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Ecology the study of how organisms interact
with each other and with the non-living things in their environment
Stewardship involves taking personal responsibility for the
management and care for something, ex. the environment
the environment includes all living and non-living things that exist on earth
Natural environment must be used in a sustainable way Sustainability refers to the ability of
populations of plants, animals, and other living organisms to continue to interact and reproduce indefinitely Biodiversity (the number of different types of
organisms) must be preserved
READ the article “MAMMAL EXTINCTION RISK RISES” answer the attached questions
DISCUSSION: How does human impact affect wildlife? What examples do you see in your community
or in your experience of human impact on living things?
How does this article illustrate the importance of stewardship?
A system, made up of interacting biotic and abiotic components or parts, that interact as a whole to accomplish a task
For Example a beehive is a system that depends on all
the individual bees’ interactions (worker bee builds the hive, drone bee mates with the queen, queen bee produces eggs)
Brainpop video
Components of ecosystems: Biotic factors
Organisms such as animals, plants, fungi, bacteria and algae (all require oxygen to live)
Abiotic factors Everything else on earth that doesn’t require
oxygen to liveex. Rocks, air, water
Interactions of biotic and abiotic elements help self-regulate Ecosystems have communities which
consist of different species that live and interact with an area A species is a group of similar organisms in an
ecosystem
All species have a habitat and a niche the habitat is the physical space (place)
where an organism lives, ex. forest, pond
the niche involves an organism’s typical daily life/routine ex. Grey squirrels collect nuts and other
seeds, they are hunted by foxes and owls, try to be active throughout the day, and live and nest in trees
Ecosystems can be as small as a drop of water or as large as an ocean BUT, size doesn’t matter, just
sustainability Also ecosystems can exist within other ones
and interact with each other
Biomes Are large geographical regions that
contain similar ecosystems
These biomes combine to form a biosphere A biosphere includes water, land, and
air; i.e. where life exists very thin layer around the earth
Biosphere: locations around earth (3 layers)Ecosystem: interaction of biotic and abiotic factorsCommunity: different populations living and interacting together in the same areaPopulation: individuals of the same species that live in the same areaIndividual/Species: single organism
1. What is ecology?2. Name 2 large ecosystems and 2 small ecosystems.3. Which of the following are considered to be an ecosystem? Explain your reasoning.
Backyard pond All cats in your neighbourhood Tree Schoolyard
4. Classify the following as either biotic or abiotic features: temperature, bacteria, wind, sunlight, dead leaves, mosquitoes, sand, milk, hair, ice, plastic, empty snail shell.5. “Human activities change only the biotic features of an ecosystem” Is this statement true or false? Explain why or why not.6. Would you consider a large city to be a population or a community? Explain your choice.7.What is the difference between a biotic and an abiotic component of an ecosystem?8. What are the three components that support the biosphere?9. You interact with abiotic and biotic parts of your environment every day.
a) List 5 abiotic factors in your environmentb) List 5 biotic factors in your environment