Global Climate Change
• Earlier springs in
temperate zone
– Asynchrony: Species may
not respond in same way
– Ex, flycatchers migrate
Africa to Holland to nest
– Lesson??
Global Climate Change
• Earlier springs in
temperate zone
– Food lack during
hatching
Pollination
• Def’n: transfer pollen from stamen to stigma
Fertilization
• Fertilization: union
sperm with egg to
form zygote
Alabama Leather Flower
• Endangered species (Federal
list)
Fruits: one flower
can make up to 10
single-seeded
fruits
Alabama Leather Flower
• Endangered species
– 6 populations
Alabama Leather Flower
• Two main pollinator insects
– Bumblebee in early flowering years
– Solitary bee in late flowering years
Bumblebee
Solitary bee
Alabama Leather Flower
• Pollinator in early blooming year: Bumblebee
– On average: 1 visit to a flower makes 3 fruits
– Slow: visits only 1/3 as many flowers as a solitary
bee in same time
Alabama Leather Flower
• Pollinator in late blooming year: Solitary bee
– On average: 1 visit to a flower makes 3 fruits
– Fast: can pollinate 3 times as many flowers as a
bumblebee!
Alabama Leather Flower
• Question: what may happen to seed production if
early bloom years become more frequent?
• Pollination game!