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)
| SITE | FR8201637 |
|---|
| SITENAME | Marais de Lavours |
|---|
TABLE OF CONTENTS
1. SITE IDENTIFICATION
Back to top1.1 Type
1.2 Site code
1.3 Site name
1.4 First Compilation date
1.5 Update date
1.6 Respondent:
| Name/Organisation: | Ministère de la Transition écologique - DGALN/DEB/SDET/ET5 |
| Address: |
|
| Email: | en3.en.deb.dgaln@developpement-durable.gouv.fr |
1.7 Site indication and designation / classification dates
| Date site proposed as SCI: | 1999-03 |
| Date site confirmed as SCI: | 2004-12 |
| Date site designated as SAC: | 2008-10 |
| National legal reference of SAC designation: | http://www.legifrance.gouv.fr/jo_pdf.do?cidTexte=JORFTEXT000019826006 |
2. SITE LOCATION
Back to top2.1 Site-centre location [decimal degrees]:
| Longitude: | 5.759720 |
| Latitude: | 45.837220 |
2.2 Area [ha]
2.3 Marine area [%]
No information provided
2.4 Sitelength [km] (optional):
No information provided
2.5 Administrative region code and name
|
NUTS level 2 code
|
Region Name
|
|---|
| FR71 | Rhône-Alpes |
2.6 Biogeographical Region(s)
3. ECOLOGICAL INFORMATION
Back to top3.1 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
|
|---|
| | | | | | | Representativity | Relative Surface | Conservation | Global |
|---|
3130
|
|
| 2
| 0.00
| G
| A
| C
| B
| B
|
| 3140
|
|
| 0.1
| 0.00
| G
| A
| C
| A
| A
|
| 3150
|
|
| 8.46
| 0.00
| G
| A
| C
| B
| B
|
| 3160
|
|
| 0.2
| 0.00
| G
| A
| C
| A
| A
|
| 3260
|
|
| 0.2
| 0.00
| G
| A
| C
| B
| B
|
| 6410
|
|
| 105.75
| 0.00
| G
| A
| C
| B
| B
|
| 6510
|
|
| 42.3
| 0.00
|
| A
| C
| A
| A
|
| 7150
|
|
| 0.5
| 0.00
| G
| B
| C
| C
| C
|
| 7210
|
X
|
| 63.45
| 0.00
| G
| A
| C
| A
| A
|
| 7230
|
|
| 105.75
| 0.00
| G
| A
| C
| B
| A
|
| 9160
|
|
| 24.5
| 0.00
| G
| A
| C
| A
| A
|
| 91E0
|
X
|
| 42.3
| 0.00
| G
| A
| C
| A
| A
|
| 91F0
|
|
| 4.23
| 0.00
|
| A
| C
| B
| B
|
- 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
- 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)
- 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 top4.1 General site character
|
Habitat class
|
% Cover
|
|---|
| N06 | 2.00 |
| N07 | 63.00 |
| N10 | 25.00 |
| N16 | 10.00 |
Total Habitat Cover | 100 |
|---|
Other Site Characteristics
| Du point de vue phytogéographique, il s'agit d'un bas-marais alcalin représentatif du rebord occidental des Alpes et de l'avant-pays alpin.
- Tendance à la banalisation de la flore des habitats herbacés du marais
* par envahissement des ligneux suite à l'abandon des pratiques traditionnelles de fauche et pâturage ;
* par abaissement du niveau de la nappe lié à la présence de nombreux fossés drainants et aux divers aménagements sur le Rhône.
- Les surfaces des habitats humides tendent à régresser face à l'extension de la populiculture et de la monoculture de maïs. |
4.2 Quality and importance
| Le marais de Lavours a longtemps été exploité pour sa tourbe et son argile. L'élevage a été cependant l'activité essentielle du marais depuis le Moyen-Age. A partir de la révolution, ce droit de pâture codifié par les communes interdisait l'accès du marais au bétail d'avril à août, afin de permettre la fauche des prairies.
Suite à l'apparition de divers gradients, liés à la durée des crues et à la nature du sol (tourbeux au centre, argileux à l'est et à l'ouest), il existe dans ce marais de nombreux biotopes.
Bien que devant toujours être considéré comme partie intégrante de la plaine alluviale du Rhône et de sa dynamique fluviale, le marais de Lavours n'est plus inondé directement par le Rhône comme il l'était jusqu'au XIXème siècle. Les endiguements fluviaux ont diminué la durée et la fréquence des périodes de submersion et modifié les oscillations de la nappe phréatique. Cependant, le maintien d'un niveau de nappe élevé avait pérennisé les communautés palustres.
La mise en service des centrales hydroélectriques ainsi que les travaux de draînage agricole ont induit l'enfoncement de la nappe phréatique. Depuis les années 70, plus du tiers du marais a disparu au profit des cultures intensives de maïs et des boisements monospécifîques de peupliers.
Les secteurs restés en marais subissent les conséquences couplées des modifications hydrologiques et de l'abandon des pratiques traditionnelles de pâture extensive et de fauche : ils s'assèchent progressivement et sont colonisés par les aulnes et les saules. |
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 |
|---|
| Rank | Threats and pressures [code] | Pollution (optional) [code] | inside/outside [i|o|b] |
|---|
| H | A01 | | o |
| M | A04.03 | | o |
| H | J02.06 | | o |
| Positive Impacts |
|---|
| Rank | Activities, management [code] | Pollution (optional) [code] | inside/outside [i|o|b] |
|---|
| M | A03 | | i |
| L | A04 | | i |
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
4.4 Ownership (optional)
| Type | [%] |
|---|
| Public | National/Federal | 0 |
| State/Province | 0 |
| Local/Municipal | 0 |
| Any Public | 0 |
| Joint or Co-Ownership | 0 |
| Private | 0 |
| Unknown | 0 |
| sum | 74.6 |
4.5 Documentation (optional)
No information provided
5. SITE PROTECTION STATUS
Back to top5.1 Designation types at national and regional level (optional):
|
Code
|
Cover [%]
|
|---|
| FR03 | 100.00 |
5.2 Relation of the described site with other sites (optional):
Designated at national or regional level:
|
Type code
|
Site name
|
Type
|
Cover [%]
|
|---|
| FR03 | Marais de Lavours | = | 100.00 |
5.3 Site designation (optional)
| MESURES INCITATIVES, CONVENTIONNELLES,...
- Un plan de gestion est déjà en place dans la réserve (pâturage, fauche, débroussaillage).
MESURES REGLEMENTAIRES
- Une réglementation des activités humaines est en place sur la réserve naturelle nationale du ma |
6. SITE MANAGEMENT
Back to top6.1 Body(ies) responsible for the site management:
| Organisation: | E.I.D. (Entente interdépartementale Rhône-Alpes pour la démoustication) |
| Address: | |
| Email: | contact@reserve-lavours.com |
6.2 Management Plan(s):
An actual management plan does exist:
|
Yes
| |
| No, but in preparation |
X | No |
6.3 Conservation measures (optional)
| Document d'objectifs approuvé en mars 1998 (réalisation Conservatoire du Patrimoine Naturel de Savoie - Le Prieuré B.P. 51 - 73372 Le Bourget du Lac)
Plan de gestion 2001 - 2005 de la réserve naturelle nationale du Marais de Lavours (2ème plan de gesti |
7. MAP OF THE SITE
Back to top
No information provided
SITE DISPLAY