Overexploitation
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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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Overexploitation
Overexploitation

Tokyo Tuna Market






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




Cars transport seeds via mud stuck to car
Cars transport seeds via mud stuck to car








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