Watch Video * AT 720° F (400° C), and water concentrated with hydrogen sulfide - the ocean ridges are a very extreme environment, YET in the 1970’s life was first found there…. Why did scientists think that there was NO WAY life could exist on the ocean floor? What made it possible to explore these extreme areas of the world? And …. How do the organisms thrive there?

Ecology

Ecology OUR Objectives: Identify the basis of Ecology Describe the components of an ecosystem Review biotic and abiotic components Explain levels of organization Decipher niche and habitat

WHAT IS ECOLOGY? Ecology- the scientific study of interactions between organisms and their environments, focusing on energy transfer Ecology is a science of relationships What do you think about when I say ecology? Recycling? Acid rain?

WHAT DO YOU MEAN BY ENVIRONMENT? The environment is made up of two factors: Biotic factors- all living organisms inhabiting the Earth – if it IS or WAS alive. Abiotic factors- nonliving and NEVER living parts of the environment (i.e. temperature, soil, light, moisture, air currents) When I say environment you think what—weather. Well Ok but it it much more than that

Biotic VS Abiotic Video 2 Video

Biotic VS Abiotic Biotic = Living or once living components of an ecosystem Abiotic = Never living components of an ecosystem VERBAL QUIZ Interaction between biotic and abiotic 1

Levels of Organization Biosphere Biome Ecosystem Community Population Organism

BIOSPHERE BIOME ECOSYSTEM COMMUNITY POPULATION ORGANISM

The highest level of organization Biosphere – all living things and their relationship with life supporting portions of Earth composed of air, land, fresh water, and salt water. The highest level of organization Lets review. Organisms make up populations, populations make up communities, communities and abiotic factors make up ecosystems, and all of the ecosystems make up the biosphere. From one to many and each depending on the other.

BIOME – location with a specific climate (temperature and precipitation) WE LIVE IN THE TEMPERATE DECIDUOUS FOREST.

Ecosystem - populations in a community and the abiotic factors with which they interact

Community - several interacting populations that inhabit a common environment and are interdependent. Next level is a community which is several populations living together and depending on each other. What does interdependent mean? An example of a community is shown here with the bear and the salmon. They both live in a common environment and the bear needs the fish for food? How does the salmon need the bear?

POPULATION a group of organisms of one species living in the same place at the same time that interbreed Produce fertile offspring Compete with each other for resources (food, mates, shelter, etc.) The next level is a population. A population consists of a single species living together and breeding. Give me an example of a population. Ex. large mouth bass living in Lake Meade. Beetles living under the same log. Here we have salmon spwning and two bears fishing.

The lowest level of organization Organism - any unicellular or multicellular form exhibiting all of the characteristics of life, an individual. The lowest level of organization The lowest level is the individual. The organism. Here we see a salmon and a bear as examples of organisms. REMINDER: organisms die, species go extinct

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TICKET OUT THE DOOR DO Ticket OUT – turn in when completed

Name: __________QUIZ

Review

Watch Reggi and answer Q Write down when Reginold tells you about his life

Habitat vs. Niche Niche - the role a species plays in a community; its total way of life; it’s JOB as that creature. Habitat- the place in which an organism lives out its life Although several species may share a habitat they each have their own niche. A niche is a very narrow range where a species fits within a habitat.

Habitat vs. Niche A niche is determined by the tolerance limitations of an organism, or a limiting factor. Limiting factor- any biotic or abiotic factor that restricts the existence of organisms in a specific environment. Although several species may share a habitat they each have their own niche. A niche is a very narrow range where a species fits within a habitat.

Habitat vs. Niche Examples of limiting factors - Amount of water Amount of food Temperature Amount of space Availability of mates Although several species may share a habitat they each have their own niche. A niche is a very narrow range where a species fits within a habitat.

Habitat

ECOSYSTEM Ecosystem, species, biotic , population, community

Competitive Exclusion Principle A habitat can have different species but each species must have a different niche. No two species can occupy the same niche for a long period of time. What happens if they do? Watch Video 1

Review OUR Objectives: Identify the basis of Ecology Describe the components of an ecosystem Review biotic and abiotic components Explain levels of organization Decipher niche and habitat

TICKET OUT THE DOOR

REVIEW Compare and contrast biotic and abiotic. Population is …. An Organism is…. Describe how a community different from an ecosystem? Explain how a niche and habitat different?

REVIEW Biotic = living or once living, abiotic= never alive. They are both important components of healthy ecosystems. Population is a group of organisms of one species living in the same place at the same time An Organism is any unicellular or multicellular form exhibiting all of the characteristics of life, an individual. Community Multiple populations interacting in one area. Ecosystem All populations in one area interacting with each other and their non-living environment. Niche - the role a species plays in a community; its total way of life; it’s JOB as that creature. Habitat- the place in which an organism lives out its life

Homework Homework: Vocabulary on page 4 of packet, fill out definitions as you read – work in progress Q's on page 6 – due Tuesday Read and do q's on pages 9-10 – due tuesday