Shallow lake with great diversity: Dümmer is "German Living Lake of the Year 2022"
 

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Shallow lake with great diversity: Dümmer is "German Living Lake of the Year 2022"

A well-deserved title on World Water Day: Lower Saxony's second largest inland lake may not be deeper than 1.40 meters anywhere, but it knows how to impress with its unique natural diversity. And the efforts of the people on its shores to preserve the blue jewel are also diverse – as there are enough challenges. The GNF and the Living Lakes Germany Network award the successful example of committed nature conservation for an intact body of water as "German Living Lake of the Year 2022".

An idyll and habitat for rare species of plants and
animal species between Osnabrück and Bremen:
the Dümmer. Photo: © Oliver Lange
Radolfzell, 22.03.2022: For the second time after 2017, when the Steinhuder Meer was chosen, the award "German Living Lake of the Year" goes this year to Lower Saxony: The Dümmer is title holder 2022, as GNF and Network Living Lakes Germany announced on the occasion of World Water Day.

A natural network for black-tailed godwit, curlew, osprey and bluethroat
 
After the Steinhuder Meer, the Dümmer is the second largest lake in the state of Lower Saxony, with a water surface of about 1,300 hectares. The valuable ecosystem, which also includes adjacent wet grassland areas, extends over some 4,760 hectares. The lake, which was formed around 11,000 years ago during the last ice age, is on average only 1.10 meters deep and at no point deeper than 1.40 meters - and perhaps for this very reason is nevertheless a hotspot of biodiversity, especially for rare birds. It is one of Lower Saxony's five wetlands of international importance protected under the RAMSAR Convention and is part of the European NATURA 2000 system of protected areas.
 
"The Dümmer exemplifies that nature forms fascinating networks," explains Bettina Schmidt, project manager at Global Nature Fund. "That's why our Living Lake of the Year award is for the lake, but also for its unique interconnectedness with other ecosystems, such as the extensive wetlands and wet meadows in its surroundings. This small-scale connectivity is the reason why a particularly large number of bird species - some of them extremely endangered - live in the area on and around the Dümmer, including garganey, spoonbill and bluethroat." The wet grassland in turn attracts meadow birds such as snipe, black-tailed godwit, lapwing, redshank and the great curlew - even the very rare spotted crake is sometimes noted. The pond rose fields on the lake provide a breeding ground for the largest colony of black terns in Lower Saxony. And ospreys and white-tailed eagles circle above the water and profit from the rich food supply in the lake.
 
Committed nature conservation: so that the lake will still be "living" tomorrow
 
"We are proud to be able to take care of this species-rich wetland of Dümmer, which is so important for nature conservation," says Frank Apffelstaedt from the Ecological Station Naturschutzring Dümmer e.V. "However, we are also taking on a great responsibility for maintaining the current state of the ecosystem and, if possible, even improving it further. This not only involves a lot of work for many full-time staff and volunteers. The key to success is the local network of nature conservation authorities from the state, the districts of Diepholz, Vechta and Osnabrück, the Naturschutzring Dümmer and other nature conservation associations, as well as the involvement of tourism, water sports and also agriculture. There are great challenges that we have to master together: In summer, many thousands of day tourists exert a massive pressure of use on the Dümmer. From the catchment area of the Hunte as the main tributary of the Dümmer comes a too high nutrient input into the lake. Since the water level is kept high in summer, contrary to the natural course, the reeds in the shore area lack the opportunity to regenerate. And these are just some of the problems for which we have to keep finding solutions in exchange with local authorities, communities and local people."
 
The basis of measures taken include extensive population surveys of waterfowl, wading birds and reedbed birds. Reed reeds are among the endangered habitats in many lake regions in Germany. For this reason, reedbeds on the lakeshore are specifically preserved and promoted. Based on the experience of several pilot projects, the Naturschutzring Dümmer e.V. relies here on a targeted combination of palisade and fence construction to reduce erosion caused by wave action on the one hand and to create calmed areas in front of the existing reeds on the other, where the reed plants can gradually spread again. The eroded lake bottom can be restored by sand injection. Volunteers maintain the network of small water bodies around the lake: this allows waterfowl and wading birds, amphibians, fish and rare plants to thrive. The Ecological Station Naturschutzring Dümmer e.V. also works to renaturalize raised bogs in the wider surroundings of the lake. Another focus of its activities is public relations and contact with visitors to the Dümmer area. Themed tours are offered on the lake, through the wetlands and into the raised bogs in the surrounding area. According to the environmentalists, it is crucial to enable sustainable nature experiences: those that are fun and make use of the high recreational value of the Dümmer habitat, but also impart the necessary knowledge that is needed to preserve the current "German Living Lake of the Year".

Passing on the important experiences from Dümmer to other lake regions in Germany is made possible by the Wilo Foundation's support of the Living Lakes Germany network. The foundation supports projects around the world relating to water as a resource, including initiatives of the Global Nature Fund. With the help of the Wilo Foundation, the network was also able to recruit the rowers of the German eight, multiple world and European champions, as ambassadors for Living Lakes Germany.

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Background
 
Every year on UN World Water Day, March 22, the GNF and the Network Living Lakes Germany nominate the "Living Lake of the Year". The award draws attention to lakes and wetlands as valuable ecosystems and unique natural treasures and highlights achievements for their protection. The initiative is based on the international "Threatened Lake of the Year" campaign. Combined with activities around the year, the campaign contributes to solving problems at lakes and in wetlands.
 
Network Living Lakes Germany

The Dümmer is one of the partner lakes in the Network Living Lakes Germany, represented by the Naturschutzring Dümmer e.V., which has been committed to the preservation and development of nature at the Dümmer and the neighboring regions (districts of Diepholz, Vechta, Osnabrück) since 1993. The Living Lakes Network Germany was founded in 2009 by the Global Nature Fund and is linked to the globally operating Living Lakes Network, a platform for cooperation for the permanent and sustainable development of lakes with over 130 organizations. The Network Living Lakes Germany was awarded as an official project of the UN Decade on Biological Diversity in 2016.
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