Transcript speciality and biomes 1213

Specialty Niches
Invasive vs. Native Species
Indicator Species
Keystone Species
Invasive Species
Carcinus maenus, the European Green Crab, was
introduced to North America in the 1800's. This predator
now ranges from Nova Scotia to Delaware.
Purple loosestrife
& Kudzu
3 examples:
Macquarie Island / Pythons/Asian Carp
• http://www.youtube.com/watch?v=QOxoZB6
PxpU&playnext=1&list=PLB127E4EA44F5FC28
• http://www.youtube.com/watch?v=PjaM7wB
WWoc&feature=relmfu
• http://www.youtube.com/watch?v=mUssO68
D2eM (to 6:30)
Native Species
Indicator Species
Keystone Species
Foundation Species
BIOMES
Understanding
the Environment
that has selected
for adaptations…
Biomes are classified according to:
TEMPERATURE
PRECIPITATION
• Tropical
• Temperate
• Polar
• Deserts
• Grasslands
• Forests
• The angle that the sun
hits the Earth varies
• The amount of rainfall will
determine what plants can
grow & how many
• This leads to Global
Wind patterns
PRECIPITATION INFLUENCES
• Rain dictates Plants. Plants dictate Animals.
• Plants want to maximize photosynthesis
– Big leaves
• Plants want to retain water and control temp.
– Small leaves
– Waxy coating