Flood detention basin Stillbach

This project shows with the right construction of the base layer, the adjusted greening techniques and the a site specific seedmixture an extensive, high valuable ecological meadow is possible. The flood detention basin was built in cooperation with the nature conservation department of Upper Austria and the Agricultural Research and Education Centre Raumberg-Gumpenstein (AREC). The demonstration site is also part of the Salvere Project and the applications of the seedmixtures from High Nature Value Farmland will be tested. For the construction of the flood detention basin different types of gravel are used as well as different seedmixture combinations. The area was sown via hydroseeding, consisting of a mixture of seed-rich material from on-site threshing of commercially propagated species from regional origin. The seed rich material from on site threshing was originated from the Welser Heide. The different samples of seed mixture are

  • Sample area I semi dry grass and mixture (AV1)
  • Sample area II poor grass and mixture (BM1)
  • Sample area III Tall oat grass meadow (AV2)

Sample area I (AV1)

GW-%

Sample area II (BM1)

GW-%

Sample area III (AV2)

GW-%

Festuca nigrescens

35

Arrhenatherum elatius

10

Festuca nigrescens

17

Festuca rupicola

18

Avenula pubescens

8

Arrhenatherum elatius

15

Bromus erectus

10

Festuca nigrescens

6

Avenula pubescens

10

Briza media

2

Lolium multifl. var. westerwoldicum

5

Bromus erectus

20

Lolium multifl. var. westerwoldicum

5

Bromus erectus

7

Briza media

2

Leucanthemum vulgare

2

Briza media

1

Lolium multifl. var. westerwoldicum

5

Anthyllis vulneraria

3

Leucanthemum vulgare

8

Leucanthemum vulgare

2

 

 

Anthyllis vulneraria

3

Anthyllis vulneraria

3

 

 

 

 

Knautia arvensis

1

seed rich material from OST

25

seed rich material from OST

52

seed rich material from OST

25

 

Map of the demonstrations site: The flood detention basin Stillbach

 

May 2009August 2009June 2010