Environmental Studies
Slides Week 1
INTRODUCTION
Dr. Janelle Burke and Prof. Kari Fulton served as lecturers for Week 1, focusing on Environmental Studies & Justice. This introductory lecture laid the groundwork for understanding the complex interrelationships between human societies and the natural world, emphasizing the importance of a just and equitable approach to environmental issues.
ENVIRONMENTAL STUDIES
Definition
Environmental Studies is an interdisciplinary field that integrates various domains to understand the environment. This broad integration is essential because environmental challenges rarely fit into a single academic discipline; they often require diverse perspectives. Key domains include:
Environmental Sciences: Focuses on natural processes and human impacts.
Social Sciences and Humanities: Explores human behavior, societal structures, cultural values, and ethical considerations in relation to the environment.
Includes Economics, Political Science, Sociology, Ethics, and Law.
Also encompasses Literature, Poetry, Architecture, and Fashion, highlighting cultural perceptions and expressions about the environment.
Earth Sciences: Covers geological processes, atmospheric dynamics, and oceanic systems.
Chemistry: Analyzes chemical compositions, reactions, and pollutants in environmental systems.
Atmospheric Sciences: Studies weather, climate, and atmospheric phenomena.
Toxicology: Investigates the effects of toxic substances on living organisms and ecosystems.
Biology: Examines living organisms, their functions, and interactions.
Ecology: Studies the relationships between living organisms and their environment.
Source for Definitions
The primary reference text for definitions in this course is Friedland & Relyea, 2016, specifically "Essentials of Environmental Science," 2nd edition, published by W.H Freeman, New York.
ENVIRONMENT
Overview
The environment is broadly defined as the totality of all conditions surrounding us that collectively influence life. This encompasses not only the physical and biological world but also the social, cultural, and economic factors that shape human experience and ecological systems.
Components of the Environment
Natural Environment (Ecosystem)
The natural environment, or ecosystem, comprises both biotic (living) and abiotic (non-living) components. Biotic components include all living organisms that interact dynamically within their ecosystems:
Fish: Aquatic vertebrate animals critical to marine and freshwater food webs.
Animals: Diverse multicellular organisms, including mammals, birds, reptiles, and amphibians.
Humans: A species with unique capacity for environmental alteration and management.
Plants: Photosynthetic organisms forming the base of most terrestrial and aquatic food webs.
Fungus: Decomposers vital for nutrient cycling.
Bacteria: Microscopic single-celled organisms, including beneficial and pathogenic varieties.
Pathogens/Microbes: Disease-causing agents and other microscopic life forms.
Insects: Arthropods playing roles in pollination, pest control, and decomposition.
Biotic Factors: Non-living elements like soil, water, and air that are influenced by living organisms and are crucial for supporting life.
Abiotic (Non-living) Components
Key abiotic factors influencing the environment are physical and chemical conditions that dictate which life forms can survive and thrive in a particular habitat, influencing ecological processes and resource availability:
Dissolved Oxygen: Essential for aquatic life; levels indicate water quality.
Water Salinity Levels: Affects osmoregulation for aquatic organisms; crucial for estuarine and marine ecosystems.
Temperature: Influences metabolic rates, distribution of species, and chemical reaction rates.
Solid Waste Pollution: Physical debris impacting landscapes, water bodies, and wildlife.
pH Levels (Water and Soil): Measures acidity/alkalinity, critical for nutrient availability and organism survival.
Soil Composition: Determines nutrient retention, water infiltration, and suitability for plant growth.
Sunlight Exposure/Solar Radiation: Primary energy source for ecosystems, driving photosynthesis and influencing climate.
Erosion/Wind Patterns: Shapes landforms, disperses seeds and pollutants, and affects soil fertility.
Built Environment/Community
Our built environment and community encompass a wide array of elements, each with environmental significance, reflecting human interactions with and modifications of natural systems:
Recreational Areas: Spaces for leisure, vital for human well-being and fostering connection to nature.
Cultural Importance of Natural Areas: Ecosystems supporting local economies, traditional practices, and heritage.
Economic Importance of Natural Areas: Natural sites providing resources or attracting tourism.
Gathering Places (e.g., Corner Stores, Town Centers): Crucial for community cohesion and hubs for local activities.
Tourist Locations: Sites drawing visitors, with potential environmental impacts and economic benefits.
Sources for Subsistence (e.g., Grocery Stores, Farmers Markets, Community Gardens): Relate to food security and the resilience of local food systems.
Natural Resources (e.g., Rangeland, Oil): Involve considerations of sustainable management and the impacts of extraction.
Pollution Frequency (Trash/Pollution): Directly affects human health and ecosystem quality.
Access to Clean Water and Fresh Food: Fundamental human rights and critical aspects of environmental justice.
Green Spaces: Parks, urban forests, contributing to air quality, mental health, and urban ecology.
Stormwater/Sewage Outflow: Impacts water quality and urban infrastructure resilience.
Percentage of Permeable Surface: Influences groundwater recharge, runoff, and the urban heat island effect.
Security and Personal Safety: Can affect how individuals engage with their environment and access resources.
Noise Pollution: Documented health impacts on humans and can disturb wildlife.
Local Policies (e.g., Racist Policy): Historically shaped environmental inequities, leading to disproportionate impacts on marginalized communities.
Proximity to Industrial Sites: Often linked to point source pollution and increased health risks for adjacent populations.
Types of Pollution/Toxins (Water, Air, Solid Waste): Requires specific mitigation strategies due to their diverse impacts.
Accessibility to Transportation: Influences carbon footprints and urban planning strategies.
Accessibility for People with Disabilities: Emphasizes inclusive urban design and fair access to natural spaces.
Biodiversity (Using iNaturalist): Crucial for ecosystem health, stability, and the provision of ecosystem services, often assessed through citizen science platforms.
Other Components of the Environment
Further discussion and brainstorming are encouraged within the course to identify additional components that contribute to our understanding of the environment and its complex interactions, inviting diverse perspectives and insights.
THINKING LIKE AN ENVIRONMENTAL SCIENTIST
To think like an environmental scientist, one must cultivate a specific set of skills and approaches for rigorous inquiry and problem-solving in environmental contexts. Key aspects include:
Research Skills: Learning to conduct personal investigations to gather and synthesize information effectively.
Data Gathering: Collecting data from credible and verifiable sources to ensure factual accuracy.
Methodical Approach: Adopting an objective viewpoint, setting aside personal biases, to interpret data impartially.
Critical Thinking: Emphasizing rigorous analysis of information, identifying assumptions, and evaluating evidence to form well-reasoned conclusions.
Environmental Indicators: Utilizing metrics that reflect the health of a given environment, providing measurable insights into ecological health and human impact.
SCIENTIFIC METHOD
The scientific method involves a structured approach essential for empirical research, guiding inquiry from initial observation to published findings to ensure reliability and reproducibility. The steps are:
Observe and Question: Identify a phenomenon or problem in the natural world and formulate initial inquiries or questions about it.
Form Testable Hypothesis: Develop an educated guess or a falsifiable prediction that proposes a possible explanation for the observed phenomenon.
Collect Data: Systematically gather relevant data through experimentation, field observations, surveys, or other empirical methods, ensuring careful control of variables.
Interpret Results: Analyze the collected data using statistical and analytical tools to draw conclusions that either support or refute the initial hypothesis.
Publish Findings: Share research methodology, results, and conclusions through peer-reviewed journals, conferences, or reports, contributing to the broader scientific knowledge base and facilitating further investigation.
ENVIRONMENTAL INDICATORS
Key environmental indicators are measurable parameters used to monitor the state and health of ecosystems, track human impacts, and assess progress towards sustainability goals. These include:
Biodiversity: The variety of life within an ecosystem; high levels indicate a healthy and resilient ecosystem, while its loss signals environmental degradation and reduced capacity for ecosystem services.
Food Production: Monitoring global food production is crucial for understanding human carrying capacity, food security, and vulnerability to crises, especially as climate change impacts agricultural yields and distribution.
Average Global Temperature and Levels: These are direct and critical measures of global climate change; rising temperatures and increasing atmospheric carbon dioxide concentrations are primary drivers of global warming and associated environmental shifts.
Human Population Size and Growth: The scale and growth rate of the human population directly influence resource consumption, waste generation, and the overall environmental footprint, placing pressure on natural systems and requiring sustainable management strategies.
Resource Depletion: Tracking the depletion of essential resources like freshwater, minerals, and fossil fuels highlights unsustainable consumption patterns, potential future scarcities, and emphasizes the urgent need for renewable alternatives and efficient resource use.
DATA INTERPRETATION
In data interpretation, understanding key terminology is vital for ensuring the reliability of scientific data and the validity of conclusions. Accurate and precise measurements minimize uncertainty, leading to more trustworthy findings and informed decision-making in environmental management:
Accuracy: How close a measured value is to the actual or true value, indicating the correctness of a measurement.
Precision: How close repeated measurements are to one another, reflecting the reproducibility or consistency of the measurements.
Uncertainty: An estimate of how much a measured or calculated value might differ from its true value, acknowledging inherent limitations and potential errors in measurement processes.
CLIMATE DATA
Climate data often illustrates average temperature changes, typically represented with respect to a specific baseline period, such as 1980-1999, to clearly show variations and trends over the years. These long-term datasets are essential for identifying patterns in global warming, modeling future climate scenarios, and understanding the magnitude of human-induced changes to the Earth's climate system.
SUSTAINABILITY
Sustainability encompasses interconnected concepts that guide human activities towards long-term ecological balance and societal well-being. These concepts are foundational to addressing current environmental and social challenges:
Sustainable Development: Development that effectively balances present human well-being with economic advancement, without compromising the ability of future generations to meet their own needs. It emphasizes meeting current needs without depleting resources or degrading the environment for the future.
Living Sustainably: Acting in ways that ensure crucial activities for human society—such as access to clean water, food, and energy—can continue indefinitely through responsible resource management and minimal environmental impact, integrating principles of conservation and efficiency into daily life.
Stakeholders in Sustainable Development: A diverse group whose participation and cooperation are essential for achieving sustainability due to their varied roles and impacts. These include:
Individuals: Through daily choices concerning consumption, waste, and community involvement.
Corporations: Through ethical business practices, sustainable supply chains, and environmental responsibility.
Non-profit Organizations: Through advocacy, conservation efforts, community education, and policy development.
Policymakers: Through developing and implementing regulations, legislation, and international agreements.
Local and Federal Governments: Through planning, resource allocation, infrastructure development, and ensuring environmental justice.
SUSTAINABLE DEVELOPMENT GOALS (SDGs)
List of Goals
The Sustainable Development Goals (SDGs) comprise 17 interconnected objectives, adopted by the United Nations in 2015 as a universal call to action to end poverty, protect the planet, and ensure that all people enjoy peace and prosperity by 2030. These goals address global challenges including poverty, inequality, climate change, environmental degradation, peace, and justice:
No Poverty: End poverty in all its forms everywhere.
Zero Hunger: End hunger, achieve food security and improved nutrition, and promote sustainable agriculture.
Good Health and Well-being: Ensure healthy lives and promote well-being for all at all ages.
Quality Education: Ensure inclusive and equitable quality education and promote lifelong learning opportunities for all.
Gender Equality: Achieve gender equality and empower all women and girls.
Clean Water and Sanitation: Ensure availability and sustainable management of water and sanitation for all.
Affordable and Clean Energy: Ensure access to affordable, reliable, sustainable, and modern energy for all.
Decent Work and Economic Growth: Promote sustained, inclusive, and sustainable economic growth, full and productive employment, and decent work for all.
Industry, Innovation, and Infrastructure: Build resilient infrastructure, promote inclusive and sustainable industrialization, and foster innovation.
Reduced Inequalities: Reduce inequality within and among countries.
Sustainable Cities and Communities: Make cities and human settlements inclusive, safe, resilient, and sustainable.
Responsible Consumption and Production: Ensure sustainable consumption and production patterns.
Climate Action: Take urgent action to combat climate change and its impacts.
Life Below Water: Conserve and sustainably use the oceans, seas, and marine resources for sustainable development.
Life on Land: Protect, restore, and promote sustainable use of terrestrial ecosystems, sustainably manage forests, combat desertification, and halt and reverse land degradation and halt biodiversity loss.
Peace, Justice, and Strong Institutions: Promote peaceful and inclusive societies for sustainable development, provide access to justice for all, and build effective, accountable, and inclusive institutions at all levels.
Partnerships for the Goals: Strengthen the means of implementation and revitalize the global partnership for sustainable development.
GREEN JOBS
Green jobs represent a crucial sector for transitioning to a sustainable economy, yet face challenges in achieving equitable representation:
Definition and Context: Green jobs are roles directly aligned with environmental protection and sustainable development, particularly those within renewable energy sectors, conservation, resource efficiency, and eco-friendly manufacturing.
Issue of Diversity: A significant issue in this area, as highlighted by Green 2.0 reports (details at https://www.diversegreen.org/the-challenge/), is the persistent lack of diversity in leadership within environmental organizations. This lack of diversity is critical as it can lead to a narrow range of perspectives, potentially overlooking equitable solutions and hindering the effectiveness of environmental initiatives, particularly in addressing issues that disproportionately affect marginalized communities.
CLIMATE CHANGE ESSAYS
A core principle that underpins much of environmental science, particularly in the context of climate change discussions, is the recognition that humans invariably alter the environment through their activities, technologies, and sheer numbers. The fundamental challenge lies not in avoiding alteration entirely, but in determining our deliberate and responsible approach to this alteration, requiring careful consideration of long-term consequences, ethical implications, and the adoption of informed, sustainable strategies to mitigate negative environmental changes.