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

DK00FX257

1.3 Site name

Havet omkring Nordre Rønner

1.4 First Compilation date

1998-05

1.5 Update date

2018-01

1.6 Respondent:

Name/Organisation:NST
Address:               
Email:nst@nst.dk

1.7 Site indication and designation / classification dates

Date site proposed as SCI:1998-05
Date site confirmed as SCI:2005-01
Date site designated as SAC:2011-12
National legal reference of SAC designation:BEK nr 1114 af 25/11/2011 om ikrafttræden af målsætning og indsatsprogram i Natura 2000-planerne for planperiode 2010-2015

2. SITE LOCATION

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2.1 Site-centre location [decimal degrees]:

Longitude:0.000000
Latitude:0.000000

2.2 Area [ha]

18535.0000

2.3 Marine area [%]

100.0000

2.4 Sitelength [km]:

0.00

2.6 Biogeographical Region(s)

Marine Atlantic (0.00 %)

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
1110  info  X     7000  0.00 
1140  info      0.00 
1170  info      900  0.00 
1180  info      2400  0.00 
1210  info      6.29  0.00 
1220  info      0.00 
1310  info      0.00     
1330  info      0.44  0.00 
2110  info      0.1  0.00 
2120  info      0.1  0.00 
2130  info      0.1  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.
M1364Halichoerus grypus          DD 
M1365Phoca vitulina    243  243  Individ   
M1351Phocoena phocoena                 
  • 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
  • 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
N01100.00

Total Habitat Cover

100

Other Site Characteristics

Habitatområdet er karakteriseret ved de mange små holme, Store Stenholm, Lille Stenholm, Spirholm og Langholm, der til sammen er på ca. 100 ha og som indbyrdes er forbundet af stenede tanger. Området er af marin oprindelse og er i geologisk sammenhæng dannet ved udvaskning af Yngre Yoldialer - en proces, der begyndte for 4 - 5000 år siden, da Læsø dukkede op af havet. Stenrevet Per Nilen´s udstrækning er ikke systematisk opmålt, men der er gennemført dykkerundersøgelser i udvalgte punkter. På de undersøgte stationer forekommer tætte stenforekomster fra 6 og ned til 10-11 meters dybde. På 11 meters dybde tiltager andelen af sand og grus. Revet er helt domineret af en tæt flerlaget algevegetation. Faunaen er ikke markant og indgår ikke som strukturerende element på revet.

4.2 Quality and importance

Området indgår i det nationale overvågningsprogram for marin bundvegetation. Området er karakteristisk ved sin tætte flerlagede algevegetation. Stenrevet er af væsentlig biologisk betydning p.g.a. den tætte samling af endog meget store sten dækkende samtlige zoner i den marinbotaniske zonering.

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]
LF02.02i
LI01i
Positive Impacts
RankActivities, management [code]Pollution (optional) [code]inside/outside [i|o|b]

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

Journal nr. NST-41519-00046, SNS 2001-8625/42-0001, SNS 2001-8625/42-0003, DMU 111/301-0011 og DMU 201/3-0043, SNS 2001-8625/42-0014, BLST 3129-00047, SNS 2001-8625/42-0018, SNS 2001-8625/42-0025

5. SITE PROTECTION STATUS

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6. SITE MANAGEMENT

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6.2 Management Plan(s):

An actual management plan does exist:

X
Yes Name: De 246 Natura 2000-planer 2010-2015 for Danmark
Link: http://www.naturstyrelsen.dk/Naturbeskyttelse/Natura2000/Natura_2000_planer/Se_Planerne/

No, but in preparation
No

 

7. MAP OF THE SITE

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INSPIRE ID:Dk.nst.ps.SAC176
Map delivered as PDF in electronic format (optional)
Yes
No

SITE DISPLAY