the study of interactions among organisms and between organisms and their environment
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ECOLOGY
What is Ecology?
The study of interactions among
organisms and between organisms
and their environment.
Foundation of Environmental ScienceEcology: the study of
how living organisms interact with each other and their nonliving environment
Ecology studies how all of these living and nonliving things interact
What is an ecosystem?
Defining an ecosystemEcosystem: all the
organisms living in an area together with their physical environment
Forest EcosystemPond EcosystemVacant Lot EcosystemDesert Ecosystem
All Ecosystems are connectedHow does your ecosystem impact the Atlantic Ocean?
Parts of an ecosystem
Parts of an ecosystem In order for an ecosystem to
survive it needs five basic components:
EnergyMineral NutrientsWaterOxygenLiving Organisms
What are some parts of this ecosystem?
If your are conducting a study of the interactions of vegetation, animals, mineral composition of the soil, and water levels in a saltmarsh. You are studying the saltmarsh ___.
ECOSYSTEM
Biotic and Abiotic FactorsBiotic: living & once living
parts of an ecosystemPlants, animals,
bacteria, dead organisms, wastes
Abiotic: nonliving parts of an ecosystem
Air, water, soil, sunlight, temperature
What are some biotic AND abiotic parts of this ecosystem?
Organizing Biotic Parts
Smallest UnitOrganism: an individual living thing like you, a tree, a fox, a rose
Species: groups of closely related organisms that can mate & produce fertile offspring like red foxes or black widow spiders, or grizzly bears
Species Species: groups of
organisms that resemble each other in appearance, behavior, chemistry and genetic makeup…able to reproduce
3.6 to 100 million species (1.4 identified)
Mostly insects/micro
Tropical forests
Known species1,412,000
Insects751,000
Plants248,400
PopulationPopulation: all the members of the same species that live in the same place at the same timeField mice living in a corn
field, grizzly bears of Yellowstone Park
Members breed with one another, rather than with other populations
CommunityCommunity: a group of various species that live in the same place and interact with each other Pond CommunityPineland Forest Community
BiosphereAll parts of the Earth where life is found
HabitatHabitat: the place
where an organism lives Organisms are
well suited for their habitat
HabitatHabitats provide an organism with resources—anything an organism needs to survive and reproduce, including food, shelter, and mates
Influenced by temperature and precipitation
Habitat
Weather – current condition of the atmosphere
Climate vs Weather
Climate – the general weather conditions prevailing in an area over a long period
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