Marl pit near Hanover

	Marl pit near Hanover
	Disused marl pit HPC I in Hanover-Misburg
location	in Hanover in Lower Saxony
surface	21 ha
Identifier	NSG-HA 205
WDPA ID	555518964
Natura 2000 ID	3625-332
FFH area	18.05 hectares
Geographical location	52 ° 23 ' N , 9 ° 52' E Coordinates: 52 ° 22 '53 " N , 9 ° 52' 10" E
Setup date	07/08/2016
administration	NLWKN
particularities	since 2016 nature reserve

Mergelgrube near Hanover is the name of an FFH area in the city of Hanover in Lower Saxony . With effect from July 8, 2016, the marl pit was designated as a nature reserve "Marl pit near Hanover (HPC I)".

geography

Despite its name, the FFH area Mergelgrube near Hanover is located in the city of Hanover. It is located south of the branch canal Misburg in 1974 eingemeindeten district Misburg as the abandoned about 50 years ago Mergelgrube HPC I of Hanover Portland Cement factory .

description

The marl pit, which is over 100 years old and 30 to 40 m deep, has been idle for almost 50 years. Poplar trees that had been reforested in the meantime were removed and the area opened up to visitors through paths, stairs and a viewing platform. A pump prevents the pit from filling up, so that the flora and fauna typical of the former Seckbruch landscape north-east of Hanover can be seen on the bottom of the pit . Due to the increased salt content of the marl, there are also coastal species. Counts showed the occurrence of 45 plant species endangered according to the Red List , including two that have disappeared in Lower Saxony since 1897. The Federal Agency for Nature Conservation mentions the occurrence of lime-rich swamps and still waters in a complex with various pioneer vegetation . In 2014, clearing at the edge of the marl pit led to fears of the Hanoverian nature conservation officer that the pit should be filled with rubble or excavated earth as requested by a company.

Mergelgrube HPC I in Hanover-Misburg in November 2008

Protective measures

Aerial view of the marl pit HPC I with the branch channel, 2016

The intended protective measures are to keep ditches and shallow waters open as well as to keep grassland and raw soil free . This also includes the prevention of strong reed beds and woody growth and the small-scale removal of topsoil to counteract nutrient accumulation. Continued pumping out of water is necessary for the marl pit to be further protected.

Others

The HPC II marl pit north of the Misburg branch canal, which was later used by the same company and accessible to visitors via a bridge , is protected as a geotope , is partially filled with excavated earth and is then to be used as a swimming lake .

Web links

Commons : Mergelgrube near Hanover - collection of images, videos and audio files

Nature reserve "Mergelgrube bei Hannover" in the database of the Lower Saxony State Office for Water Management, Coastal and Nature Conservation (NLWKN)
World Database on Protected Areas - Mergelgrube near Hanover (English)

supporting documents

↑ Landscape framework plan of the Hanover region. Status 2013 (PDF; 16.4 MB) Region Hannover. Environment department. Nature Conservation Team 36.04, 36.05 AG Landscape Framework Plan , pp. 511-514 , accessed on May 13, 2015 .
↑ Ordinance on the nature reserve "Mergelgrube bei Hannover (HPC I)" in the state capital Hanover, Region Hanover (nature reserve ordinance "Mergelgrube bei Hannover (HPC I)" - NSG-HA 205). (PDF; 49 kB) Region Hannover. Department of Environment, accessed on August 11, 2016 .
^ ^A ^b Dieter Nussbaum: The marl pit in Hanover-Misburg. (PDF; 481 kB) State capital Hanover Department of Environment and Urban Greenery, 2013, accessed on February 28, 2016 .
↑ 3625-332 marl pit near Hanover. (FFH area) Profiles of the Natura 2000 areas. Published by the Federal Agency for Nature Conservation . Retrieved February 28, 2016.
↑ Concern about Misburger marl pit. neuepresse.de, March 6, 2014, accessed on February 28, 2016 .
^ NSG - Geest-Ost planning area in the landscape framework plan of the Hanover region. Status 2013 (PDF; 16.4 MB) Region Hannover. Environment department. Nature Conservation Team 36.04, 36.05 AG landscape framework plan, p. 549 , accessed on May 13, 2015 .

[LRP-1] Landscape framework plan of the Hanover region. Status 2013 (PDF; 16.4 MB) Region Hannover. Environment department. Nature Conservation Team 36.04, 36.05 AG Landscape Framework Plan , pp. 511-514 , accessed on May 13, 2015 .

[VONSG-2] Ordinance on the nature reserve "Mergelgrube bei Hannover (HPC I)" in the state capital Hanover, Region Hanover (nature reserve ordinance "Mergelgrube bei Hannover (HPC I)" - NSG-HA 205). (PDF; 49 kB) Region Hannover. Department of Environment, accessed on August 11, 2016 .

[MHM-3] A ^b Dieter Nussbaum: The marl pit in Hanover-Misburg. (PDF; 481 kB) State capital Hanover Department of Environment and Urban Greenery, 2013, accessed on February 28, 2016 .

[BfN-4] 3625-332 marl pit near Hanover. (FFH area) Profiles of the Natura 2000 areas. Published by the Federal Agency for Nature Conservation . Retrieved February 28, 2016.

[NP-5] Concern about Misburger marl pit. neuepresse.de, March 6, 2014, accessed on February 28, 2016 .

[PGO-6] NSG - Geest-Ost planning area in the landscape framework plan of the Hanover region. Status 2013 (PDF; 16.4 MB) Region Hannover. Environment department. Nature Conservation Team 36.04, 36.05 AG landscape framework plan, p. 549 , accessed on May 13, 2015 .