Natural Resources Conservation Service

Soils

United States Department of Agriculture

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Soil Biology Primer Chapters

Soil Biology Primer Photo Gallery

Soil Health

Soil Biology Primer Photo Gallery

Browse and download images used in the Soil Biology Primer. Please contact the Soil and Water Conservation Society at pubs@swcs.org for permission to use copyrighted (credited) images used throughout the Soil Biology Primer.

Photo Gallery

Click a photo below to see an enlarged version:

Title:	Soil Biology Primer cover
Caption:	Soil Biology Primer cover
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Soil organisms living within a soil aggregate

Title:	Soil organisms living within a soil aggregate
Caption:	Soil organisms living within a soil aggregate
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Title:	The Soil Food Web
Caption:	The Soil Food Web
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Title:	Soil Food Web Glossary
Caption:	Soil Food Web Glossary
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Title:	Functions of Soil Organisms
Caption:	Functions of Soil Organisms
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Title:	Immature Oribatid Mites
Caption:	Immature Oribatid Mites
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Title:	Components of Soil Organic Matter
Caption:	Components of Soil Organic Matter
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Title:	Microbial Biomass Decreases with Depth
Caption:	Microbial Biomass Decreases with Depth
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Title:	Bacteria at Root Tip
Caption:	Bacteria at Root Tip
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Title:	Seasonal Microbial Activity
Caption:	Seasonal Microbial Activity
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Biomass of Soil Organisms in Four Ecosystems

Title:	Biomass of Soil Organisms in Four Ecosystems
Caption:	Biomass of Soil Organisms in Four Ecosystems
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Title:	Typical Numbers of Soil Organisms
Caption:	Typical Numbers of Soil Organisms
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Title:	A Complex Food Web
Caption:	A Complex Food Web
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Title:	Microscopic bacteria
Caption:	Microscopic bacteria
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Title:	Bacteria Dot Fungal Hyphae
Caption:	Bacteria Dot Fungal Hyphae
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Title:	Rhizobium bacteria nodules
Caption:	Rhizobium bacteria nodules
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Title:	Actinomycetes
Caption:	Actinomycetes
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Title:	Mycorrhizal Structure and Fungal Hyphae
Caption:	Mycorrhizal Structure and Fungal Hyphae
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Title:	Fungus Decomposing Leaf Veins
Caption:	Fungus Decomposing Leaf Veins
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Title:	Ectomycorrhizae Fungi
Caption:	Ectomycorrhizae Fungi
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Title:	Vesicular-arbuscular Mycorrhizal Fungus
Caption:	Vesicular-arbuscular Mycorrhizal Fungus
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Title:	Arid Rangeland System
Caption:	Arid Rangeland System
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Title:	Basidiomycete Fungi Mushroom
Caption:	Basidiomycete Fungi Mushroom
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Mycorrhizal Fungi Link Root to Soil Particles

Title:	Mycorrhizal Fungi Link Root to Soil Particles
Caption:	Mycorrhizal Fungi Link Root to Soil Particles
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Title:	Protozoa Feed on Bacteria
Caption:	Protozoa Feed on Bacteria
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Title:	Bacteria Ingested by an Amoeba
Caption:	Bacteria Ingested by an Amoeba
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Title:	Flagellate Protozoa
Caption:	Flagellate Protozoa
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Ciliates are the largest of the protozoa and the least numerous.

Title:	Ciliates
Caption:	Ciliates
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Title:	Mineralization and Immobilization
Caption:	Mineralization and Immobilization
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Title:	Fungi-eating Protozoa
Caption:	Fungi-eating Protozoa
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Title:	Beneficial Nematodes
Caption:	Beneficial Nematodes
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Title:	Predatory Nematode
Caption:	Predatory Nematode
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Title:	Fungal-feeding Nematode
Caption:	Fungal-feeding Nematode
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Title:	Bacterial-feeding Nematode
Caption:	Bacterial-feeding Nematode
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Title:	Lesion Nematode
Caption:	Lesion Nematode
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Title:	Root-feeding Nematode
Caption:	Root-feeding Nematode
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Title:	Microscopic View of Mites
Caption:	Microscopic View of Mites
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Title:	Millipedes are Shredders
Caption:	Millipedes are Shredders
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Title:	Sowbug
Caption:	Sowbug
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Title:	Spider - Walckenaera acuminata
Caption:	Spider - Walckenaera acuminata
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Title:	Wolf-spider
Caption:	Wolf-spider
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Title:	Pseudoscorpion
Caption:	Pseudoscorpion
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Title:	Centipede
Caption:	Centipede
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Title:	Predatory Mite
Caption:	Predatory Mite
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Title:	Tiger Beetle
Caption:	Tiger Beetle
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Title:	Rugose Harvester Ants
Caption:	Rugose Harvester Ants
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Title:	Symphylan Feeds on Plant Roots
Caption:	Symphylan Feeds on Plant Roots
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Title:	Fungal-feeding Springtail
Caption:	Fungal-feeding Springtail
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Title:	Oribatid turtle-mite
Caption:	Oribatid turtle-mite
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Title:	Springtail
Caption:	Springtail
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Title:	Earthworms
Caption:	Earthworms
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Corn Leaf Pulled into Night Crawler Burrow

Title:	Corn Leaf Pulled into Night Crawler Burrow
Caption:	Corn Leaf Pulled into Night Crawler Burrow
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Title:	Earthworm Burrow with Organic Matter
Caption:	Earthworm Burrow with Organic Matter
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Title:	Vertical Earthworm Burrow
Caption:	Vertical Earthworm Burrow
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Title:	Earthworm Burrow graphic
Caption:	Earthworm Burrow graphic
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Title:	Earthworm Casts
Caption:	Earthworm Casts
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Title:	Earthworm Burrow Crusted Soil Surface
Caption:	Earthworm Burrow Crusted Soil Surface
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Title:	Earthworm Burrow Entrance
Caption:	Earthworm Burrow Entrance
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Title:	Earthworms Mating
Caption:	Earthworms Mating
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Title:	Earthworm Cocoons
Caption:	Earthworm Cocoons
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