Did you know that we are standing at the Oberer Mutzbach? This nature reserve stretches through Cologne. It connects Dellbrück and Dünnwald.
Oberer Mutzbach is more than just a stream. It is a haven for plants and animals. This area is a western continuation of the Mutzbach nature reserve. It lies within the Dünnwalder Forest. Katterbachstrasse separates these two reserves. It marks the border with Bergisch Gladbach.
Designated as a nature reserve in 1989, Oberer Mutzbach aims to protect vulnerable bird species. It also preserves the natural floodplain forests. The area holds scientific and geological importance. The geological features here are rare in North Rhine-Westphalia.
The Mutzbach originates in Odenthal-Voiswinkel. It flows for about 14 kilometers. The stream passes through Bergisch Gladbach and the Dünnwalder Forest. Eventually, it joins the Dhünn in Leverkusen-Manfort. Katterbach and Weidenbach are among its tributaries.
Centuries ago the Mutzbach powered mills. People altered its course. This increased the stream’s gradient for better mill performance. Historical records suggest these changes occurred before 1800.
Oberer Mutzbach spans approximately six hectares. It features a unique geological attribute. The Paffrather Kalkmulde enriches the Mutzbach. The water becomes weakly alkaline. This influences the surrounding vegetation. Certain plants thrive because of the lime content.
The Mutzbach itself defines this nature reserve. The sandy streambed is roughly 2.5 to 4 meters wide. Steep banks rise 50 to 60 centimeters high. The stream meanders naturally. The adjacent floodplain forests are structurally rich. These forests regularly flood. They serve as a crucial habitat for specialized species.
Preserving this natural waterway is a key goal. Oberer Mutzbach also connects the Dünnwalder Forest and Thielenbruch. This connection is vital for regional biodiversity.
The Mutzbach shows promising characteristics regarding its bank and bed structure. You can observe slight erosion and deposition slopes in some sandy areas. Deadwood accumulates sporadically within the stream.
The surrounding woodlands include black alder and field elm trees. These trees are typical for the area. In spring, yellow anemones bloom. They join with other plants. These include wood anemones, lesser celandine, and moschatel. Together, they create a colorful display.
Many bird species inhabit this area. Several endangered woodpeckers live here. These include black, middle spotted, lesser spotted, and green woodpeckers. Various amphibians reside within the Oberer Mutzbach area. These include the common toad, grass frog, and fire salamander.
The banded demoiselle dragonfly thrives here. The Mutzbach provides an ideal habitat. The males are easily spotted from late May to September. They have shimmering blue-green bodies. Their greenish wings feature broad, black-blue bands. With a wingspan of six to seven centimeters, they are among Europe’s largest damselflies.
The Oberer Mutzbach has great potential for natural development. The stream is unobstructed within the nature reserve. This allows natural processes to unfold.
The conservation efforts aim to develop a natural stream. This includes preserving the floodplain forests. A management plan guides these efforts. It emphasizes minimal intervention. Increasing deadwood benefits insects, small mammals, and birds.
Recreation significantly impacts the area. Weekends see many visitors. This can disturb the area. Paths and trails run close to the stream.
The Oberer Mutzbach is precious due to its geology and forests. Protecting its diverse species is crucial. By respecting the regulations, everyone contributes to its preservation.
Specific rules apply here. Visitors must stay on marked paths. Noise and music are prohibited. Dogs must remain on leashes.