Property:Monitoring surveys and results
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This is a property of type Text.
E
En termes de réalisation des objectifs, cette
action est une réussite puisque le transport
des sédiments est rétabli et la libre circulation
des poissons est rouverte sur un tronçon de
quatre km. Visuellement, le milieu s’est diversifi
é, on observe une granulométrie plus grossière
et plus hétérogène. Des radiers et des
habitats favorables pour des frayères réapparaissent.
Les berges commencent peu à peu
à se revégétaliser. Cependant, le linéaire rouvert
suite à l’effacement du seuil est limité par
la présence, en aval, du barrage de Sauviat,
situé à la confl uence Dore-Miodet, qui bloque totalement la continuité sur le cours d’eau. Il
n’est pas prévu à l’heure actuelle de réaliser
une quelconque action pour la restauration
de la continuité au niveau de ce barrage.
Localement, les travaux réalisés sur le seuil de
Chelles Basse ont été controversés. L’opération
a souffert d’un grand manque de communication.
Du fait de l’opportunité d’intervention
(volonté du propriétaire) et de la
localisation du site (isolé dans la forêt, sans
enjeux ni usages), les travaux ont été réalisés
rapidement, sans information ou consultation
préalable de la population locale sur
le contenu du projet. Après la réalisation de
l’effacement, les propriétaires situés plus en
aval ainsi que les protecteurs de moulins ont
exprimé leur désaccord au sujet de la destruction
d’un ouvrage considéré comme patrimonial,
appuyés par la critique d’un article
paru dans un journal local. Des réunions de
communication ont été organisées suite aux
travaux, avec les riverains et les services techniques
du CRE, afi n d’expliquer la démarche
d’opportunité de cette opération, les motivations
du projet et favoriser son acceptation.
Le prochain contrat territorial reprendra les
thématiques du CRE 2005-2010 et des actions
(non programmées encore) seront envisagées
dans le cadre de la restauration de la
continuité écologique. +
H
Enhanced habitat along approx. 70 meters of the river
Next steps: To monitor the impact of these improvements to inform plans for further works along a much longer stretch. +
M
Environment Agency funding has paid for 1.3 km of bankside fencing, 6 cattle drinking areas and a pasture pump. This will restrict livestock access to the brook and will help improve water quality. There will be reduced sediment and phosphate flows into Mackworth Brook, reduced floods flows to the Derwent, improved amenity at the site and an education tool for SuDs. +
K
Evidence suggests(although it cannot be categorically proved) that Salmon are getting past the Kirkstall weirs as a result of the project and other weir removals in the catchment. +
R
Extensive groundwater monitoring shows that the upstream groundwater level is rising, which was the intended effect of the measures taken. Locally, the stream is becoming significantly narrower due to vegetation growth in the treated areas. The measures have not been in effect long enough to draw conclusions about the effect on macroinvertebrates and fish. +
P
Extensive monitoring work has been completed and reported. The monitoring work includes sonde analysis, water quality spot sampling, redox, macroinvertebrates, diatoms, fish and freshwater pearl mussel survey.
Redox results show a clear trend towards improved dissolved oxygen content in the substrates adjacent to and downstream of the Brynteg forestry block, indicating conservation measures at this site are having immediate positive results. Glochidial surveys indicated that trout are the preferred host fish as part of the freshwater pearl mussel lifecycle. However, electro-fishing also indicated that trout were the least abundant fish in the Afon Eden. As such, conservation measures that improve the status of the trout population would also be beneficial for freshwater pearl mussel. The on-going monitoring on the Eden has helped to focus the conservation work the project has implemented. +
B
First, farmers began to cultivate ecologic rice and decrease the use of chemical components. Some rice paddies were converted into wetlands with the introduction of Phragmites australis and other techniques works. Furthermore, Iris pseudacorus were installed in the shore of wetlands. So much vegetation recovered and new natural spaces were created. +
S
Fish using new woody habitat at Avon Tyrell. Salmon redds on new riffles and cleaned gravels. Monitoring of juvenile fish using fry bays. Presence of coarse fish fry in fry bays. Presence of waders. Fixed point photography to show the changes made by the project. This monitoring will all help with future delivery of projects and give us demonstration sites we can show to angling clubs and landowners.
The only monitoring that was not able to take place were the red counts as the weather was too severe, making the water too muddy and clouded to be able to undertake surveys. +
M
Fisheries survey<br>
Pre-project data<br>
Stated objectives +
L
Fisheries survey<br>
Stated objectives<br>
Pre-project data +
H
Fisheries survey<br>River Habitat Survey<br>River Corridor Survey +
R
Fixed point photographs will be used to monitor the visible physical effects on the river of removing the weir. +
S
Fixed point photography +
B
Fixed point photography before, during & after the works.
Monthly riverfly monitoring - Anglers Riverfly Monitoring Initiative (commenced September 2015) +
Fixed point photography will be used to monitor physical changes both post and pre work. In addition a baseline survey of macrophytes, invertebrates and water quality surveys – data gathered will include – turbidity, sediment, Ammonia/Dissolved Oxygen/Phosphate using field phosphate sampling equipment. This project site will be resurveyed against baseline at the conclusion of the project in 2015. +
P
Fixed point photography will be used to assess vegetation changes and changes in river performance. +
G
Fixed point photography.
Invertebrate samples at bank regrading points and woody debris installations before works and 2 years after works.
Botanical survey of site before works and 2 years after works.
Short film documenting enhancement techniques and volunteer involvement. +
R
Floristic inventory and monitoring of the plant species composition of the habitat types in the areas of restored riverbeds as a tool in assessing the changes caused by rerouting the Goriški Brežiček and Tresenec streams. The action will be carried out by the park staff and funded by Notranjska regional Park.
Floristic inventory and monitoring of the plant species composition of the habitat types in the areas of restored riverbeds of Goriški Brežiček and Tresenec streams in order to notice possible establishing of invasive plant species, for example Himalayan Balsam (Impatiens glandulifera), Canada (Solidago canadensis) and Giant Goldenrod (Solidago gigantea), Cutleaf Coneflower (Rudbeckia laciniata), Topinambur (Helianthus tuberosus) and allochthonous species of the genus knotweed (Fallopia). Establishing is possible because construction machinery used for restoration is known to be disperser of these species and because of the suitable habitat. These plants will be manually removed, should they show up. The action will be carried out by the park staff and funded by Notranjska regional Park.
Suitable management of banks to ensure habitat diversity and accessibility; water weed management to prevent the clogging of the watercourse; dredging of the riverbeds as a rejuvenating process; bank protection to prevent erosion where needed in the areas of restored riverbeds of Goriški Brežiček and Tresenec streams will be implemented. The action will be carried out by the park staff with the external assistance where needed and funded by Notranjska regional Park +
Floristic inventory and monitoring of the plant species composition of the habitat
types in the areas of restored riverbeds as a tool in assessing the changes
caused by rerouting the Goriški Brežiček and Tresenec streams. The action will
be carried out by the park staff and funded by Notranjska regional Park.
Floristic inventory and monitoring of the plant species composition of the habitat
types in the areas of restored riverbeds of Goriški Brežiček and Tresenec streams
in order to notice possible establishing of invasive plant species, for example
Himalayan Balsam (Impatiens glandulifera), Canada (Solidago canadensis) and
Giant Goldenrod (Solidago gigantea), Cutleaf Coneflower (Rudbeckia laciniata),
Topinambur (Helianthus tuberosus) and allochthonous species of the genus
knotweed (Fallopia). Establishing is possible because construction machinery
used for restoration is known to be disperser of these species and because of the
suitable habitat. These plants will be manually removed, should they show up.
The action will be carried out by the park staff and funded by Notranjska regional
Park.
Suitable management of banks to ensure habitat diversity and accessibility; water
weed management to prevent the clogging of the watercourse; dredging of the
riverbeds as a rejuvenating process; bank protection to prevent erosion where
needed in the areas of restored riverbeds of Goriški Brežiček and Tresenec
streams will be implemented. The action will be carried out by the park staff with
the external assistance where needed and funded by Notranjska regional Park +
Following implementation of the fish pass improvements, we will monitor the impact through on-going survey work, which can be compared to past survey results. We have long term monitoring sites up and downstream of Hallcroft weir that have been monitored since the 1990’s - upstream at Eaton and downstream at Chain Bridge. Samples are usually taken in early May, so there will be a sample just before the project takes place and then we will get post project result the following May. These standardised monitoring results can also be compared to catch returns from the local angling clubs. +