Property:Supplementary information
Jump to navigation
Jump to search
This is a property of type Text.
B
'''Acknowledgements'''
The authors are grateful for support from the projects CENAKAVA CZ.1.05/2.1.00/01.0024 and GA JU 047/2010/Z. Further our thanks for valuable advice go out to fish pass designer and builder Zdeněk Linhart. We also thank Vladimír Šámal for providing important data and information, and Miroslav Fenc for extensive assistance during field work.
'''References'''
*Cowx I.G. & Welcomme L.R. (eds) (1998): Rehabilitation of rivers for fish. – Fishing News Books, Oxford.
*Gebler J.R. (2009): Fischwege und Sohlengleiten. – Verlag Wasser und Umwelt, Walzbachtal.
*Hartvich P., Dvořák P. & Holub M. (2004): Výskyt ryb v rybím přechodu na řece Blanici v Bavorově (Occurrence of fish in the fish pass on the Blanice River at Bavorov). – Biodiverzita ichtyofauny České republiky 5: 93–98.
*Krupauer V. (1984): Kvalitativní a kvantitativní složení ichtyofauny v horním toku Blanice (Qualitative and quantitative ichthyofauna composition in the Blanice upper stream). Sborník Vysoké školy zemědělské České Budějovice, řada zootechnická 2: 2–18.
*Křížek J., Dubský K. & Randák T. (2004): Ichtyologický průzkum řeky Blanice pramenící v CHKO Šumava (Ichthyologic survey of the Blanice river having its source in the Šumava Protected Landscape Area). – In: Vykusová B. (ed.), VII. Česká ichtyologická konference(VII. Czech Ichthyological Conference), sborník příspěvků z odborné konference s mezinárodní účastí pořádané ve Vodňanech 6.–7. 5. 2004 v rámci XIV. Vodňanských rybářských dnů, pp. 11– 15, Jihočeská univerzita v Českých Budějovicích, Výzkumný ústav rybářský a hydrobiologický, Vodňany.
*Kubečka J., Matěna J. & Hartvich (1997): Adverse ecological effects of small hydropower stations in the Czech Republic: 1. Bypass plants. – Regulated Rivers: Research and Management 13: 101–113.
*Lucas C.M. & Baras E. (2001): Migration of freshwater fishes. – Blackwell Science, Oxford.
*Lusk S., Hartvich P. & Lojkásek B. (2011): Migrace ryb a migrační prostupnost vodních toků (Migration of fishes and migration permeability of water streams). – Biodiverzita ichtyofauny České republiky 8: 5–67.
*Peter A. (1998): Interruption of the river continuum by barriers and the consequences for migratory fish. – In: Jungwirth M., Schmutz S. & Weiss S. (eds), Fish migration and fish bypasses, pp. 99–112, Fishing News Books, Oxford.
R
'''Description of Works
In order that we solve the problems in the Rea catchment, the River Rea Restoration aims to advise and assist farmers and land owners in applying the correct and relevant practices and tackle the issues by delivering the following measures:
*Fencing - where agricultural practices have been identified to be causing the watercourse to fail to meet WFD standards, riparian fencing and associated drinking points will result in multiple benefits. The poaching of riverbanks by livestock will be reduced,as will the associated excess sediment inputs. Vegetation will become re-established along the riverbanks, therefore increasing riparian habitat and biodiversity. This will result in the establishment of a buffer zone that will reduce the amount of nutr ient runoff that enters the watercourse from farmland and roads.
*Reconnecting habitat - where an obstruction to fish passage exists within the river channel, the project will look to remove it, or at the very least, make it passable. This will not only open up more habitat to migratory fish, but where removal occurs it will
also return the sediment movement to a more natural regime.
*Riparian Management – Bankside trees that have not been cut or coppiced for several years and have been allowed to grow up can shade riverbanks, restricting sunlight to under-storey vegetation and result in bare ground under the trees which is then
susceptible to erosion. The aim is to increase the amount of light getting through the canopy, promote natural re-growth of bankside plants and increase levels of bank stability and stabilise the spread of Phytophthora amongst the Alders, reducing
bank side collapse (another main source of sediment).
*Community engagement - this is essential to the long term success of the project as it encourages local ownership and support. It is seen as an integral part of an integrated catchment management approach. We will increase and improve community engagement and establish a sense of ownership and responsibility of their rivers through active groups for future improvements and monitoring.
'''What will success look like?
As a charitable organisation, the Severn Rivers Trust want to work with farmers, landowners and other associated partner
organisations to ensure that our priorities are aligned in order to
achieve land management solutions that benefit both people
and the environment. Through education, we hope that farmers
and landowners will take ownership of the issues affecting their
watercourses, ensuring that they understand their direct and
indirect dependence on these natural resources and the
services they provide. Our principal aim is to see watercourses
in the Rea area achieve Good Ecological Status under the Water Framework Directive. This will mean a return to natural flow
regimes, improved water quality, increased riverine habitat and reconnected habitat, ultimately resulting in a better river
environment that can sustain greater biodiversity.
G
'''The site'''
• Tidal range 7m.
• Over 1300m of sheet piling was in poor condition and needed to be replaced.
• Peninsula being redeveloped for high-density, high-value housing and facilities.
'''What the developers did'''
• In all locations, the existing sheet pile wall was cut down to near beach level and capped.
• Approximately 7–15m inland, either sheet pile or an L-shaped concrete wall were installed.
• Site 1: infill material was installed over wide area at stable angle of repose and allowed to colonise naturally.
• Sites 2 and 3: terraces were created between the new wall and the foreshore using gabions and wooden piles, maximising the area between Mean High Water Neap and Mean High Water Spring tide levels wherever possible at slopes of 1:7 or less. Growing medium initially protected under coir matting.
• Sites 2 and 3 were planted with a variety of saltmarsh plants through coir matting. Substrate particle size distribution was a close match to foreshore for both stability in local area and habitat value. Eastern wall, Greenwich Peninsula, London: Site 2 during construction
'''The result'''
• Wave action led to lifting of the matting and extraction of many young plants, necessitating some replanting, though there was also considerable natural colonisation.
• Re-planting of Sites 2 and 3 directly into substrate without erosion matting was most successful with Common Reed, Grey Club-rush Sea Club-rush and Sea Aster, several species surviving well below or above the main ‘saltmarsh zone’.
• Failure to install rhizome breaks has led to excessive dominance by Common Reed, which may need to be corrected.
• Freshwater outfall locations became areas bare of much vegetation, and reinforced geotextile mat used at these locations eventually looked unsightly.
• Extensive monitoring has shown intense use of the terraces by Sea Bass and other species.
• Flounder and adult Common Goby did not appear to ascend submerged terrace steps. One solution to this is shown in the design for the terracing at Site 3, where a series of terraces sloping in three dimensions was created in the form of an ‘ecological sculpture’. (In future schemes, cutting down of the old sheet pile to beach level should be considered to avoid the creation of barriers to certain fish species).
• Limited scope for human access, which might be addressed in future schemes by a variety of slipways or floating pontoons (where ecological and safety constraints permit).
• Overall considered to be a highly successful, benchmark design, though a few gabions appear to be breaking down after ten years (probably due to use of welded gabions) and repairs/renewals may be necessary to retain certain terraces (woven and plastic-coated gabions are always the preferred option if gabions are to be used).
L
'''[[Case_study:Barking Creekmouth]]'''
*Tidal backwater creating two areas of BAP habitat: 0.1ha tidal mudflat habitat and 0.9ha of saltmarsh habitat.
*New site entrance
*Two seating/viewing areas with site information boards
*Retreated flood defence providing approx. 15,000m3 additional storage
*310m new footpath
'''[[Case_study:Baking Creek near A13]]'''
*Retreat and renewal of a 50m section of flood defence providing approximately 2000m3
*Creation of approx. 390m2 of BAP habitat (including mudflat and saltmarsh) at the site
'''[[Case_study:Cuckolds Haven Nature Area]]'''
*Create riverside seating area and info boards
*New site entrance
*130m new footpath
'''[[Case_study:Mill Pool]]'''
*3-level intertidal terracing of 30m riverbank
*Redesigned seating area +
S
'''construction'''
The works were designed to alleviate flooding in the Lewisham area. The flood detention area was constructed on the Quaggy River. The location of the detention area is approximately 3km east of Lewisham, in the London Borough of Greenwich, in Sutcliffe Park, formerly eight football pitches. The construction includes a 2.5m high x 480m long earth embankment, which surrounds Sutcliffe Park. The embankment is 2.5m high at its highest point to the west side of the site and at existing ground level to the east. The embankment retains floodwaters within the reservoir basin that has been excavated. The culvert carrying the river follows two sides of the park and is to remain. The low flow inlet control structure was formed through cutting slots into the side of the culvert and a reinforced concrete channel to direct the flow into the park. A few metres downstream of the low flow inlet is a 0.5m high weir to direct the majority of the flow through the park.
The high flow inlet also has slots cut into the side of the culvert and a concrete slab in front to prevent erosion. Just downstream of the high flow inlet a flume has been constructed within the culvert to constrict the flow. The spillway also has slots in the side of the culvert and the landform is at a lower level to allow the water back into the culvert at this location. The outlet structure is constructed from reinforced concrete and has a plastic pipe connecting the flow from the park back into the culvert. The low flow inlet and outlet structures have penstocks within them to control the water movements.
'''description'''
The plans for the river restoration programme date back as far as 1989, although the work did not commence until April 2003 and the park was re-opened in June 2004. Prior to the restoration work, Sutcliffe Park was described as a flat area of open greenspace with a lack of biodiversity, with the mown grassland primarily used for sporting activities. It consisted of 11 football pitches and an athletics track, with only the track remaining since the enhancements. It is about 1.6 km in circumference with numerous entrances and exits. Since the 1930s the River Quaggy has ran underground along a concrete channel, referred to as a “culvert”, around two sides of the park.
The park has now been re-landscaped to create a naturalised river, which flows through the park at surface level. The culvert still exists, but now overflows into the park when it is full. The design of the park allows a controlled flood to occur which covers the lower lying sections of the park, where the river feeds into the lake. An important influence of this scheme is the presence of a local action group called “The Friends of The Quaggy / QWAG”. Community participation and involvement of local residents played a key role in identifying and campaigning the viable alternative to river channelisation.
The restored park is more of a wetland environment as it provides a variety of habitats for local wildlife, including reed beds and a shallow lake. The park is now rich in biodiversity and users have commented on the “joy of watching nature doing its own thing”. It has a more formal feel at one end due to its wrought iron railings and traditional benches, whereas the opposing end is more natural with bridges, boardwalks and outdoor furniture. There is a circular seating area which acts as a meeting place for local residents and school children to convene. The abundance of flora and fauna allows visitors an opportunity to learn about environmental matters.
Users of Sutcliffe Park include predominantly dog walkers and joggers. It is also used by family groups to feed the ducks and as a thoroughfare to bus stops. The establishment of a “Friends of Sutcliffe Park” is currently emerging and a recommendation for the local walking group “Green chain” to include the park within their routes is being addressed.
L
*ABPmer, 2008. Habitat Creation in Flood Storage Areas. ABPmer report R.1441
Cox, T., Maris, T., de Vleeschauwer, P., de Mulder, T., Soetaert, K. & Meire, P., 2006. Flood control areas as an opportunity to restore estuarine habitat. Ecological Engineering 28(1), 55-63.
*Maris, T., Cox, T., Jacobs, S., Beauchard, O., Teuchies, J., van Liefferinge, C., Temmerman, S.,van den Bruwaene, W. & Meire, P., 2008. Natuurontwikkeling in het Lippenbroek - herstel van estuariene natuur via een gecontroleerd gereduceerd getij. Natuur.focus 7(1), 21-27.
*Maris T., Cox T., Temmerman S., De Vleeschauwer P., Van Damme S., De Mulder T., Van den
Bergh E. and Meire P., 2007. Tuning the tide: creating ecological conditions for tidal marsh development in a controlled inundation area. Hydrobiologia 588, 31-43.
*Simoens, I., Breine, J., Van Liefferinge, C., Stevens, M., and Belpaire, C., 2007. Het belang van het Lippenbroek als habitat voor vissen in de Zeeschelde. Congres Watersysteemkennis 2006 –2007 - Ecologisch Herstel; 4p.
+
N
*Chisholm, K., Kindleysides, D., Cowie, N., 2004. Identifying, developing and implementing coastal realignment projects in Scotland; Lessons learned from Nigg Bay, Cromarty Firth. RSPB,Inverness.
*Crowther, A., 2007. The restoration of intertidal habitats for non-breeding waterbirds through breached managed realignment. Thesis submitted for the degree of Doctor of Philosophy, The University of Stirling.
*Nottage, A., Robertson, P., 2005. The saltmarsh creation handbook: a project manager's guide to the creation of saltmarsh and intertidal mudflat. RSPB, Sandy, 128p.
*The Royal Society for the Protection of Birds (RSPB), 2005. RSPB’s involvement in intertidal habitat creation projects. RSPB, Sandy, 7p.
+
C
*Creation and restoration of coastal and estuarine habitats A review of practical examples and a description of sequential guidelines for habitat creation and restoration in port areas (2007) S. Bracke, T. Bucx, N. Frost, H. Jaspers, J. de Groot, G. Quemeneur, F. Sahin, P. Slim, H. Slootweg, H. Smit, E. de Swart, T. Tessier, L. Vermeersch, T. Vanoutrive. New Delta
*Environmental Statement for a Managed Realignment Scheme at Chowder Ness. Report No. R.979. (2004). ABPmer
*Managed Realignment in the Humber Estuary, UK. (2008). Hemingway, K.L., Cutts, N.C. & R. Pérez-Dominguez., Institute of Estuarine & Coastal Studies (IECS), University of Hull, UK.
*Potential for sustainable habitat creation in the Humber Estuary. Environment Agency Humber estuary shoreline management plan habitat migration study. (2000) Binnie Black and Veatch
*www.abpmer.net
*www.abports.co.uk
*www.harbasins.org
*www.humberems.co.uk
+
1. Nationalpark Gesäuse GmbH (2010) Laienbericht des Projektes
2. Nationalpark Gesäuse GmbH (2011) Project's Final Report +
R
A public consultation meeting was held pre restoration in Midsomer Norton, roughly late 2010 – no documentation is available.
A project assessment report undertaken by Woodland, Water & Gardens (Luke Kozak) identified stakeholder engagement as a key part of the future of the project. Recommendations for this included:
-An increased presence of ornamental plants to please residents who dislike the "wild" look of channel vegetation
-Interpretation boards to identify in-channel plants and animals
-Sculptural representation of "creatures of the River Somer" constructed from local stone, wood or wrought iron
-Formal ecological tours of the channel, specifically for school children
-Regularly updated bulletin board including section to log "recent sightings" +
E
Elimination of a pond along the Erve River and conservation of the historical heritage in Sainte-Suzanne-et-Chammes +
All information on this page is copied from the AFB, the French agency for biodiversity +
L
All information on this page is copied from the AFB, The French agency for biodiversity. +
R
All information on this page is copied from the AFB, The French Agency for Biodiversity. +
All information on this page is copied from the the AFB, The French National Agency for Biodiversity. +
K
Considered to be the largest ever weir removal undertaken in Wales. Removal has allowed 160km of the Monnow catchment to be restored to its natural condition of flow and connectivity. +
G
Construction start date – between September 2024 and January 2025
10 months construction phase
Construction completion date – between July 2025 and November 2025
Dependent on permission and agreements
Marine Licence application submitted January 2024
Planning Permission application submitted April 2024
Landowner Agreement Heads of Terms
Partnership Contribution Agreement +
K
For over 100 years the River Aire, from the Bradford area down to the river's confluence with the Ouse at Airmyn, was almost totally devoid of fish due to gross pollution. Following the alleviation of the pollution in the late 20th century, there are now fish populations along the full length of the river from the source near Malham down to the Ouse.
Even though gross pollution has been eliminated, the Aire still suffers from a legacy of industrial and navigational weirs which have prevented the return of migratory fish and harmed the prospects of non-migratory species. The navigational weirs are still in use, and other weirs have been retained for various leisure and conservation reasons. This has meant that fish passes have had to be constructed so that the weirs no longer pose a complete barrier to fish movement. Over the last few years fish passes have been constructed at Castleford, Lemonroyd, Fleet, Rothwell Country Park, Thwaite Mills and Rodley. The fish passes at Burley Mills and St Ann's Mill in Kirkstall are the latest additions to this list.
As part of the Leeds Flood Alleviation Scheme, a further two fish passes are planned to be built by 2016 at Knostrop and Crown Point in Leeds. There are strong possibilities for fish passes at a further four sites in the relatively near future. The various Yorkshire Rivers Trusts and the Environment Agency continue to look for further opportunities to add fish passes to Weirs on the Aire and other Yorkshire rivers in order to return the rivers to their full potential for fish and other wildlife. +
R
Friberg, N., Kronvang, B., Svendsen, L.M., Hanse, H.O., Nielsen, N.B. (1994). Restoration of a channelized reach of the River Gelså, Denmark: Effects on the macroinvertebrate community. Aquatic Conservation: Marine and Freshwater Ecosystems, 4 (4), 289-296. +
A
Historical maps showed a more dynamic river system prior to agriculture, conifer afforestation and land drainage in the catchment. The river had cut down into its bed, severing it from its floodplain on all but extreme events. Gravels had been scoured out of large areas of the watercourse leaving a cobble substrate sub-optimal for spawning salmonids. Significant lengths of the river were also dry during the extended dry spell in summer of 2018. The project commenced in early 2018 with felling of conifer, ditch blocking and instream structures to wet up the site and re-link the river to the floodplain and then the installation of 15 leaky dams and scrapes. +
P
In addition to in-stream restoration, Pearls in Peril (PIP) has worked with a local landowner to implement an agri-environment scheme creating 12ha of wet woodland. PIP successfully applied for additional funding from Angus Environment Trust and with landowner permissions completed fencing and tree planting along 7km of the Quharity Burn, a main tributary of the South Esk. +