Food Production and Environment

Introduction to Environmental Systems

  • Course: ESYS 10

  • Lecture 14 Date: February 6, 2025

  • Topic: Food Production & the Environment

Primary Literature Assignment

  • Papers available in Canvas under “Primary Literature Assignment”.

    • Paper 1: Thiamethoxam and Honey Bees (Tosi et al., 2017)

      • Studies the impact of a common neonicotinoid pesticide on honey bee flight.

    • Paper 2: Carbon Loss from Peatlands (Bowen et al., 2024)

      • Investigates how aquatic processing enhances carbon loss from drained and burned peatlands.

    • Paper 3: DDT Footprint in Fisheries (McGill et al., 2024)

      • Examines the ecological controls on bioaccumulation in fish due to ocean disposal of DDT.

    • Paper 4: Hypoxia in Coral Reefs (Pezner et al., 2023)

      • Analyses increasing hypoxia due to ocean warming and includes honors received by the author.

    • Paper 5: Agricultural Climate Risk (Burney et al., 2024)

      • Discusses modeling approaches for agricultural climate risks and the author's qualifications.

  • Voting on paper selections in sections on February 10.

  • Quiz on selected paper in sections on February 24, covering:

    • Major questions addressed

    • Overview of paper sections (Introduction, Methods, Results, Discussion)

    • Detailed summaries of content in each section

    • Explanation of figures

    • Major conclusions

    • Identification of experimental flaws or challenges.

Updated Schedule for Quarter

  • Week 5:

    • Feb 3: Topic 12 (Continued)

    • Feb 5: Midterm Exam

    • Feb 7: Topic 14 (Food Production & the Environment - Chapter 10)

  • Week 6:

    • Feb 10: Guest lecture by Dr. Amy Lerner on sustainable food systems

    • Feb 12: Topic 16 (Water Resources & Water Pollution - Chapter 11)

  • Week 7:

    • Feb 17: No Class

    • Feb 19: Topic 18 (Continued)

    • Feb 21: Guest lecture by Dr. Jen Burney on food and water sustainability

  • Week 8:

    • Feb 24: Guest lecture by Amanda Loeper; Primary Literature Assignment due

    • Feb 26: Topic 21 (Energy Resources - Chapter 13)

  • Following Weeks: Covering additional topics leading to the final exam on March 19.

Food Security and Poverty

  • Food Security: Defined by:

    • Availability (supply)

    • Accessibility (ability to grow or buy food)

    • Utilization (nutrient uptake)

    • Stability (consistent access over time)

  • Poverty: Main cause of food insecurity

    • Food Insecurity: Chronic hunger and poor nutrition affecting health.

    • Food Insufficiency: Measure of food availability.

  • Future Projections: Need to feed 9.7 billion people by 2050, particularly challenging for less-developed countries.

  • Consequences of Food Insufficiency:

    • Chronic undernutrition (basic energy needs not met)

    • Chronic malnutrition (lack of proteins and key nutrients).

Food Production Methods

  • Agricultural Practices:

    • Combination of high-input industrialized and lower-input traditional methods.

    • Key production systems include:

      1. Croplands (rice, wheat, corn)

      2. Rangelands and pastures (meat products)

      3. Fisheries and aquaculture (fish and shellfish)

  • Technological Advances:

    • Irrigation, synthetic fertilizers, and pesticides have increased yields.

    • Green Revolution: Introduced monocultures and high-yield breeding.

Conventional vs. Organic Agriculture

  • Conventional Agriculture: Vulnerable to diseases and pests, relies on synthetic chemicals.

  • Organic Agriculture: Focuses on natural farming methods and biodiversity.

    • USDA organic labeling specifics outlined;

      • 100% Organic requires strict certification.

Gene Revolution in Agriculture

  • Crossbreeding & Genetic Engineering:

    • Traditional crossbreeding is time-consuming; genetic engineering offers speed and cost benefits.

    • Concerns regarding health effects and ecological implications of GMOs (Genetically Modified Organisms).

Environmental Impacts of Food Production

  • Industrialized Food Production: Carries significant environmental costs such as:

    • Soil erosion

    • Loss of biodiversity

    • Climate change

    • Water pollution

  • Soil Erosion Effects:

    • Pollutes waterways and alters the carbon cycle.

    • Reduces soil fertility and pollutes water resources.

Challenges from Agriculture Practices

  • Desertification: Threatens food security by decreasing soil productivity.

  • Irrigation Issues: Can lead to salinization and waterlogging.

  • Pesticide Use: Balancing pest control with environmental impact is critical.

  • Regulation: Importance of legislative acts like FIFRA and the Food Quality Protection Act focusing on pesticide management.

Conclusions from Lecture 14

  • Around 768 million people face health problems due to inadequate nutrition.

  • Industrialized agriculture has greater environmental impacts than any other human activities.

  • Transitioning to more sustainable practices could alleviate harmful effects of current food production systems.