PRINCIPLES OF ECOLOGY

ORGANISMS AND THEIR RELATIONSHIPS

OBJECTIVES

EXPLAIN THE DIFFFERENCE BETWEEN ABIOTIC FACTORS AND BIOTIC FACTORS

DESCRIBE LEVELS OF BIOLOGICAL ORGANIZATION

DIFFERENTIATE BETWEEN AN ORGANISM’S HABITAT AND NICHE

August 29, 2011 BELL RINGER

What are the steps in the Scientific Method.

August 30, 2011

Define the term organism

Define the term niche

Define the term biosphere

Milestones in Ecology

Ecology- Timeline on page 32-33- conservation of

Yellowstone to Wangari Maathai. Biosphere- Biotic Factors- Abiotic Factors- Compare and contrast abiotic and biotic

factors

LEVELS OF ORGANIZATION

Organism Population Biological community Ecosystem Biome Biosphere Refer to figure 2.6 as you read.

ECOSYSTEM INTERACTIONS

Interactions between an organism and its ecosystem.

Habitat Niche Compare and contrast a habitat and a

niche.

COMMUNITY INTERACTIONS

COMPETITION PREDATION SYMBIOTIC RELATIONSHIPS: Symbiosis Mutualism Commensalism Parasitism

Section 2.2 Flow of Energy in an Ecosystem

Autotrophs capture energy, making it available or all members of a food web.

Autotrophs Heterotrophs: herbivore, carnivore,

omnivore, detritivore.

MODELS OF ENERGY FLOW

TROPHIC LEVEL-

Food chains-producer→heterotroph→consumer

Food webs-producer→ 1st consumer →2nd consumer →3rd consumer

Ecological Pyramids

BIOMASS--

PYRAMID OF ENERGY-10% RULE

PYRAMID OF BIOMASS-

PYRAMID OF NUMBERS-

CYCLING OF MATTER

CYCLES IN THE BIOSPHERE Matter- Nutrient- Biogeochemical cycle- Explain why it is important to living

organisms the nutrients cycle.

WATER CYCLE

USE FIGURE 2.17 TO TRACE PROCESSES THAT CYCLE WATER.

Identify three processes in the water cycle.

What is a hydrologists?

THE CARBON AND OXYGEN CYCLE

How does carbon move from the abiotic to the biotic parts of the ecosystem?

THE NITROGEN CYCLE

NITROGEN FIXATION-

ELECTRICAL STORMS-

PLANTS ABSORBS FROM SOIL-

DENITRIFICATION-

THE PHOSPHOROUS CYCLE

Phosphorus essential element for the growth and development of organisms.

Two cycles-one is short term- and long term

Found in small amounts in soil May limits the growth of producers. Who are the producers.

Construct a simple food web

Food web must have at least 5 organisms listed.

Page 55-complete the document-based questions; numbers 40 and 41