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FOUR PARTS FOUR PARTS

FOUR PARTS - PowerPoint Presentation

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FOUR PARTS - PPT Presentation

Part 1 Habitat Directive Annex 1 habitat types Part 2 Habitat Directive Annex 2 marine mammals Part 3 Habitat Directive Annex 2 nonmarine mammals Part 4 Integration ID: 394733

directive habitat areas delineating habitat directive delineating areas annex bpns ha1110 marine types biotope mammals area van sandbanks species

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Slide1

FOUR PARTS Part 1: Habitat Directive, Annex 1: habitat types Part 2: Habitat Directive, Annex 2: marine mammals Part 3: Habitat Directive, Annex 2: non-marine mammals Part 4: Integration

DELINEATING HABITAT DIRECTIVE AREAS IN THE BPNS

REPORTDegraer, S., U. Braeckman, J. Haelters, K. Hostens, T. Jacques, F. Kerckhof, B. Merckx, M. Rabaut, E. Stienen, G. Van Hoey, V. Van Lancker & M. Vincx (2009). Studie betreffende het opstellen van een lijst van potentiële Habitatrichtlijngebieden in het Belgische deel van de Noordzee. Final report by order of FSP Environment, Marine Environment. 93 pp.

20 to 60 % important habitat

assigned

as N2000 areaSlide2

Habitat types Annex I, HA1110

RATIONALE

HA1110 = structurally and functionally coherent unit of sandbank tops and associated gullies

Delineating

24

sandbanks

based on DTM and BPI (= basic building blocks)

Differentiation 4 biotopes:Habitat suitabilityBiological valueSurface area

Differentiation sandbanks:(per biotope)Biological valueDensity macrobenthosNumber of biotopesShare in surface area

Scenario testingPreferential & additional biotope4 scenario’s

DELINEATING HABITAT DIRECTIVE AREAS IN THE BPNSSlide3

24

sandbanks

Habitat types Annex I, HA1110DELINEATING HABITAT DIRECTIVE AREAS IN THE BPNSSlide4

Habitat types Annex I, HA1110

RATIONALE

HA1110 = structurally and functionally coherent unit of sandbank tops and associated gullies

Delineating

24

sandbanks

based on DTM and BPI (= basic building blocks)

Differentiation 4 biotopes:Habitat suitabilityBiological valueSurface area

Differentiation sandbanks:(per biotope)Biological valueDensity macrobenthosNumber of biotopesShare in surface area

Scenario testingPreferential & additional biotope4 scenario’s

DELINEATING HABITAT DIRECTIVE AREAS IN THE BPNSSlide5

Macoma balthicacommunity

Abra alba

community

Nephtys cirrosa

community

Ophelia limacina

community

Increasing sediment mud content

Increasing

(

median) grain size

Degraer et al., 2003

Van Hoey et al., 2004

Habitat types

Annex

I,

HA1110 – 4 biotopes

DELINEATING HABITAT DIRECTIVE AREAS IN THE BPNSSlide6

Habitat types

Annex I, HA1110 – 4 biotopes

DELINEATING HABITAT DIRECTIVE AREAS IN THE BPNSMacrobenthic densitySpecies richness

Abra

alba

biotope

Abra

alba

biotopeCoastal and near coastal areaSlide7

Habitat types Annex I, HA1110

RATIONALE

HA1110 = structurally and functionally coherent unit of sandbank tops and associated gullies

Delineating

24

sandbanks

based on DTM and BPI (= basic building blocks)

Differentiation 4 biotopes:Habitat suitabilityBiological valueSurface area

Differentiation sandbanks:(per biotope)Biological valueDensity macrobenthosNumber of biotopesShare in surface area

Scenario testingPreferential & additional biotope4 scenario’s

DELINEATING HABITAT DIRECTIVE AREAS IN THE BPNSSlide8

24

sandbanksX4 biotopes

Habitat types Annex

I,

HA1110 – 4 biotopes

DELINEATING HABITAT DIRECTIVE AREAS IN THE BPNS

Abra

alba

biotope

Ranking

of sandbanksSlide9

Habitat types Annex I, HA1110

RATIONALE

HA1110 = structurally and functionally coherent unit of sandbank tops and associated gullies

Delineating

24

sandbanks

based on DTM and BPI (= basic building blocks)

Differentiation 4 biotopes:Habitat suitabilityBiological valueSurface area

Differentiation sandbanks:(per biotope)Biological valueDensity macrobenthosNumber of biotopesShare in surface area

Scenario testingPreferential & additional biotope4 scenario’s

DELINEATING HABITAT DIRECTIVE AREAS IN THE BPNSSlide10

Scenario 1

5%

preferential biotopeScenario 210% preferential biotope

Scenario 3

15%

preferential

biotope

Scenario 4

40%

preferential biotope

DELINEATING HABITAT DIRECTIVE AREAS IN THE BPNS

Habitat types Annex I, HA1110Slide11

RATIONALEEcological importance ?

Two candidates HA1170Lanice conchilega aggregationsGravel

bedsActual threats?Bottom disturbing activities

HD as instrument for protection?

HA1170

HA1170

associated

with HA1110

« special feature » under HA1110

Lanice conchilega aggregationsMaxEntAggregations: min. 500 ind./m²Gravel bedsMaximum data exploration

Min. 20% gravel; > 2 mm

DELINEATING HABITAT DIRECTIVE AREAS IN THE BPNS

Habitat types

Annex

I,

HA1110 (

HA1170

)Slide12

Lanice

conchilega

aggregations

(~

Abra alba

biotope)

Gravel

bedsDELINEATING HABITAT DIRECTIVE AREAS IN THE BPNS

Habitat types Annex I, HA1110 (HA1170)Slide13

RATIONALEPotential target species in BDNZBottlenose

dolphinHarbour porpoiseCommon sealGrey seal

Available dataData RBINSData INBOMapping

At

species

level

Evaluation

Population size

Conservation statusInternational importance

DELINEATING HABITAT DIRECTIVE AREAS IN THE BPNS

Species

Annex II, marine mammalsSlide14

Harbour

porpoise(March-April)

April 2008: 2700 ind. (~ 2% NS population)Extinct

Bottlenose

dolphin

(

Recent

observations)

DELINEATING HABITAT DIRECTIVE AREAS IN THE BPNS

Species Annex II, marine mammalsSlide15

Common seal

Grey seal:

Only anecdotic observationsDELINEATING HABITAT DIRECTIVE AREAS IN THE BPNS

Species

Annex

II, marine

mammals

CONCLUSION MARINE MAMMALS

None of the Annex II species allow identifying areas of community importance (cf. internationally low numbers and/or no concentration areas).Slide16

Potential target species in BPNSSea lamprey, River lamprey, Sturgeon, Twait shad, shad, Houting, Salmon

Loggerhead sea turtle, Green sea turtle

RATIONALEEvaluation potential target species

Sea

lamprey

, River

lamprey

, Sturgeon, Twait shad, Shad

Available dataData ILVO(Data RBINS, Data Natuurpunt)

EvaluationPopulation sizeConservation statusRelative importance BPNS

DELINEATING HABITAT DIRECTIVE AREAS IN THE BPNS

Species

Annex II, non-marine mammalsSlide17

Twait

shadRiver lampreyDELINEATING HABITAT DIRECTIVE AREAS IN THE BPNS

Species

Annex

II, non-marine

mammalsSlide18

CONCLUSION NON-MARINE MAMMALSIt is impossible to identify concentration areas, nor is it possible to take site-specific conservation measures.The importance of coastal zone for migrating fish up and down the Scheldt estuary however is acknowledged.

DELINEATING HABITAT DIRECTIVE AREAS IN THE BPNS

Species Annex II, non-marine mammalsSlide19

FOUR PARTS Part 1: Habitat Directive, Annex 1: habitat types Part 2: Habitat Directive, Annex 2: marine mammals Part 3: Habitat Directive, Annex 2: non-marine mammals Part 4: Integration

DELINEATING HABITAT DIRECTIVE AREAS IN THE BPNS

REPORTDegraer, S., U. Braeckman, J. Haelters, K. Hostens, T. Jacques, F. Kerckhof, B. Merckx, M. Rabaut, E. Stienen, G. Van Hoey, V. Van Lancker & M. Vincx (2009). Studie betreffende het opstellen van een lijst van potentiële Habitatrichtlijngebieden in het Belgische deel van de Noordzee. Final report by order of FSP Environment, Marine Environment. 93 pp.

20 to 60 % important habitat

assigned

as N2000 areaSlide20

X

XX

XX

X

X

X

X

X

X

X

X

X

X

X

Integration

DELINEATING HABITAT DIRECTIVE AREAS IN THE BPNSSlide21

Facts

29%

8%

19%

28%

46%

35%

38%

DELINEATING HABITAT DIRECTIVE AREAS IN THE BPNS