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

Back to top

1.1 Type

B

1.2 Site code

ES1140004

1.3 Site name

Complexo Ons - O Grove

1.4 First Compilation date

2000-11

1.5 Update date

2019-09

1.6 Respondent:

Name/Organisation:Dirección Xeral de Patrimonio Natural, Consellería de Medio Ambiente, Territorio e Vivenda. Xunta de Galicia
Address:               
Email:dxpn.cmatv@xunta.gal

1.7 Site indication and designation / classification dates

Date site proposed as SCI:1997-12
Date site confirmed as SCI:2004-12
Date site designated as SAC:2014-03
National legal reference of SAC designation:Decreto 37/2014, de 27 de marzo, por el que se declaran zonas especiales de conservación los lugares de importancia comunitaria de Galicia y se aprueba el Plan director de la Red Natura 2000 de Galicia (D.O.G. nº 62, de 31 de marzo de 2014).

2. SITE LOCATION

Back to top

2.1 Site-centre location [decimal degrees]:

Longitude:-8.909900
Latitude:42.382000

2.2 Area [ha]

7606.6400

2.3 Marine area [%]

74.0000

2.4 Sitelength [km]:

0.00

2.5 Administrative region code and name

NUTS level 2 code Region Name
ES11Galicia

2.6 Biogeographical Region(s)

Atlantic (26.00 %) Marine Atlantic (74.00 %)

3. ECOLOGICAL INFORMATION

Back to top

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      2221.63  0.00 
1130  info      910.46  0.00 
1140  info      1340.81  0.00 
1150  info      3.86  0.00 
1160  info      2819.94  0.00 
1170  info      2250.15  0.00 
1210  info      2.27  0.00 
1230  info      164.22  0.00 
1310  info      9.34  0.00 
1320  info      18.04  0.00 
1330  info      95.83  0.00 
1420  info      98.32  0.00 
2110  info      0.5  0.00 
2120  info      38.15  0.00 
2130  info      174.27  0.00 
2230  info      0.5  0.00 
2260  info      1.41  0.00 
3150  info      0.5  0.00 
3260  info      5.71  0.00 
4030  info      473.77  0.00 
6220  info      9.57  0.00 
6410  info      5.51  0.00 
6420  info      12.43  0.00 
6430  info      4.45  0.00 
6510  info      126.94  0.00 
7210  info      1.93  0.00 
8220  info      10.84  0.00 
8230  info      145.18  0.00 
8310  info      4.05  0.00 
8330  info      1.32  0.00 
91E0  info      23.01  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.
F6155Achondrostoma arcasii         
F1103Alosa fallax         
BA054Anas acuta    125  125   
BA056Anas clypeata    290  290   
BA052Anas crecca    820  820   
BA050Anas penelope    420  420   
BA053Anas platyrhynchos    10     
BA053Anas platyrhynchos    1400  1400   
BA051Anas strepera    40  40   
BA228Apus melba    10   
BA028Ardea cinerea    130  130   
BA029Ardea purpurea     
BA149Calidris alpina    5100  5100   
BA147Calidris ferruginea    100     
BA010Calonectris diomedea    50     
BA224Caprimulgus europaeus         
BA137Charadrius hiaticula    170  170   
BA197Chlidonias niger    25     
BA082Circus cyaneus     
I1044Coenagrion mercuriale    grids1x1   
A1194Discoglossus galganoi         
BA026Egretta garzetta    130  130   
BA381Emberiza schoeniclus    15     
BA381Emberiza schoeniclus       
I1065Euphydryas aurinia         
BA098Falco columbarius     
BA103Falco peregrinus       
BA125Fulica atra    50  50   
BA125Fulica atra    15     
BA002Gavia arctica    10   
BA003Gavia immer    10   
BA130Haematopus ostralegus    550  550   
BA014Hydrobates pelagicus         
R1259Lacerta schreiberi         
BA341Lanius senator         
BA459Larus cachinnans    1600     
BA176Larus melanocephalus       
BA157Limosa lapponica    350  350   
BA157Limosa lapponica    150     
BA156Limosa limosa    220  220   
BA246Lullula arborea         
M1355Lutra lutra         
M1324Myotis myotis         
BA160Numenius arquata    415  415   
I1041Oxygastra curtisii    grids1x1   
F1095Petromyzon marinus    300  1560  adults 
BA018Phalacrocorax aristotelis    625  625   
BA017Phalacrocorax carbo    500     
BA391Phalacrocorax carbo sinensis    50     
BA151Philomachus pugnax    11  50   
M1351Phocoena phocoena         
BA274Phoenicurus phoenicurus         
BA034Platalea leucorodia    50     
BA034Platalea leucorodia    70     
BA140Pluvialis apricaria    50     
BA141Pluvialis squatarola    1350  1350   
BA119Porzana porzana               
F5296Pseudochondrostoma duriense         
BA384Puffinus puffinus mauretanicus    500     
BA346Pyrrhocorax pyrrhocorax     
M1304Rhinolophus ferrumequinum         
M1303Rhinolophus hipposideros         
P1441Rumex rupestris     
F1106Salmo salar         
BA195Sterna albifrons    25     
BA193Sterna hirundo    50     
BA191Sterna sandvicensis    100     
BA191Sterna sandvicensis    25     
BA210Streptopelia turtur      200   
BA210Streptopelia turtur    50  70   
BA302Sylvia undata         
BA164Tringa nebularia    75  75   
BA162Tringa totanus    530  530   
M1349Tursiops truncatus         
BA199Uria aalge    40     
  • 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
Alyssum loiseleurii                   
Angelyca pachycarpa                   
Anguis fragilis                   
Armeria pubigera pubigera                   
Asplenium marinum                   
Calendula suffruticosa                   
Chalcides bedriagai                   
Chalcides striatus                   
Cistanche phelypaea                   
Cytisus atlanticus                   
Helichrysum picardii                   
Iberis procumbens procumbens                   
Leucanthemum merinoi                   
Linaria polygalifolia polygalifolia                   
Mibora minima littorea                   
Rumex acetosa biformis                   
Scilla merinoi                   
Triturus boscai                   
  • 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

Back to top

4.1 General site character

Habitat class % Cover
N0172.00
N021.00
N032.00
N044.00
N0810.00
N111.00
N156.00
N171.00
N192.00
N231.00

Total Habitat Cover

100

Other Site Characteristics

El archipiélago de Ons (islas de Ons y Onza) presenta extensas superficies cubiertas por brezal-tojal que incluyen las siguientes comunidades: Daboecion cantabricae, Ulici europaei-Ericetum cinereae, Sileno maritimae-Ulicetum humilis. En la isla de Ons se mantienen áreas con cultivos agrícolas trasdicionales y pequeñas huertas. Gran parte del perímetro del complejo intermareal Umia - O Grove está constituido por una franja de cultivos agrícolas tradicionales, lo que constituye un anillo de protección perimetral. Entre las comunidades vegetales más características se encuentran: Zosteretum marinae, Zosteretum noltii, Cistancho luteae - Suaedetum verae, Iberidetum procumbentis.

4.2 Quality and importance

En las islas de Ons y Onza se localizan importantes colonias de Cormorán Moñudo (Phalacrocorax aristotelis) con 557p y de Gaviota Patiamarilla (Larus cachinnans) con 1.600p. Las aguas que rodean a las islas registran la presencia de grupos de Delfín Mular (Tursiops truncatus) y Marsopa (Phocoena phocoena). En los cantiles se encuentran especies singulares de gran interés botánico, entre las que se incluyen endemismos y otras especies características de estos medios como el helecho Asplenium marinum. En el complejo intermareal Umia - O Grove se encuentran extensas superficies intermareales fango-arenosas bien conservadas, con notable cobertura de fanerógamas marinas (Zostera noltii, Z. marina). Singular sistema dunar de dunas terciarias (istmo de A Lanzada) cubierto en gran parte por la comunidad de Iberidetum procumbentis. Única localidad gallega que alberga Cistanche phelypaea. Durante el período invernal alberga a 13.000 aves acuáticas. Presenta importancia internacional para la invernada y migración de Espátula Común (Platalea leucorodia), e importancia nacional para la invernada de Ostrero Euroasiático (Haematopus ostralegus), Chorlito Gris (Pluvialis squatarola), Correlimos Común (Calidris alpina) y Aguja Colipinta (Limosa lapponica).

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]
LA01i
MC01.07b
ME02.01i
MF01i
MF02.02b
LF02.03i
MG01.01i
Positive Impacts
RankActivities, management [code]Pollution (optional) [code]inside/outside [i|o|b]
HG02.09i
MG03o

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

Back to top

5.1 Designation types at national and regional level:

Code Cover [%]
ES0919.00
ES17100.00

5.2 Relation of the described site with other sites:

Designated at national or regional level:

Type code Site name Type Cover [%]
ES09Illas Atlánticas de Galicia+19.00
ES17Complexo Ons - O Grove=100.00

Designated at international level:

Type Site name Type Cover [%]
ramsarComplejo intermareal Umia - O Grove, punta Carreirón y lagun+35.00

5.3 Site designation (optional)

Refugio de Fauna PO-2, PO-4 y PO-7. Área Importante para las Aves (SEO/BirdLife): IBA 002 Islas Ons. Área Importante para las Aves (SEO/BirdLife): IBA 003 Ría de Arosa (O Grove).

6. SITE MANAGEMENT

Back to top

6.1 Body(ies) responsible for the site management:

Organisation:Dirección Xeral de Patrimonio Natural, Consellería de Medio Ambiente, Territorio e Vivenda. Xunta de Galicia
Address:
Email:dxpn.cmatv@xunta.gal

6.2 Management Plan(s):

An actual management plan does exist:

X
Yes Name: Plan director de la Red Natura 2000 de Galicia
Link: http://www.cmati.xunta.es/seccion-tema/c/Conservacion?content=Direccion_Xeral_Conservacion_Natureza/Espazos_protexidos/seccion.html&sub=Rede_natura_2000/

No, but in preparation
No

6.3 Conservation measures (optional)

Isla de Ons: Plan de Ordenación de los Recursos Naturales (Parque Nacional de las Islas Atlánticas). Plan General de Explotación Marisquera (de carácter anual y publicado por la Consellería de Pesca, Marisqueo e Acuicultura).

 

7. MAP OF THE SITE

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

SITE DISPLAY