Agriculture & Food Security Climate Change Training Module Agriculture & Food Security Climate Change Training Module Minnesota Climate and Health Program Minnesota Department of Health Environmental Impacts Analysis Unit 625 Robert Street North PO Box 64975 St. Paul, MN 55164-0975 Notice MDH developed this presentation based on scientific research published in peer-reviewed journals. References for information can be found in the relevant slides and/or at the end of the presentation. 2 Outline • • • • Food Security Observed Climate Changes Crop Production Livestock: Cattle, Dairy Animals, Swine & Poultry • Culturally Important Foods • Other Issues • Adaptation & Best Management Practices 3 Definitions • Food Security: 1. Food safety 2. Amount of food “all people at all times have both physical and economic access to access to sufficient, safe and nutritious food to maintain a healthy and active life” - World Health Organization 4 Minnesota Agriculture • Economic impact of Minnesota’s agriculture: – $75 billion per year in agricultural production and processing – Employment impact: 342,000 jobs • Nationally, Minnesota is top 10 in more than 20 agricultural products: – – – – – – – – – #1 turkey, sugar beets #2 hogs, sweet corn for processing, oats, wild rice #3 soybeans, spring wheat, green peas for processing, dry edible beans #4 corn, canola, flaxseed #5 mink pelts #6 dairy cows, red meat, hay, cheese, honey #7 milk, potatoes, sunflowers #9 cattle and calves #10 lamb • If MN agriculture was disrupted, it could have a great impact on our economy and food security for the U.S. and internationally (Source: Ye, 2013) 5 Food Security and Health • Climate change could affect – Amount of food produced – Variety and nutritional value of food – Cost of food • Minnesotans consume food from a global market; food security is impacted by climate change not just in Minnesota (Source: NCADAC, 2013) 6 Outline • • • • Food Security Observed Climate Changes Crop Production Livestock: Cattle, Dairy Animals, Swine & Poultry • Culturally Important Foods • Other Issues • Adaptation & Best Management Practices 7 Definitions Weather – conditions of the atmosphere over a short period of time Climate – conditions of the atmosphere over long periods of time (30- year standard averaging period) (Source: NASA, 2005) 8 Observed Climate Changes There have been three recent significant observed climate trends in Minnesota: The average temperature is increasing The average number of days with a high dew point may be increasing The character of precipitation is changing (Sources: Seeley, 2012; Zandlo, 2008) 9 Temperature Changes in Minnesota Minnesota Average Temperature 12 month period ending December 49 Temperature (°F) 47 45 43 41 39 37 35 Ending Year of Period Annual Average Temperature 10-Year Running Average (Sources: Western Regional Climate Center, 2011a; Seeley, 2012) 10 Temperature Changes in Minnesota Significant observations in warming pattern: Winter temperatures have been rising about twice as fast as annual average temperatures Minimum or ‘overnight low’ temperatures have been rising faster than maximum or ‘daytime high’ temperatures (Source: Zandlo, 2008) 11 Temperature Changes in Minnesota Seasonal Temperature Trends (°F per century) Based on 1895-2010 Data SPRING: + 1.6° AUTUMN: + 0.5° SUMMER: + 0.8° WINTER: + 2.2° (Source: Midwestern Regional Climate Center, 2012) 12 Dew Point Changes Dew point – a measure of water vapor in the air A high dew point makes it more difficult for sweat to evaporate off the skin, which is one of the main mechanisms the body uses to cool itself The number of days with high dew point temperatures (≥ 70°F) may be increasing in Minnesota (Sources: Horstmeyer, 2008; Seeley, 2012) 13 Number of Days Dew Point Changes (Sources: Seeley, 2012; State Climatology Office, 2012) 14 Changes in Precipitation Minnesota Total Annual Precipitation 12 month period ending in December 40 Precipitation (inches) 35 30 25 20 15 10 Ending Year of Period Total Annual Precipitation 10-year Running Average (Source: Western Regional Climate Center, 2011b) 15 Precipitation Changes in Minnesota Seasonal Precipitation Trends (inches per century) Based on 1895-2010 Data SPRING: + 0.7 in AUTUMN: + 1.2 in SUMMER: + 0.8 in WINTER: + 0.3° (Source: Midwestern Regional Climate Center, 2012) 16 Changes in Precipitation Precipitation in Minnesota is changing: More localized, heavy precipitation events Potential to cause both increased flooding and drought (Sources: Seeley, 2012; State Climatology Office, 2012c) 17 Outline • • • • Food Security Observed Climate Changes Crop Production Livestock: Cattle, Dairy Animals, Swine & Poultry • Culturally Important Foods • Other Issues • Adaptation & Best Management Practices 18 CROP PRODUCTION 19 Climate Change Impacts Changing climatic conditions will impact Minnesota crop production in four primary ways: 1. Long-term changes in average temperatures and precipitation patterns 2. Increase in pests and invasive species 3. Acute losses resulting from more frequent and intense weather extremes 4. Impacts of runoff, soil erosion and reduced infiltration from increased intensity of storm events (Source: Walthall et al, 2012) 20 Complex System Crop production relies on a balance of temperature and precipitation, soil composition, and atmospheric CO2 CO2 21 (Sources: USDA Global Change Task Force, 2010; Walthall et al, 2012) Longer Growing Season Earlier spring thaw Growing season + 2 weeks = Growing season Earlier Minnesota spring = longer growing season – Midwest growing season lengthened by almost two weeks since 1950, due in large part to earlier timing of the last spring freeze – Earlier pollination – Longer growing season may increase crop production – Species’ distributions have shifted (Sources: NCADAC, 2013; CCSP, 2008) 22 Changing Plant Hardiness Zones Climate change has not only brought Minnesota a longer growing season but also changes in the types of plants that will thrive here (Source: National Wildlife Federation, 2010) 23 Effects of Frost Days Increase number of frost-free days and reduced “winter chill hours” • Many crops require minimum number of days near freezing to keep plants dormant during winter In warmer winters crops bud or bloom earlier • Pro: Longer growing season and potentially larger harvest • Con: Increased risk of damage from late spring frost (e.g., Minnesota apples and Michigan cherries in 2012) (Sources: NCADAC, 2013; Walthall et al, 2012; California Climate and Agricultural Network, 2011) 24 Pests, Diseases and Weeds • With warmer temperatures in Minnesota, pests, diseases and weeds may: – Expand northward into climatestressed areas – Survive warming winters better – Require increased use of pesticides and herbicides (Sources: Beddow, Pardey and Seeley, 2012; Walthall et al, 2012; NCADAC, 2013) 25 Warmer Summers Warmer Minnesota summers and Higher maximum temperatures may • Increase crop yields with some warming • Decrease crop yields with too much warming (Sources: Oxfam Issue Briefing, 2012; Walthall et al, 2012; Seeley, 2008) 26 Warmer Nights & Minimum Temps Warmer Minnesota nights and higher minimum temperatures may • Stress some plants, taxing their ability to grow and resulting in lower yields • Cause some plants, such as tomatoes, to ripen faster • Disturb pollination and lower crop productivity and reduce quality (Sources: Walthall et al, 2012; Hanks, 2013; NCADAC, 2013) 27 Nutritional Value Globally, the nutritional value of some foods may change due to • Elevated atmospheric CO2 (increased carbohydrates, decreased protein & vitamins) • Changes in cultivated varieties (favor yield over nutrient content) (Sources: Davis, Epp and Riordan, 2004; Taub, Miller and Allen, 2008; NCADAC, 2013) 28 Temperature Effects on Water Demand Complex interactions of temperature and precipitation Effects of Increased Evapotranspiration in Three Scenarios Existing Amounts of Precipitation Inadequate Water Increased Precipitation Healthy Crop Growth Increased CO2 Potentially Healthy Crop Growth (Sources: Walthall et al, 2012; Reich, 2012; NCADAC, 2013) 29 Increased Temperature Increased Evapotranspiration and Crop Water Demand/Use Flood and Drought Precipitation variability can cause drought • Localized, heavy storms can result in inadequate precipitation in some regions of the state • Impacts crop yields • Prolonged droughts can increase fire danger (Sources: Seeley, 2012; CDC, U.S. EPA, NOAA and AWWA, 2010; IDWG on Climate Change, 2008) 2007 Declared Disasters: X= Drought X = Flood 30 Drought “Crop Production Down in 2012 Due to Drought, USDA Reports” (Sources: NOAA, 2012; USDA NASS, 2013) 31 Precipitation Effects: Flooding Increased precipitation in Minnesota has been driven by intensification of the heaviest rainfalls, resulting in: • Flooded fields and damaged crops • Increased runoff and reduced infiltration of water for crop use • Increased soil erosion, leading to – Soil nutrient loss – Sediment contamination of nearby water bodies (Sources: NCADAC, 2013; Walthall et al, 2012) Source: Farm Industry News May 24, 2012 32 Runoff and Erosion Runoff and erosion will be affected most by • High rainfall intensity • Soil quality • Low crop cover in spring and fall • Land use Source: MPR News photos of the week, June 15, 2012 (Photo courtesy of Pat Baskfield ) (Sources: Nearing et al, 2005, Sinha and Cherkauer, 2010) 33 Outline • • • • Food Security Observed Climate Changes Crop Production Livestock: Cattle, Dairy Animals, Swine & Poultry • Culturally Important Foods • Other Issues • Adaptation & Best Management Practices 34 LIVESTOCK: CATTLE, DAIRY ANIMALS, SWINE & POULTRY 35 Climate Change Impacts Changing climatic conditions affect animal agriculture in four primary ways: 1. Feed-grain production, availability, and price 2. Pastures and forage crop production and quality 3. Animal health, growth, and reproduction 4. Disease and pest distributions (Source: NCADAC, 2013) 36 Animal Health • Animal health is highly susceptible to temperature: – Heat stress negatively affects cattle, swine and poultry health – Warmer winters may reduce mortality but will likely be offset by greater mortality in hotter summers (Source: NCADAC, 2013) 37 Animal Growth & Reproduction • Hotter temperatures may reduce productivity of livestock and dairy animals – Animals lose appetite, gain weight slower and take longer to get to market – Production decreases, including milk from dairy cattle and eggs from poultry – Reproduction decreases resulting in smaller herds (Source: CCSP, 2008) 38 Disease and Pest Distributions • Climate change may affect – Frequency, intensity, or distribution of animal diseases and pests – Livestock’s resistance to infections and diseases (Source: Walthall, 2012) 39 Outline • • • • Food Security Observed Climate Changes Crop Production Livestock: Cattle, Dairy Animals, Swine & Poultry • Culturally Important Foods • Other Issues • Adaptation & Best Management Practices 40 CULTURALLY IMPORTANT FOODS IN MINNESOTA 41 Culturally Important Foods • Climate change will affect the availability and affordability of social and cultural foods – Mental health effects – Physical health effects • Shortages of culturally important foods for tribal community members in Minnesota – Natural wild Rice – Moose – Traditional, cold-water fish (Sources: IDWG on Climate Change, 2008; NCADAC, 2013) 42 Wild Rice • Greatest long-term threat to natural wild rice is climate change • Negative effects on wild rice: – Hot & dry conditions – Warmer winters – Warm, humid conditions – Severe weather: • 2012 Northeast flood (Sources: DNR, 2008; Myers, 2012) Map of Wild Rice Locations Source: MN DNR 43 Moose • Moose are a critical component of the cultural identity northern Minnesota, cultural food source • Decline in Minnesota moose population • Causes of mortality are likely health- and stress-related factors • Warming climate is a contributing factor in high mortality (Sources: DNR, 2011; DNR, 2013; Orrick, 2013; Source: MN DNR 44 Fish: Warmer Water • In Minnesota, climate change is warming waters • Warming waters stress native fish populations and may favor invasive species Sources: IDWG on Climate Change, 2008; Peter Jacobson, DNR Fisheries Research Supervisor CONCEPTUAL DIAGRAM OF CLIMATE WARMING EFFECTS ON MINNESOTA FISH COMMUNITIES 45 Fish: Water Quality Impacts • Climate change may lower water levels • Which affects concentration of contaminants in the water, the concentration of toxic chemicals in fish and quantity of fish Walleye, StarTribune, April 15, 2013 • Warmer waters and rainfall intensity may be contributing to an increase in mercury concentrations in fish (27) (Sources: CDC, U.S. EPA, NOAA and AWWA, 2010; Monson, 2009) 46 Outline • • • • Food Security Observed Climate Changes Crop Production Livestock: Cattle, Dairy Animals, Swine & Poultry • Culturally Important Foods • Other Issues • Adaptation & Best Management Practices 47 OTHER ISSUES 48 Food Prices • Food prices may rise if • Production declines • Prices of inputs increase (such as, petroleum-based fertilizers and pesticides) • Food insecurity increases with rising food prices (IDWG on Climate Change, 2008; NCADAC, 2013) 49 Food System Delivery Climate change impact on food system delivery: • Damage to transport and distribution infrastructure from extreme weather events • Barging/shipping: low water levels in Mississippi and Lake Superior (Source: IDWG on Climate Change, 2008) Image source: Pete Markham 50 Food Safety Impacts of climate change on food safety: • Increased need of climate control to prevent food spoilage • Increased runoff or flooding from livestock to nearby fields may cause crop contamination and damage to stored food (Sources: IDWG on Climate Change, 2008; Portier et al, 2010) 51 Outline • • • • Food Security Observed Climate Changes Crop Production Livestock: Cattle, Dairy Animals, Swine & Poultry • Culturally Important Foods • Other Issues • Adaptation & Best Management Practices 52 Best Management Practices Adapt to climate change ADAPTATION & BEST MANAGEMENT PRACTICES 53 Adaptation • Adaptation is not new to agriculture • Adaptation practices will vary by location due to climatic, soil and topographic variability • Strategies may include: – Biodiversity – Wetland restoration – Reduce soil erosion – Mitigate heat effects on livestock (Source: NCADAC, 2013) 54 Biodiversity • Biodiversity increases resilience to changing environmental conditions and stresses • Increases potential to adapt to climate change Agrobiodiversity includes: • Harvested crops, livestock breeds, fish species, and wild plants and animals • Supportive species: soil microbiota, bees, earthworms, etc. • Supportive ecosystems0 (Source: IDWG on Climate Change, 2008; FAO, 2013) 55 Wetland & Buffer Management Wetlands and buffers can help manage too much or too little precipitation Source: MDA, 2007 MN wetland restoration: • 500,000 acres of wetlands and associated upland buffers restored (as of 2007) 56 Reduce Soil Erosion • Soil and nutrient erosion rates may increase with more intense rainfall events associated with climate change • Strategies : – – – – Conservation tillage Crop residue management Source: Farmer D Blog, by Steven Bell on November 14, 2011 Perennial crops and cover crops Management of livestock grazing intensities • Strategies may also enhance water management during drought (Source: Walthall et al, 2012) 57 Mitigate Heat Effects • Hot weather increases water consumption – Cattle increase their water consumption by 20-50% when heat stressed • Alleviate heat stress in cattle, poultry and swine – Install cooling systems (evaporative cooling, air conditioning or geothermal) – Increase air movement – Provide plenty of water and shade – Manage diet for weather (type of food and time of day) (Sources: UC-Davis, UMN and WSU, 2012; UMN Extension, 2012) 58 Promote Diverse Food Supply • Diverse food supply – balance of food grown locally and regionally – Diversity of locally grown food insulates MN from climate change impacts in other states and countries – Minnesota Grown promotes local producers of specialty crops and livestock http://www3.mda.state.mn.us/mngrown/ Source: Minnesota Grown Pick of the Month newsletter, January/February 2013 59 Local Public Health Actions Spotlight on SHIP From 2009-2012 Statewide Health Improvement Program (SHIP) funds have funded local public health activities that support healthy eating and local farms. Achievements include: • Farm to School programs in 440 schools, reaching 235,00 students • 95% increase in the number of farmers markets across the state Increase food security through programs that support food education and health eating • Food education • Promote local food initiatives – Farm to School programs – Farmers’ markets • Accept SNAP* and WIC** at produce and farmers’ markets *SNAP = Supplemental Nutrition Assistance Program, formerly known as Food Stamps **WIC = Women, Infants and Children Both programs are supported by USDA 60 Local Public Health Actions Reduce potential increases in foodborne illnesses due to changes in temperature and precipitation • Educate on proper food handling (e.g., washing fruits and vegetables) • Monitor MDH website for warnings on fish consumption: http://www.health.state.mn.us/divs/eh/fish/ 61 Summary Our health depends on reliable, nutritious, adequate supply of food and the resources to procure our food Changes in climate and weather may lead to variability in agricultural production Production variability may affect food prices, food security and culturally important foods Farmers can implement adaptation strategies to minimize the impacts of climate change Local public health can increase food security through programs that support food education and encourage healthy eating 62 Acknowledgements This work was supported by cooperative agreement 5UE1EH000738 from the Centers for Disease Control and Prevention Special thanks to the following people for their contributions to the creation of this training module: Mark Abrahamson, Minnesota Department of Agriculture Minden Buswell, University of Minnesota Mary Hanks, Minnesota Department of Agriculture Kevin Hennessy, Minnesota Department of Agriculture Larry Jacobson, University of Minnesota Kathy Kromroy, Minnesota Department of Agriculture Ann Pierce, Minnesota Pollution Control Agency David Schmidt, University of Minnesota Joshua Stamper, Minnesota Department of Agriculture Curt Zimmerman, Minnesota Department of Agriculture Mark Zumwinkle, Minnesota Department of Agriculture 63 Thank You Questions? Contact the Minnesota Climate and Health Program: 651-201-4898 health.climatechange@state.mn.us http://www.health.state.mn.us/divs/climatechange/ August 26, 2013 64 References (A - De) • • • • • • • • • Baier E. 2012. Tough harvest this year for Minnesota apple growers. MPR News. September 26, 2012. Available at http://minnesota.publicradio.org/display/web/2012/09/26/business/apple-harvest Beddow J, Pardey P, Seeley M. 2012. Changing Agricultural Climate: Implications for Innovation Policies. Food Policy Research Center. University of Minnesota. Available at http://www.foodpolicy.umn.edu/policy-summaries-andanalyses/changing-agricultural-climate/index.htm California Climate and Agricultural Network. 2011. Climate Change Impacts on Agriculture. Available at http://calclimateag.org/wp-content/uploads/2011/09/Impacts-fact-sheet.pdf CCSP, 2008: The effects of climate change on agriculture, land resources, water resources, and biodiversity in the United States. 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