According to Donita, N., Popescu, A., Pauca-Comanescu, M. (2005) The Habitats from Romania, Editura Tehnica Silvica Bucuresti in Piatra Cetii Natural reservation there are the following types of habitats:

Grasslands

1. South-Eastern Carpathian Grasslands with Asperula capitata and Sesleria rigida.

Regional endemic habitat of a high conservative value. Rare in Piatra Cetii.

Romania - R3401

Natura 2000 - 6170 Alpine and Subalpine calcareous grasslands (improper classification – should be subjected to major revision)

Palearctic 1999 – 36.43921 East Carpathian Sesleria – evergreen sedge grasslands

Eunis E4.4392 East Carpathian calciphile stepped grasslands

Emerald -

Phytotaxonomy: Asperulo capitatae – Seslerietum rigidae (Zolyomi 1939) Coldea 1997

(coded in our releves table as SR)

2. South-Eastern Carpathian Grasslands with Helictotrichon decorum

Regional endemic habitat of a high conservative value. The most widespread rocky open habitat from Piatra Cetii and Cheile Tecsestilor

Romania - R3402

Natura 2000 - 6170 Alpine and Subalpine calcareous grasslands (improper classification – should be subjected to major revision)

Palearctic 1999 – 34.3512 East Carpathian Sesleria rigida grasslamds; 34.35122 Apuseni Helictotrichon grasslands

Eunis -

Emerald –

Phytotaxonomy Helictotrichetum decori Domin 1932 (coded in our releves tables as HD)

3. Daco-Getian Grasslands with Festuca pallens and Melica ciliata

Regional endemic habitat of a high conservative value. Most of the West Balkan – Dacian calciphile saxicole species are concentrated here.

Romania – R 3403

Natura 2000 - 6190 Rupicolous Pannonic Grasslands (Stipo-Festucetalia pallentis)

Palearctic 1999 – 34.35223 Pre-Dacic Pale Fescue Grasslands

Eunis E1.1133 Melica ciliata rock debris swards.

Emerald 34.3 Dense perennial grasslands and Middle European steppes

Phytotaxonomy Seselio gracile – Festucetum pallentis Coldea 1991

(coded in our releves tables as SF)

4. South-Eastern Carpathian Grasslands with Seseleria heuffleriana and Helianthemum canum

Regional endemic habitat of a moderate conservative value due to its (local) rather restricted extension

Romania – R 3405

Natura 2000 - 6190 Rupicolous Pannonic Grasslands (Stipo-Festucetalia pallentis)

Palearctic 1999 – 34.3512 East Carpathian Sesleria rigida grasslamds

Eunis E1.2912 East Carpathian Sesleria rigida grasslands

Emerald 34.3 Dense perennial grasslands and Middle European steppes

Phytotaxonomy Helianthemo cani – Seslerietum heufflerianae (Borza 1959)

Popescu et Sanda 1992

(coded in our releves tables as SH)

5. South-Eastern Carpathians Grasslands with Agrostis tenuis and Festuca rubra

Widespread habitat with a moderate conservative value which can be high in the Central Trascau Mountains when Trollius europaeus and Narcissus stellaris or both are abundantly present (as here are most of the cases)

Romania – R3803

Natura 2000 - 6510 Lowland hay meadows (Alopecurus pratensis, Sanguisorba officinalis). Improper classification. Should be subjected to major revision.

Palearctic 1999 38.2323 Eastern Carpathian Yellow Oat Grass meadows

Eunis E1. 721 Nemoral Agrostis-Festuca grasslands

Emerald 37.2 Eutrophic humid grasslands.

Phytotaxonomy: Festuco rubrae-Agrostetum capillaris Horvat 1951

(coded in our releves tables as AFR and AF)

6. Danubian-Pontic grasslands with Poa pratensis, Festuca pratensis, Alopecurus pratensis

Widespread mesophile habitat in the whole south-eastern Europe but with a very peculiar and special composition in Piatra Cetii natural reservation where it is encountered right at the top of the stones, on the peak where totally unexpected mesohygrophile conditions were encountered. The result is a very strange combination of calciphile and mesohygrophyle species that was never seen before by us.

Romania – R 3716

Natura 2000 – 6440 Alluvial meadows of river valleys of the Cnidion dubii.

Palearctic 1999 – 37.263 Danubio-Pannonic riverine and humid meadows

Eunis E2.251 Ponto-Panonnic mesophile hay

Emerald 37.2 Eutrophic humid grasslands.

Corine –

Phytotaxonomy Poetum pratensis Ravarut, Cazac et Turenschi 1956

Calcareous rocks and screes

7. South-Eastern Carpathian communities on calcareous rocks with Asplenium trichomanes quadrivalens and Poa nemoralis

Widespread but reduced ecotone habitat placed at the limit between the forest and the open rocks or screes or on the steep shaded rocky walls or screes placed right above the beech forests.

Romania – R6209

Natura 2000 –

Palearctic 1999 – 62. Inlands cliffs and exposed rocks

Eunis - H3 Inlands cliffs and exposed rocks habitats

Emerald - 6. Inland rocks, screes and sands

Corine - 62. Inlands cliffs and exposed rocks

Phytotaxonomy Asplenio quadrivalenti-Poetum nemoralis Soo ex Gergely et al.1966

8. South-Eastern Carpathian communities from calcareous rocks fissures with Asplenium trichomanes and Asplenium ruta-muraria

Very frequent on steep calcareous slopes and boulders and also on primarily fixed screes

Natura 2000 – 8210 Calcareous rocky slopes with chasmophitic vegetation

Palearctic 1999 – 62.153 Carpathian calcareous cliff heliophile communities

Eunis – H3.2 Basic and ultrabasic inland cliffs

Emerald -6. Inlands rocks, screes and sands

Corine 62. Inland cliffs and exposed rocks

Phytotaxonomy Asplenietum trichomano-rutae murariae Kuhn 1937 Tx. 1937

Scrubs

9. Subcontinental Peri-pannonic scrub

Romania- 40AO*

Natura 2000-

Palearctic-31.8B Balcano-Hellenic decidous thickets

Eunis-F3.2431 Moesian Oriental Hornbeam thickets

Emerald-31.8B South-Eastern decidous thickets

Corine-31.8 B South-Eastern submediteranean decidous thickets

Phytotaxonomy Corno-Fraxinetum orni Pop et Hodisan 1964.

10. South-Eastern Carpathian scrubs with Spiraea ulmifolia

Regional sub-endemic habitat of a high conservative value. While it is the main kind of scrub encountered in the Apuseni Mountains on calcareous rocks with Spiraea ulmifolia as a dominant, in the particular case of Piatra Cetii massif in most cases the Black Rose Rosa spinosissima assumes the dominance while Spiraea is totally subordinated. Thing are completely reversed in the other calcareous massifs from the region.

Romania – R 3116

Natura 2000 – 40A0*. Sub-continental Peri-Pannonic scrub.

Palearctic 1999 – 31.8B 142. Carpathian Elm – Leaved Spiraea thickets.

Eunis F3.17 Corylus thickets. Improper classification.

Emerald 31.8B South-Eastern deciduous thickets.

Corine – 31.8B1 Cenntral European submediterranean deciduous thickets

Phytotaxonomy Calamagrosteto-Spireetum ulmifoliae Resemerita et Csuros 1966.

(Coded in our releves tables as SU).

11. South-Eastern Carpathian thickets with Hazel Corylus avellana and Spiraea ulmifolia

Habitat of interference (ecotone) between the beech forests and Spiraea scrub from the calcareous rocks; hard to say if they are of a natural or a human nature – probably both. Scattered Ash trees (Fraxinus excelsior) and Mountain Maples (Acer pseudoplatanus) complete the landscape without making a forestry habitat.

Romania – R3117

Natura 2000 –

Palearctic 1999 – 31.8C4 Subcontinental Hazel thickets

Eunis F3.174 Subcontinental Hazel thickets

Emerald 31.8 Western Eurasian thickets

Corine 31.8C Hazel thickets

Phytotaxonomy Spiraeo-Coryletum Ujvarosi 1944. Coded in our releves tables as CA.

Forests

12. South-Eastern Carpathian Beech Forests

Widespread and quite poor forestry habitat of a reduced conservative value due to the much continental climate (rain shadow effect) strongly implemented in the eastern Apuseni Mountains.

Romania – R4110

Natura 2000 - 9110 Luzulo-Fagetum Beech forests.

Palearctic 1999 41.1 D54. South Carpathian Festuca drymeja Beech forests.

Eunis G1. 6D54. South Carpathian Festuca drymeja Beech forests

Emerald 41.1 Beech forests.

Phytotaxonomy Festuco drymejeae – Fagetum Morariu et al. 1968

(coded in our releves as FAG).

13. Tilio-acerion forests of slopes, screes and ravines

Romania – R4117

Natura 2000 – 9180*

Palearctic 41.44642. Dacian ashsycamore ravine beech forest

Eunis G1. A464. Eastern Carpathian ravine forests

Emerald 41.4 Mixed ravine and slope forests.

Phytotaxonomy Aceret-fraxinetul Pauca 1941