Humans and Biodiversity

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Humans and Biodiversity

• Chapter 10 Sections 1 2

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The Unnecessary Species

• If you could get rid of one species what would it
  be?

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Biodiversity

• Number Variety
• Complex relationships
• Necessary to understand for our survival

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How many Species?

• ??????
• Catalogue unfinished
• Collected described

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Connections

• Interdependent
• Keystone species
• Sea Otters

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Disappearances

• Food Web unravels
• How many species can we remove before an
  ecosystem will collapse?

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Effects on Genetics

• Reduced population reduced gene pool
• More better for survival
• Genetic Disease

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Mass Extinction

• Paleozoic Era
• 540 mill. Yr ago
• 90 perish
• Plants develop prior

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• Mesozoic Era-65 mill. Yrs ago (Age of Reptiles
• 50 perish

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The Road to Extinction

• Can mass extinction happen again?

• Chapter 10 Section 2

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Indiana Bat
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Mitchell's Satyr Butterfly
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• Eastern Cougar

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Leatherback Sea Turtle
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Grey wolf
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Humpback Whale
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Eastern Prairie Fringed Orchid
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Objectives

• Compare and Contrast Endangered Species and
  Threatened Species
• Identify factors that lead to loss of
  biodiversity
• Analyze human causes of animal endangerment

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Endangered Species

• Likely to go extinct without protection

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Threatened Species

• Declining population
• Likely to become endangered if not protected

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Humans Extinction

• Destruction of habitat
• 75 of extinctions
• Intro of exotic Species
• Threatens species with no native defenses

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Northern Snakehead

• China native
• Intro to MD-now Ca, Fl, NJ, PA,NY, MA,VA, IL, NC

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Red Imported Fire Ant

• South America
• Accidentally on ship
• Painful stinging
• All SE US Quarantined

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• Pollution
• Takes years to see long term effect
• Overharvesting of Species

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Poaching
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Captive-Breeding

• Breed in captivity
• Reintroduce to habitat
• California
• Condor

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Saving Genetic Material

• Save the essence
• Germ Plasm
• Stored environmentally controlled

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Zoos Aquariums

• Houses some final members
• Preserve fraction of rare threatened species

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Protecting Ecosystems

• Protect full ecosystems
• Protect hotspots
• Promote sustainable farming

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Legal Protection
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Endangered Species Act

• US Fish Wildlife lists all Endangered and
  Threatened species
• Listed Species Cannot be caught, killed,
  uprooted, sold or traded

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• Fed. Government may not carry out projects that
  jeopardized listed species
• USFWS prepares a species recovery plan for every
  listed species

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IUCN or WCU

• Aids in protection efforts
• CITES treaty effort to stop Elephants-eventually
  ban all ivory sale

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Earth Summit

• Rio de Janeiro, Brazil
• Biodiversity Treaty To aid preservation of
  biodiversity