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Overexploitation. Tokyo Tuna Market. Commercial exploitation. Morel Mushrooms for Sale. Coral harvested for jewelry. Rhinoceros exploitation. Rhino horn Products – Dagger market in Yemen. Rhino Horn in Traditional Medicine. Wild Blueberries. Wild Salmon.

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Presentation Transcript
overexploitation
Overexploitation

Tokyo Tuna Market

slide6

Rhino horn

Products –

Dagger market

in Yemen

consequences of overexploitation
Consequences of Overexploitation
  • Population Effects

- Reduction in population size

- Age structure

- Sex ratio

- Genetic structure

2. Ecosystem Effects

exotic species1
Exotic Species
  • Conservation biologists typically call introduced species “exotic species” - species which live outside their natural range
  • Botanists typically refer to exotic plants as alien species
  • Other terms you may see include biological invaders, introduced species, invasive species, non-indigenous species, non-native species (my preferred term)
how do exotic species get dispersed
How Do Exotic Species Get Dispersed?

1. Stowaways

2. Subsistence and Commerce

  • Recreation
  • Whimsy or aesthetics
  • Science
  • Biological Control