Conservation status of the Natura 2000 amphibians for the Belgian Atlantic region

(1)

Report on the main results of the surveillance under article

11 for annex II, IV and V species (Annex B)

SPECIES NAME: Alytes obstetricans

1. National level

Biogeographic regions and/or marine regions concerned in the MS: ATL CON

2. Biogeographical or marine level

2.1 Biogeographical region or marine region: Atlantic

Bauwens D. (2008) Conservation status of the Natura 2000 species Midwife Toad (Alytes obstetricans) for the Belgian Atlantic region, In: Paelinckx D., Van Landuyt W. & De Bruyn L. (ed.). Conservation status of the Natura 2000 habitats and species. Report of the Research Institute for Nature and Forest,

INBO.R.2008.15. Brussels. In prep

2.2 Published sources and/or websites www.inbo.be/natura2000be

2.3 Range of species in the biogeographic region or marine region

2.3.1 Surface range of the species in km2 3875

2.3.2 Date of range determination 2000-2006

2.3.3 Quality of data concerning range Good e.g based on extensive surveys

(2)

2.3.5 Range trend magnitude (km2) - optional N/A

2.3.6 Range trend period 1970-2006

2.3.7 Reasons for reported trend Unknown

Other (specify) N/A

2.4 Population of the species in the biogeographic region or marine region

2.4.1 Population size estimation

Minimum population Maximum population Population units

83 83 Grids

2.4.2 Date of population estimation 2000-2006

2.4.3 Method used for population estimation From comprehensive inventory

2.4.4 Quality of population data Good e.g based on extensive surveys

2.4.5 Population trend Stable (=)

2.4.6 Population trend magnitude N/A

2.4.7 Population trend period 1970-2006

Other (specify) N/A

2.4.9 Justification of % thresholds for trends

(optional) N/A

2.4.10 Main pressures 160 General Forestry management

800 Landfill, land reclamation and drying out, general

2.4.11 Threats 160 General Forestry management

800 Landfill, land reclamation and drying out, general

2.5 Habitat for the species in the biogeographic region or marine region

2.5.1 Habitats for the species N/A

2.5.2 Area estimation (km2) N/A

2.5.3 Date of estimation 2006

2.5.4 Quality of the data Poor e.g. based on very incomplete data or on expert judgement

2.5.5 Trend of the habitat Unknown (X)

2.5.6 Trend period 2000-2006

Other (specify) N/A

2.6 Future prospects for the species Good prospects - species expected to survive and prosper

2.7 Complementary information

2.7.1 Favourable reference range (km2) 3875

2.7.2 Favourable reference population 83

2.7.3 Suitable habitat for the species N/A

2.7.4 Other relevant information N/A

Conclusion

Biogeographical or

marine level

Conclusions within Natura

2000 sites (optional)

(2.3) Range Favourable (FV) N/A

(2.4) Population Favourable (FV) N/A

(2.5) Habitat for the species Unknown (XX) N/A

(2.6) Future prospects Favourable (FV) N/A

(3)

Report on the main results of the surveillance under article

11 for annex II, IV and V species (Annex B)

SPECIES NAME: Bufo calamita

1. National level

2. Biogeographical or marine level

2.1 Biogeographical region or marine region: Atlantic

Bauwens D. (2008) Conservation status of the Natura 2000 species Bufo calamita (Bufo calamita) for the Belgian Atlantic region, In: Paelinckx D., Van Landuyt W. & De Bruyn L. (ed.). Conservation status of the Natura 2000 habitats and species. Report of the Research Institute for Nature and Forest,

2.3 Range of species in the biogeographic region or marine region

2.3.1 Surface range of the species in

km2 6025

(4)

2.3.5 Range trend magnitude (km2) -

optional N/A

Other (specify) N/A

2.4 Population of the species in the biogeographic region or marine region

94 94 Grids

2.4.3 Method used for population

estimation From comprehensive inventory

Other (specify) N/A

2.4.9 Justification of % thresholds for

trends (optional) N/A

2.4.10 Main pressures 701 - water pollution

810 Drainage

850 Modification of hydrographic functioning, general 952 - eutrophication

953 - acidification

2.4.11 Threats 701 - water pollution

810 Drainage

953 - acidification

2.5 Habitat for the species in the biogeographic region or marine region

2.5.6 Trend period 2006

Other (specify) N/A

2.7 Complementary information

2.7.1 Favourable reference range

(km2) 6025

(5)

marine level

Natura 2000 sites

(optional)

(6)

Report on the main results of the surveillance under article

11 for annex II, IV and V species (Annex B)

SPECIES NAME: Hyla arborea

1. National level

Biogeographic regions and/or marine regions concerned in the MS: ATL

2. Biogeographical or marine level

2.1 Biogeographical region or marine region: Atlantic

Bauwens D. (2008) Conservation status of the Natura 2000 species European Tree Frog (Hyla arborea) for the Belgian Atlantic region, In: Paelinckx D., Van Landuyt W. & De Bruyn L. (ed.). Conservation status of the Natura 2000 habitats and species. Report of the Research Institute for Nature and Forest,

2.3 Range of species in the biogeographic region or marine region

km2 875

(7)

optional N/A

2.3.7 Reasons for reported trend Direct human influence (restoration, deterioration, destruction)

Other (specify) N/A

2.4 Population of the species in the biogeographic region or marine region

9 9 Grids

2.4.5 Population trend Decreasing (-)

2.4.6 Population trend magnitude 60

Other (specify) N/A

2.4.10 Main pressures 150 Restructuring agricultural land holding

151 - removal of hedges and copses 701 - water pollution

803 - infilling of ditches, dykes, ponds, pools, marshes or pits 853 - management of water levels

990 Other natural processes

2.4.11 Threats 150 Restructuring agricultural land holding

2.5 Habitat for the species in the biogeographic region or marine region

2.5.6 Trend period 2000-2006

Other (specify) N/A

2.6 Future prospects for the species Bad prospects - species likely to be become extinct in the biogeographical region

2.7 Complementary information

(km2) 875

2.7.2 Favourable reference population Much more than field 2.4.1 9

(8)

Conclusion

Biogeographical or

marine level

Conclusions within

Natura 2000 sites

(optional)

(2.3) Range Bad (U2) N/A

(2.4) Population Bad (U2) N/A

(2.6) Future prospects Bad (U2) N/A

(9)

Report on the main results of the surveillance under article

11 for annex II, IV and V species (Annex B)

SPECIES NAME: Pelobates fuscus

1. National level

2. Biogeographical or marine level

2.1 Biogeographical region or marine region: Atlantic

Bauwens D. (2008) Conservation status of the Natura 2000 species Common Spadefoot (Pelobates

fuscus) for the Belgian Atlantic region, In: Paelinckx D., Van Landuyt W. & De Bruyn L. (ed.). Conservation status of the Natura 2000 habitats and species. Report of the Research Institute for Nature and Forest, INBO.R.2008.15. Brussels. In prep

2.3 Range of species in the biogeographic region or marine region

km2 400

(10)

optional N/A

habitat destruction

Other (specify) habitat destruction

2.4 Population of the species in the biogeographic region or marine region

6 6 Grids

habitat destruction

Other (specify) habitat destruction

2.5 Habitat for the species in the biogeographic region or marine region

2.5.1 Habitats for the species Migrates between aquatic habitats where it reproduces in early

spring, and terrestrial biotopes where it spends the rest of the year. It inhabits areas where mesotrophic waters are found close (distance typically < 500 m) to terrains with a loose, sandy substrate. Aquatic habitats are meadow ponds, old meanders, small lakes and enriched fens, containing water with a pH > 6. The main terrestrial habitats are land dunes, sandy hills and sandy agricultural fields, where it spends the daytime buried in the soil.

2.5.6 Trend period 1995-2006

(11)

Other (specify) N/A

2.7 Complementary information

(km2) 400

Conclusion

Biogeographical or

marine level

Conclusions within

Natura 2000 sites

(optional)

(12)

Report on the main results of the surveillance under article

11 for annex II, IV and V species (Annex B)

SPECIES NAME: Rana arvalis

1. National level

2. Biogeographical or marine level

2.1 Biogeographical region or marine region: Atlantic

Bauwens D. (2008) Conservation status of the Natura 2000 species Moor Frog (Rana arvalis) for the Belgian Atlantic region, In: Paelinckx D., Van Landuyt W. & De Bruyn L. (ed.). Conservation status of the Natura 2000 habitats and species. Report of the Research Institute for Nature and Forest,

2.3 Range of species in the biogeographic region or marine region

km2 1700

(13)

optional 0

Other (specify) N/A

2.4 Population of the species in the biogeographic region or marine region

34 34 Grids

Other (specify) N/A

810 Drainage

953 - acidification

810 Drainage

953 - acidification

2.5 Habitat for the species in the biogeographic region or marine region

2.5.1 Habitats for the species In Belgium, this species is strictly confined to wet heathlands and moors. It breeds in shallow parts of (enriched) fens. The

terrestrial habitats are heathlands and forest edges. Migrates between aquatic habitats where it reproduces during spring, and terrestrial biotopes where it spends summer and winter. Distances between both habitat types are typically < 1 km.

2.5.6 Trend period 1995-2006

Other (specify) N/A

2.7 Complementary information

(km2) 1700

(14)

Conclusion

Biogeographical or

marine level

Conclusions within

Natura 2000 sites

(optional)

(15)

Report on the main results of the surveillance under article

11 for annex II, IV and V species (Annex B)

SPECIES NAME: Rana esculenta

1. National level

2. Biogeographical or marine level

2.1 Biogeographical region or marine region: Atlantic

Bauwens D. (2008) Conservation status of the Natura 2000 species Edible Frog - Green frog - Common water frog (Rana esculenta) for the Belgian Atlantic region, In: Paelinckx D., Van Landuyt W. & De Bruyn L. (ed.). Conservation status of the Natura 2000 habitats and species. Report of the Research Institute for Nature and Forest, INBO.R.2008.15. Brussels. In prep

2.3 Range of species in the biogeographic region or marine region

km2 18829

(16)

optional 0

Other (specify) N/A

2.4 Population of the species in the biogeographic region or marine region

585 585 Grids

Other (specify) N/A

810 Drainage

953 – acidification

810 Drainage

953 - acidification

2.5 Habitat for the species in the biogeographic region or marine region

2.5.1 Habitats for the species Spends the entire activity season in or in the immediate

neighbourhood of its aquatic habitat. It is found in a large variety of waters including ditches, canals, ponds, lakes, sand and clay quarries, old meanders, fens, etc.

2.5.6 Trend period 1995-2006

Other (specify) N/A

2.7 Complementary information

(km2) 18829

(17)

2.7.4 Other relevant information Given the practical difficulties to distinguishR.esculenta from R.lessonae and R. ridibunda, these three species by external characteristics, they are treated here as a single species “synklepton”

Conclusion

Biogeographical or

marine level

Conclusions within

Natura 2000 sites

(optional)

(18)

Report on the main results of the surveillance under article

11 for annex II, IV and V species (Annex B)

SPECIES NAME: Rana lessonae

1. National level

2. Biogeographical or marine level

2.1 Biogeographical region or marine region: Atlantic

Bauwens D. (2008) Conservation status of the Natura 2000 species Pool frog (Rana lessonae) for the Belgian Atlantic region, In: Paelinckx D., Van Landuyt W. & De Bruyn L. (ed.). Conservation status of the Natura 2000 habitats and species. Report of the Research Institute for Nature and Forest, INBO.R.2008.15. Brussels. In prep

2.2 Published sources and/or websites Jacob et al. 2007. Les batraciens et reptiles de Wallonie.

Raînne (Aves) & CRNFB, série Faune-Flore-Habitats n°2, Gembloux, 350 pp.

Parent G-H., 1984. Atlas des Batraciens et Reptiles de la Belgique et des Régions limitrophes. Cahiers d'Ethologie appliquée, 4: 1-198.

Parent G-H., 1983. Animaux menacés en Wallonie: protégeons nos batraciens et reptiles. Duculot, Gembloux: 172 pp.

(19)

amprep/grenouilles_vertes.html www.inbo.be/natura2000be

2.3 Range of species in the biogeographic region or marine region

2.3.1 Surface range of the species in km2 4207

2.3.3 Quality of data concerning range Moderate e.g. based on partial data with some

extrapolation

2.3.4 Range trend Unknown (X)

2.3.5 Range trend magnitude (km2) - optional N/A

Other (specify) N/A

2.4 Population of the species in the biogeographic region or marine region

62 62 Grids

2.4.3 Methods used for population estimation From comprehensive inventory

2.4.4 Quality of population data Moderate e.g. based on partial data with some

extrapolation

2.4.5 Population trend Unknown (X)

Other (specify) N/A

2.4.9 Justification of % thresholds for trends

(optional) N/A

810 Drainage

953 - acidification

810 Drainage

953 - acidification

2.5 Habitat for the species in the biogeographic region or marine region

neighbourhood of its aquatic habitat. In the Atlantic region of Belgium, this species shows a clear preference for ponds and fens in or near to heathlands and moors.

2.5.4 Quality of the data Poor e.g. based on very incomplete data or on expert

judgement

(20)

Other (specify) N/A

2.6 Future prospects for the species Unknown

2.7 Complementary information

2.7.1 Favourable reference range (km2) More than field 2.3.1 4207

2.7.2 Favourable reference population N/A

2.7.3 Suitable habitat for the species (km2) N/A

2.7.4 Other relevant information data are likely to be incomplete, given the practical

difficulties to distinguish this species by external characteristics from Rana esculenta

Conclusion

Biogeographical

or marine level

Conclusions within Natura

2000 sites (optional)

(2.3) Range Unknown (XX) N/A

(2.4) Population Unknown (XX) N/A

(2.6) Future prospects Unknown (XX) N/A

(21)

Report on the main results of the surveillance under article

11 for annex II, IV and V species (Annex B)

SPECIES NAME: Rana ridibunda

1. National level

2. Biogeographical or marine level

2.1 Biogeographical region or marine region: Atlantic

Bauwens D. (2008) Conservation status of the Natura 2000 species Marsh Frog (Rana ridibunda) for the Belgian Atlantic region, In: Paelinckx D., Van Landuyt W. & De Bruyn L. (ed.). Conservation status of the Natura 2000 habitats and species. Report of the Research Institute for Nature and Forest,

2.3 Range of species in the biogeographic region or marine region

km2 0

2.3.3 Quality of data concerning range Poor e.g. based on very incomplete data or on expert judgement

(22)

optional N/A

Other (specify) N/A

2.4 Population of the species in the biogeographic region or marine region

0 Grids

estimation Based on expert opinion

2.4.4 Quality of population data Poor e.g. based on very incomplete data or on expert judgement

2.4.5 Population trend Unknown (X)

Other (specify) N/A

810 Drainage

953 - acidification

810 Drainage

850 Modification of hydrographic functioning, general 852 - modifying structures of inland water courses 853 - management of water levels

2.5 Habitat for the species in the biogeographic region or marine region

neighbourhood of its aquatic habitat. It is found in a large variety of waters including ditches, canals, ponds, lakes, sand and clay quarries, old meanders, fens, etc.

2.5.6 Trend period 1995-2006

Other (specify) N/A

2.6 Future prospects for the species Unknown

2.7 Complementary information

(km2) Much more than field 2.3.1 0

(23)

2.7.4 Other relevant information Given the practical difficulties to distinguish this species from Rana esculenta by external characteristics data are inadequate

Conclusion

Biogeographical or

marine level

Conclusions within

Natura 2000 sites

(optional)

(2.3) Range Unknown (XX) N/A

(2.4) Population Unknown (XX) N/A

(2.6) Future prospects Unknown (XX) N/A

(24)

Report on the main results of the surveillance under article

11 for annex II, IV and V species (Annex B)

SPECIES NAME: Rana temporaria

1. National level

2. Biogeographical or marine level

2.1 Biogeographical region or marine region: Atlantic

Bauwens D. (2008) Conservation status of the Natura 2000 species Common frog (Rana temporaria) for the Belgian Atlantic region, In: Paelinckx D., Van Landuyt W. & De Bruyn L. (ed.). Conservation status of the Natura 2000 habitats and species. Report of the Research Institute for Nature and Forest,

2.2 Published sources and/or websites

Jacob et al. 2007. Les batraciens et reptiles de Wallonie. Raînne (Aves) & CRNFB, série Faune-Flore-Habitats n°2, Gembloux, 350 pp. Parent G-H., 1984. Atlas des Batraciens et Reptiles de la Belgique et des Régions limitrophes. Cahiers d'Ethologie appliquée, 4: 1-198. Parent G-H., 1983. Animaux menacés en Wallonie: protégeons nos batraciens et reptiles. Duculot, Gembloux: 172 pp.

(25)

2.3 Range of species in the biogeographic region or marine region

2.3.1 Surface range of the species

in km2 18829

2.3.3 Quality of data concerning

range Good e.g based on extensive surveys

2.3.4 Range trend Stable (=)

2.3.5 Range trend magnitude

(km2) - optional 0

Other (specify) N/A

2.4 Population of the species in the biogeographic region or marine region

713 713 Grids

Other (specify) N/A

2.4.9 Justification of % thresholds

for trends (optional) N/A

810 Drainage

953 - acidification

810 Drainage

953 - acidification

2.5 Habitat for the species in the biogeographic region or marine region

2.5.1 Habitats for the species Migrates between aquatic habitats where it reproduces during early spring, and terrestrial biotopes where it spends the rest of the year. Distances between both habitat types are typically < 1 km. Aquatic habitats are very diverse and include permanent ponds, lakes, ditches, fens, as well as temporarily inundated grasslands. The species lays its eggs in shallow sites that are well lit by the sun. Terrestrial habitats are also highly diverse: grasslands, wet

heathlands, marshes, scrubland, different types of woodland, parks and gardens in residential areas.

(26)

2.5.6 Trend period 1995-2006

Other (specify) N/A

2.6 Future prospects for the

species Good prospects - species expected to survive and prosper

2.7 Complementary information

(km2) 18829

2.7.2 Favourable reference

population 713

2.7.3 Suitable habitat for the

species N/A

Conclusion

Biogeographical or

marine level

Conclusions within Natura

2000 sites (optional)

(27)

Report on the main results of the surveillance under article

11 for annex II, IV and V species (Annex B)

SPECIES NAME: Triturus cristatus

1. National level

2. Biogeographical or marine level

2.1 Biogeographical region or marine region: Atlantic

Bauwens D. (2008) Conservation status of the Natura 2000 species Crested Newt (Triturus cristatus) for the Belgian Atlantic region, In: Paelinckx D., Van Landuyt W. & De Bruyn L. (ed.). Conservation status of the Natura 2000 habitats and species. Report of the Research Institute for Nature and Forest,

2.3 Range of species in the biogeographic region or marine region

km2 11852

(28)

optional N/A

Other (specify) N/A

2.4 Population of the species in the biogeographic region or marine region

157 157 Grids

Other (specify) N/A

2.5 Habitat for the species in the biogeographic region or marine region

2.5.1 Habitats for the species Migrates between aquatic habitats where it reproduces during

spring and early summer, and terrestrial biotopes where it spends summer and winter. Distances between both habitat types are typically < 1 km. Aquatic habitats are typically small to medium-sized ponds in agricultural landscapes, they are used as breeding sites by adults and are the critical habitat for eggs and larvae. Main requirements are that water level is high throughout summer, neutral pH, exposed to sunshine. The species has a preference for clusters of small ponds. Terrestrial habitats include a wide variety of woods, scrubland, heathlands, marshes and small-scaled farmland with abundant hedges and hedgerows.

2.5.6 Trend period 1995-2006

(29)

2.7 Complementary information

(km2) 16848