Environmental Biology Course

Lesson 1 • Biotic Interactions Overview

Surveys predation, competition, mutualism, and parasitism as drivers of community structure. Establishes interaction types referenced in later ecosystem chapters.

Lesson 2 • Defining Environmental Biology

Introduces the scope, history, and interdisciplinary nature of environmental biology. Connects the field to ecology, conservation, and applied environmental science.

Lesson 3 • Levels of Biological Organization

Examines hierarchy from molecules to the biosphere and how each level interacts. Provides the structural vocabulary used throughout the course.

Lesson 4 • Abiotic Factors and Their Roles

Covers physical and chemical environmental variables that shape life. Students learn to identify limiting factors controlling species distribution.

Lesson 1 • Decomposition and Nutrient Cycling

Details microbial decomposition and its role in releasing nutrients for reuse. Links decomposition rates to temperature, moisture, and organic matter quality.

Lesson 2 • Energy Transfer Efficiency

Applies the ten-percent rule and ecological efficiency concepts to real ecosystems. Students calculate biomass pyramids and identify energy loss pathways.

Lesson 3 • Trophic Levels and Food Webs

Maps energy transfer from producers through consumers to decomposers. Introduces food web complexity and its implications for ecosystem stability.

Lesson 4 • Ecosystem Productivity and Stability

Evaluates how biodiversity and redundancy buffer ecosystems against disturbance. Connects productivity metrics to ecosystem services discussed in later chapters.

Lesson 1 • The Nitrogen Cycle

Covers fixation, nitrification, denitrification, and assimilation by organisms. Explains how agricultural inputs alter nitrogen availability and cause eutrophication.

Lesson 2 • Human Disruption of Biogeochemical Cycles

Synthesizes how land use, industry, and agriculture alter multiple cycles simultaneously. Prepares students to evaluate mitigation strategies in applied chapters.

Lesson 3 • The Carbon Cycle

Tracks carbon flux among atmosphere, oceans, soils, and organisms. Establishes the baseline for understanding climate change in later chapters.

Lesson 4 • The Phosphorus Cycle

Describes phosphorus weathering, uptake, and sediment burial without an atmospheric phase. Highlights phosphorus as a key limiting nutrient in aquatic systems.

Lesson 1 • Population Growth Models

Contrasts exponential and logistic growth and identifies conditions favoring each. Students apply carrying capacity concepts to real species data.

Lesson 2 • Life History Strategies

Analyzes trade-offs between reproduction, survival, and growth across species. Connects life history traits to population resilience and extinction risk.

Lesson 3 • Metapopulations and Spatial Dynamics

Introduces patch occupancy, extinction-colonization balance, and landscape connectivity. Provides the spatial framework needed for conservation planning in later chapters.

Lesson 4 • Population Attributes and Measurement

Defines density, dispersion, age structure, and sex ratio as population descriptors. Introduces field methods for estimating population size accurately.

Lesson 1 • Ecological Succession

Traces primary and secondary succession from pioneer species to climax communities. Explains facilitation, tolerance, and inhibition as succession mechanisms.

Lesson 2 • Biodiversity Patterns and Drivers

Explains latitudinal gradients, productivity hypotheses, and evolutionary history as biodiversity drivers. Prepares students to assess threats to global biodiversity.

Lesson 3 • Community Structure and Composition

Defines species richness, evenness, and dominance as measures of community structure. Introduces indices used to compare communities across sites.

Lesson 4 • Island Biogeography and Species-Area Relationships

Uses island biogeography theory to predict species richness from area and isolation. Applies the theory to habitat fragments and reserve design.

Lesson 1 • Fate and Transport of Pollutants

Traces pollutant movement through air, water, and soil via physical and chemical processes. Introduces partitioning coefficients and degradation half-lives.

Lesson 2 • Bioaccumulation and Biomagnification

Explains how lipophilic contaminants concentrate in tissues and amplify up food chains. Uses case studies to quantify biomagnification factors.

Lesson 3 • Ecotoxicology Principles

Applies dose-response relationships, LC50, and NOEC to assess pollutant effects on organisms. Connects individual toxicity to population-level consequences.

Lesson 4 • Pollutant Classification and Sources

Categorizes pollutants by origin, persistence, and medium of concern. Distinguishes point and nonpoint sources relevant to regulatory monitoring.

Lesson 1 • Extreme Events and Ecosystem Disturbance

Links increased frequency of droughts, floods, and wildfires to climate-driven ecosystem stress. Assesses recovery capacity and threshold effects in stressed ecosystems.

Lesson 2 • Vulnerability Assessment and Adaptation

Applies sensitivity, exposure, and adaptive capacity frameworks to rank species and habitat risk. Introduces assisted migration, refugia, and restoration as adaptation tools.

Lesson 3 • Ocean Acidification and Marine Ecosystems

Traces CO2 absorption by oceans and its effect on carbonate chemistry and marine organisms. Evaluates coral bleaching and shellfish vulnerability as key case studies.

Lesson 4 • Phenological and Range Shifts

Documents how warming alters species timing and geographic distributions. Analyzes mismatches between interacting species as an ecological consequence.

Lesson 1 • Restoration Ecology Principles

Defines restoration goals, reference ecosystems, and success metrics for degraded habitats. Covers active and passive restoration techniques across ecosystem types.

Lesson 2 • Ecosystem Services Valuation

Categorizes provisioning, regulating, cultural, and supporting services and their economic valuation. Connects service valuation to policy incentives for conservation.

Lesson 3 • Threats to Biodiversity

Ranks habitat loss, invasive species, overexploitation, pollution, and climate change as extinction drivers. Quantifies current extinction rates relative to background rates.

Lesson 4 • Integrated Conservation Planning

Synthesizes spatial prioritization, stakeholder engagement, and adaptive management into cohesive plans. Students produce a conservation plan applying all course concepts.