Course Overview: Environmental Science

Introduction

This course provides a comprehensive understanding of environmental science, focusing on the parameters of environmental issues, natural resources, ecosystem services, and biodiversity. Students will learn to analyze environmental problems and explore sustainable solutions through both online lectures and in-person tutorials.

Course Structure and Administration

Class Information

• Lectures: Online via Zoom (Mondays 10:00am, Thursdays 2:00pm)

• Tutorials: In-person (M2013 Wednesdays 4:00pm, T1019 Mondays 3:00pm)

• Instructor: Nikita Frizzelle (BSc, MSc, field biologist, expertise in biodiversity, wildlife management, and plant anatomy/physiology)

Course Description

Purpose and Learning Outcomes

• Develop a foundational understanding of environmental science and its interdisciplinary nature.

• Analyze current global environmental crises and evaluate sustainable choices.

• Participate in debates and assignments to enhance critical thinking and advocacy skills.

Course Materials

Required and Recommended Resources

• Textbook (Recommended, not required): Environment by Miller, Hackett, & J. Nelson Publishing, ISBN: 978-3...

• Online Access: Reliable internet connection required for FOL and Zoom lectures.

Course Evaluation

Assessment Structure

• Assignments on topics such as sustainability, recycling, climate, energy, and resources.

• Debate participation: Students discuss and defend positions on environmental prompts.

Core Topics in Environmental Science

What is the Environment?

The environment is the sum of all living and non-living things that interact within a given area. Environmental science is an interdisciplinary field that studies these interactions and how humans impact their surroundings.

• Key Disciplines: Biology, Chemistry, Economics, Sociology, Anthropology

• Environmental Problems: Population growth, unsustainable resource use, prices not reflecting environmental costs, inadequate understanding of the environment

Earth's Resources

Natural resources are materials or substances occurring in nature that can be exploited for economic gain or human benefit. They are classified based on their availability and renewability.

• Renewable Resources: Resources that are virtually unlimited or replenished faster than they are consumed (e.g., solar energy, forest products).

• Nonrenewable Resources: Resources that exist in finite amounts or are replenished much more slowly than they are used (e.g., coal, oil).

• Sustainable Resource Use: Using resources at a rate that allows for natural replenishment and long-term availability.

Ecological Footprint and Sustainability

The ecological footprint measures the amount of land and water area required to supply the resources an individual or population consumes and to absorb the waste generated.

• Biocapacity: The capacity of an area to generate renewable resources and absorb wastes.

• Earth Overshoot Day: The date when humanity's resource consumption exceeds Earth's biocapacity for the year.

Ecosystem Services

Ecosystem services are the essential benefits that humans obtain from natural ecosystems, such as clean water, air, food, and climate regulation.

• Types of Services: Provisioning (resources), regulating (climate, disease), supporting (nutrient cycles), and cultural (recreational, spiritual).

• Natural Capital: The world's stocks of natural assets, including geology, soil, air, water, and all living things.

Economic Indicators and Environmental Value

Traditional economic indicators like GDP do not account for environmental costs. The Genuine Progress Indicator (GPI) incorporates environmental and social factors to provide a more holistic measure of progress.

• GDP Formula:

• GPI: Adds positive contributions (e.g., volunteer work, ecosystem services) and subtracts negative impacts (e.g., pollution, resource depletion).

• Types of Environmental Value: Existence, scientific, use, spiritual, option, aesthetic, cultural, educational

Biodiversity and Ecosystem Function

Definition of Biodiversity

Biodiversity refers to the variety and variability among living organisms from all sources, including terrestrial, marine, and other aquatic ecosystems, and the ecological complexes of which they are part.

• Genetic Diversity: Variation in genes among individuals of a species.

• Species Diversity: Variety of species present in an area, including the number and relative abundance of species.

• Ecological Diversity: Variety of habitats, trophic levels, and community interactions.

Importance of Biodiversity

• Supports ecosystem services and resilience.

• Provides resources for food, medicine, and industry.

• Enhances cultural, aesthetic, and educational values.

Biodiversity: Taxonomic Breakdown

Biodiversity can be analyzed by examining the distribution of species among major taxonomic groups.

Marine Ecosystems and Productivity

• Marine environments are dominated by plankton (microscopic organisms that drift in water).

• Productivity is often lower than terrestrial ecosystems but supports vast biodiversity.

• Ocean currents redistribute nutrients, supporting marine life through upwelling processes.

Human Population Growth and Biodiversity

Increasing human population places greater demands on ecosystem services and natural resources, leading to declining global biodiversity.

• Implications include reduced ecosystem resilience, loss of species, and diminished ecosystem services.

Summary Table: Categories of Biodiversity

Key Terms and Concepts

• Ecological Footprint: Measure of human demand on Earth's ecosystems.

• Biocapacity: Ability of an ecosystem to regenerate resources and absorb waste.

• Ecosystem Services: Benefits provided by ecosystems to humans.

• Biodiversity: Variety of life in all its forms and levels.

• Sustainability: Meeting present needs without compromising future generations.

Additional info: Some content and examples have been inferred and expanded for academic completeness and clarity.