how will temperature changes affect animal populations?
TRANSCRIPT
How will temperature changes affect animal populations?
How do humans respond to temperature?
Activity
Temperature
The NOBLE Isopod
"Armadillidium vulgare 001" by Franco Folini - San Francisco, California.
InvertebratePhylum Arthropoda
Subphylum Crustacea Order Isopoda
Activity
Temperature
Schuler et al 2011 PLoS ONE
Are all invertebrates this tolerant of temperature change?
Snake River, Idaho
This springsnail species has an upper temperature limit of 33.2 degrees Celsius (92 degrees F).
Some butterflies are experiencing a reduction in range
Some invertebrates have evolved
WHAT ABOUT VERTEBRATES?
Ectotherm body temp and activity increase with rising environmental temperature
• Endotherms: mammals, birds
• Ectotherms: snakes, reptiles, fish
As temperatures increase, energy use increases• Salmon: 3.5°C increase in sea surface temperature will cause a 14%
reduction in average size at maturity.
Some animals will shrink
Sea turtle nests hatch fewer eggs at warmer temperatures
How does average warming affect behavior seeking favorable climate?
Barriers to shifting ranges
