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![Page 1: Www.inbo.be Research Institute for Nature and Forest Kliniekstraat 25 B-1070 Brussels Different approaches to habitat assessment in the Belgium Atlantic.](https://reader035.fdocuments.in/reader035/viewer/2022062517/56649f295503460f94c42938/html5/thumbnails/1.jpg)
Research Institute for Nature and Forest Kliniekstraat 25 • B-1070 Brussels www.inbo.be
Different approaches to habitat assessment in the Belgium Atlantic region
Learning for the future
![Page 2: Www.inbo.be Research Institute for Nature and Forest Kliniekstraat 25 B-1070 Brussels Different approaches to habitat assessment in the Belgium Atlantic.](https://reader035.fdocuments.in/reader035/viewer/2022062517/56649f295503460f94c42938/html5/thumbnails/2.jpg)
Desiré Paelinckx, Marc Dufrêne
Data sources
![Page 3: Www.inbo.be Research Institute for Nature and Forest Kliniekstraat 25 B-1070 Brussels Different approaches to habitat assessment in the Belgium Atlantic.](https://reader035.fdocuments.in/reader035/viewer/2022062517/56649f295503460f94c42938/html5/thumbnails/3.jpg)
Desiré Paelinckx, Marc Dufrêne
Heterogeneity of data
6510 Lowland hay meadows
“actual” flora distribution
historical flora distribution
Flanders > 1972 very intensive and rather complete inventory
1930 – 1972 reliable inventory 4 x 4 km2
Walloon Atlantic From 1980 on systematic inventory of Walloon’s Red List species, but not all wanted typical species included additional expert judgement
< 1980 reliable inventory 4x 4 km2
![Page 4: Www.inbo.be Research Institute for Nature and Forest Kliniekstraat 25 B-1070 Brussels Different approaches to habitat assessment in the Belgium Atlantic.](https://reader035.fdocuments.in/reader035/viewer/2022062517/56649f295503460f94c42938/html5/thumbnails/4.jpg)
Desiré Paelinckx, Marc Dufrêne
Heterogeneity of data
6510 Lowland hay meadows
![Page 5: Www.inbo.be Research Institute for Nature and Forest Kliniekstraat 25 B-1070 Brussels Different approaches to habitat assessment in the Belgium Atlantic.](https://reader035.fdocuments.in/reader035/viewer/2022062517/56649f295503460f94c42938/html5/thumbnails/5.jpg)
Desiré Paelinckx, Marc Dufrêne
Decisions to make
Which data source to use for which purpose?Uniformity within one habitat type !! habitat type within both Flanders AND Walloon
Atlantic region grid 4 x 4 km2 is most obvious
Habitat type only in Flanders free choice?
Is it more obvious to combine data sources or is one satisfactory?
• For Flanders the grid 4 x 4 (> 1972) contain all data available within 1 x 1 grid, and vice versa
• habitat map and flora distribution database are completely independent!
![Page 6: Www.inbo.be Research Institute for Nature and Forest Kliniekstraat 25 B-1070 Brussels Different approaches to habitat assessment in the Belgium Atlantic.](https://reader035.fdocuments.in/reader035/viewer/2022062517/56649f295503460f94c42938/html5/thumbnails/6.jpg)
Desiré Paelinckx, Marc Dufrêne
Can we use only the habitat map?
Pink = habitat map
Yes, if we are sure this is complete, BUT, e.g. 6510 (lowland hay meadows):
Green = flora distribution without matches in the habitat map
![Page 7: Www.inbo.be Research Institute for Nature and Forest Kliniekstraat 25 B-1070 Brussels Different approaches to habitat assessment in the Belgium Atlantic.](https://reader035.fdocuments.in/reader035/viewer/2022062517/56649f295503460f94c42938/html5/thumbnails/7.jpg)
Desiré Paelinckx, Marc Dufrêne
Can we use only the habitat map?
1310 Salicornia and other annuals colonising mud and sand
![Page 8: Www.inbo.be Research Institute for Nature and Forest Kliniekstraat 25 B-1070 Brussels Different approaches to habitat assessment in the Belgium Atlantic.](https://reader035.fdocuments.in/reader035/viewer/2022062517/56649f295503460f94c42938/html5/thumbnails/8.jpg)
Desiré Paelinckx, Marc Dufrêne
General approach
• Distribution and range < • Flanders: combination of habitat map and flora
distribution data• Walloon Atlantic: expert judgement by
interpretation of the flora distribution data • Area <
• Flanders: habitat map• Walloon Atlantic: other data sources and/or expert
judgement• Favourable reference range < historical flora
distribution data combined with:• Flanders: maps of potential distribution and expert
opinion• Walloon Atlantic: expert opinion• For forest habitat types: Potential natural
vegetation map
![Page 9: Www.inbo.be Research Institute for Nature and Forest Kliniekstraat 25 B-1070 Brussels Different approaches to habitat assessment in the Belgium Atlantic.](https://reader035.fdocuments.in/reader035/viewer/2022062517/56649f295503460f94c42938/html5/thumbnails/9.jpg)
Desiré Paelinckx, Marc Dufrêne
Makes it a difference?
Case 1: dune habitats
2120 Shifting dunes along the shoreline with Ammophila arenaria
area < habitat map; distribution and range 1 x 1 km2
![Page 10: Www.inbo.be Research Institute for Nature and Forest Kliniekstraat 25 B-1070 Brussels Different approaches to habitat assessment in the Belgium Atlantic.](https://reader035.fdocuments.in/reader035/viewer/2022062517/56649f295503460f94c42938/html5/thumbnails/10.jpg)
Desiré Paelinckx, Marc Dufrêne
Makes it a difference?
Case 2: specific structures and functions, e.g. 6510 Lowland hay meadows
Habitat MapFlora 4 x 4 km2 Flora 4x4 grid cells with habitat < habitat map
Flora 1 x 1 km2
![Page 11: Www.inbo.be Research Institute for Nature and Forest Kliniekstraat 25 B-1070 Brussels Different approaches to habitat assessment in the Belgium Atlantic.](https://reader035.fdocuments.in/reader035/viewer/2022062517/56649f295503460f94c42938/html5/thumbnails/11.jpg)
Desiré Paelinckx, Marc Dufrêne
Makes it a difference?
Case 2: specific structures and functions, e.g. 1310 Salicornia and other annuals colonising mud and sand
Flora 1 x 1 km2 (75) Flora 4x4 for grid cells with habitat < habitat map (10)
Flora 4 x 4 km2 (31)
![Page 12: Www.inbo.be Research Institute for Nature and Forest Kliniekstraat 25 B-1070 Brussels Different approaches to habitat assessment in the Belgium Atlantic.](https://reader035.fdocuments.in/reader035/viewer/2022062517/56649f295503460f94c42938/html5/thumbnails/12.jpg)
Desiré Paelinckx, Marc Dufrêne
Makes it a difference?
Case 2: specific structures and functions, e.g. 1310 Salicornia and other annuals colonising mud and sand
the areas with a large surface of 1310 = favourable condition most likely that habitat quality is inadequate instead of bad
![Page 13: Www.inbo.be Research Institute for Nature and Forest Kliniekstraat 25 B-1070 Brussels Different approaches to habitat assessment in the Belgium Atlantic.](https://reader035.fdocuments.in/reader035/viewer/2022062517/56649f295503460f94c42938/html5/thumbnails/13.jpg)
Desiré Paelinckx, Marc Dufrêne
Makes it a difference?
6510 Lowland hay meadowsHabitat MapFlora 4 x 4 km2 Flora 4x4 grid cells with habitat
< habitat mapFlora 1 x 1 km2
1310 Salicornia and other annuals colonising mud and sandFlora 1 x 1 km2 (75) Flora 4 x 4 km2 (31) Flora 4x4 for grid cells with
habitat < habitat map (10)??REAL FIELD SITUATION??
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Desiré Paelinckx, Marc Dufrêne
Use of Red List information on typical species
Most of the time we do not really use this information < it is to largely depended on the choice of the typical species
Gives mostly a much favourable output than all other data and expert judgement indicate
But e.g. 2160 Dunes with Hippophae rhamnoides
Flora distribution data
Analysis of Red List Species
84%
8%
8%
rarenear threatenedleast concern
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Desiré Paelinckx, Marc Dufrêne
Conclusions for future work
In stead of use of flora distribution data of typical species focus on:
• Direct habitat mapping and monitoring in the field • Direct field assessment and monitoring of the
local conservation status in a monitoring network
A first priority is:- Search the habitats within the grid cells only
indicated by the flora distribution data- Defining the monitoring network(s) and starting
the monitoring- ALREADY DONE IN THE WALLOON REGION! (see next
presentation)- To start up completely in the Flemish region
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Desiré Paelinckx, Marc Dufrêne
More information on our habitat map?
• It is derived from the so called Belgian Biological Valuation Map, which is a uniform survey of the whole surface (including e.g. urban and agricultural areas) using a predefined legend of landcover units, vegetation types and small landscape elements at a scale of 1/10.000
• Since the translation of its legend to Natura 2000 habitat types gives some problems since 2003 we started mapping these habitats directly in the field
See http://www.inbo.be/content/homepage_en.asp