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

UK0013117

1.3 Site name

Pen Llŷn a`r Sarnau/ Lleyn Peninsula and the Sarnau

1.4 First Compilation date

1996-01

1.5 Update date

2015-12

1.6 Respondent:

Name/Organisation:Joint Nature Conservation Committee
Address:               
Email:
Date site proposed as SCI:1996-01
Date site confirmed as SCI:2004-12
Date site designated as SAC:2004-12
National legal reference of SAC designation:Regulations 11 and 13-15 of the Conservation of Habitats and Species Regulations 2010 (http://www.legislation.gov.uk/uksi/2010/490/contents/made).

2. SITE LOCATION

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2.1 Site-centre location [decimal degrees]:

Longitude:-4.366389
Latitude:52.691389

2.2 Area [ha]

146010.5200

2.3 Marine area [%]

98.8000

2.4 Sitelength [km]:

0.00

2.5 Administrative region code and name

NUTS level 2 code Region Name
UKL1West Wales and The Valleys
UKL2East Wales

2.6 Biogeographical Region(s)

Atlantic (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
1110  info      10658.8  0.00  G  
1130  info      4526.33  0.00  G  
1140  info      3358.24  0.00  G  
1150  info  X     73.01  0.00  G  
1160  info      41321  0.00  G  
1170  info      33436.4  0.00  G  
1310  info      146.01  0.00  G  
1320  info      0.00  G        
1330  info      730.05  0.00  G  
8330  info      146.01  0.00  G  
  • 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.
F1102Alosa alosa                 
F1103Alosa fallax                 
M1364Halichoerus grypus    101  250     
F1099Lampetra fluviatilis                 
M1355Lutra lutra           
F1095Petromyzon marinus                 
M1351Phocoena phocoena                 
M1349Tursiops truncatus           
  • 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
N0192.60
N025.40
N031.20
N040.50
N050.20
N070.10

Total Habitat Cover

100

Other Site Characteristics

1 Terrestrial: Soil & Geology: sand,sedimentary,shingle,clay,igneous,metamorphic,mud 2 Terrestrial: Geomorphology and landscape: caves,coastal,island,floodplain 3 Marine: Geology: metamorphic,sedimentary,igneous,mud,gravel,cobble,biogenic reef,sand,pebble,maerl,boulder,clay,peat,slate/shale 4 Marine: Geomorphology: open coast (including bay),cliffs,estuary,lagoon,surge gullies,subtidal sediments (including sandbank/mudbank),subtidal rock (including rocky reefs),sound/strait,islands,intertidal sediments (including sandflat/mudflat),intertidal rock,cave/tunnel,basins

4.2 Quality and importance

Sandbanks which are slightly covered by sea water all the time for which this is considered to be one of the best areas in the United Kingdom. Estuaries for which this is considered to be one of the best areas in the United Kingdom. Mudflats and sandflats not covered by seawater at low tide for which the area is considered to support a significant presence. Coastal lagoons for which this is considered to be one of the best areas in the United Kingdom. Large shallow inlets and bays for which this is considered to be one of the best areas in the United Kingdom. Reefs for which this is considered to be one of the best areas in the United Kingdom. Submerged or partially submerged sea caves for which the area is considered to support a significant presence. Salicornia and other annuals colonising mud and sand for which the area is considered to support a significant presence. Atlantic salt meadows (Glauco-Puccinellietalia maritimae) for which the area is considered to support a significant presence. Lutra lutra for which the area is considered to support a significant presence. Halichoerus grypus for which the area is considered to support a significant presence. Tursiops truncatus for which the area is considered to support a significant presence.

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]
HA04I
MB02B
HF02B
MG01B
HG05I
MH01B
MH02B
MH03B
HI01B
HJ02B
MM01B
Positive Impacts
RankActivities, management [code]Pollution (optional) [code]inside/outside [i|o|b]
MA04B
MD01I
MG01I
MG02I
MG03B

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

The Natural Resources Wales weblink below provides access to information on its designated sites. Detailed information about this Natura 2000 site can be accessed via the Management Plan link provided in Section 6.2. See also the 'UK Approach' document for more information (link via the JNCC website).
http://jncc.defra.gov.uk/pdf/Natura2000_StandardDataForm_UKApproach_Dec2015.pdf
https://naturalresources.wales/conservation-biodiversity-and-wildlife/find-protected-areas-of-land-and-seas/designated-sites-search/?lang=en

5. SITE PROTECTION STATUS

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5.1 Designation types at national and regional level:

Code Cover [%]
UK0095.40
UK011.60
UK044.60

6. SITE MANAGEMENT

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6.1 Body(ies) responsible for the site management:

Organisation:Natural Resources Wales
Address:
Email:

6.2 Management Plan(s):

An actual management plan does exist:

X
Yes Name: PEN LLYN A'R SARNAU / LLEYN PENINSULA AND THE SARNAU
Link: https://www.naturalresources.wales/media/673816/Pen%20Llyn%20ar%20Sarnau%20%20R33%20Feb%202009.pdf

No, but in preparation
No

 

7. MAP OF THE SITE

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SITE DISPLAY