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The effects of climate change on the grasshoppers of the

The effects of climate change on the grasshoppers of the southern Rocky Mountains of Colorado. The effects of climate change on the grasshoppers of the southern Rocky Mountains of Colorado. SETTING UP THE CONTEXT: 1. Climate change & its effects on organisms

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The effects of climate change on the grasshoppers of the

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  1. The effects of climate change on the grasshoppers of the southern Rocky Mountains of Colorado

  2. The effects of climate change on the grasshoppers of the southern Rocky Mountains of Colorado SETTING UP THE CONTEXT: 1. Climate change & its effects on organisms 2. Gordon Alexander’s 1958-1960 grasshopper survey along an elevational gradient 3. Grasshoppers and Climate Change Activity http://www.ndsu.nodak.edu/entomology/hopper/orthoptera_home.htm

  3. Climate Change Over the last century, global temperatures have increased by 0.74 + 0.18 C0 1.30 + 0.32 F0 (IPCC 2007) Deviations from 1961-1990 average

  4. Climate Change Over the last century, global temperatures have increased by 0.74 + 0.18 C0 1.30 + 0.32 F0 (IPCC 2007) Deviations from 1961-1990 average The hottest 11 years on record in order (since 1880) 2010 2005 1998 2003 2002 2009 2006 2007 2004 2001/ 2011

  5. Warming temperatures may affect organisms in a variety of ways i. Phenology (timing of annual biological events) ii. Distributions iii. LocalExtinctions

  6. Phenology: The timing of annual biological events For plants: first flush of leaves, first flowering or fruiting dates, when leaves turn in the fall For animals: breaking of hibernation or diapause, egg-laying dates, timing of migration, when different life stages are reached

  7. Warming temperatures may affect organisms in a variety of ways i. Phenology (timing of annual biological events) ii. Distributions iii. LocalExtinctions Higher elevations: median rate of 11m per decade Higher latitudes: median rate of 17 km per decade Chen et al 2011

  8. Warming temperatures may affect organisms in a variety of ways i. Phenology (timing of annual biological events) ii. Distributions iii. Local Extinctions

  9. The effects of climate change on the grasshoppers of the southern Rocky Mountains of Colorado SETTING UP THE CONTEXT: 1. Climate change & its effects on organisms 2. Gordon Alexander’s 1958-1960 grasshopper survey along an elevational gradient 3. Grasshoppers and Climate Change Activity http://www.ndsu.nodak.edu/entomology/hopper/orthoptera_home.htm

  10. 1958-1960 Gordon Alexander survey NSF supported project ($25,000) Goal: document species, distributions & phenology of local grasshoppers Don Van Horn Don Van Horn

  11. 1958-1960 - Surveyed grasshoppers at • 8 main sites (weekly basis, March-Sept) • Valmont Butte to weather station C1 • (foothills to subalpine gradient) • 1,615 m (5,300 ft) to 3,048 m (10,000 ft) Colorado D1 C1 B1 A1 BOULDER Chautauqua Mesa N W

  12. 1958-1960 Gordon Alexander Grasshopper Survey Alexander kept extensive field notes for all weekly collecting events at each site - species present - developmental stages - abundance

  13. Grasshoppers have 5 developmental stages before they become adults

  14. 4 sites adjacent to weather stations • A1- D1 Stations set up in the early 1950’s • (currently maintained by Niwot LTER) 1958-1960 Gordon Alexander survey D1 C1 B1 A1 BOULDER Chautauqua Mesa Dr. John Marr Founded INSTAAR Mnt Research station N W

  15. Gordon Alexander survey Allow us to - examine the effects of climate change on a community level - examine the effects of climate change at different sites Provides - detailed weather station data to correlate with changes in phenology Single species studies: Most species advancing Community level analyses: 25% not advancing Parmesan & Yohe 2003; Parmesan 2007

  16. The effects of climate change on the grasshoppers of the southern Rocky Mountains of Colorado SETTING UP THE CONTEXT: 1. Climate change & its effects on organisms 2. Gordon Alexander’s 1958-1960 grasshopper survey along an elevational gradient 3. Grasshoppers and Climate Change Activity http://www.ndsu.nodak.edu/entomology/hopper/orthoptera_home.htm

  17. The effects of climate change on the grasshoppers of the southern Rocky Mountains of Colorado Students will work in one of four groups -each group will be in charge of a given life zone 4. Grasshoppers and Climate Change Activity i) How has climate changed along an elevational gradient in the Rocky Mountains? ii) How have grasshopper communities responded to warming along the elevational gradient? iii) How might grasshopper phenology be affected by future estimates of climate change? http://www.ndsu.nodak.edu/entomology/hopper/orthoptera_home.htm

  18. Each group will be responsible for processing the sampling data associated each of the four sampling site (life zone)

  19. Group 1 Chautauqua Mesa - 1752m (5750ft) Plains Gerald M. Fauske

  20. Group 2 Station A1 - 2195m (7200 ft) Foothills Gerald M. Fauske

  21. Group 3 Station B1 - 2591m (8500ft) Montane Gerald M. Fauske

  22. Group 4 Station C1 - 3048m (10000 ft) Subalpine Gerald M. Fauske

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