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H91EO - Alluvial forests with Alnus glutinosa and Fraxinus excelsior (Alno-Padion, Alnion incanae, Salicion albae)

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Description habitat

This habitat type includes a wide range of riparian forests. These forests belong to the following three different sociological plant associations:

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Important environmental factors that determine the occurrence of this habitat type are the inundation period, soil type and grazing density. Groundwater level is mainly determined by the water level/inundation period and is therefore not included as an extra parameter. The following dose effect relations include the combined conditions for various types of forests, as they make up this habitat type. For various inundation periods and soil types, different vegetation types can be dominant. For effect modelling it is therefore worth considering to make a distinction between the various types of forests, using Duel et al #5 en #6. The dose effect relations for forests with White willow, Black poplar, Ash-Elm and Alder-Ash have already been included (see caption subvegetation types). For Alm and Esh forests and Alder en Elm forest, the groundwater level dose effect relations have been included also.

Flow chart

{flowchart}graph[
rankdir=LR]
nodesep=0.5
"node0" [
label = "inundation period|grazing|soil type"
shape = "record"
];

"node3" [
label = "HSI general"
shape = "record"
];

"node0":f1-> "node3" [style=italic,label="minimum"]
[
id = 2
];
{flowchart}

{flowchart}graph[
rankdir=LR]
nodesep=0.5
"node0" [
label = "Water depth|inundation period|grazing"
shape = "record"
];


"node3" [
label = "HSI fresh water tidal area - White willow forest"
shape = "record"
];



"node0":f1-> "node3" [style=italic,label="minimum"]
[
id = 2
];
"node1" [
label = "inundation period Black poplar| inundation period White willow  |<f3>Ash-Elm forest|<f4>Alder-Ash forest|"
shape = "record"
];

"node2"[label=" inundation period Ash-Elm|Groundwater level Ash-Elm" shape="record"];

"node4"[label=" inundation period Alder-Ash|Groundwater level Alder-As" shape="record"];

"node2" ->"node1":f3 [style=italic,label="minimum"]
"node4" ->"node1":f4 [style=italic,label="minimum"]



"node5" [
label = "HSI inundation period river area"
shape = "record"
];
"node1" -> "node5" [style=italic,label="maximum"]
"node6" [
label = "HSI General"
shape = "record"
];



"node3" -> "node6" [style=italic,label="maximum"]
"node5" -> "node6" [style=italic,label="maximum"]
{flowchart}

Dose-effect relations

River area – all forests of H91E0

Dose-effect relations

River area – all forests of H91E0

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