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. Invertebrate Phylum 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
Slideshow by Emmi Felker-Quinn