how will temperature changes affect animal populations?

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

Slideshow by Emmi Felker-Quinnwww.felkerquinn.com