The Monarch Larva Monitoring Project: a University/Citizen Research Initiative.
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The Monarch Larva Monitoring Project: a University/Citizen Research Initiative
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Transcript of The Monarch Larva Monitoring Project: a University/Citizen Research Initiative.
- Slide 1
- The Monarch Larva Monitoring Project: a University/Citizen Research Initiative
- Slide 2
- Slide 3
- Outline Protocol and Initial Findings Extensions Outcomes
- Slide 4
- MLMP Protocol Volunteer and Choose a Site Gardens, parks, roadsides, prairies (need milkweed) Site Description Location, size, type Milkweed species and density Weekly Monitoring (2-3 hours) Estimate monarch densities Quantify milkweed quality Estimate parasitism rates Track weather conditions
- Slide 5
- MLMP Volunteers Range in age from 20-85 (77% monitor with children) Variety of occupations (from teacher to aircraft inspector) More than half participate for > 1 year
- Slide 6
- MLMP Training www.mlmp.org
- Slide 7
- Slide 8
- Past and Current Monitoring Locations as of Summer 2002
- Slide 9
- Weekly Monitoring Densities 1999 data from Cindy Petersen and students, Chanhassen, MN
- Slide 10
- Temporal Patterns Egg and L5 Densities in Upper Midwestern Sites, 1999
- Slide 11
- Egg densities in the Upper Midwest
- Slide 12
- Spatial Patterns
- Slide 13
- Spatial and Temporal Patterns: Monarchs in Southern US 2000 data from Kathy Phelps, Harrisburg, IL
- Slide 14
- Population Dynamics Total # of 5ths Total # eggs approximate measure of survival from egg to 5 th instar =
- Slide 15
- Upper Midwest Survival 2799 179 1223 10951 2423 1997* 2799 (# of eggs in blue) 3015 5539 10988 1223 180
- Slide 16
- Photo by Anurag Agrawal
- Slide 17
- Tachinid Fly Parasitism
- Slide 18
- MN and WI Survival
- Slide 19
- Data Quality Issues Incomplete/unusable data Too few plants No plant numbers Inaccurate data No eggs, lots of larvae Too many eggs Over-representation of late-instar larvae Training, reviewing hard copies of data, and recognition of normal patterns help to address these issues
- Slide 20
- MLMP Extensions
- Slide 21
- Risk Assessment: Bt Corn and Monarchs Losey et al. 1999 Consuming Bt corn pollen can kill monarch larvae Milkweed is a common agricultural weed
- Slide 22
- Relative Usage of Habitats: MN/WI Anthesis: 7/19 - 8/7
- Slide 23
- Corn field in Rosemount, MN Overlap of pollen anthesis and monarch larvae
- Slide 24
- Round-up Ready TM Crops
- Slide 25
- Documenting Impacts of Environmental Perturbations January 2002 Mexico Storm
- Slide 26
- Research Questions Sources of mortality: temporal/spatial variation Tachinid flies: effects of habitat type, presence of other hosts, location and season Host plant choice Changing landscape and ag practices Multi-trophic level interactions
- Slide 27
- MLMP Outcomes
- Slide 28
- Key Motivators My work may help promote monarch conservation My work is leading to increased understanding of monarch biology I am involved in real scientific research
- Slide 29
- Potential Obstacles ~20% of volunteers feel that Monitoring takes too much time Finding a site to monitor is difficult Filling out the forms takes too much time
- Slide 30
- Scientific Outcomes Much can be learned from basic distribution and abundance data In addition, data can provide direction for experimental and theoretical research inform public policy and conservation efforts