New national and regional Annex I Habitat records: from #83 to #101

New Italian data on the distribution of 17 Annex I Habitats are reported in this contribution. Specifically, 11 new occurrences in Natura 2000 sites are presented and 30 new cells are added in the EEA 10 km × 10 km reference grid. The new data refer to the Italian administrative regions of Apulia, Campania, Calabria, Lazio, Sardinia, Sicily and Tuscany.


Introduction
This is the ninth contribution reporting records of new occurrences of Annex I Habitats (92/43/EEC Directive) in Europe.Based on the results of the 4th Report ex-Art.17 on Annex I Habitat Monitoring in Europe (Eionet 2019), these cell occurrences are newly recorded for Italy.The related phytosociological relevés of each contribution are reported and archived in the Italian database "VegItaly" (Gigante et al. 2012;Landucci et al. 2012).

Habitats records
Following the standard format of Gigante et al. (2019b), all species data, site data and descriptions of the new habitat records are hereafter provided.We provide a summary in Tab. 1, offering an overview of the novelties.We used the open source QGIS Geographic information System (QGIS.org2020) for mapping purposes.Relevés and figures are provided as Supplementary material respectively 1 and 2.
Notes: These cenoses are developed on the banks of the "fiumare" of Cilento, along the course of the main rivers of the National Park: Calore Lucano, Bussento, Alento and Mingardo (Fig. S10).These are the first reported sites of occurrence of this habitat for Campania Region in the area of the "Cilento, Vallo di Diano and Alburni" National Park.
The authors thank "Azienda Speciale Silvo Pastorale del Comune di Troina" for its support during the fieldwork.

Phytosociological reference: Alysso alyssoidis-Sedion
Oberd. and T. Müller in T. Müller 1961, Alysso-Sedetalia Moravec 1967, Sedo-Scleranthetea Br.-Bl. 1955(Mucina et al. 2016).Geographic information: Italy, Lazio, Rome, Aguzzano Urban Park , 28 m a.s.l., Coordinates: 41.938889 N, 12.571111 E (Suppl.material 1, Table S13, Rel. 1).Cell ID in the EEA reference grid: 10kmE453N209 (Suppl.material 2, Figure S15).Natura 2000 Site Code: currently not included in any Natura 2000 Site.Phytosociological table: Suppl.material 1, Table S13; nomenclature and taxa delimitation according to Portal to the Flora of Italy (2023).Notes: The Habitat 6110* has been reported also into the cells 10kmE454N209 and 10kmE455N209 which are adjacent (toward east) to the cell 10kmE453N209.Despite the two former cells include parts of the territory of the Rome Municipality, the Habitat was only previously known to be present in the Municipality of Tivoli, into the SAC "Travertini Acque Albule (Bagni di Tivoli)" (see also Iamonico and Di Pietro 2018;Di Pietro et al. 2022).So, our discovery represents the first one for the Rome Municipality.Worth of note is that the Aguzzano Urban Park is included into the Great Ring Junction of Rome and embedded into an urban matrix.In this landscape context, the detected habitat was expected to be affected by degradation due to human pressures (e.g. for the presence of alien and ruderal species).In fact, as reported in the relevé (Suppl.material 1, Table S13), we found Crepis sancta L. subsp.nemausensis (P.Fourn.)Babc., an alien species for Italy, which is frequent.
Natura 2000 Site Code: currently not included in any Natura 2000 Site.Phytosociological table: Suppl.material 1, Table S16; nomenclature and taxa delimitation according to Portal to the Flora of Italy (2023).Notes: The habitat hosts a population of Ptilostemon gnaphaloides, an eastern Mediterranean species that grows spontaneously in Italy only on the cliffs of eastern Calabria, which is assessed, according to IUCN criteria, as vulnerable (Conti et al. 1997).The phytocenosis found is related to Erucastretum virgatae Brullo and Marcenò 1979, an association of Dianthion rupicolae Brullo and Marcenò 1979 distributed in southern Calabria and North-Eastern Sicily.The presence of Ptilostemon gnaphaloides also allows the community to be assigned to the subassociation Erucastretum virgati centaureetosum ionicae Brullo and Marcenò 1979, exclusive to the Ionian slopes of Central-Southern Calabria (Brullo et al. 2001a;Brullo and Spampinato 2003;Spampinato et al. 2009).

Biogeographical Region: Mediterranean
The identified nuclei concern two different riparian formations -clearly dominated, respectively, by P. alba (Rels 1-2) and P. nigra (Rels 3-4) -both attributable to habitat 92A0.The aspects of P. nigra (Rel.3) are relatively more common in Sicily (Brullo and Spampinato 1990), although not yet indicated for this area.Relevés 1 and 2, on the other hand, characterize interesting aspects clearly dominated by P. alba, which are much rarer, both in the Nebrodi Mountains and in Sicily.They are generally associated with cooler and more humid stretches of watercourses, where they typically have a punctual and fragmented distribution.The stations identified in the territory of the Mirto municipality are located between the branches of the Vallone Tiberio and the stream near the Case della Fornace; they add to other interesting wet sites recently reported for the Nebrodi area (De Castro et al. 2008Castro et al. , 2015;;Troia et al. 2017), but also for other parts of Sicily (Caldarella et al. 2009(Caldarella et al. , 2013(Caldarella et al. , 2021;;Gianguzzi et al. 2013Gianguzzi et al. , 2021;;Gianguzzi and La Mantia 2008;Sciandrello et al. 2022).
This research is supported by NBFC to University of Palermo, funded by the Italian Ministry of University and Research, PNRR, Missione 4 Componente 2, "Dalla ricerca all'impresa", Investimento 1.4, Project CN00000033.

Notes:
The oleaster vegetation of Sicily has been the subject of recent phytosociological studies (Gianguzzi andBazan 2019, 2020), as well as distributional surveys, which led to updating habitat 9320 (Gianguzzi et al. 2020;Bazan et al. 2021).Further geobotanical investigations of floristic and phytosociological character in inland Sicily (Gianguzzi et al. 2014) have led to the identification of other interesting stands of the habitat in the territory of the Agrigento province.They are phytosociologically referred to the associations Chamaeropo humilis-Oleetum sylvestris acanthetosum mollis, on calcarenite substrates (Suppl.material 1, Tab.S18, Rels 1-3) and on limestones (Suppl.material 1, Tab.S18, Rel. 4), and Ruto chalepensis-Oleetum sylvestris oleetosum sylvestris, on gypsum substrates (Suppl.material 1, Tab.S18, Rels 5-8).The identified formations, based on their characteristics, appear to be natural.In fact, the oleaster has been extensively used by humans for agricultural purposes as a rootstock for the olive tree.In many cases in Sicily, changes in farming systems (Bazan et al. 2020) and the abandonment of old olive groves, sometimes centuries-old (Schicchi et al. 2021) Notes: In the study area, along the coastal rocky from Villanova to T. Santa Sabina, it is possible to observe many small depressions, directed roughly N-S, that starting from the coastline head in the hinterland (Figure S26).In one of these places, at about 1 km from the seacoast in a locality named "Pozzella", there is a very interisting cork oak site with over 50 individuals, many of which are centuries old.This population represent the westernmost limit of the species and also of his habitat and, therefore, must be considered of great phytogeographical interest.This site is rather hidden and difficult to observe, and for this reason it was previously overlooked by botanists, that surveyed other cork places located further inland in the same municipality of Ostuni (Biondi et al. 2004, Beccarisi et al. 2010).

Cell ID in the EEA reference grid: 10kmE425N200
The habitat had not been reported previously, likely because it was confused with the 2210 habitat "Crucianellion maritimae fixed beach dunes".meters with the 2210 habitat.We also recorded the presence of the invasive alien species Carpobrotus acinaciformis.

Cell ID in the EEA reference grid: 10kmE442N227
Potametum natantis Hild 1959, Potamogetonion Libbert 1931, Potamogetonetalia Koch 1926, Potamogetonetea Klika in Klika et Novak 1941 (Mucina et al. 2016).Geographic information: Italy, Tuscany, Siena, Radda in Chianti, 451 m a.s.l., Coordinates: 43.50849 N, 11.39667 E (Suppl.material 1, Table S6, Rel.1); 449 m a.s.l., Coordi-Suppl.material 1, Table S7; nomenclature and taxa delimitation according to Portal to the Flora of Italy (2023).Notes: Lemnetum gibbae and Parvopotamo-Zannichellietum palustris vegetation occur in correspondence of the mouth of the Patemisco River (Suppl.material 2, Figure S7), a few kilometres from Taranto, in close proximity to a freshwater spring; the latter is, in turn, covered by dense stands of Lemna minuta.This vegetation is in contact with Helosciadietum nodiflori Br.-Bl.1952 and Phragmitetum communis (Koch 1926) Schmale 1939 (Spampinato et al 2023).The area is subject to intense tourist use, but what is likely to impact most the habitat is nitrate pollution of waters due to the influx from the surrounding intensively cultivated areas.the Natura 2000 network.The relevés represent only a small sample of the target vegetation actually present in this area.
Phytosociological table: Suppl.material 1, Table work was included in a project funded under the National Recovery and Resilience Plan (NRRP), Mission 4 Component 2 Investment 1.4 -Call for tender No. 3138 of 16 December 2021, rectified by Decree n.3175 of 18 December 2021 of Italian Ministry of University and Research funded by the European Union -NextGeneratio-nEU.Project code CN_00000033, Concession Decree No. 1034 of 17 June 2022 adopted by the Italian Ministry of University and Research, CUP B83C22002950007, Project title "National Biodiversity Future Center -NBFC".

Table 1 .
Synthetic overview of the newly reported data .
Cell ID in the EEA reference grid: 10kmE496N199 (Suppl.material2,FigureS25)Natura 2000 Site Code: currently not included in any Natura 2000 Site.Phytosociological table: