a the surface litter o-horizon beneath world our feet · no d u l e s n e m a t o d e s m i t e s p...

1 - 1 0 0 M i c r o m e t e r s M I C R O F A U N A A N D M I C R O O R G A N I S M S M E S O F A U N A L e s s t h a n 2 m m M A C R O F A U N A S e v e r a l c e n t i m e t e r s M E G A F A U N A R o o t n o d u l e s N e m a t o d e s M i t e s P r o t o z o a F u n g u s B a c t e r i a Surface litter O-horizon Topsoil A-horizon Subsoil C- and B-horizon Parent material bedrock Microscopic invertebrates such as collembolans, diplura, proturans, nematodes, mites and tardigrades are biological regulators of decomposition. Earthworms, termites, ants, millipedes and woodlice help with soil drainage and aeration. Toads, moles, beavers, rabbits and badgers are the principal agents of soil turnover and distribution. Bacteria, protozoans, fungi and nematodes are the smallest and most numerous organisms in the soil. They are responsible for biogeochemical processes. ©FAO, 2020 CA8251EN/1/03.20 the hidden world beneath our feet Soil biodiversity: Soil Community KEEP SOIL ALIVE PROTECT SOIL B IO DIV ER SIT Y Plants nurture a whole world of creatures in the soil, that in return feed and protect the plants. This diverse community of living organisms keeps the soil healthy and fertile. This vast world constitutes soil biodiversity and determines the main biogeochemical processes that make life possible on Earth. Thanks to the ﬁnancial support of Ministry of Finance of the Russian Federation Ministry of Economic Affairs of the Netherlands

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Page 1: A the Surface litter O-horizon beneath world our feet · no d u l e s N e m a t o d e s M i t e s P r ot z o a Fun g u s B act e r i a Surface litter O-horizon Topsoil A-horizon Subsoil

1-100 Micrometers

MIC

ROFA

UNA AND MICROORGANISMS

MESOFAUNA

Less than 2 mm

MACROFAUNA

Several centimeters

MEGAFAUNA

Root nodules

Nematode

Mites

Protozoa

Fungus

Bacteria

Surfa

ce lit

ter

O-ho

rizon

Tops

oil

A-ho

rizon

Subs

oil

C- an

d B-h

orizo

nPa

rent

mat

erial

bedr

ock

Microscopic invertebrates such as collembolans, diplura, proturans, nematodes, mites and tardigrades are biological regulators of decomposition.

Earthworms, termites, ants, millipedes and woodlice help with soil drainage and aeration.

Toads, moles, beavers, rabbits and badgers are the principal agents of soil turnover and distribution.

Bacteria, protozoans, fungi and nematodes are the smallest and most numerous organisms in the soil. They are responsible for biogeochemical processes.

©FA

O, 2

020

CA82

51EN

/1/0

3.20

the hidden world beneath our feet

Soil biodiversity: So

ilCo

unity

KEEP SOIL ALIVEPROTECT SOILBIODIVERSITY

Plants nurture a whole world of creatures in the soil, that in return feed and protect the plants. This diverse community of living organisms keeps the soil healthy and fertile. This vast world constitutes soil biodiversity and determines the main biogeochemical processes that make life possible on Earth.Thanks to the financial support of

Ministry of Finance of theRussian Federation

Ministry of Economic Affairs of theNetherlands

Marine litter

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a_To Litter Or Not To Litter

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