For Special Protection Areas (SPA), Proposed Sites for Community Importance (pSCI),
Sites of Community Importance (SCI) and for Special Areas of Conservation (SAC)
PF: for the habitat types that can have a non-priority as well as a priority form (6210, 7130, 9430) enter "X" in the column PF to indicate the priority form.
NP: in case that a habitat type no longer exists in the site enter: x (optional)
Cover: decimal values can be entered
Caves: for habitat types 8310, 8330 (caves) enter the number of caves if estimated surface is not available.
Data quality: G = 'Good' (e.g. based on surveys); M = 'Moderate' (e.g. based on partial data with some extrapolation); P = 'Poor' (e.g. rough estimation)
3.2 Species referred to in Article 4 of Directive 2009/147/EC and listed in Annex II of Directive 92/43/EEC and site evaluation for them
Group: A = Amphibians, B = Birds, F = Fish, I = Invertebrates, M = Mammals, P = Plants, R = Reptiles
S: in case that the data on species are sensitive and therefore have to be blocked for any public access enter: yes
NP: in case that a species is no longer present in the site enter: x (optional)
Type: p = permanent, r = reproducing, c = concentration, w = wintering (for plant and non-migratory species use permanent)
Unit: i = individuals, p = pairs or other units according to the Standard list of population units and codes in accordance with Article 12 and 17 reporting (see reference portal)
Abundance categories (Cat.): C = common, R = rare, V = very rare, P = present - to fill if data are deficient (DD) or in addition to population size information
Data quality: G = 'Good' (e.g. based on surveys); M = 'Moderate' (e.g. based on partial data with some extrapolation); P = 'Poor' (e.g. rough estimation); VP = 'Very poor' (use this category only, if not even a rough estimation of the population size can be made, in this case the fields for population size can remain empty, but the field "Abundance categories" has to be filled in)
3.3 Other important species of flora and fauna (optional)
Group: A = Amphibians, B = Birds, F = Fish, Fu = Fungi, I = Invertebrates, L = Lichens, M = Mammals, P = Plants, R = Reptiles
CODE: for Birds, Annex IV and V species the code as provided in the reference portal should be used in addition to the scientific name
S: in case that the data on species are sensitive and therefore have to be blocked for any public access enter: yes
NP: in case that a species is no longer present in the site enter: x (optional)
Unit: i = individuals, p = pairs or other units according to the standard list of population units and codes in accordance with Article 12 and 17 reporting, (see reference portal)
Cat.: Abundance categories: C = common, R = rare, V = very rare, P = present
Motivation categories: IV, V: Annex Species (Habitats Directive), A: National Red List data; B: Endemics; C: International Conventions; D: other reasons
Piccola area pianeggiante posta in prossimità dell'abitato di Norcia, dove si conserva l'unico esempio di prati marciti dell'Appennino centrale e meridionale. Si tratta di un'area ricca di risorgive e solcata da un reticolo di canali, che viene periodicamente inondata, secondo pratiche che risalgono al medioevo, per consentire la produzione di una maggiore quantità di fieno. La vegetazione è data, all'interno dei canali, da cenosi idrofitiche dello Sparganio-Glycerion fluitantis (3260) e sui prati marciti da formazioni umide riferibili al Trifolio-Hordeetalia. Caratteristici sono poi i filari di Populus nigra var. italica che delimitano le sponde del Fiume Sordo.
4.2 Quality and importance
I prati marciti di Norcia, estesi per pochi ettari nei dintorni della città, sono l'unico esempio appenninico di tale ambiente. Essi caratterizzano un ambito paesaggisticamente unico e di grande valore naturale oltre che storico (le pratiche colturali risalgono al tardo medioevo). Particolare significato geobotanico rivestono poi le fitocenosi idrofitiche del Fiume Sordo che alimenta tali ambienti. Tra le specie floristiche sono state indicate Caltha palustris, Iris pseudacorus, Lemna gibba, Lemna trisulca e Salix cinerea, rare a livello regionale. Tra la fauna è stato indicato anche il tricottero Adicella cremisa (specie stenotopa dei prati marciti), Cettia cetti (specie stenotopa legata alla vegetazione ripariale e Neomys fodiens (altro elemento stenotopo molto raro).
4.3 Threats, pressures and activities with impacts on the site
The most important impacts and activities with high effect on the site