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

A

1.2 Site code

UK9014041

1.3 Site name

Grassholm

1.4 First Compilation date

1986-01

1.5 Update date

2015-12

1.6 Respondent:

Name/Organisation:Joint Nature Conservation Committee test
Address:               
Email:

1.7 Site indication and designation / classification dates

Date site classified as SPA:1986-01
National legal reference of SPA designationRegulations 12A and 13-15 of the Conservation Habitats and Species Regulations 2010, (http://www.legislation.gov.uk/uksi/2010/490/contents/made) as amended by The Conservation of Habitats and Species (Amendment) Regulations 2011 (http://www.legislation.gov.uk/uksi/2011/625/contents/made).

2. SITE LOCATION

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2.1 Site-centre location [decimal degrees]:

Longitude:-5.479800
Latitude:51.731100

2.2 Area [ha]

1774.4200

2.3 Marine area [%]

99.5000

2.4 Sitelength [km]:

0.00

2.5 Administrative region code and name

NUTS level 2 code Region Name
UKL1West Wales and The Valleys

2.6 Biogeographical Region(s)

Atlantic (100.00 %)

3. ECOLOGICAL INFORMATION

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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.
BA016Morus bassanus    33000  33000       
  • 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
N0199.40
N020.10
N050.20
N090.30

Total Habitat Cover

100

Other Site Characteristics

Soil & Geology: Basalt, Igneous, Nutrient-rich Geomorphology & landscape: Coastal, Crags/ledges, Island, Marine

4.2 Quality and importance

REGULARLY OCCURRING MIGRATORY SPECIES (ARTICLE 4.2) During any season: Northern Gannet Morus bassanus 33,000 pairs in breeding season, 12.5% of the breeding North Atlantic population (count as at 1994/5) NB: The Gannet (Morus bassanus) is listed in section 3.2 of this form as "Sula bassana" - the former scientific name for this species. This is because the EU reference species list used on the Natura 2000 standard data form pre dates this taxonomic name change.

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]
LF02I
MH03I
Positive Impacts
RankActivities, management [code]Pollution (optional) [code]inside/outside [i|o|b]
LG01B

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 [%]
UK010.60
UK040.70

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: GRASSHOLM
Link: https://www.naturalresources.wales/media/674134/Grassholm%20SPA%20Management%20Plan%2021[1].4.08%20(English).pdf

No, but in preparation
No

 

7. MAP OF THE SITE

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Map delivered as PDF in electronic format (optional)
Yes
No

SITE DISPLAY