Biotic and Abiotic Factors Affect Populations Habitat destruction
Biotic and Abiotic Factors Affect Populations Habitat destruction:
Resources Biotic and Abiotic Factors Affect Populations Habitat destruction:
Resources Biotic and Abiotic Factors Affect Populations Habitat destruction:
Resources Biotic Resources Abiotic Resources Biotic and Abiotic Factors Affect Populations Habitat destruction:
Other organisms Resources Biotic Resources Abiotic Resources Biotic and Abiotic Factors Affect Populations Habitat destruction:
Other organisms Resources Biotic Resources Abiotic Resources Population and Community = Biotic and Abiotic Factors Affect Populations Habitat destruction: Competition
Other organisms Resources Abiotic Resources Biotic Resources Population and Community = Biotic and Abiotic Factors Affect Populations Weather & Climate Habitat destruction: Competition
Other organisms Resources Abiotic Resources Biotic Resources Population and Community = Biotic and Abiotic Factors Affect Populations Weather & Climate Habitat destruction: Competition
Other organisms Resources Abiotic Resources Biotic Resources Population and Community = Competition Biotic and Abiotic Factors Affect Populations Weather & Climate Contamination Habitat destruction:
Other organisms Resources Abiotic Resources Biotic Resources Population and Community = Competition Biotic and Abiotic Factors Affect Populations Weather & Climate Contamination Habitat destruction: Toxins from Factories
Other organisms Resources Abiotic Resources Biotic Resources Population and Community = Competition Biotic and Abiotic Factors Affect Populations Weather & Climate Contamination Habitat destruction: Toxins from Factories Farming Chemicals and Pesticides
Other organisms Resources Abiotic Resources Biotic Resources Population and Community = Competition Biotic and Abiotic Factors Affect Populations Weather & Climate Contamination Habitat destruction: Toxins from Factories Farming Chemicals and Pesticides Runoff
Other organisms Resources Abiotic Resources Biotic Resources Population and Community = Competition Habitat Destruction Biotic and Abiotic Factors Affect Populations Weather & Climate Contamination Habitat destruction: Toxins from Factories Farming Chemicals and Pesticides Runoff
Animal Population • Chesapeake Bay Population 600 000 400 000 Caribou 200 000 20 00 0 80 • Did the populations increase, decrease, or remain constant? • What was the increase or decrease in populations? • What impact might the populations increase or decrease have on the ecosystem? • Based on the data, what do you predict will happen with the populations in the area? Why? • What will happen if the populations continues in their current trends? Steller Sea Lion 800 000 19 – Review that data and draw some conclusions: Sea Otters
Alaskan Wildlife Population 800 000 700 000 600 000 500 000 Steller Sea Lion 400 000 Caribou 300 000 Sea Otters 200 000 100 0 1980 1985 1990 1995 2000 2005 2010 http: //www. alaskasealife. org/New/research/index. php? page=ssl_decline. php
Reasons for Animal Population Increases and Declines • Increase in human population which leads to the need for more land for us to live in • Increased desire of animal skins for clothes • Hunting animals for their skins, tusks, horns, meat, etc. . . • Discarding of chemical wastes into rivers kill the marine life • Diseases • Decline in food sources • Increase in predators
Alaska Animal Populations Cause and Effect Cause(s) Effect(s) The population of the ______incr eased/decreased from ____ to ____. 1. Looking at the data and what you know about populations, communities, competition for resources, and reasons for increases and decreases in populations, what may have caused this population to decrease? 2. What may be an effect of the population decreasing?
Human Population • Chesapeake Bay Population – Review that data and draw some conclusions: • Where did the growth happen? • What was the increase in population? • What impact might the population growth make on the ecosystem? • Based on the data, what do you predict will happen with the population in the area? Why? • What will happen if the population continues to grow?
Chesapeake Cause and Effect Cause(s) Effect(s) The population of people in the Chesapeake Bay increased. 1. Looking at the data and what you know about population, communities, and competition for resources, what may have caused this population increase? 2. What may be an effect of the population increasing?
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