The Cascades Butterfly Project Tracking Butterfly Abundances & Plant Phenology to Better Understand the Influence of Climate Change on Subalpine Ecosystems
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The Cascades Butterfly Project Tracking Butterfly Abundances & Plant Phenology to Better Understand the Influence of Climate Change on Subalpine Ecosystems Regina M. Rochefort, Ph,D. Retired, North Cascades National Park Service Complex What is It ? ◼ Long-term monitoring program ◼ Document Trends in ◼ Butterfly abundance & phenology ◼ Timing of plant flowering Who? ◼ Citizen Scientists ◼ Park Biologists ◼ Student Interns E X P E R I E N C E Y O U R A M E R I C A Where? National Parks: • North Cascades • Mount Rainier National Forests: • Mount Baker- Snoqualmie • Okanogan- Wenatchee 10 Survey Routes E X P E R I E N C E Y O U R A M E R I C A Why Monitor Subalpine Species? Science-based Management to Protect Natural Ecosystems in Perpetuity for the American Public Changing Climate Adaptive Management Climate Model Projections Temperatures: 3 to 6° F warmer by the end of the 21st century Precipitation: more rain & less snow, but amounts less certain Subalpine & Alpine Ecosystems are very sensitive to these changes E X P E R I E N C E Y O U R A M E R I C A Subalpine & Alpine Ecosystems ◼ Lower snowpacks ◼ Longer & drier growing seasons What Changes Do We Expect? • Species distribution changes • Higher treelines • Changes in plant & animal phenology • Glacier loss - extent and volume E X P E R I E N C E Y O U R A M E R I C A Why did we select butterflies & plants? ◼ Sensitive to temperature & precipitation ◼ Easy to learn – citizen scientists can collect reliable data ◼ Monitored across the world ◼ Butterflies & plants depend on one another Mourning Cloak Anicia Checkerspot Western Tiger Swallowtail How Do We Survey? Two Types of Surveys • Qualitative • Inventory & Distribution • Photographs • Quantitative • Relative Abundance • 10 Survey Routes E X P E R I E N C E Y O U R A M E R I C A Qualitative Butterfly Surveys (Photos) E X P E R I E N C E Y O U R A M E R I C A Quantitative Surveys Butterflies ▪ Pollard Walk method ▪ Routes are along trails ▪ Each route is 1 kilometer Phenophase Plant Phenology ▪ Plant list for each route ▪ Phenophase ▪ Abundance ▪ Host plants ▪ Typical flowering pattern Flowering flowering fruit early mid late Overview of Survey Routes Skyline Divide, Mt Baker-Snoqualmie Maple Pass, Okanogan-Wenatchee Sauk Mtn, Mt Baker-Snoqualmie Easy Pass, North Cascades Overview of Survey Routes Cascade Pass, North Cascades Spray Park, Mount Rainier Mazama Ridge, Mount Rainier Naches Loop, Mount Rainier Overview of Survey Routes Skyscraper Mountain, Sunrise Rim, Mount Rainier Mount Rainier E X P E R I E N C E Y O U R A M E R I C A Common Blues Anna’s Blue Photo Melanie Weiss Photo Melanie Weiss Boisduval’s Blue Arctic Blue Silvery Blue Arctic Blue, dorsal Anna’s Blue, female dorsal Arctic Blue, ventral Anna’s Blue, male dorsal Photos by Melanie Weiss Greater Fritillaries Mormon Fritillary Hydaspe Fritillary Lesser Fritillaries Western Meadow Fritillary Arctic Fritillary Checkerspots Anicia/ Snowberry Edith’s Checkerspot E X P E R I E N C E Y O U R A M E R I C A Other Observed Butterflies Anise Swallowtail Painted Lady Clouded Suphur Clodius Parnassian Mountain Parnassian Mariposa Copper Purplish Copper Project Accomplishments E X P E R I E N C E Y O U R A M E R I C A Butterfly Counts 2011 2015 • 7 routes, 29 surveys • 10 routes, 100 surveys • 780 butterflies counted • 4,431 butterflies • 23 species • 30 species 2012 2016 • 8 routes, 29 surveys ▪ 10 routes, 82 surveys • 479 butterflies counted ▪ 3,573 butterflies 21 species ▪ 37 species 2013 2017 • 8 routes, 34 surveys ▪ 10 routes, 88 surveys • 1,665 butterflies ▪ 3,275 butterflies • 21 species ▪ 33 species 2014 2018 • 10 routes, 65 surveys ▪ 10 routes, 86 surveys • 2,442 butterflies ▪ 5,375 butterflies • 30 species ▪ 34 species Butterfly Trends Butterfly Trends Sauk Mountain 2013 vs 2015 ▪ 2013 ▪ W. Meadow Frit July 21 ▪ Other species Peaks July 31 – Aug 12 ▪ 2015 ▪ W. Meadow Frit June 16 ▪ Other species July 15 – July 31 Plant Flowering Patterns E X P E R I E N C E Y O U R A M E R I C A Weather Records for Sauk Mountain Growing Degree Days = measurement of heat accumulation often used to predict plant development Hegewisch, K.C. and Abatzoglou, J.T..' Climate Tracker' web tool. NW Climate Toolbox (https://climatetoolbox.org/) accessed on 2/10/19 Citizen Scientists & Interns E X P E R I E N C E Y O U R A M E R I C A Citizen Scientists & Interns • 2011 – 2018: 255 volunteers • 85% only come for one survey • Field contacts: about 1,100 per year • 22 volunteers have been with the program > 3 years E X P E R I E N C E Y O U R A M E R I C A Regina M. Rochefort [email protected] Group Email [email protected] E X P E R I E N C E Y O U R A M E R I C A E X P E R I E N C E Y O U R A M E R I C A Resources for Project Butterflies of America: http://butterfliesofamerica.com/US-Can-Cat.htm Butterfly and Moths http://www.butterfliesandmoths.org/ Washington Butterfly Association http://wabutterflyassoc.org/ Cascades Butterfly Project https://www.nps.gov/articles/cascades-butterfly-project.htm Pocket Guide to Butterflies of Washington by Caitlin C. LaBar, available at: https://northwestbutterflies.com/ Butterflies of the Pacific Northwest by Robert Michael Pyle and Caitlin C. LaBar Life Histories of Cascadia Butterflies by David G. James and David Nunnallee E X P E R I E N C E Y O U R A M E R I C A Monitoring Protocols Link to protocols at : https://www.nps.gov/articles/cascades- butterfly-project.htm E X P E R I E N C E Y O U R A M E R I C A.