Difference between revisions of "Construct semi-natural/articificial wetlands or aquatic habitats"

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(Construct semi-natural/articificial wetlands or aquatic habitats)
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=Construct semi-natural/articificial wetlands or aquatic habitats=
 
Category 08. Floodplains/off-channel/lateral connectivity habitats improvement
 
 
 
==General description ==
 
==General description ==
 
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[[File:Large semi-natural wetland at the Danube in Austria.png|350px|thumbnail|Large semi-natural wetland at the Danube in Austria (source : BOKU, IHG)]]
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Rehabilitation techniques in the floodplain include the construction of semi-natural or artificial wetlands or the creation of new floodplain ponds or backwaters. Floodplain aquatic habitats include numerous types of ponds, lakes, and depressions. These areas provide valuable overwintering habitat for fishes that prefer lentic habitats (Roni et al. 2005).
 
==Applicability ==
 
==Applicability ==
==Expected effect of measure on (including literature citations): ==
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Off-channel ponds can be created through several excavation or construction methods including excavation or damming of ponds or wetland. New backwaters and off-channel ponds in the flooplain create spawning and rearing habitat for fish. These artifical habitats have the risk to fail because of avulsion, inadequate prey resources, cover, and water quality. It is important to ensure that these constructed habitats are connected to the river as least seasonally, but preferably consistently throughout the year (Roni et al. 2005). The successful conversion of gravel pits, mill ponds, and other constructed floodplain lakes depends on several factors including depth, morphology and cover (Norman 1998).
*HYMO (general and specified per HYMO element)  
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*physico � chemical parameters
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==Expected effect of measure on (including literature citations)==
*Biota (general and specified per Biological quality elements)
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{| {{table}}
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| align="center" style="background:#f0f0f0;"|'''Category'''
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| align="center" style="background:#f0f0f0;"|'''Description'''
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| align="center" style="background:#f0f0f0;"|'''Source (citation)'''
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|-
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| HYMO||Higher diversity of habitats and substrates than in the main channel||Habersack and Nachtnebel 1995
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|-
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| ||||
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|-
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| Macrophytes||||
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|-
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| Macroinvertebrats||Higher diversity  and density of macroinvertebrates than in the main channel||Habersack and Nachtnebel 1995
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|-
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| Fish||Higher fish densities than in the main channel||Habersack and Nachtnebel 1995
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|}
 
==Temporal and spatial response  ==
 
==Temporal and spatial response  ==
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Not available.
 
==Pressures that can be addressed by this measure ==
 
==Pressures that can be addressed by this measure ==
 
<Forecasterlink type="getPressuresForMeasures" code="M63" />
 
<Forecasterlink type="getPressuresForMeasures" code="M63" />
==Cost-efficiency ==
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==Cost-efficiency==
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Not available.
 
==Case studies where this measure has been applied ==
 
==Case studies where this measure has been applied ==
 
<Forecasterlink type="getProjectsForMeasures" code="M63" />
 
<Forecasterlink type="getProjectsForMeasures" code="M63" />
 
==Useful references ==
 
==Useful references ==
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*Habersack, H., and H. P. Nachtnebel (1995). Short-term effects of local river restoration on morphology, flow field, substrate and biota. Regulated Rivers Research and Management, 10, 291–301.
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*Norman, D.K. (1998). Reclamation of flood-plain sand and gravel pits as off-channel salmon habitat. Washington Geology, 26, 21-28
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*Roni, P., K. Hanson, T. Beechie, G. Pess, M. Pollock, and D. M. Bartley (2005). Habitat rehabilitation for inland fisheries. Global review of effectiveness and guidance for rehabilitation of freshwater ecosystems. FAO Fisheries Technical Paper, 484.�
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==Other relevant information ==
 
==Other relevant information ==
  
 
[[Category:Measures]][[Category:08. Floodplains/off-channel/lateral connectivity habitats improvement]]
 
[[Category:Measures]][[Category:08. Floodplains/off-channel/lateral connectivity habitats improvement]]

Revision as of 22:25, 8 December 2015

General description

Large semi-natural wetland at the Danube in Austria (source : BOKU, IHG)

Rehabilitation techniques in the floodplain include the construction of semi-natural or artificial wetlands or the creation of new floodplain ponds or backwaters. Floodplain aquatic habitats include numerous types of ponds, lakes, and depressions. These areas provide valuable overwintering habitat for fishes that prefer lentic habitats (Roni et al. 2005).

Applicability

Off-channel ponds can be created through several excavation or construction methods including excavation or damming of ponds or wetland. New backwaters and off-channel ponds in the flooplain create spawning and rearing habitat for fish. These artifical habitats have the risk to fail because of avulsion, inadequate prey resources, cover, and water quality. It is important to ensure that these constructed habitats are connected to the river as least seasonally, but preferably consistently throughout the year (Roni et al. 2005). The successful conversion of gravel pits, mill ponds, and other constructed floodplain lakes depends on several factors including depth, morphology and cover (Norman 1998).

Expected effect of measure on (including literature citations)

Category Description Source (citation)
HYMO Higher diversity of habitats and substrates than in the main channel Habersack and Nachtnebel 1995
Macrophytes
Macroinvertebrats Higher diversity and density of macroinvertebrates than in the main channel Habersack and Nachtnebel 1995
Fish Higher fish densities than in the main channel Habersack and Nachtnebel 1995

Temporal and spatial response

Not available.

Pressures that can be addressed by this measure

Cost-efficiency

Not available.

Case studies where this measure has been applied

Useful references

  • Habersack, H., and H. P. Nachtnebel (1995). Short-term effects of local river restoration on morphology, flow field, substrate and biota. Regulated Rivers Research and Management, 10, 291–301.
  • Norman, D.K. (1998). Reclamation of flood-plain sand and gravel pits as off-channel salmon habitat. Washington Geology, 26, 21-28
  • Roni, P., K. Hanson, T. Beechie, G. Pess, M. Pollock, and D. M. Bartley (2005). Habitat rehabilitation for inland fisheries. Global review of effectiveness and guidance for rehabilitation of freshwater ecosystems. FAO Fisheries Technical Paper, 484.�

Other relevant information