Database release:
SDF
NATURA 2000 - STANDARD DATA FORM

For Special Protection Areas (SPA),
Proposed Sites for Community Importance (pSCI),
Sites of Community Importance (SCI) and
for Special Areas of Conservation (SAC)

TABLE OF CONTENTS

1. SITE IDENTIFICATION

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1.1 Type

B

1.2 Site code

MT0000004

1.3 Site name

Il-Maqluba (limiti tal-Qrendi)

1.4 First Compilation date

2004-04

1.5 Update date

2012-09

1.6 Respondent:

Name/Organisation:Environment and Resources Authority
Address:  Biodiversity Unit             
Email:natura.2000@era.org.mt
Date site proposed as SCI:2004-04
Date site confirmed as SCI:2008-03
Date site designated as SAC: No data
National legal reference of SAC designation: No data

2. SITE LOCATION

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2.1 Site-centre location [decimal degrees]:

Longitude:14.458300
Latitude:35.831900

2.2 Area [ha]

2.6200

2.3 Marine area [%]

0.0000

2.4 Sitelength [km]:

0.00

2.5 Administrative region code and name

NUTS level 2 code Region Name
MT00Malta

2.6 Biogeographical Region(s)

Mediterranean (100.00 %)

3. ECOLOGICAL INFORMATION

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3.1 Habitat types present on the site and assessment for them

Annex I Habitat types Site assessment
Code PF NP Cover [ha] Cave [number] Data quality A|B|C|D A|B|C
      RepresentativityRelative SurfaceConservationGlobal
5230  info      0.330644  0.00 
8210  info      0.16113  0.00 
9570  info      0.013886  0.00 
  • 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

Species Population in the site Site assessment
G Code Scientific Name S NP T Size Unit Cat. D.qual. A|B|C|D A|B|C
      MinMax  Pop.Con.Iso.Glo.
  • 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)

Species

Population in the site

Motivation

Group CODE Scientific Name S NP Size Unit Cat. Species Annex Other categories
     MinMax C|R|V|PIVVABCD
Amanita verna               
Amaurops mifsudi               
Arcyria insignis               
Arcyria obvelata               
Arum italicum               
Bathytropa schembrii               
Ceratiomyxa fruticulosa               
Ceratonia siliqua               
Chiliadenus bocconei               
Comatricha nigra               
Crataegus monogyna               
Daldinia concentrica               
Darniella melitensis               
Deroceras golcheri               
Diderma hemisphaericum               
Didymium quitense               
Didymium trachysporum               
Enerthenema papillatum               
Enteridium splendens               
Hedera helix               
Iris sicula                 
Laurus nobilis               
Lepismachilis sp.               
Leptothorax rabaudi               
Paratrechina longicornis               
Parietaria lusitanica               
Physarum bogoriense               
Physarum nutans               
Physarum viride               
Pistacia lentiscus               
Punica granatum                 
Rhamnus oleoides               
Stemonitis cf. virginiensis               
Stemonitis flavogenita               
Stemonitis smithii               
Strumigenys lewisi               
Tetraclinis articulata                 
Torneuma maltense               
  • 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

4. SITE DESCRIPTION

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4.1 General site character

Habitat class % Cover
N097.00
N235.00
N0831.00
N1557.00

Total Habitat Cover

100

Other Site Characteristics

This site consists of a deep, large-scale inland collapsed solution structure. It is the best example within the Maltese Islands and it is probably a doline. It was caused by dissolution of limestone followed by cavern collapse. This may take place again due to the sink-hole present underneath.The geological structure of this site is of particular interest as in Malta it is the largest conspicuous doline completely isolated from the sea. (There are other large dolines isolated from the sea, but these are not as conspicuous as Il-Maqluba as they are filled with sediment). Thus, it potentially provides a habitat that is unique within the Maltese Islands. The doline is sufficiently large such that it is suitable for agriculture due to the fact that there is shelter from wind, a high extent of humidity and the presence of soil cover. In fact, the doline bed has been cultivated in the past, and a fruit orchard was possibly present. The remnants of rubble walls in the doline bed indicate agricultural practices. Although such practices were abandoned, the doline now supports an important population of Laurus nobilis. Then, the sides of the cavity constitute a mixed rupestral and maquis vegetation. This includes Darniella melitensis, Tetraclinis articulata, Hedera helix, Capparis orientalis, Ficus carica and Opuntia ficus-indica. The doline bed has a greater species richness than the vertical walls.

4.2 Quality and importance

This Natura 2000 site is important as the doline bed supports a dense maquis which is dominated by Laurus nobilis, this being locally rare, with a restricted distribution throughout the Maltese Islands (National RDB). The Bay Laurel tree is a characteristic Mediterranean tree and a true Maltese native, as is confirmed by fossil evidence. The Laurus nobilis community present at this site is relatively important. It is undisturbed, and it is the only site in Malta where they are found that is humid (they grow better in such conditions). Otherwise, such a community is extremely rare across the Maltese Islands due to a lack of humid areas. Also, only a few communities reach the height of the trees found at this site.The immediate area around the dense maquis that is dominated by Laurus nobilis (i.e. the collapsed area), also supports a maquis that is dominated by Ceratonia siliqua and Crataegus monogyna. Other maquis species present in the area include Pistacia lentiscus, Rhamnus oleoides, Punica granatum, Asparagus aphyllus, Lonicera implexa and Smilax aspera, as well as Arundo donax. Most of the trees in the area are legally protected through Legal Notice 12 of 2001 Trees and Woodlands (Protection) Regulations.The undergrowth consists of Acanthus mollis, Smyrnum olusatrum and saplings of Laurus nobilis. Then, the most important sciaphilo-nitrophilus undergrowth vascular plant species is Arum italicum. Il-Maqluba itself, particularly the maquis and its trees, are important for macrofungi and myxomycetes, which include many species that are confined to this area or with a restricted distribution in the Maltese Islands.The fungus Daldinia concentrica is locally rare with a restricted distribution. It is only found in a few localities and it is found growing on dead branches (on Carob and Laurel wood). Amanita verna is also locally very rare with a restricted distribution. A number of other fungi, including various myxomycetes, have been recorded from Il-Maqluba, most of which were found growing on dead wood. However, not much information is available. More studies / surveys are required in order to designate their status.The wall and crevices in the rock house an interesting community of species requiring shady humid conditions. These include the ferns Adiantum capillus-veneris and Anogramma leptophylla, as well as the rare Mediterranean Pellitory Parietaria lusitanica (which is scarce in the area and is overall locally rare, occuring in small numbers in a few valleys of Malta and Gozo).Crevices in more 'exposed' parts include a small population of the very rare Tetraclinis articulata, a species known from Malta and Spain only in the Mediterranean.The few Tetraclinis articulata trees present are definitely not a forest, and hence, the community present at this site does not compare very well to the Tetraclinis articulata forest habitat described in the Interpretation Manual for the Habitats in the Habitats Directive. This Arbor-vitae or Xero-thermophile assemblage is only made up of about 4 or 5 specimens that occur on the upper vertical walls of the doline.In the more exposed crevices and fissures, Darniella melitensis, with Capparis orientalis, the alien Opuntia ficus-indica and Chiliadenus bocconei are present.Darniella melitensis is endemic to the Maltese Islands and is the only European representative of the genus Darniella; protected through Legal Notice 12 of 2001 - Trees and Woodlands (Protection) Regulations in Schedule I - Strictly Protected Trees. Calcareous rocky slopes with chasmophytic vegetation refers to the occurrence of Darniella melitensis. At Il-Maqluba, it is mainly found on the vertical doline walls, forming only a fringe of vegetation along the doline. Being an endemic species and the only species of Darniella across Europe, the community at this site is definitely unique and also far from the description given for this type of habitat in the Interpretation Manual.Chiliadenus bocconei is possibly the commonest of our endemic plants.Darniella melitensis and Chiliadenus bocconei are both palaeoendemics of North African / Saharan affinities. On the other hand, Tetraclinis articulata is of Maghrebian affinity.Another interesting point is the fact that the rare Siculo-Maltese endemic Iris sicula is also reported from Il-Maqluba. This is considered to be locally vulnerable and it has a restricted distribution.Other plant communities present at the site include the following: - Reedbeds: stands of Arundo donax (within the doline) - Carob scrub: based upon Ceratonia siliqua (within the doline and also in the surrounding area); this is probably of secondary origin - Ruderal assemblage: large tract of 'disturbed ground' with weedy species (within the doline) - Mediterranean subnitrophilous grass communities: based upon Stipa capensis and Avena spp. (in the area outside the doline) - Ermes: this is based upon Urginea pancration and Ferula communis - Cultivated areas: a number of cultiavted fields, mainly bearing seasonal crops, occur around the upper rim of the doline structureWith respect to fauna, some interesting species occur: - Strumigenys lewisi: this ant is only found at Il-Maqluba when considering the Maltese Islands and it is considered to be a tramp species - Deroceras golcheri: this is an endemic slug (National RDB) and Il-Maqluba is a type locality for this mollusc; it was first described from Il-Maqluba but it is quite widespread throughout the Maltese Islands; it may also be possibly found on the Italian island of Montecristo - Bathytropa schembrii: this woodlouse is possibly endemic to Malta (not as yet found on any of the other Maltese Islands) and possibly it is also very rare (National RDB); it is only known from Attard, Buskett (type locality) and Il-Maqluba, it being common in these three localities - Leptothorax rabaudi and Paratrechina longicornis: rare ants - Lepismachilis sp.: a silverfish species The doline bed is also particularly important for cryptofauna, particularly those that require deep layers of leaf litter in shady and humid conditions.Furthermore, a number of soil-inhabiting species have been found in soil at 10-30cm depth, often under trees, many of which have been recently described as new species to science, endemic to the Maltese Islands. These include the endogean beetles: - Amaurops mifsudi: an endemic beetle known from Il-Buskett and Il-Maqluba (Poggi, 1999) - Torneuma maltense: an endemic beetle known from Il-Ballut l/o Wardija, Il-Buskett, Il-Maqluba, L-Imtahleb, San Blas and Wied Babu (Magnano & Mifsud, 2001)

4.3 Threats, pressures and activities with impacts on the site

The most important impacts and activities with high effect on the site

Negative Impacts
RankThreats and pressures [code]Pollution (optional) [code]inside/outside [i|o|b]
LA05.01o
MB01.02i
HA07o
LA09o
HA01o
LD05i
HG05o
MF03.01o
HE01.03b
HA08o
ME03i
LA01i
LA05o
MI01i
LE04.01i
LE03.01i
Positive Impacts
RankActivities, management [code]Pollution (optional) [code]inside/outside [i|o|b]
MA04.03i

Rank: H = high, M = medium, L = low
Pollution: N = Nitrogen input, P = Phosphor/Phosphate input, A = Acid input/acidification,
T = toxic inorganic chemicals, O = toxic organic chemicals, X = Mixed pollutions
i = inside, o = outside, b = both

5. SITE PROTECTION STATUS

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6. SITE MANAGEMENT

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6.1 Body(ies) responsible for the site management:

Organisation:Environment and Resources Authority
Address:
Email:natura.2000@era.org.mt

6.2 Management Plan(s):

An actual management plan does exist:

Yes
No, but in preparation
X
No

 

7. MAP OF THE SITE

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INSPIRE ID:MT0000004
Map delivered as PDF in electronic format (optional)
Yes
No

SITE DISPLAY