General characteristics
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| Algemene kenmerken | |
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Common name | The Eurasian Bittern or Great Bittern - Botaurus stellaris | Region | The |
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Nederlands | Water systems | Banks, lakes | Nature parameters |
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Birds | Factsheet made by | K.E. van de Wolfshaar |
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Description habitat
Occurrence
The bittern prefers shallow water with thick and extensive vegetation, preferably older reed vegetations. The species sometimes nest in small reed borders. It avoids waters that are completely surrounded by forest or swamp forest. They search for food in the vicinity of their nests, near quit lakes and ditches with thick border vegetation. The bittern can be found throughout The Netherlands, the largest number nests in lowland peat soils and the Gelderse Poort #2.. The great bittern only occurs in low lying marshy grounds covered with large reed fields #1.
Food habitat and strategy
It mainly eats fish, amphibians, insects, but also small birds, mammals and aquatic invertebrates #1.
Breeding and migration
Dose-effect relations
See also Algemeen - Broed en rust habitat (Water)vogels voor algemene rekenregels voor vogels. general dose-effect relations for breeding and resting (in Dutch).
| Section |
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| | Chart |
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| dataDisplay | true |
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| legend | false |
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| xlabel | Depth (m) |
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| dataOrientation | vertical |
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| title | Waterdepth |
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| type | xyline |
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| yLabel | HSI |
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| Depth (m) | HSI |
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0 | 0.0 | 0.1 | 0.4 | 0.15 | 1 | 0.3 | 1 | 0.6 | 0 |
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Reference: #3 |
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| | Chart |
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| dataDisplay | true |
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| legend | false |
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| xlabel | Width(m) |
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| dataOrientation | vertical |
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| title | Average width reed vegetation |
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| type | bar |
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| yLabel | HSI |
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| Width (m) | HSI |
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< 10 | 0 | > 10 | 1 |
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Reference: #3 |
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| Column |
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| | Chart |
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| dataDisplay | true |
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| legend | false |
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| xlabel | proportion(km/ha) |
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| dataOrientation | vertical |
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| title | Reed along open water |
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| type | bar |
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| yLabel | HSI |
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| proportion (km/ha) | HSI |
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< 0.1 | 0.4 | 0.1 - 0.15 | 0.8 | > 0.15 | 1 |
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Reference: #3 |
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Uncertainty and validation
These Uncertainty and validation
There dose-effect relations have not been validated.
Area of application
Fresh waters and salt waters.
Exemplary project
There is no exemplary project.
References
1
http://www.soortenbank.nl/ 2 http://www.synbiosys.alterra.nl/natura2000/ 3 HSI-model Rietzanger