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Soil Science Fundamentals Study Guide

This guide provides a comprehensive overview of fungal ecology and soil dynamics. It covers the historical evolution of biological classification systems, including the Linnaean system, the Five Kingdom system, and molecular phylogeny. Key distinctions between fungi, plants, and animals are explained, focusing on nutritional strategies and cellular composition (chitin and ergosterol). The guide delves into the microbial landscape of soil, discussing its composition, methods for measuring diversi

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Fungal Ecology, Classification, and Herbarium Techniques

Mycology and Soil Fungal Ecology

An overview of fungal classification, soil microbial diversity, ecosystem functions, and methods for quantifying fungi in the environment.

Fungal classification
Basidiomycetes
Ascomycetes
Soil microbial diversity
Ecosystem functions
Biomass recycling
Geochemical transformations
Lichens
Spore-producing structures
Phylogenetic analysis
Soil organic carbon
Mycelium
Arbuscular mycorrhizal fungi
Environmental DNA

Field Safety and Logistics

Tick Safety and Prevention

Understanding the risks of black-legged (deer) ticks, Lyme disease transmission, and how to prevent bites using clothing and repellents.

Tick Removal and Symptoms

Correct techniques for removing attached ticks and recognizing early symptoms of Lyme disease like rashes and flu-like illness.

Participation and Clickers

How to use the iClicker app for bonus participation marks in class.

Fungal Biology and Classification

Morphological Identification Features

Detailed examination of cap shapes, gill attachments (decurrent, notched, etc.), stem textures, and developmental remnants.

Mycological identification
Cap shape
Pileus
Free gills
Stem (stipe)
Volva

Fungal Fruit Bodies

Identifying various morphological types such as gilled mushrooms, boletes, puffballs, stink horns, and more.

Fruiting bodies
Mushrooms
Morphology
Gilled mushrooms
Puffballs
Stinkhorns
Spore dispersal strategies

Phylum Basidiomycota

Characteristics of club fungi, including the structure and function of basidia and spore production.

Basidiomycota
Club fungi
Spore production

Phylum Ascomycota

Characteristics of sac fungi, focusing on the structure of asci and spore ejection mechanisms.

Ascomycota
Sac fungi
Spore ejection

Fungal Fruit Bodies

Identifying various morphological types such as gilled mushrooms, boletes, puffballs, stink horns, and more.

Fungal fruit bodies
Gilled mushrooms
Puffballs

Morphological Identification Features

Detailed examination of cap shapes, gill attachments (decurrent, notched, etc.), stem textures, and developmental remnants.

Stem texture
Volva
Fruiting bodies
Mycology
Identification keys

Plant Pathogens vs. Insect Damage

Distinguishing between true fungal infections (like tar spot) and insect-driven damage (like leaf galls or leaf miners).

Fungal pathogens
Insect damage
Tar spot
Leaf miners
Leaf galls
Plant pathology
Disease identification

Soil Composition and Components

Organic Matter and Humus

Understanding the role of living organisms and humus in influencing soil chemistry, pH, and nutrient availability.

Organic matter
Soil chemistry
Soil pH
Nutrient availability

Soil Solution and Atmosphere

Exploring the liquid (soil solution) and gaseous (soil atmosphere) components that facilitate nutrient and gas exchange.

Loam Soil Proportions

Soil Composition and Components

Understanding the mineral, organic (humus), liquid, and gaseous phases of soil and their influence on pH and nutrients.

Soil composition
Mineral phase
Organic phase
Liquid phase
Gaseous phase
Soil pH
Nutrient availability

Microbial Diversity and Quantification

Measuring Diversity Levels

Understanding genetic variability, species richness, relative abundance (evenness), and functional groups.

Genetic variability
Species richness
Species evenness
Functional groups
Microbial diversity

Chemical Biomass Indicators

Using chitin and ergosterol to quantify fungal presence, and understanding their limitations.

Estimating Fungal Species

Analyzing conservative vs. phylogenetic estimates of global fungal diversity and the role of cryptic species.

Herbarium Project Guidelines

Collection Techniques

Best practices for gathering specimens, including digging for the base, taking multi-angle photos, and recording environmental data.

Specimen collection
Herbarium techniques
Photography
Environmental data

Spore Prints and Identification

How to perform a spore print using specialized paper and how to use identification keys and websites like Mushroom Expert.

Spore prints
Fungal identification
Mushroom Expert

iNaturalist Documentation

Using iNaturalist to upload observations, manage geo-privacy settings, and contribute to biodiversity databases.

Preservation and Final Submission

Methods for air-drying specimens, creating plasticized specimens in the lab, and organizing the final herbarium box with QR codes.

Fungal Taxonomy and Evolution

Morphological Classification History

The history of hierarchical classification based on morphological appearance.

Morphological identification
Taxonomic history

Five Kingdom System

Five Kingdom System
Animals
Plants
Fungi
Protists

Molecular Phylogeny

Fungal vs. Plant vs. Animal

Key biological differences in nutrition, cell membranes (ergosterol), cell walls (chitin), and life cycles.

Soil Ecology and Diversity

Measuring Microbial Diversity

Concepts of species richness, species evenness, and functional groups in soil ecosystems.

Microbial diversity
Species richness
Species evenness
Functional groups
Soil ecosystems

Cultivation vs. DNA Methods

Comparing traditional agar cultivation with PCR-based DNA methods and the challenges of 'biological dark matter'.

Obligate Biotrophs and Mycorrhizae

Understanding fungi that require a host to grow, such as arbuscular mycorrhizal fungi (AMF).

Estimating Global Fungal Diversity

Analyzing different methods for estimating total fungal species, from conservative ratios to phylogenetic analysis.

Geochemical and Ecological Roles

Geochemical Transformations

How fungi change chemical properties through enzyme production, uptake, and metabolite release.

Geochemical transformations
Enzyme production
Metabolite release
Fungal activity

Nutrient Availability and Toxicity

How organic acid breakdown releases carbon and alters the availability of essential nutrients and toxic metals.

Fungal Ecosystem Functions

Nutrient Cycling and Biomass

How fungi decompose complex organic matter like wood to release nutrients back into the biosphere.

Nutrient cycling
Biomass
Decomposition
Organic matter
Wood decomposition
Biosphere

Geochemical Alteration

The role of fungal organic acids in altering soil mineral availability and particle clumping.

Geochemical alteration
Fungal organic acids
Soil minerals
Particle clumping

Weathering and Soil Formation

How lichens and other fungi break down bare rock to initiate the process of soil creation.

Fungal Biomass Indicators

Using chemical markers like chitin and ergosterol to quantify fungal presence in soil.

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