how will temperature changes affect animal populations?
TRANSCRIPT
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How will temperature changes affect animal populations?
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How do humans respond to temperature?
Activity
Temperature
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The NOBLE Isopod
"Armadillidium vulgare 001" by Franco Folini - San Francisco, California.
InvertebratePhylum Arthropoda
Subphylum Crustacea Order Isopoda
Activity
Temperature
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Schuler et al 2011 PLoS ONE
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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).
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Some butterflies are experiencing a reduction in range
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Some invertebrates have evolved
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WHAT ABOUT VERTEBRATES?
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Ectotherm body temp and activity increase with rising environmental temperature
• Endotherms: mammals, birds
• Ectotherms: snakes, reptiles, fish
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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.
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Some animals will shrink
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Sea turtle nests hatch fewer eggs at warmer temperatures
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How does average warming affect behavior seeking favorable climate?
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Barriers to shifting ranges
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