslands, Temperate Forest, Tropical Rain Forest
4343
10/8/0910/8/09
1. What is a biome?
2. What is climate?
San Luis Obispo, California
Climatogram
4545
Sponge 10/9/08Sponge 10/9/08
1. How does climate affect a Biome?
2. List three interesting facts that you learned about a biome this week?
3. What is a climatograph, and what information can scientists learn from it?
4646
Temp. Range
Precipitation Range
Location Animals Present
Plants Present
Tundra
Taiga
Desert
Grassland
Temperate Forest
Tropical Rain Forest
Oak &
Elm trees
Buffalo
Prairie dog
Epiphytes, Palms, lianas
Rattle snake
Kit fox, lizard
North & South Pole
Canada, Russia, China
4747
Sponge 10/12/09Sponge 10/12/09
1. What Biome is climatograph A from?
2. What Biome is climatograph B from?
3. What information did you use to answer #1 and #2.
A
B
4848
Sponge 10/13/08Sponge 10/13/08
1. Carbon dioxide in the atmosphere enter the biotic part of the biosphere through______.a. Combustion b. Photosynthesis
2. Omnivores, carnivores, herbivores, scavengers, & decomposers are all ___.a. Autotrophs b. Heterotrophs
3. Parasitism, commensalism, and mutualism are examples of _______.a. Ecosystems b. symbiosis
4949
4. Water is lost to atmosphere from plants and tree by the process of
a. Precipitation b. Transpiration5. _______ is an example of a freshwater
aquatic biomea. Estuary b. Lake
6. _____ contains nitrogen.a. Protein b. Carbohydrates
top related