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How will temperature changes affect animal populations?

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Presentation on theme: "How will temperature changes affect animal populations?"— Presentation transcript:

1 How will temperature changes affect animal populations?

2 How do humans respond to temperature? Activity Temperature

3 The NOBLE Isopod "Armadillidium vulgare 001" by Franco Folini - San Francisco, California. Invertebrate Phylum Arthropoda Subphylum Crustacea Order Isopoda Activity Temperature

4 Schuler et al 2011 PLoS ONE

5 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).

6 Some butterflies are experiencing a reduction in range

7 Some invertebrates have evolved

8 WHAT ABOUT VERTEBRATES?

9 Ectotherm body temp and activity increase with rising environmental temperature Endotherms: mammals, birds Ectotherms: snakes, reptiles, fish

10 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.

11 Some animals will shrink

12 Sea turtle nests hatch fewer eggs at warmer temperatures

13 How does average warming affect behavior seeking favorable climate?

14 Barriers to shifting ranges

15

16 Slideshow by Emmi Felker-Quinn www.felkerquinn.com


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