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

BG0001042

1.3 Site name

Iskarski prolom - Rzhana

1.4 First Compilation date

2006-07

1.5 Update date

2018-12

1.6 Respondent:

Name/Organisation:Ministry of Environment and Water, “National Nature Protection Service” Directorate
Address:  Sofia  22    Sofia    1000  Kn. Maria Luiza Blvd. 
Email:natura2000@moew.government.bg

1.7 Site indication and designation / classification dates

Date site proposed as SCI:2007-03
Date site confirmed as SCI:2008-12
Date site designated as SAC: No data
National legal reference of SAC designation: No data
Explanation(s):Adopted by Council of Ministers Decision No. 122/02.03.2007 (promulgated SG 21/2007).

2. SITE LOCATION

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2.1 Site-centre location [decimal degrees]:

Longitude:23.496944
Latitude:43.028611

2.2 Area [ha]

22693.2600

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
BG31Severozapaden
BG41Yugozapaden

2.6 Biogeographical Region(s)

Alpine (95.15 %) Continental (4.85 %)

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
3260  info      2.88  0.00 
3270  info      0.41  0.00 
6110  info      7.65  0.00 
6210  info      771.87  0.00 
6430  info      15.72  0.00 
6520  info      562.03  0.00 
7220  info      0.32  0.00 
8110  info      9.42  0.00 
8210  info      35.12  0.00 
8220  info      34.52  0.00 
8230  info      28.24  0.00 
8310  info      23.00 
9110  info      194.68  0.00 
9130  info      2943.11  0.00 
9150  info      444.87  0.00 
9170  info      1295.32  0.00 
9180  info      758.39  0.00 
91CA  info      54.16  0.00       
91E0  info      1.04  0.00 
91G0  info      551.93  0.00 
91H0  info      1.67  0.00 
91I0  info      7.33  0.00       
91M0  info      418.11  0.00 
91W0  info      1693.47  0.00 
91Z0  info      89.8  0.00 
9260  info      0.35  0.00       
9530  info      1.32  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.
I1093Austropotamobius torrentium    193452  193452 
M1308Barbastella barbastellus    97  187 
F1138Barbus meridionalis    114382  114382 
A1193Bombina variegata    localities 
M1352Canis lupus   
I1088Cerambyx cerdo          DD 
F1149Cobitis taenia    987830  987830  area 
R1220Emys orbicularis        localities  DD 
I6199Euplagia quadripunctaria          DD 
P2327Himantoglossum caprinum          DD 
I1083Lucanus cervus          DD 
M1355Lutra lutra    10   
I1060Lycaena dispar          DD 
M1310Miniopterus schreibersii          DD       
I1089Morimus funereus    147136  170905 
M1323Myotis bechsteinii    101  250 
M1307Myotis blythii    11  50 
M1316Myotis capaccinii          DD       
M1321Myotis emarginatus          DD       
M1324Myotis myotis    11  50 
I4020Pilemia tigrina          DD 
M1305Rhinolophus euryale          DD       
M1304Rhinolophus ferrumequinum    51  100 
M1303Rhinolophus hipposideros    51  100 
M1302Rhinolophus mehelyi          DD       
F5339Rhodeus amarus          DD       
I1087Rosalia alpina          DD 
F1146Sabanejewia aurata    601930  601930  area 
R1217Testudo hermanni        localities  DD 
A1171Triturus karelinii    localities 
I1032Unio crassus       
M2635Vormela peregusna          DD 
  • 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
Ablepharus kitaibelii                   
Balkanopetalum armatum                   
Bittacus italicus                   
Brenthis hecate                   
Bufo viridis                   
Coluber caspius                   
Coronella austriaca                   
Duvalis pretneri                   
Duvalius papasoffi                   
Duvalius pretneri                   
Elaphe longissima                   
Hyla arborea                   
Lacerta viridis                   
Leuciscus cephalus                   
Lithobius lakatnicensis                   
Natrix tessellata                   
Neptis sappho                   
Noemacheilus barbatulus                   
Paranemastoma bureschi                   
Parnassius apollo                   
Parnassius mnemosyne                   
Phoxinus phoxinus                   
Podarcis muralis                   
Rana dalmatina                   
Saga pedo                   
Scolitantides orion                   
Speocyclops lindbergi                   
Typhloiulus bureschi                   
Vipera ammodytes                   
Zerynthia polyxena                   
  • 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
N0831.00
N098.00
N153.00
N1648.00
N1910.00

Total Habitat Cover

100

Other Site Characteristics

The pSCI incudes part of River Iskar Gorge through the main chain of Balkan Mountain, especialy its part called Rzhana. The zone also includes a valley of nedium tributary of River Iskar, but also a bio-corridor along smaller valley to mountain slopes facing the oposite site of the mountain. In the zone there well preserved forests especially in the higher mounatin part. The cave part of the site is a complex of abandoned mine galleries (N 43 00 35.2 E 23 26 18.7 WGS 84, alt. 1440) grilled between 1955 and 1965. The most important entrance for bats is the most upper one, which is a subject of regular landslides due to loose rocks.

4.2 Quality and importance

The zone is an important stepping-stones bio-corridor along Iskar river for fishes, but also for temophile fauna – in the area there are still vaiable populations of Testudo hermanni and this is the most high (in the case most south) location along Iskar river for this species. In the zone is situated one of the biggest known in Bulgaria population of Myotis bechsteinii and Barbastella barbastellus, both inhabiting in old beech and oak forests. This gallery of the cave Izdrimetz, which is with the sites boundaries, is very important swarming site (reproduction and social contacts) for all bat species, which are living in the area between end of August till October. 15 bat-boxes (type SCHWEGLER 2FN) are installed around the gallery and 10 more are hung at about 300 m in the forest below. The site "Izremets" is neighbouring to the area of the Monastery "Sedemta Prestola" where several colonies of Myotis bechsteinii, Nyctalus noctula and N. leisleri were recently discovered in tree hollows and bat boxes (25 are installed there). In table "Ecological Information - Other Important species", the species justified by 'A-National' are not necessarily included in the National Red Data Book, because its last edition is too old (1985), not up-dated and has no legislative value. The species indicated by 'A-National' are the protected flora and fauna species, included in the Bulgarian Biodiversity Act, and therefore this motivation is given highest priority.

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]
LA02i
HA04.03i
LA07i
LA08i
HBi
HB01.02i
HB02.01i
HB02.02o
HB02.02i
MB02.03i
MB02.04i
MB03i
MC01.01i
MC01.04i
LD01.02i
LD02.01i
ME01i
ME02i
ME03.01i
ME03.03i
HF03.01i
LF03.02i
MF03.02.01i
HF03.02.03i
LF04i
MG01.03i
LH07i
MJ01i
HJ02i
MJ02.03i
HJ02.05i
Positive Impacts
RankActivities, management [code]Pollution (optional) [code]inside/outside [i|o|b]
MA05.01i

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

4.5 Documentation

Initial proposal and description of the site made by Balkani Wildlife Society, office@balkani.org , tel.:+359 2 963 14 70; Centre for Environmental Information and education, ceie@ceie.org , tel.: +359 2 980 8497; Boyan P. Petrov - NMNH, BAS, boyanpp@nmnh.bas.bg. Initially listed documents: Petrov B. 2006. Distribution and status of Myotis bechsteinii in Bulgaria (Chiroptera: Vespertilionidae).- Lynx n.s., Praha, 37: 179-195. Data revised by a team of Bulgarian Academy of Sciences (http://www.bas.bg). New data provided by project "Mapping and assessment of the conservation status of the natural habitats and species - Phase 1" (see link).
http://natura2000.moew.government.bg/Home/ProtectedSite?code=BG0001042&siteType=HabitatDirective

5. SITE PROTECTION STATUS

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5.1 Designation types at national and regional level:

Code Cover [%]
BG0095.08
BG030.09
BG064.84

5.2 Relation of the described site with other sites:

Designated at national or regional level:

Type code Site name Type Cover [%]
BG06Treskavetz+4.84
BG03Sedemte prestola+0.09

6. SITE MANAGEMENT

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6.1 Body(ies) responsible for the site management:

Organisation:Regional Inspectorate of Environment and Water: Vratsa, Sofia
Address:
Email:

6.2 Management Plan(s):

An actual management plan does exist:

Yes
No, but in preparation
X
No

6.3 Conservation measures (optional)

Consolidation of the cave entrance's arc is urgently needed in order to guarantee it long-term existence. Regular monitoring is highly recommended to avoid negative impacts.

 

7. MAP OF THE SITE

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SITE DISPLAY