EUNIS habitat classification 2017 > U - Inland habitats with no or little soil and mostly with sparse vegetation > U1 - Terrestrial underground caves, cave systems, passages and waterbodies

Terrestrial underground caves, cave systems, passages and waterbodies

Description (English)

Natural caves, cave systems, underground waters and subterranean interstitial spaces. Caves and their associated waters harbour varied, but paucispecific, communities of animals, fungi and algae that are restricted to them (troglobiont organisms), or are physiologically and ecologically capable of conducting their entire life cycle within them (troglophile organisms), or are dependent on them for part of the life cycle (subtroglophile organisms). Underground waters not associated with caves (stygon) and interstitial spaces harbour distinctive faunas

Source: EUNIS habitat classification

Quick facts

EUNIS habitat type	code U1
Relation to	Resolution 4 habitat type (used for designation of Emerald sites)

Legal status

Relation to other habitat types mentioned in legal instruments

Legal text	Annex	Name in legal text	Code in legal text	Habitat type relationship	More information
Convention on the conservation of European wildlife and natural habitats	Revised Annex I of Resolution 4 (1996) of the Bern Convention on endangered natural habitats types using the EUNIS habitat classification (year of revision 2010)	Terrestrial underground caves, cave systems, passages and waterbodies	H1	Same	https://wcd.coe.int/ViewDoc....ckColorLogged=FDC864 Resolution No. 4 (1996) of the Bern Convention lists endangered natural habitats requiring specific conservation measures [and the designation of Areas of Special Conservation Interest (ASCIs) forming the Emerald network]

Vegetation types

Relation to vegetation types (syntaxa)

Not available

Species mentioned in habitat description

Not available

Other classifications

Classification	Code	Habitat type name	Relationship type
EUNIS Habitat Classification 2007 (revised descriptions 2012)	H1	Terrestrial underground caves, cave systems, passages and waterbodies	same

For relation to plant communities (syntaxa), see Vegetation types

History

Classification	Code	Habitat type name	Relationship type
EUNIS Habitat Classification 200410	H1	Terrestrial underground caves, cave systems, passages and waterbodies	same
EUNIS Habitat Classification 200308	H1	Terrestrial underground caves, cave systems, passages and waterbodies	same
EUNIS Habitat Classification 200202	H1	Terrestrial underground caves, cave systems, passages and waterbodies	same
EUNIS Habitat Classification 199910	H1	Terrestrial underground caves, cave systems, passages and waterbodies	same
EUNIS Habitat Classification 199811	H1	Terrestrial underground caves, cave systems and water bodies	same
EUNIS Habitat Classification 199712	H1	Terrestrial underground caves, cave systems and water bodies	same
Palaearctic Habitat Classification 199905	65	Part of Caves	same
Palaearctic Habitat Classification 1997	65	Part of Caves	same
Palaearctic Habitat Classification 1996	65		same
Palaearctic Habitat Classification 1993	65		same
CORINE Biotopes Classification 1991	65		same
CORINE Biotopes Classification 1989	65		same

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