Holistic Approach in Lake Restoration Hola Lake-project 1.1.(1.10.) - - PowerPoint PPT Presentation
International Leader-project Holistic Approach in Lake Restoration Hola Lake-project 1.1.(1.10.) 2017 31.12.2019 Mirva Ketola Lake Vesijrvi Foundation Partners in Finland Lake Vesijrvi Foundation: Lake Vesijrvi Association for Water
Lake Vesijärvi Foundation: Lake Vesijärvi Association for Water and Environment of Western Uusimaa (Luvy): Lakes Hiidenvesi, Lohjanjärvi, Enäjärvi Pyhäjärvi Institute: Lake Köyliönjärvi
Köyliönjärvi Vesijärvi Lohjanjärvi Hiidenvesi Enäjärvi
Osby municipality: Lake Immeln Regito Research Center on Water and Health Immeln
prevent mass development of nuisance algae
WP1 External loading
Improve the knowledge and methods on the management of external loading. Reduce external loading.
WP 2 Management of fish communities
Improve the knowledge and the efficiency of methods on the management of fish
WP 3 Water quality and phytoplankton blooms
Improve the understanding of nuisance algae and the measures how to prevent mass development of them.
WP 4 Reed management
Improve the understanding of the reed management. Enhance the use of harvested reed as raw material.
Synthesis 1: Best practices in reducing external loading + new innovations + simple instructions to land owners for the monitoring and maintenance of water protection structures Synthesis 2: Best practices in the management of fish stocks + simple instructions how to fish and use less valuable fish Synthesis 3: Better understanding of the development of phytoplankton blooms + simple instructions for citizen-based monitoring of water quality Synthesis 4: Best practices in the management and use of reeds + simple instructions how to manage own shore
LAGS Etpähä & PäijänneLeader National International LAG Ykkösakseli LAG Pyhäjärvi- seutu LAG Skåne ESS TOTAL budget
Voluntary work 11 372
Own funding
Funding %
WP 2 Management of fish communities Knowledge of fish population: T-Bar - marking of fish
→ T-Bar marking (roach, bream and pikeperch) reveal the migrations of the fish between lake
data and give valuable information for the development of management fishing methods, fishing restrictions and stocking policy
Creating a web based service for collecting fishing data
→ Vesijärvisäätiö participates the work of LUVY in the development of web based service.
Local actions https://lomakkeet.luke.fi/kalamerkki
Development and construction of management fishing gears
→ Construction (voluntary work of fishermen) of new fishing gears to overcome the fishing problems during blooms net fouling algae (less dense messes)
2017: 23.1.– 3.2. Anniversary: already 25th time!
Local actions
2018: 22.1. – 2.2. Development and construction of management fishing gears
→ Also other types of fishing gears, such as seine nets, fish traps, smaller fyke nets Statistics 2018:
New gears:
Repaired gears: 1 seine net 1 large fyke net 7 small fyke nets
Local actions
WP 1 External loading The functioning and improvement of existing water protection structures Promotion and communication about natural based field drainage
Local actions
WP 3 Water quality and phytoplankton blooms Targeting the management efforts in different parts
Monitoring of net fouling algae together with local fishermen
→ Monitoring the occurrence, timing and extent of net fouling algae together with local fishermen.
Involvement of local residents in water protection and monitoring
Local actions
WP 4 Reed management Development of reed management plans Development of winter mowing The use of reed as raw material
Local actions
WP 2 Management of fish communities Involving local residents in fisheries management and monitoring
→ Workshops on building fishing tackles and testing them. Gathering essential information
Creating a web based service for collecting fishing data
Developing easy methods for gathering fishing data and methods for data visualization.
Local actions
Improving the utilization of local fish
Events and funding measures that promote utilization of local fish, for example workshops on fish handling and preparation
Fig: www.luvy.fi
WP 2 Management of fish communities Enhancing the predatory fish population in Lake Enäjärvi
Together with local fishing area, improvement of breeding grounds of predatory fish. Aim is to enhance the predatory fish population and improve the top down regulation in the target lake. Local actions
Protecting eel migration in River Karjaanjoki
Studies together with local fishing areas on the current status of eel population and eel migration. At the moment eel is stocked in inland waters but hydro power plants decrease its survival
downstream.
WP 2 Management of fish communities Evaluating the effects of the predatory fish population on water quality
This evaluation is a tool for local fishing association to manage the fish stocks (introduction of different fish species, rules for fishing).
Increasing of the use of local fish for food
Negotiations with local fishers and food industry about fishing and processing fish
Local actions
Figs: www.pyhajarvi-instituutti.fi
WP 1 External loading Inventory of condition and efficiency of existing water protection measures and improving the structures with local non-governmental organizations Simple tools and guidance of monitoring and maintenance for the land
Listing potential funding for investments Finding out if cottage owners are interested to do joint purchase of dry toilets or gray water filters.
Local actions
WP 3 Water quality and phytoplankton blooms Collecting and combining the information and results of water analysis and presenting results in popular form Collecting the data of phytoplankton blooms WP 4 Reed management Collecting the information of cutting and use of reed. Piloting the new cutting methods.
Local actions
WP 1 External loading External load related to the brownification of Lake Immeln. WP 3 Water quality and phytoplankton blooms Describing the deterioration of the water quality of Lake Immeln Investigating the occurrence of toxic cyanobacteria in Lake Immeln in combination with physical and chemical factors.
Local actions
Figs: www.osby.se, www.camping.se
WEB PAGES: www.puhdasvesijarvi.fi/en/HolaLake