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

NL1000007

1.3 Site name

Ilperveld, Varkensland, Oostzanerveld & Twiske

1.4 First Compilation date

1998-08

1.5 Update date

2013-09

1.6 Respondent:

Name/Organisation:Ministry of Agriculture, Nature and Food Quality - Department Nature & Biodiversity
Address:               
Email:

1.7 Site indication and designation / classification dates

Date site classified as SPA:2000-03
National legal reference of SPA designationhttp://www.synbiosys.alterra.nl/natura2000/documenten/gebieden/092/N2K092_DB%20HVN%20Ilperveld,%20Varkensland,%20Oostzanerveld%20&%20Twiske.pdf
Explanation(s):Formerly known as SPA NL1000007 Ilperveld, Varkensland en Twiske

2. SITE LOCATION

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2.1 Site-centre location [decimal degrees]:

Longitude:4.887500
Latitude:52.457100

2.2 Area [ha]

2233.0000

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
NL32Noord-Holland

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.
BA295Acrocephalus schoenobaenus    800  800     
BA056Anas clypeata    50  50     
BA050Anas penelope    6400  6400     
BA051Anas strepera    200  200     
BA043Anser anser    90  90     
BA021Botaurus stellaris    17  17     
BA081Circus aeruginosus    15  15     
BA125Fulica atra    710  710     
BA153Gallinago gallinago       
BA156Limosa limosa    790  790     
BA292Locustella luscinioides    36  36     
BA151Philomachus pugnax       
BA193Sterna hirundo    180  180     
  • 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
N0615.00
N0715.00
N1055.00
N1410.00
N165.00

Total Habitat Cover

100

Other Site Characteristics

A polder complex comprising pools, numerous ditches with reed fringes, marshland, wet meadows, improved grassland and a recreational area (Twiske). The site is located to the north of the city of Amsterdam

4.2 Quality and importance

The following data refer to the period 1993-1997 (data in paragraph 3.2a-b refer te period 1999-2003). Species meeting the 1% threshold (non-breeding): Eurasian Wigeon Anas [Mareca] penelope (1%), Gadwall Anas strepera (1%), Black-tailed Godwit Limosa limosa (1%). One of the five most important sites for (breeding): Great Bittern Botaurus stellaris. xxx Site largely overlaps with IBA071 (IBA2000) xxx  xxx Quaking bogs, fresh water birds, foraging area for Platalea leucorodia.

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]
LG01i
Positive Impacts
RankActivities, management [code]Pollution (optional) [code]inside/outside [i|o|b]
MUb

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

Tempel Rvanden Osieck ER. 1994., Areas important for birds in the Netherlands., Techn Rapport Vogelbescherming 13E, Vogelbescherming Nederland, Zeist --- Siffels JW ea. 1998., Vogels kijken in de Zaanstreek., Vogelbeschermingswacht Zaanstreek, Zaandam --- Dillen Bvan ea. 1999., Het Twiske van maand tot maand., IVN afd. Twiske, Landsmeer --- Roomen Mvan Boele A Weide Mvander Winden Evan ea. 2000., Belangrijke vogelgebieden in Nederland 1993-97. Actueel overzicht van, Europese vogelwaarden in aangewezen en aan te wijzen speciale, beschermingszones en andere belangrijke gebieden., SOVON Informatierapport 2000/01 SOVON, Beek-Ubbergen --- Hut RMGvander. 2000., Moerasvogels en beheer: het effect van rietmaaien en waterpeilbeheer., Graspieper ~20 ~90-100 --- Stuart J. 2001., Natuurgebieden in Noord-Holland. Deel 2: Het Ilperveld., Graspieper 21: 73-79 --- Hut RMGvander. 1999., Broedvogels van de Twiskepolder. Bestandsontwikkeling, betekenis en, beheersaspecten., Eigen uitgave, Zaandam --- Hut RMGvander. 2001., Broedvogels van de Twiskepolder in 2000., Eigen uitgave, Zaandam; SOVON & CBS (2006) Trends van vogels in het Nederlandse Natura 2000 netwerk. SOVON Vogelonderzoek Nederland, Beek-Ubbergen

5. SITE PROTECTION STATUS

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5.1 Designation types at national and regional level:

Code Cover [%]
NL01100.00

6. SITE MANAGEMENT

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6.1 Body(ies) responsible for the site management:

Organisation:Provincie Noord-Holland
Address:
Email:

6.2 Management Plan(s):

An actual management plan does exist:

X
Yes Name: Natura 2000 Beheerplan Ilperveld, Varkensland, Oostzanerveld & Twiske 2016-2020
Link: https://www.noord-holland.nl/Onderwerpen/Natuur/Natura_2000/Natura_2000_beheerplannen/Beheerplannen/Laag_Holland/Vastgesteld_Natura_2000_beheerplan_Ilperveld_Varkensland_Oostzanerveld_Twiske.org

No, but in preparation
No

 

7. MAP OF THE SITE

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

SITE DISPLAY