Threats to Biodiversity - Ms. Bustos€¦ · Invasive Species • Any organism that has been...
Transcript of Threats to Biodiversity - Ms. Bustos€¦ · Invasive Species • Any organism that has been...
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Threats to
Biodiversity
EQ: What events affect biodiversity?
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5 Threats of Biodiversity
(HIPPO)
1. Habitat destruction/fragmentation
2. Invasive species3. Population growth4. Pollution5. Overconsumption
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Habitat Destruction•Changing a habitat to suit human needs…for housing, farming, etc.
•This displaces animals/plants. As the human population grows, so does habitat destruction!
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Fragmentation
• Breaking up large habitats into smaller habitats.
• Creates an “edge” habitat where “inner” habitat used to be. Some plants and animals cannot adapt to these changes.
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Invasive Species• Any organism that has
been relocated somewhere other than its original habitat.
• Oftentimes, invasive species out-compete native species resulting in disruption of the ecosystem and food chain. Many native organisms are becoming endangered by this!
Zebra Mussel
Asian Beetle
Synonyms include:
Introduced species, non-native species, exotic species and alien species…
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Population growth of Humans
• Increasing population means greater demand for food, shelter, fuel and water.
• This often leads to habitat loss, pollution, resource scarcity and overconsumption (in areas with enough money)
• Humans are coming into greater (more frequent) contact with previously wild areas with high biodiversity
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Population expected to reach
8 billion by 2020
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Pollution• Pollution can alter the habitat to the point where some plants
and animals will not be able to adapt.
• Global Climate Change--many species are intolerant to changes in temperature--affects feeding relationships and breeding patterns.
• Acid rain/Air pollution-these types of issues do not respect borders. US acid rain fell in Canada destroying sugar maple forests which upset the amount/quality of maple syrup produced.
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Overconsumption
▪ Individuals consuming way more resources than needed to survive –sometimes more than is needed for a high standard of life
▪ Industrialized nations make up 25% of the world’s population, but use 75% of its resources.
▪ US makes up only 5% of world’s pop--causes 33% of world’s pollution!